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Bandou, E.; Lebailly, F.; Muller, F.; Dulormne, M.; Toribio, A.; Chabrol, J.; Courtecuisse, R.; Plenchette, C.; Prin, Y.; Duponnois, R.; Thiao, M.; Sylla, S.; Dreyfus, B.; Ba, A.M. |
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Title |
The ectomycorrhizal fungus Scleroderma bermudense alleviates salt stress in seagrape (Coccoloba uvifera L.) seedlings |
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Journal Article |
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2006 |
Publication  |
Mycorrhiza |
Abbreviated Journal |
Mycorrhiza |
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16 |
Issue |
8 |
Pages |
559-565 |
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Coccoloba uvifera; ectomycorrhizal dependency; mineral uptake; salt stress; water status |
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The purpose of this study was to test the capacity of the ectomycorrhizal (ECM) fungus, Scleroderma bermudense, to alleviate saline stress in seagrape (Coccoloba uvifera L.) seedlings. Plants were grown over a range (0, 200, 350 and 500 mM) of NaCl levels for 12 weeks, after 4 weeks of non-saline pre-treatment under greenhouse conditions. Growth and mineral nutrition of the seagrape seedlings were stimulated by S. bermudense regardless of salt stress. Although ECM colonization was reduced with increasing NaCl levels, ECM dependency of seagrape seedlings increased. Tissues of ECM plants had significantly increased concentrations of P and K but lower Na and Cl concentrations than those of non-ECM plants. Higher K concentrations in the leaves of ECM plants suggested a higher osmoregulating capacity of these plants. Moreover, the water status of ECM plants was improved despite their higher evaporative leaf surface. The results suggest that the reduction in Na and Cl uptake together with a concomitant increase in P and K absorption and a higher water status in ECM plants may be important salt-alleviating mechanisms for seagrape seedlings growing in saline soils. |
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Univ Antilles Guyane, Fac Sci Exactes & Nat, Lab Biol & Physiol Vegetales, F-97159 Guadeloupe, France, Email: amadou.ba@univ-ag.fr |
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0940-6360 |
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ISI:000241687200006 |
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EcoFoG @ eric.marcon @ |
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221 |
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Öpik, M.; Zobel, M.; Cantero, J.J.; Davison, J.; Facelli, J.M.; Hiiesalu, I.; Jairus, T.; Kalwij, J.M.; Koorem, K.; Leal, M.E.; Liira, J.; Metsis, M.; Neshataeva, V.; Paal, J.; Phosri, C.; Põlme, S.; Reier, Ü.; Saks, Ü.; Schimann, H.; Thiéry, O.; Vasar, M.; Moora, M. |
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Title |
Global sampling of plant roots expands the described molecular diversity of arbuscular mycorrhizal fungi |
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Journal Article |
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2013 |
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Mycorrhiza |
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23 |
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5 |
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411-430 |
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454-sequencing; Biogeography; Database; Diversity; Fungal macroecology; Glomeromycota |
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We aimed to enhance understanding of the molecular diversity of arbuscular mycorrhizal fungi (AMF) by building a new global dataset targeting previously unstudied geographical areas. In total, we sampled 96 plant species from 25 sites that encompassed all continents except Antarctica. AMF in plant roots were detected by sequencing the nuclear SSU rRNA gene fragment using either cloning followed by Sanger sequencing or 454-sequencing. A total of 204 AMF phylogroups (virtual taxa, VT) were recorded, increasing the described number of Glomeromycota VT from 308 to 341 globally. Novel VT were detected from 21 sites; three novel but nevertheless widespread VT (Glomus spp. MO-G52, MO-G53, MO-G57) were recorded from six continents. The largest increases in regional VT number were recorded in previously little-studied Oceania and in the boreal and polar climatic zones – this study providing the first molecular data from the latter. Ordination revealed differences in AM fungal communities between different continents and climatic zones, suggesting that both biogeographic history and environmental conditions underlie the global variation of those communities. Our results show that a considerable proportion of Glomeromycota diversity has been recorded in many regions, though further large increases in richness can be expected in remaining unstudied areas. © 2013 Springer-Verlag Berlin Heidelberg. |
