Journal
FRONTIERS IN PLANT SCIENCE
Volume 11, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2020.00114
Keywords
SPCH; stomatal development; stomatal lineage; stomatal patterning; stomatal differentiatation
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Funding
- National Natural Science Foundation of China (NSFC) [31670185, 31870251, 31800237]
- Ministry of Agriculture of the People's Republic of China [2016ZX08009003-002]
- major project of Science and Technology of Gansu province [17ZD2NA016-5, 17ZD2NA015-06]
- China Postdoctoral Science Foundation [2017M620478]
- Chang Jiang Scholars Program of China (2017)
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Stomata, the small pores on the epidermis of plant shoot, control gas exchange between the plant and environment and play key roles in plant physiology, evolution, and global ecology. Stomatal development is initiated by the basic helix-loop-helix (bHLH) transcription factor SPEECHLESS (SPCH), whose central importance in stomatal development has recently come to light. SPCH integrates intralineage signals and serves as an acceptor of hormonal and environmental signals to regulate stomatal density and patterning during the development. SPCH also plays a direct role in regulating asymmetric cell division in the stomatal lineage. Owing to its importance in stomatal development, SPCH expression is tightly and spatiotemporally regulated. The purpose of this review is to provide an overview of the SPCH-mediated regulation of stomatal development, reinforcing the idea that SPCH is the central molecular hub for stomatal development.
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