Defining Mechanisms of C3 to CAM Photosynthesis Transition toward Enhancing Crop Stress Resilience

被引:6
作者
Tan, Bowen [1 ]
Chen, Sixue [1 ]
机构
[1] Univ Mississippi, Dept Biol, Oxford, MS 38677 USA
关键词
Crassulacean acid metabolism; C-3 to CAM transition; facultative CAM; photosynthesis; climate change; water-use efficiency; CAM engineering; CRASSULACEAN-ACID-METABOLISM; HALOPHYTE MESEMBRYANTHEMUM-CRYSTALLINUM; PHOSPHOENOLPYRUVATE CARBOXYLASE; GENE-EXPRESSION; INDUCTION; PLANT; DROUGHT; PHOSPHORYLATION; CARBOXYKINASE; TRANSPORTERS;
D O I
10.3390/ijms241713072
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Global climate change and population growth are persistently posing threats to natural resources (e.g., freshwater) and agricultural production. Crassulacean acid metabolism (CAM) evolved from C-3 photosynthesis as an adaptive form of photosynthesis in hot and arid regions. It features the nocturnal opening of stomata for CO2 assimilation, diurnal closure of stomata for water conservation, and high water-use efficiency. To cope with global climate challenges, the CAM mechanism has attracted renewed attention. Facultative CAM is a specialized form of CAM that normally employs C-3 or C-4 photosynthesis but can shift to CAM under stress conditions. It not only serves as a model for studying the molecular mechanisms underlying the CAM evolution, but also provides a plausible solution for creating stress-resilient crops with facultative CAM traits. This review mainly discusses the recent research effort in defining the C-3 to CAM transition of facultative CAM plants, and highlights challenges and future directions in this important research area with great application potential.
引用
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页数:15
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