期刊
NEW PHYTOLOGIST
卷 230, 期 5, 页码 1754-1760出版社
WILEY
DOI: 10.1111/nph.17322
关键词
blue light; glucose; guard cells; malate; plant growth; starch; stomatal opening; sucrose
资金
- Swiss National Science Foundation [SNSF-grant 310030_185241]
- ETH Zurich
The ion transport and metabolism of guard cell membrane are closely related and critical for stomatal opening. Organic metabolites in guard cells play various roles during stomatal opening, but their origin and fate are still debated. Recent research highlights the tight correlation between mesophyll and guard cell metabolism.
Guard cell membrane ion transport and metabolism are deeply interconnected, and their coordinated regulation is integral to stomatal opening. Whereas ion transport is exceptionally well understood, how guard cell metabolism influences stomatal movements is less well known. Organic metabolites, such as malate and sugars, fulfill several functions in guard cells during stomatal opening as allosteric activators, counter-ions, energy source and osmolytes. However, their origin and exact fate remain debated. Recent work revealed that the guard cell carbon pool regulating stomatal function and plant growth is mostly of mesophyll origin, highlighting a tight correlation between mesophyll and guard cell metabolism. This review discusses latest research into guard cell carbon metabolism and its impact on stomatal function and whole plant physiology.
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