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INRA-Joint Research Unit Ecology of Guiana Forests (Ecofog), campus agronomique, BP 709, 97387 Kourou cedex, French Guiana |
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Export Date: 25 June 2013; Source: Scopus |
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EcoFoG @ webmaster @ |
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493 |
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Kenne, M.; Feneron, R.; Djieto-Lordon, C.; Malherbe, M.C.; Tindo, M.; Ngnegueu, P.R.; Dejean, A. |
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Nesting and foraging habits in the arboreal ant Atopomyrmex mocquerysi ANDRE, 1889 (Hymenoptera: Formicidae: Myrmicinae) |
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Journal Article |
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2009 |
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Myrmecological News |
Abbreviated Journal |
Myrmecol. News |
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12 |
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109-115 |
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Cameroon; wood-excavating ant; nest site selection; pest ant; predatory behavior; rhythm of activity; life history |
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Atopomyrmex mocquerysi ANDRE, 1889 is a West-Central African wood-excavating myrmicine species whose colonies construct galleries in the main live branches of their host trees, causing the distal parts of these branches to dry out. In southeastern Cameroon, this species was mainly found in woody savannahs that are burned annually. It was also present in the canopy of a secondary forest, but was relatively rare on trees growing along forest edges and entirely absent from the canopy of an old-growth forest. It was absent from oil palm and coffee tree plantations, rare on cocoa trees. present on 0.2% to 5.3% of the avocado, guava, mango and Citrus spp. trees monitored, and frequent on safoo trees (12.4%). A fire in a mango plantation seems to have favored its presence. The colonies generally exploit Aleyrodidae, Aphididae, Coccidae, and Stictococcidae. Workers forage for prey diurnally, mostly on the ground. Their predatory behavior is characterized by detection through contact. Workers recruit nestmates at short-range (within range of an alarm pheromone), rarely at long-range, after which they spread-eagle the prey and immediately cut it up on the spot. Individual workers retrieve the prey pieces. Unlike other territorially-dominant arboreal ants, A. mocquerysi is a threat to host trees because. in addition to being a wood-excavating species, its workers only slightly protect the foliage of their host tree from herbivorous insects since they mostly hunt on the ground. |
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[Kenne, Martin; Tindo, Maurice] Univ Douala, Fac Sci, Dept Biol Organismes Anim, Douala, Cameroon, Email: medoum68@yahoo.fr |
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OESTERREICHISCHE GESELL ENTOMOFAUNISTIK, C/O NATURHISTOR MUSEUM WIEN |
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1994-4136 |
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ISI:000271357700012 |
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EcoFoG @ eric.marcon @ |
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97 |
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Orivel, J.; Leroy, C. |
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The diversity and ecology of ant gardens (Hymenoptera: Formicidae; Spermatophyta: Angiospermae) |
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Journal Article |
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2011 |
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Myrmecological News |
Abbreviated Journal |
Myrmecol. News |
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14 |
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73-85 |
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Ant-plant interactions; epiphytes; mutualisms; Neotropics; Paleotropics; phytotelm; parabiosis; seed dispersal; review |
