Evidence map›Paper›PMID 42274848›Full record

ArticleRice (New York, N.Y.)2026

OsHOX24 Modulates Grain Size and Salt Tolerance Via OsPP2C09 in Rice.

Bin Gao, Shibo Li, Zhixue Huo, Leqin Chang, Jing Ning, Wei He, Liang Luo, Mengna Mo, Yuxing Zhou, Liangcai Leng and 7 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Rice (New York, N.Y.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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4 · The record

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5 · Who and what money

Authors and funding

17 authors.

Bin Gao *National Center for Evaluation of Agricultural Wild Plants (Rice), Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China.
Shibo Li *National Center for Evaluation of Agricultural Wild Plants (Rice), Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China.
Zhixue HuoNational Center for Evaluation of Agricultural Wild Plants (Rice), Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China.
Leqin ChangNational Center for Evaluation of Agricultural Wild Plants (Rice), Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China.
Jing NingNational Center for Evaluation of Agricultural Wild Plants (Rice), Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China.
Wei HeNational Center for Evaluation of Agricultural Wild Plants (Rice), Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China.
Liang LuoNational Center for Evaluation of Agricultural Wild Plants (Rice), Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China.
Mengna MoNational Center for Evaluation of Agricultural Wild Plants (Rice), Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China.
Yuxing ZhouNational Center for Evaluation of Agricultural Wild Plants (Rice), Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China.
Liangcai LengNational Center for Evaluation of Agricultural Wild Plants (Rice), Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China.
Dali ZengCollege of Advanced Agricultural Sciences, Zhejiang A& F University, Hangzhou, China.
Guangheng ZhangState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 311401, China.
Li ZhuState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 311401, China.
Longbiao GuoState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 311401, China.
Deyong RenState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 311401, China.
Qian QianState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 311401, China. qianqian188@hotmail.com.
Min HuState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 311401, China. humin@caas.cn.

Funding

China Postdoctoral Science Foundation BX20200372National Natural Science Foundation of China 32188102the Agricultural science and Technology Innovation Program (ASTIP) CAAS-ZDRW202401the National Key Research and Development Programme of China 2023YFF1000500Zhejiang Natural Science Foundation LQN25C130010
6 · The paper itself

Abstract

Grain size and stress resistance are key determinants of high and stable yield in rice. However, the genetic and regulatory mechanisms that coordinate these traits remain elusive. Here, we report that OsHOX24 encoding a HD-ZIP I transcription factor plays a dual role in regulating grain size and salt tolerance. OsHOX24 promotes grain length and weight by enhancing cell division and expansion in spikelet hulls, while it compromises salt tolerance. Additionally, we demonstrated that OsHOX24 participates in ABA signaling and directly activates OsPP2C09 transcription by binding to its promoter, thereby jointly regulate grain size and salt tolerance. Finally, haplotype analysis revealed differentiation of OsHOX24 between indica and japonica, with the prevalent indica haplotype (Hap1) associated with superior grain size and salt tolerance. Taken together, our study not only provides novel insights into the molecular mechanisms that regulate grain size and salt tolerance, but also offers a valuable haplotype-specific target for breeding high-yielding and salt-resilient rice.

Indexed as

Grain sizeRiceSalt tolerance

Identifiers

PMID42274848
PMCPMC13486418

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