Modifications qualitative et quantitative en composés phénoliques dans les feuilles de hêtre soumises à des contraintes abiotiques

Abstract : This study aims at clarifying secondary metabolite contribution to plant cell defense in beech exposed to water stress or defoliation. Both quantitative, through flavonol content evolution across growth period and biochemical analysis of total phenol content, and qualitative approches, through metabolic profil of eleven specific phenolic compounds, were used. A higher total phenol content was observed in drought treated trees compared to control. Furthermore, the lower carbon availability following defoliation treatment likely limits the flavonol biosynthesis capacity. This work supports the phenol contribution to defense against oxidative stress due to drought. This contribution however requires high carbon availability that can be restricted following defoliation or severe drought conditions. Finaly, Coumaroylquinic acid seems to be one of the main actors of secondary metabolite response to stress.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/public/BUS_M_2016_HEYMES_RAPHAEL.pdf
Complete list of metadatas

Cited literature [41 references]  Display  Hide  Download

https://hal.univ-lorraine.fr/hal-01824603
Contributor : Memoires Ul <>
Submitted on : Wednesday, June 27, 2018 - 2:07:20 PM
Last modification on : Thursday, June 28, 2018 - 1:09:33 AM
Long-term archiving on : Thursday, September 27, 2018 - 3:18:53 AM

File

BUS_M_2016_HEYMES_RAPHAEL.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-01824603, version 1

Collections

Citation

Raphaël Heymes. Modifications qualitative et quantitative en composés phénoliques dans les feuilles de hêtre soumises à des contraintes abiotiques. Sciences de l'environnement. 2016. ⟨hal-01824603⟩

Share

Metrics

Record views

52

Files downloads

44