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Mutualistic interactions between ants and plants are important features of many ecosystems, and they can be divided into three main categories: dispersal and protective mutualisms and myrmecotrophy. In both the Neotropics and the Southeastern Asian Paleotropics, ant gardens (AGs), a particular type of ant-plant interaction, are frequent. To initiate AGs, ants integrate the seeds of certain epiphyte species into the carton of their nest. The development of the plants leads to the formation of a cluster of epiphytes rooted in the carton. They have been defined as one of the most complex associations between ants and plants known because of the plurispecific, but also specialized nature of the association involving several phylogenetically-distant ant and plant species. The aim of this review is to provide a synthesis of the diversity and ecology of AGs, including the outcomes experienced by the partners in the interaction and the direct and indirect impacts ant-garden ants have on the plant and arthropod communities. |
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[Orivel, Jerome; Leroy, Celine] CNRS, UMR Ecol Forets Guyane, Kourou 97379, French Guiana, Email: jerome.orivel@ecofog.gf |
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OESTERREICHISCHE GESELL ENTOMOFAUNISTIK, C/O NATURHISTOR MUSEUM WIEN |
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1994-4136 |
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ISI:000286844100009 |
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EcoFoG @ webmaster @ |
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292 |
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Groc, S.; Delabie, J.H.C.; Fernández, F.; Leponce, M.; Orivel, J.; Silvestre, R.; Vasconcelos, H.L.; Dejean, A. |
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Leaf-litter ant communities in a pristine Guianese rainforest: stable functional structure versus high species turnover |
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Journal Article |
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2013 |
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Myrmecological News |
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Myrmecol. News |
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19 |
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43-51 |
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EcoFoG @ webmaster @ |
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523 |
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Groc, S.; Delabie, J.H.C.; Fernández, F.; Leponce, M.; Orivel, J.; Silvestre, R.; Vasconcelos, H.L.; Dejean, A. |
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Leaf-litter ant communities (Hymenoptera: Formicidae) in a pristine Guianese rain-forest: Stable functional structure versus high species turnover |
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Journal Article |
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2014 |
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Myrmecological News |
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Myrmecological News |
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19 |
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43-51 |
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Diversity gradient; Functional groups; Habitat heterogeneity; Litter-dwelling ant communities; Local scale; Pristine Amazonian rainforest; Taxonomic and functional structure |
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We compared the ant assemblages from four very heterogeneous habitats over a short-distance elevational gradient of vegetation (due to the presence of an inselberg) at the Nouragues Research Station, French Guiana. We focused on litter-dwelling ants, combining the use of pitfall traps and the Winkler method according to the Ants of the Leaf Litter Proto-col. This permitted us to note (1) a high leaf-litter ant diversity overall and a decreasing diversity gradient from the lowland rainforest to the top of the inselberg, and (2) differences in species density, composition and functional struc-ture. While the ant assemblages on the plateau and inselberg can be considered functionally similar and typical of an Amazonian rainforest, that of the transition forest, relatively homogenous, rather corresponded to an ant fauna typical of open areas. By contrast, the liana forest assemblage was unexpectedly richer and denser than the others, sheltering a litter-dwelling ant fauna dominated by numerous and abundant cryptic species. These taxonomical and functional dissi-milarities may reflect the influence of the environmental heterogeneity, which, through variable abiotic conditions, can contribute to maintaining a notably rich ant biodiversity in these Neotropical habitats. |
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Université de Toulouse, UPS (Ecolab), 118 route de Narbonne, 31062 Toulouse Cedex 9, France |
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19944136 (Issn) |
