TY - JOUR
T1 - Stress-induced senescence and plant tolerance to abiotic stress
AU - Sade, Nir
AU - Del Mar Rubio-Wilhelmi, Mariá
AU - Umnajkitikorn, Kamolchanok
AU - Blumwald, Eduardo
N1 - Publisher Copyright:
© 2018 The Author(s).
PY - 2018/2/12
Y1 - 2018/2/12
N2 - 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.
AB - 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.
KW - Abiotic stress
KW - annuals
KW - perennials
KW - senescence
KW - source-sink
KW - stress-induced senescence
UR - http://www.scopus.com/inward/record.url?scp=85042293404&partnerID=8YFLogxK
U2 - 10.1093/jxb/erx235
DO - 10.1093/jxb/erx235
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C2 - 28992323
AN - SCOPUS:85042293404
SN - 0022-0957
VL - 69
SP - 845
EP - 853
JO - Journal of Experimental Botany
JF - Journal of Experimental Botany
IS - 4
ER -