Journal
MOLECULAR PLANT
Volume 8, Issue 5, Pages 677-688Publisher
CELL PRESS
DOI: 10.1016/j.molp.2015.01.008
Keywords
agronomic trait; crop; miR156; SQUAMOSA-PROMOTER BINDING PROTEIN-LIKE (SPL)
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Funding
- National Science Foundation of China (NSFC) [31430008]
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In the past two decades, members of the SQUAMOSA-PROMOTER BINDING PROTEIN-LIKE (SPL) family of transcription factors, first identified in Antirrhinum majus, have emerged as pivotal regulators of diverse biological processes in plants, including the timing of vegetative and reproductive phase change, leaf development, tillering/branching, plastochron, panicle/tassel architecture, fruit ripening, fertility, and response to stresses. Transcripts of a subset of SPLs are targeted for cleavage and/or translational repression by microRNA156s (miR156s). The levels of miR156s are regulated by both endogenous developmental cues and various external stimuli. Accumulating evidence shows that the regulatory circuit around the miR156/SPL module is highly conserved among phylogenetically distinct plant species, and plays important roles in regulating plant fitness, biomass, and yield. With the expanding knowledge and a mechanistic understanding of their roles and regulatory relationship, we can now harness the miR156/SPL module as a plethora of tools to genetically manipulate crops for optimal parameters in growth and development, and ultimately to maximize yield by intelligent design of crops.
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