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Export Date: 10 March 2014; Source: Scopus; Language of Original Document: English; Correspondence Address: Groc, S.; Instituto de Biologia, Universidade Federal de Uberlândia (UFU), 38400-902 Uberlândia, Minas Gerais, Brazil; email: groc.sarah@gmail.com |
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EcoFoG @ webmaster @ |
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534 |
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Dejean, A.; Corbara, B.; Roux, O.; Orivel, J. |
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The antipredatory behaviours of neotropical ants towards army ant raids (Hymenoptera: Formicidae) |
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Journal Article |
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2014 |
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Myrmecological News |
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Myrmecological News |
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19 |
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17-24 |
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Antipredatory behaviour; Army ants; Ecitoninae; Prey-ant species |
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Group hunting, nomadism, wingless queens and colony fission characterize army ants, allowing them to have become the main tropical arthropod predators, mostly of other social insects. We studied the reactions of different ant species to the New World army ants Eciton burchellii (WESTWOOD, 1842) and E. hamatum (FABRICIUS, 1782) (Ecitoninae). We compiled our results with those already known in a synthetic appendix. A wide range of ant species react to the ap-proach of army ant raids by evacuating their nests with several workers transporting brood. The Eciton plunder a large part of the brood but rarely kill workers or queens, so that the latter return to their nest and resume colony activity. One exception is Paratrechina longicornis (LATREILLE, 1802) colonies that quickly evacuate their nest, so that the entire col-ony can generally escape a raid. Another is Leptogenys mexicana (MAYR, 1870) that leave their nests in columns while some nestmates resist the attack; they therefore lose only a few larvae. We noted that colonies can avoid being raided if the army ants ignore them (Atta cephalotes (LINNAEUS, 1758)), or if the workers produce a repellent substance (Azteca associated with myrmecophytic Cecropia) or are repellent themselves (Pachycondyla villosa (FABRICIUS, 1804), Ec-tatomma spp.). In the other cases, a part of the brood is lost. When an Eciton raid approached the base of their host-tree trunk, Azteca andreae GUERRERO, DELABIE and DEJEAN, 2010 workers dropped a part of their brood on the ground. While numerous Eciton workers were gathering up this brood, the front of the column advanced, so that the Azteca andreae nests were not plundered. Pheidole megacephala (FABRICIUS, 1793) nests were partly plundered as the workers reacted aggressively, blocking the Eciton inside their nests during a long time. When the latter returned toward their bivouac, they were attacked and killed by their nestmates whether or not they had retrieved Pheidole brood. Consequently, the front of the column turned away from the Pheidole nest. |
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Maladies Infectieuses et Vecteurs, Evolution et Contrôle (UMR- IRD 224) Équipe BEES, IRD 01, BP 171 Bobo-Dioulasso, Burkina Faso |
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19944136 (Issn) |
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Export Date: 10 March 2014; Source: Scopus; Language of Original Document: English; Correspondence Address: Dejean, A.; Écologie des Forêts de Guyane (UMR-CNRS 8172), Campus agronomique, BP 316, 97379 Kourou cedex, France; email: alain.dejean@wanadoo.fr |
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535 |
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Nirma, C.; Rodrigues, A.M.S.; Basset, C.; Chevolot, L.; Girod, R.; Moretti, C.; Stien, D.; Dusfour, I.; Eparvier, V. |
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Larvicidal activity of isoflavonoids from Muellera frutescens extracts against Aedes aegypti |
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Journal Article |
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2012 |
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Natural Product Communications |
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7 |
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10 |
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1319-1322 |
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Aedes aegypti; French Guiana; Insecticides; Isoflavonoids; Muellera frutescens |
