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Zaremski, A. ; Gastonguay, L. ; Zaremski, C. ; Beauchene, J. |
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Title |
Molecular characterization and biodiversity of wood-decaying fungi in French Guiana |
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Conference Article |
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Year |
2011 |
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IRG/WP |
Abbreviated Journal |
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14 |
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10825 |
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fungus biodiversity, tropical forest, ribosomal DNA, sequences, molecular taxonomy, BLASTn, primer ITS1, primer ITS4 |
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Abstract |
Fungi from tropical regions are currently under-represented in the classification system. Indeed, difficult access to tropical forests and irregular occurrence carpophores make it complicated to study fungus species in such environments, unlike in European zones where fungal diversity and taxonomy are better known. The purpose of this work was to enhance classification by integrating new data that would bring out the importance of certain traits of these fungi, and provide a clearer understanding of how the biodiversity of fungi from the forest ecosystems of French Guiana is organized, particularly those causing wood decay through white rot, brown rot or soft rot. In our study, we chose to work in the zone comprising the internal transcribed spacers ITS1 and ITS2, which are relatively variable, and the 5.8 S small ribosomal subunit, which is not highly variable. The primers ITS 1(5’-TCCGTAGGTGAACCTGCGC-3’) and ITS 4 (5’-TCCTCCGCTTATTGATATGC-3’), specific to fungi, were chosen for this taxonomic analysis of the studied species. This study was carried out on 101 fungus fruiting bodies at the Paracou forest site in French Guiana. Of those 101 fungi, 72 were identified by BLASTn. Four species were Ascomycetes of the genus Muscodor and Xylaria. The other 68 species, all in the class of the Basidiomycetes, were divided into the following orders: 31 Agaricales, 1 Atheliales, 2 Boletales, 1 Gomphales, 12 Polyporales, 1 Trechisporales and 1 Tremellales. There was also an indeterminate taxon very similar to the lichens. Within the order Polyporales, the main genera were found, such as Antrodiella, Coriolopsis, Fomitopsis, Ganoderma, Lentinus, Pycnoporus, Steccherinum, Trametes, Fomitoporia. All these fungi have the particularity of causing wood decay. |
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St George - Utah - USA |
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14-15 May 2011 |
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EcoFoG @ carole.legrand @ |
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243 |
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Amusant, N. ; Migg, M. ; Thibaut, B. ; Beauchêne, J. |
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Title |
Unexpected natural decay resistance strategies of durable tropical woods bocoa prouacencis, Vouacapoua americana, Inga alba and relationship with specific gravity and wood extractives |
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2014 |
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IRG/WP |
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14 |
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10832 |
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EcoFoG @ carole.legrand @ |
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245 |
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Guitet, Stéphane; Brunaux, Olivier; Gandville, Jean-Jacques de; Gonzalez, Sophie; Richard-Hansen, Cécile |
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Title |
Catalogue des habitats forestiers de Guyane |
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2015 |
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ONF |
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Cayenne - Guyane française |
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978-2-84207-384-8 |
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EcoFoG @ webmaster @ |
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249 |
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Garcin, N.; Humbert, L.; Martin, N.; Amusant, N. |
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Title |
Anib@rosa, un projet éco responsable pour le bois de rose en Guyane |
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2014 |
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Les cahiers de l'école QUAres |
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3 |
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EcoFoG @ webmaster @ |
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257 |
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Say Anouhe, J.B. ; Adima, A.A. ; Niamké, B.F. ; Stien, Didier ; Kassi Amian, B. ; Virieux, D. ; Pirate, J.L. ; Kati-Coulibaly, S. ; Amusant, Nadine |
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Title |
Wood Natural durability study source of biomolecules: case of Dicorynia guianensis Amsh. Heartwood |
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Conference Article |
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2016 |
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IRG/WP |
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10871 |
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EcoFoG @ webmaster @ |
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288 |
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Author |
Lopez, Manon |
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Title |
Les plantations forestières en Guyane : sont elles une solution durable à l'approvisionnement bois dans les prochaines années ? |
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Report |
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2016 |
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Abbreviated Journal |
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plantations forestières ; Guyane française ; filière bois ; carbone |
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ONF |
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Cayenne - Guyane française |
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EcoFoG @ carole.legrand @ |
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293 |
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Fu, T. ; Touboul, D. ; Della-Negra, S. ; Houël, E. ; Amusant, N. ; Duplais, C. ; Brunelle, A. |
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Title |
Localization od bioactive metabolites in durable ? Tropical tree Sextonia rubra (Lauracaea) with argon and bismuth cluster dual beam depth profiliing and imaging |
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Conference Article |
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2016 |
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Imaging mass spectrometry conference – Ustron – Pologne – Octobre 2016 |
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Many tropical tree species generate natural decay resistance by producing bioactive metabolites. Among them, Sextonia rubra (Lauraceae) is a widely exploited species for construction in French Guiana. Rubrynolide and rubrenolide, which are secondary metabolites isolated from the stem wood of S. rubra, exhibit potent antifungal and termiticidal activities that result in the exceptional durability of the heartwood. Although the structure and total synthesis of these two biologically active compounds have been well described in literature, little is known about their cellular localization or biosynthesis process in living trees. Time-of-flight secondary ion mass spectrometry (TOF-SIMS) has been well known for its high lateral resolution imaging with a typical beam size of 0.4-2 µm, thus sufficient to image the wood surface at subcellular level.
