Maize STEM BENDING1 controls plant architecture through cell wall and auxin pathways.

Shiya Zhao, Babar Farid, Xintong Liu, Liang Dong, Fang Yang

Abstract readLetter

In one paragraph

Article in Advanced biotechnology, 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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5 · Who and what money

Authors and funding

5 authors.

Shiya ZhaoGuangdong Provincial Key Laboratory of Plant Resources, School of Agriculture and Biotechnology, Sun Yat-Sen University, Shenzhen, 518107, China.

Babar FaridInstitute of Plant Breeding and Biotechnology, MNS University of Agriculture, Multan, 60000, Pakistan.

Xintong LiuGuangdong Provincial Key Laboratory of Plant Resources, School of Agriculture and Biotechnology, Sun Yat-Sen University, Shenzhen, 518107, China.

Liang DongGuangdong Provincial Key Laboratory of Plant Resources, School of Agriculture and Biotechnology, Sun Yat-Sen University, Shenzhen, 518107, China. dongliang7@mail.sysu.edu.cn.

Fang YangGuangdong Provincial Key Laboratory of Plant Resources, School of Agriculture and Biotechnology, Sun Yat-Sen University, Shenzhen, 518107, China. yangf389@mail.sysu.edu.cn.ORCID http://orcid.org/0000-0002-1915-8874

Funding

Shenzhen Science and Technology Program JCYJ20240813151013018

6 · The paper itself

Abstract

Crop yield is largely determined by plant architecture. Identifying the key genes responsible for maize architecture can help optimize plant architecture for high-density planting. Here, we characterized a dominant stem bending mutant (Stb1) in maize, which exhibited bent stems and curved leaves leading to a slanted architecture. Genetic mapping delimited Stb1 to a 3.7 Mb interval on chromosome 1. Transcriptome analysis suggested that Stb1 mutation impaired the molecular pathways related to cell wall components and environmental stimuli. Consistently, lignin and hemicellulose contents were altered between the convex side and concave side of Stb1 stems. In addition, the shoot gravitropism regulator LAZY1 transcripts and endogenous auxin levels were differentially accumulated between the two sides of Stb1 stems. Our study reveals that STB1 plays a role in maintaining upright stems through cell wall and auxin-related pathways, providing a new target for optimizing maize shoot architecture.

Indexed as

Secondary cell wallStalk lodging resistanceStem bendingZea mays L

Identifiers

PMID42886414

DOI10.1016/j.jgg.2025.11.014

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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.