Stress-induced senescence and plant tolerance to abiotic stress
| Autor: | Eduardo Blumwald, Nir Sade, Maria del Mar Rubio-Wilhelmi, Kamolchanok Umnajkitikorn |
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| Rok vydání: | 2017 |
| Předmět: |
Crops
Agricultural 0106 biological sciences 0301 basic medicine Plant senescence Senescence Abiotic component Perennial plant Physiology Abiotic stress Crop yield fungi Stress induced food and beverages Plant Science Biology Photosynthesis 01 natural sciences Crop Production Plant Leaves 03 medical and health sciences 030104 developmental biology Stress Physiological Botany Plant Physiological Phenomena 010606 plant biology & botany |
| Zdroj: | Journal of Experimental Botany. 69:845-853 |
| ISSN: | 1460-2431 0022-0957 |
| Popis: | 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 stress-induced 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. |
| Databáze: | OpenAIRE |
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