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The biological activity of extracts from the leaves, bark and roots of Muellera frutescens, an Amazonian ichtyotoxic plant, were evaluated to find new environmentally safe insecticides. The n-hexane extracts of bark, leaf, and root showed a strong toxic activity against Aedes aegypti mosquito larvae. Bioguided fractionation of the bark extract led to the isolation of seven isoflavonoids (12a-hydroxyelliptone, elliptone, (-)-variabilin, rotenone, rotenolone, tephrosin and deguelin). Rotenone and deguelin are responsible for the larvicidal activity of the plant. M. frutescens leaves contain up to 0.6%, w/w, deguelin. These results justify the traditional ichtyotoxic use of M. frutescens. The leaves contain a relatively high proportion of deguelin and, therefore, can be considered as a renewable source of this environmentally friendly insecticidal isoflavonoid. |
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CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 1 avenue de la Terrasse, 91198 Gif-sur-Yvette, France |
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Export Date: 6 December 2012; Source: Scopus |
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EcoFoG @ webmaster @ |
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448 |
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Duval, R.; Duplais, C. |
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Fluorescent natural products as probes and tracers in biology |
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2017 |
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Natural Product Reports |
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Natural Product Reports |
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34 |
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2 |
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161-193 |
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Covering: 1985 up to the end of 2016 Fluorescence is a remarkable property of many natural products in addition to their medicinal and biological values. Herein, we provide a review on these peculiar secondary metabolites to stimulate prospecting of them as original fluorescent tracers, endowed with unique photophysical properties and with applications in most fields of biology. The compounds are spectrally categorized (i.e. fluorescing from violet to the near infra-red) and further structurally classified within each category. Natural products selected for their high impact in modern fluorescence-based biological studies are highlighted throughout the article. Finally, we discuss aspects of chemical ecology where fluorescent natural products might have key evolutionary roles and thus open new research directions in the field. © 2017 The Royal Society of Chemistry. |
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CNRS, UMR 8172 EcoFoG (Ecologie des Forêts de Guyane), AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 23 avenue Pasteur, Cayenne, France |
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Export Date: 23 February 2017 |
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EcoFoG @ webmaster @ |
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736 |
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Steidinger, B.S.; Crowther, T.W.; Liang, J.; Van Nuland, M.E.; Werner, G.D.A.; Reich, P.B.; Nabuurs, G.; de-Miguel, S.; Zhou, M.; Picard, N.; Herault, B.; Zhao, X.; Zhang, C.; Routh, D.; Peay, K.G.; Abegg, M.; Adou Yao, C.Y.; Alberti, G.; Almeyda Zambrano, A.; Alvarez-Davila, E.; Alvarez-Loayza, P.; Alves, L.F.; Ammer, C.; Antón-Fernández, C.; Araujo-Murakami, A.; Arroyo, L.; Avitabile, V.; Aymard, G.; Baker, T.; Bałazy, R.; Banki, O.; Barroso, J.; Bastian, M.; Bastin, J.-F.; Birigazzi, L.; Birnbaum, P.; Bitariho, R.; Boeckx, P.; Bongers, F.; Bouriaud, O.; Brancalion, P.H.S.; Brandl, S.; Brearley, F.Q.; Brienen, R.; Broadbent, E.; Bruelheide, H.; Bussotti, F.; Cazzolla Gatti, R.; Cesar, R.; Cesljar, G.; Chazdon, R.; Chen, H.Y.H.; Chisholm, C.; Cienciala, E.; Clark, C.J.; Clark, D.; Colletta, G.; Condit, R.; Coomes, D.; Cornejo Valverde, F.; Corral-Rivas, J.J.; Crim, P.; Cumming, J.; Dayanandan, S.; de Gasper, A.L.; Decuyper, M.; Derroire, G.; DeVries, B.; Djordjevic, I.; Iêda, A.; Dourdain, A.; Obiang, N.L.E.; Enquist, B.; Eyre, T.; Fandohan, A.B.; Fayle, T.M.; Feldpausch, T.R.; Finér, L.; Fischer, M.; Fletcher, C.; Fridman, J.; Frizzera, L.; Gamarra, J.G.P.; Gianelle, D.; Glick, H.B.; Harris, D.; Hector, A.; Hemp, A.; Hengeveld, G.; Herbohn, J.; Herold, M.; Hillers, A.; Honorio