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Jaouen, G.; Fournier, M.; Coutand, C. |
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Title |
Diversity of biomechanical strategies of young trees for height growth in a tropical rainforest. How to predict self-supporting degree with the minimum of data? |
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Conference Article |
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2006 |
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Proceedings of the fifth plant biomechanics conference |
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1 |
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335-340 |
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STFI-Packforsk AB |
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Stockholm (Sweden) |
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Salmén, L |
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EcoFoG @ webmaster @ |
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139 |
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Ruelle, J.; Yamamoto, H.; Thibaut, B.; Beauchêne, J. |
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Title |
Growth stresses and structural parameters in tension and opposite wood in three tropical rainforest angiosperm species |
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Conference Article |
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2006 |
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Proceedings of the fifth plant biomechanics conference |
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2 |
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521-526 |
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STFI-Packforsk AB |
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Stockholm (Sweden) |
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Salmén, L. |
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August 28th-september 1st, 2006 |
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EcoFoG @ webmaster @ |
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140 |
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Sugiyama, J.; Clairn B.; Almeras, T.; Yamamoto, H.; Okuyama, T. |
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Title |
Structural aspect of cellulose microfibrils in wood – links to biomechanics |
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Conference Article |
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Year |
2006 |
Publication |
Proceedings of the fifth plant biomechanics conference |
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2 |
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481-484 |
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STFI-Packforsk AB |
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Stockholm (Sweden) |
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Salmén, L. |
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August 28th-september 1st, 2006 |
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EcoFoG @ webmaster @ |
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142 |
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Muller, Félix |
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Estimation de la vitesse de décomposition du bois mort en forêt tropicale humide : rôle des caractéristiques individuelles et spécifiques |
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2008 |
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61 |
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Master's thesis |
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SupAgro |
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Montpellier - France |
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Hérault, B.; Beauchêne, J. |
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EcoFoG @ webmaster @ 211 |
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89 |
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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) |
Type |
Book Chapter |
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Year |
2006 |
Publication |
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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Houël, Emeline ; Rodrigues, Alice M.S. ; Jahn-Oyac, Arnaud ; Bessière, Jean-Marie ; Odonne, Guillaume ; Gonzales, German ; Espindola, Laila S. ; Eparvier, Véronique ; Deharo, Eric ; Stien, Didier |
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Title |
How can plant defences lead to valuable products? Inspiration from plant complexity in phytochemistry |
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Journal Article |
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Year |
2016 |
Publication |
Planta Medica |
Abbreviated Journal |
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81 |
Issue |
S01 |
Pages |
S1-S381 |
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Keywords |
Essential oils ; therapeutic switching ; antifungal agents ; antiparasitic agents ; biomimetic design |
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If plants are known for centuries as a valuable source of molecules, complexity remains and can open up numerous perspectives. Plants have indeed evolved a wide range of secondary metabolites as defense, competition or attraction compounds [1]. More particularly, the exceptional biodiversity encountered in the tropics, along with the presence of various pathogens and a strong herbivory especially linked to a rich entomofauna, leads to a promising chemodiversity, due to the constant and dynamic interactions between plants and their environment. Taking into account the role and “raison d'être”[2] of natural products, and the fact that all these molecules work together as complex mixtures can therefore lead to a new point of view, by shifting from the “magic bullet” classical approach to a “herbal shotgun” strategy[3]. We will illustrate the fact that, inspired by their ecological functions, and taking into account synergistic interactions, some therapeutic applications can be found for these versatile mixtures of compounds. In particular we examined whether the antidermatophytic activity of essential oils (EOs) obtained from particularly fragrant plant species from French Guiana could be used as an indicator for the discovery of active natural products against Leishmania amazonensis. A significant correlation was observed between antidermatophytic and antileishmanial activity, confirming the “alternative use” strategy in the case of EOs, and allowed us to highlight P. hispidum Sw. (Piperaceae) EO as a promising antileishmanial product [4]. We also illustrated the importance of synergistic effects through the example of the antifungal EO of Otacanthus azureus (Linden) Ronse (Plantaginaceae) [5] and the biomimetic design of optimized synergistic mixtures thanks to a full factorial experiment approach. |
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Thieme |
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Germany |
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Anglais |
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EcoFoG @ carole.legrand @ |
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270 |
