Evidence map›Paper›PMID 40299840›Full record

ArticlePlant biotechnology journal2025

A MYB61-SWB9-KOs module regulates grain chalkiness via gibberellin biosynthesis in rice endosperm.

Yujuan Chen, Suozhen Hui, Huijuan Li, Guiai Jiao, Ruijie Cao, Liang Zhou, Jingxin Wang, Amos Musyoki Mawia, Lingwei Yang, Yu Wu and 9 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Plant biotechnology journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Article
  2. Genome-Wide Identification of thePlants (Basel, Switzerland) · 2026
    Article
  3. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

19 authors.

Yujuan Chen *State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Suozhen Hui *State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Huijuan Li *State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Guiai JiaoState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Ruijie CaoState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Liang ZhouState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Jingxin WangState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Amos Musyoki MawiaState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Lingwei YangState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Yu WuState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Yuanyaun ZhangState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Zhonghua ShengState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.ORCID https://orcid.org/0000-0002-5960-8307
Gaoneng ShaoState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Fengli ZhaoState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Ling WangState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Yusong LyuState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Shaoqing TangState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.
Shikai HuState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.ORCID https://orcid.org/0000-0003-4550-1645
Peisong HuState Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China.

Funding

National Natural Science Foundation of China 32071991
6 · The paper itself

Abstract

Grain chalkiness leads to the deterioration of grain appearance quality, which affects grain processing quality and the market value of rice. Gibberellin plays a crucial role in seed germination and plant growth, but its mechanism on endosperm starch synthesis and rice grain chalkiness formation remains largely elusive. Here, we identified a grain white belly (chalkiness in the belly area of grain) gene, SWB9, which encodes a kinesin-4 protein with a conserved ATPase domain and a coiled-coil domain. The mutation of SWB9 affects the starch structure, resulting in a grain white belly. SWB9 regulates endogenous gibberellin synthesis and accumulation in endosperm by directly binding to the promoter of ent-kaurene oxidase genes (KO1, KO2 and KOL5) encoding gibberellin-biosynthetic enzymes, and negatively regulates their expression. The loss of SWB9 function resulted in higher gibberellin content in the endosperm of swb9 than that of the wild type. Besides, a MYB transcription factor, MYB61 binds to the promoter of SWB9 and activates its expression. The grain of myb61 showed the same white belly phenotype as swb9, while overexpression of SWB9 in myb61 inhibited the grain white belly phenotype. Furthermore, the exogenous GA

Indexed as

Edible GrainEndospermGibberellinsOryzaPlant ProteinsTranscription FactorsGene Expression Regulation, PlantPromoter Regions, GeneticStarchGibberellinsPlant ProteinsStarchTranscription Factorsamylopectin chain lengthchalkinessgibberellin biosynthesisgrain qualityrice

Identifiers

PMID40299840
PMCPMC12205885

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.