Does the memory of a first water deficit enable a more efficient response to a subsequent water deficit? - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Poster De Conférence Année : 2022

Does the memory of a first water deficit enable a more efficient response to a subsequent water deficit?

Cécile Jacques
  • Fonction : Auteur
  • PersonId : 1146660
Sylvie Girodet
  • Fonction : Auteur
  • PersonId : 1146661
Jonathan J. Kreplak
Christophe Salon
Marion Prudent

Résumé

In the current context of climate change, periods of water deficit occur more frequently along the crop cycle, leading to high yield losses. To limit the negative impact of recurrent water deficits, plants can adapt, via the mobilization of “stress memory”, allowing them to respond to a subsequent stress in a faster and/or more intensive manner. After a first stress event, plants can keep an imprint of this stress via the induction of epigenetic (e.g. memory gene regulation), physiological (e.g. stomatal closure) and molecular (e.g. compound accumulation) changes. When maintained between two stress periods, these changes may prepare plants for a subsequent water deficit. This work addresses the potential role of stress memory in plant adaptation to recurrent water deficits with a special focus on plant hydro-mineral uptake by roots. For this purpose, an experiment was conducted on the high throughput phenotyping platform (4PMI, Dijon, France), where several frequencies of water deficits were applied to pea plants. An integrative approach, including a structure-function ecophysiological framework characterizing plant hydromineral nutrition (nutrients and beneficial elements), enriched with root and nodule transcriptomic analyses (RNA-seq), and metabolomic analyses revealed the mechanisms underlying the “memory effect” throughout the plant cycle. We will discuss the role of memory genes during recurrent stresses and plant strategies to acquire water as well as macro- and micro-nutrients more efficiently during recurrent stresses. This work offers the new perspective of considering plant memory in the design of ideotypes better adapted to multiple stress events in a context of climate
Fichier non déposé

Dates et versions

hal-03714361 , version 1 (05-07-2022)

Identifiants

  • HAL Id : hal-03714361 , version 1

Citer

Cécile Jacques, Sylvie Girodet, Jonathan J. Kreplak, Christophe Salon, Marion Prudent. Does the memory of a first water deficit enable a more efficient response to a subsequent water deficit?. EMBO Workshop. Molecular responses of plants facing climate change, Jun 2022, Montpellier, France. ⟨hal-03714361⟩
15 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More