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Touré, Seindé ; Falkowski, Michaël ; Dusfour, Isabelle ; Jahn-Oyac, Arnaud ; Odonne, Guillaume ; Stien, Didier ; Houël, Emeline ; Eparvier, Véronique |
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Title |
Ae aegypti larvicidal sesquiterpene alkaloids from Maytenus oblongata Reissek (Celastraceae) |
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Journal Article |
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Year |
2016 |
Publication |
Planta Medica |
Abbreviated Journal |
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81 |
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S01 |
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S1-S381 |
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Maytenus oblongata ; Aedes aegypti ; larvicidal ; sesquiterpenes alkaloids |
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Vector-borne diseases account for 17% of the estimated global burden of all infectious diseases [1]. For most of these, vector control remains the sole method to circumvent transmission and eventually epidemics in the absence of vaccine and/or specific arbovirose treatments. Furthermore, the efficacy of existing insecticides is decreasing due to the development of resistances [2, 3]. The situation urges to find novel insecticide or alternative method for controlling mosquito vectors. Taking into account these elements, in a constantly evolving epidemiological and regulatory context, the need to discover alternative, environmentally friendly, and safer biopesticides appears as crucial. Plants are a source of inspiration for new insecticides discovery as coevolution with phytophagous insects promoted the occurrence of a unique chemical diversity devoted to herbivory resistance at least in part [4, 5]. The insecticidal activity of 160 extracts from 87 species collected in French Guiana were evaluated on Ae. aegypti mosquitoes larvae. It was discovered that Maytenus oblongata Reissek (Celastraceae) stem ethyl acetate extract exhibited promising insecticidal properties, i.e., larvicidal and adulticidal activity against Ae. aegypti under laboratory conditions, without ecotoxicity (essay on Chironomus riparius and Daphnia magna) or cytotoxicity (Test on Ae. albopictus C6/36 cells and two human cell lines: KB and MCR5). Four β-dihydroagrofurane sesquiterpene alkaloids (1-4) and one steroid (5) were isolated from this extract. Compounds 2 (1-benzoyl,4-deoxy-alatamine) and 3 (1,2-dibenzoyl,4-deoxy-alatamine) showed LD50 of 7.75 µg/ml (95% confidence interval: 6.46 – 10.00 µg/ml) and 2.38 µg/ml (95% CI: 1.91 – 2.87 µg/ml), respectively, against Ae. aegypti larvae.
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Thieme |
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Germany |
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Anglais |
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EcoFoG @ carole.legrand @ |
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271 |
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Stien, D. ; Rodrigues, A.M.S. ; Makerri, C. ; Odonne, G. ; Eparvier, V. |
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Title |
Experimental design optimization of antimicrobial mixtures of active VOCs |
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Journal Article |
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2014 |
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Planta Medica |
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80 |
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16 |
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P1M3 |
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In this beginning of the 21st century, a child dies from malaria every minute in Sub-Saharan Africa and tuberculosis kills every 20 seconds [1]. Also, the hidden burden of chronic viral infections such as HIV and hepatitis B and C is sobering, affecting at least 1 in 20 people globally. In fact, many authors believe that humanity is on the verge of a post-antibiotic era [2]. We believe that something different has to be brought into the scientific debate around anti-infective agents. Our opinion is that natural synergistic mixtures, which have been protecting plants for ages, can inspire the discovery of synergistic pharmaceutical preparations. As a first model approach, a set of 66 essential oils has been analysed by GC-MS and tested (Minimal Inhibitory Concentration, MIC) against pathogenic yeasts Candida albicans and C. parapsilosis. A comparative holistic analysis of the dataset allowed us to identify 6 candidate anticandidal agents: Z-ligustilide, eugenol, eugenyl acetate, citral (mixture of geranial and neral), thymol, and β-citronellol. These compounds were combined following a full factorial experimental design approach in order to optimize the anticandidal selectivity index (SI = IC50 (MRC5 cells)/MIC) of the reconstituted mixtures. It was found that Z-ligustilide and eugenol are the two main factors that most contribute to the increase of the SI, while significantly positive interaction effect was recorded for these two compounds (Fig. 1). A positive interaction effect was also detected between citral and both Z-ligustilide and eugenol. These 3 plant defence compounds can therefore be used to construct anticandidal mixtures. |
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Thieme |
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Germany |
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EcoFoG @ carole.legrand @ |
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276 |
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Cerda, X.; Dejean, A. |
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Predation by ants on arthropods and other animals |
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2011 |
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Predation in the hymenoptera: an evolutionary perspective |
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39-78 |
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Transworld Research Network |
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Kerala - India |
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Polidori, C. |
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978-81-7895-530-8 |
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EcoFoG @ webmaster @ 16 |
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107 |
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Brémaud, I.; Minato, K.; Thibaut, B. |
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Mechanical damping of wood as related to species classification: a preliminary survey |
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2009 |
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Proceedings of the Sixth Plant Biomechanics Conference |
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548-554 |
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UMR EcoFoG |
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Cayenne, French Guyana |
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Thibaut, B. |
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November 16 - 21, 2009 |
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EcoFoG @ webmaster @ 12 |
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94 |
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