FRIZZLE PANICLE (FZP) regulates rice spikelets development through modulating cytokinin metabolism

The number of grains per panicle is an important factor in determining rice yield. The DST-OsCKX2 module has been demonstrated to regulate panicle development in rice by controlling cytokinin content. However, to date, how the function of DST-OsCKX2 module is regulated during panicle development rem...

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Bibliographic Details
Published in:BMC plant biology 2023-12, Vol.23 (1), p.650-650, Article 650
Main Authors: Wang, Wei, Chen, Wenqiang, Wang, Junmin
Format: Article
Language:English
Subjects:
Analysis
Cloning
Crop yield
Cytokinin
Cytokinins
Dehydrogenases
DST-OsCKX2 module
FZP
Genes
Grain
Grain number
Homeostasis
Meristems
Metabolism
Metabolites
Modules
Morphology
Plant metabolites
Production management
Properties
Rice
Signal transduction
Transcription factors
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Summary:The number of grains per panicle is an important factor in determining rice yield. The DST-OsCKX2 module has been demonstrated to regulate panicle development in rice by controlling cytokinin content. However, to date, how the function of DST-OsCKX2 module is regulated during panicle development remains obscure. In this study, the ABNORMAL PANICLE 1 (ABP1), a severely allele of FRIZZY PANICLE (FZP), exhibits abnormal spikelets morphology. We show that FZP can repress the expression of DST via directly binding to its promotor. Consistently, the expression level of OsCKX2 increased and the cytokinin content decreased in the fzp mutant, suggesting that the FZP acts upstream of the DST-OsCKX2 to maintain cytokinin homeostasis in the inflorescence meristem. Our results indicate that FZP plays an important role in regulating spikelet development and grain number through mediating cytokinin metabolism.
ISSN:1471-2229
1471-2229
DOI:10.1186/s12870-023-04671-4