Wood surfaces of sapwood, transition zone and heartwood from living trees of S. rubra were prepared with ultramicrotome using diamond knife. Each surface was mapped by Bi3+ cluster TOF-SIMS with high lateral resolution (~ 0.4 µm) which was achieved by employing burst alignment primary ion focusing mode with an extraction delay of the secondary ions to improve mass resolution. 3D imaging of a multi-structure wood sample was performed using dual beam depth profiling method, with 25 keV Bi3+ and 10 keV Ar1000+ as analysis and sputter beam, respectively. To examine the effect of life-history traits on the production of bioactive metabolites, the corresponding counterparts from a tree which had suffered stress during growth were investigated as well. |
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EcoFoG @ carole.legrand @ |
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302 |
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Author |
Nicolle, Sandra |
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Title |
Sharing and distributing environmental data: study cases in a French and Brazilian Amazonian context |
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2012 |
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Sharing environmental information;
issues of open environmental data in Latin America |
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1-5 |
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Porto Alegre, Brésil |
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23-24 août 2012 |
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EcoFoG @ webmaster @ |
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191 |
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Author |
Fournier, M.; Stockes, A.; Coutand, C.; Fourcaud, T.; Moulia, B. |
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Title |
Tree biomechanics and growth strategies in the context of forest functional ecology (Chap.1) |
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2006 |
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Ecology and biomechanics : a mechanical approach to the ecology of animals and plants |
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1-33 |
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Introduction , 2 Sorne Biornechanical Characteristics of Trees , 3 1-.2.1 Wood as a Lightweight, Cellular- and Fiher- Reinforced Materia!..... 3 1.2.2 Wood Variability 5 1.2.3 Mechanics of Secondary Growth , , , 6 Biomechanical and Ecological Significance of Height. , , 6 1.3.1 Biomechanical Environmental Constraints on Tree Height and Their Ecological Significance, “. . 7 l.3.1.1 Safety Factor . 7 1.3.1.2 Analysis of Successive Shapes Occurring during Growth Due to the Continuous Increase of Supported Loads ....” ..“ 8 1.3.2 Biomechanical Functional Traits Defined from Risk Assessment.. 9 1.3.2.1 Buckling or Breakage·of Stems 9 1.3.2.2 Root Anchorage 9 1.3.3 Biomechanical Functional Traits and Processes lnvolved in Height Gro\vth Strategy .” “ .., , 13 The Growth Processes That Control the Mechanical Stability of Siender Tree StelTIS,., , ,......... . , , ,.. , ,.. ' , 14 1.4, l The Mechanical Control of Growth , , , ,.. , , , 14 1.4.2 The Control of Stem Orientation ta Maintain or Restore the Tree Form, and Allow Vertical Growth ” “ ” “ ..”'“.”,,, ..,.16 1.4,3 The Control of Root Growth to Secure Anchorage .... 21 A Practical Application of Tree Biomechanics in Ecology 21 Conclusion , 24 Références 25 |
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Taylor & Francis |
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Boca Raton (USA) |
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Herrel, A.; Speck, T.; Rowe, N.P. |
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EcoFoG @ webmaster @ 25 |
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66 |
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Author |
Davy, Damien ; Tritsch, Isabelle ; Grenand, Pierre |
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Title |
Construction et restructuration territoriale chez les Wayãpi et Teko de la commune de Camopi, Guyane française |
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2012 |
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Confins |
Abbreviated Journal |
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16 |
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1-25 |
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EcoFoG @ carole.legrand @ |
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167 |
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