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The identification and characterization of a plant height and grain length related gene in rice. | LitMetric

The identification and characterization of a plant height and grain length related gene in rice.

Front Plant Sci

State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology (Ministry of Education), School of Life Sciences, Fudan University, Shanghai, China.

Published: March 2023

AI Article Synopsis

Article Abstract

Plant height and grain size are important agronomic traits affecting rice yield. Various plant hormones participate in the regulation of plant height and grain size in rice. However, how these hormones cooperate to regulate plant height and grain size is poorly understood. In this study, we identified a brassinosteroid-related gene, , from an introgression line constructed using , that caused brassinosteroid insensitivity and reduced plant height and grain length in rice. Further study showed that is a new allele of with a single-nucleotide polymorphism (G to A) in the coding region, leading to a T988I conversion at a conserved site of the kinase domain. By combining yeast one-hybrid assays, chromatin immunoprecipitation-quantitative PCR and gene expression quantification, we demonstrated that OsARF17, an auxin response factor, could bind to the promoter region of and positively regulated expression, thereby regulating the plant height and grain length, and influencing brassinosteroid sensitivity. Haplotype analysis showed that the consociation of / conferred an increase in grain length. Overall, this study identified as a new allele of that regulates plant height and grain length in rice, revealed that brassinosteroid and auxin might coordinate through - interaction, and provided a potential breeding target for improvement of rice yield.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10080003PMC
http://dx.doi.org/10.3389/fpls.2023.1152196DOI Listing

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