Stress-induced senescence and plant tolerance to abiotic stress

Nir Sade, Mariá Del Mar Rubio-Wilhelmi, Kamolchanok Umnajkitikorn, Eduardo Blumwald

Research output: Contribution to journalReview articlepeer-review

Abstract

Senescence is an age-dependent process, ultimately leading to plant death, that in annual crop plants overlaps with the reproductive stage of development. Research on the molecular and biochemical mechanisms of leaf senescence has revealed a multi-layered regulatory network operating to control age-dependent processes. Abiotic stressinduced senescence challenges source-sink relationships and results in significant reduction in crop yields. Although processes associated with plant senescence are well studied, the mechanisms regulating stress-induced senescence are not well known. Here, we discuss the effects of abiotic stress on crop productivity, mechanisms associated with stress-induced senescence, and the possible use of these mechanisms for the generation of plant stress tolerance. We emphasize the involvement of source strength and stability of the photosynthetic apparatus in this process, and suggest a possible role of a perennial plant life strategy for the amelioration of stress-induced senescence.

Original languageEnglish
Pages (from-to)845-853
Number of pages9
JournalJournal of Experimental Botany
Volume69
Issue number4
DOIs
StatePublished - 12 Feb 2018
Externally publishedYes

Keywords

  • Abiotic stress
  • annuals
  • perennials
  • senescence
  • source-sink
  • stress-induced senescence

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