Correlations between leaf toughness and phenolics among species in contrasting environments of Australia and New Caledonia
| Autor: | Paula J. Peeters, Jennifer Read, Elizabeth Caldwell, Byron B. Lamont, Fiona J. Clissold, Tanguy Jaffré, Stuart Kerr, Michel De Garine-Wichatitsky, Alexanda Sarah-Jane Chatain, Gordon Drummond Sanson |
|---|---|
| Přispěvatelé: | School of Biological Sciences [Clayton], Monash University [Clayton], Julius Center for Health Sciences and Primary Care, VU University Medical Center [Amsterdam], Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD [France-Sud]), Laboratoire de botanique et d'écologie appliquées, School of Biological Sciences, Monash University [Melbourne], Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
0106 biological sciences
L51 - Physiologie animale - Nutrition Trade-offs chemical Plant Science Woodland forêt tropicale 01 natural sciences Trees mechanical defence MESH: Phenols K01 - Foresterie - Considérations générales Savane MESH: Biomechanics geography.geographical_feature_category leaf toughness 000 - Autres thèmes Feuille Vegetation Composition chimique Biomechanical Phenomena MESH: Plant Leaves MESH: Tannins Antiherbivore defence Répulsif d'origine végétale Phenolics Arbuste Leaf toughness defence phenolics F60 - Physiologie et biochimie végétale Chemical defence MESH: Australia Rainforest Environment Biology 010603 evolutionary biology Pâturage Shrubland Plante d'abroutissement New Caledonia Phenols Species Specificity Botany Temperate climate MESH: Species Specificity [SDV.BV]Life Sciences [q-bio]/Vegetal Biology MESH: Environment Propriété physicochimique geography Australia Plant community Original Articles 15. Life on land Evergreen MESH: New Caledonia Plant Leaves MESH: Trees trade-offs Composé phénolique Soil water Mechanical defence [SDE.BE]Environmental Sciences/Biodiversity and Ecology Tannins 010606 plant biology & botany |
| Zdroj: | Annals of Botany Annals of Botany, Oxford University Press (OUP), 2009, 103 (5), pp.757-67. ⟨10.1093/aob/mcn246⟩ |
| ISSN: | 0305-7364 1095-8290 |
| DOI: | 10.1093/aob/mcn246⟩ |
| Popis: | †Background and Aims Plants are likely to invest in multiple defences, given the variety of sources of biotic andabiotic damage to which they are exposed. However, little is known about syndromes of defence across plantspecies and how these differ in contrasting environments. Here an investigation is made into the associationbetween carbon-based chemical and mechanical defences, predicting that species that invest heavily in mechan-ical defence of leaves will invest less in chemical defence.†Methods A combination of published and unpublished data is used to test whether species with tougher leaveshave lower concentrations of phenolics, using 125 species from four regions of Australia and the Pacific island ofNew Caledonia, in evergreen vegetation ranging from temperate shrubland and woodland to tropical shrublandand rainforest. Foliar toughness was measured as work-to-shear and specific work-to-shear (work-to-shear perunit leaf thickness). Phenolics were measured as ‘total phenolics’ and by protein precipitation (an estimate oftannin activity) per leaf dry mass.†Key Results Contrary to prediction, phenolic concentrations were not negatively correlated with either measureof leaf toughness when examined across all species, within regions or within any plant community. Instead,measures of toughness (particularly work-to-shear) and phenolics were often positively correlated in shrublandand rainforest (but not dry forest) in New Caledonia, with a similar trend suggested for shrubland in south-western Australia. The common feature of these sites was low concentrations of soil nutrients, with evidenceof P limitation.†Conclusions Positive correlations between toughness and phenolics in vegetation on infertile soils suggest thatadditive investment in carbon-based mechanical and chemical defences is advantageous and cost-effective inthese nutrient-deficient environments where carbohydrate may be in surplus.Key words: Antiherbivore defence, leaf toughness, mechanical defence, chemical defence, phenolics, trade-offs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|