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OsMADS17 simultaneously increases grain number and grain weight in rice
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Journal Article
OsMADS17 simultaneously increases grain number and grain weight in rice
2023
Overview
During the processes of rice domestication and improvement, a trade-off effect between grain number and grain weight was a major obstacle for increasing yield. Here, we identify a critical gene
COG1
, encoding the transcription factor OsMADS17, with a 65-bp deletion in the 5′ untranslated region (5′ UTR) presented in cultivated rice increasing grain number and grain weight simultaneously through decreasing mRNA translation efficiency. OsMADS17 controls grain yield by regulating multiple genes and that the interaction with one of them,
OsAP2-39
, has been characterized. Besides, the expression of
OsMADS17
is regulated by OsMADS1 directly. It indicates that
OsMADS1
-
OsMADS17
-
OsAP2-39
participates in the regulatory network controlling grain yield, and downregulation of
OsMADS17
or
OsAP2-39
expression can further improve grain yield by simultaneously increasing grain number and grain weight. Our findings provide insights into understanding the molecular basis co-regulating rice yield-related traits, and offer a strategy for breeding higher-yielding rice varieties.
The trade-off between grain number and grain weight is a major obstacle for increasing rice yield. Here, the authors show that variation in 5’ UTR of
OsMADS17
can simultaneously increase grain number and grain weight through decreasing mRNA translation efficiency.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