Coronado, E.N.; Huber, M.; Hui, C.; Cho, H.; Ibanez, T.; Jung, I.; Imai, N.; Jagodzinski, A.M.; Jaroszewicz, B.; Johannsen, V.; Joly, C.A.; Jucker, T.; Karminov, V.; Kartawinata, K.; Kearsley, E.; Kenfack, D.; Kennard, D.; Kepfer-Rojas, S.; Keppel, G.; Khan, M.L.; Killeen, T.; Kim, H.S.; Kitayama, K.; Köhl, M.; Korjus, H.; Kraxner, F.; Laarmann, D.; Lang, M.; Lewis, S.; Lu, H.; Lukina, N.; Maitner, B.; Malhi, Y.; Marcon, E.; Marimon, B.S.; Marimon-Junior, B.H.; Marshall, A.R.; Martin, E.; Martynenko, O.; Meave, J.A.; Melo-Cruz, O.; Mendoza, C.; Merow, C.; Monteagudo Mendoza, A.; Moreno, V.; Mukul, S.A.; Mundhenk, P.; Nava-Miranda, M.G.; Neill, D.; Neldner, V.; Nevenic, R.; Ngugi, M.; Niklaus, P.; Oleksyn, J.; Ontikov, P.; Ortiz-Malavasi, E.; Pan, Y.; Paquette, A.; Parada-Gutierrez, A.; Parfenova, E.; Park, M.; Parren, M.; Parthasarathy, N.; Peri, P.L.; Pfautsch, S.; Phillips, O.; Piedade, M.T.; Piotto, D.; Pitman, N.C.A.; Polo, I.; Poorter, L.; Poulsen, A.D.; Poulsen, J.R.; Pretzsch, H.; Ramirez Arevalo, F.; Restrepo-Correa, Z.; Rodeghiero, M.; Rolim, S.; Roopsind, A.; Rovero, F.; Rutishauser, E.; Saikia, P.; Saner, P.; Schall, P.; Schelhaas, M.-J.; Schepaschenko, D.; Scherer-Lorenzen, M.; Schmid, B.; Schöngart, J.; Searle, E.; Seben, V.; Serra-Diaz, J.M.; Salas-Eljatib, C.; Sheil, D.; Shvidenko, A.; Silva-Espejo, J.; Silveira, M.; Singh, J.; Sist, P.; Slik, F.; Sonké, B.; Souza, A.F.; Stereńczak, K.; Svenning, J.-C.; Svoboda, M.; Targhetta, N.; Tchebakova, N.; Steege, H.; Thomas, R.; Tikhonova, E.; Umunay, P.; Usoltsev, V.; Valladares, F.; van der Plas, F.; Van Do, T.; Vasquez Martinez, R.; Verbeeck, H.; Viana, H.; Vieira, S.; von Gadow, K.; Wang, H.-F.; Watson, J.; Westerlund, B.; Wiser, S.; Wittmann, F.; Wortel, V.; Zagt, R.; Zawila-Niedzwiecki, T.; Zhu, Z.-X.; Zo-Bi, I.C.; GFBI consortium |
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Title |
Climatic controls of decomposition drive the global biogeography of forest-tree symbioses |
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Journal Article |
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Year |
2019 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
569 |
Issue |
7756 |
Pages |
404-408 |
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Keywords |
Fungi |
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Abstract |
The identity of the dominant root-associated microbial symbionts in a forest determines the ability of trees to access limiting nutrients from atmospheric or soil pools 1,2 , sequester carbon 3,4 and withstand the effects of climate change 5,6 . Characterizing the global distribution of these symbioses and identifying the factors that control this distribution are thus integral to understanding the present and future functioning of forest ecosystems. Here we generate a spatially explicit global map of the symbiotic status of forests, using a database of over 1.1 million forest inventory plots that collectively contain over 28,000 tree species. Our analyses indicate that climate variables—in particular, climatically controlled variation in the rate of decomposition—are the primary drivers of the global distribution of major symbioses. We estimate that ectomycorrhizal trees, which represent only 2% of all plant species 7 , constitute approximately 60% of tree stems on Earth. Ectomycorrhizal symbiosis dominates forests in which seasonally cold and dry climates inhibit decomposition, and is the predominant form of symbiosis at high latitudes and elevation. By contrast, arbuscular mycorrhizal trees dominate in aseasonal, warm tropical forests, and occur with ectomycorrhizal trees in temperate biomes in which seasonally warm-and-wet climates enhance decomposition. Continental transitions between forests dominated by ectomycorrhizal or arbuscular mycorrhizal trees occur relatively abruptly along climate-driven decomposition gradients; these transitions are probably caused by positive feedback effects between plants and microorganisms. Symbiotic nitrogen fixers—which are insensitive to climatic controls on decomposition (compared with mycorrhizal fungi)—are most abundant in arid biomes with alkaline soils and high maximum temperatures. The climatically driven global symbiosis gradient that we document provides a spatially explicit quantitative understanding of microbial symbioses at the global scale, and demonstrates the critical role of microbial mutualisms in shaping the distribution of plant species. © 2019, The Author(s), under exclusive licence to Springer Nature Limited. |
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Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway |
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Nature Publishing Group |
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00280836 (Issn) |
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EcoFoG @ webmaster @ |
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872 |
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