A Zea genus-specific micropeptide controls kernel dehydration in maize

Yu, Yanhui, Li, Wenqiang, Liu, Yuanfang, Liu, Yanjun, Zhang, Qinzhi, Ouyang, Yidan, Ding, Wenya, Xue, Yu, Zou, Yilin, Yan, Junjun, Jia, Anqiang, Yan, Jiali, Hao, Xinfei, Gou, Yujie, Zhai, Zhaowei, Liu, Longyu, Zheng, Yang, Zhang, Bao, Xu, Jieting, Yang, Ning, Xiao, Yingjie, Zhuo, Lin, Lai, Zhibing, Yin, Ping, Liu, Hai-Jun, Fernie, Alisdair R, Jackson, David, Yan, Jianbing (November 2024) A Zea genus-specific micropeptide controls kernel dehydration in maize. Cell. ISSN 0092-8674 (Public Dataset)

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Abstract

Kernel dehydration rate (KDR) is a crucial production trait that affects mechanized harvesting and kernel quality in maize; however, the underlying mechanisms remain unclear. Here, we identified a quantitative trait locus (QTL), qKDR1, as a non-coding sequence that regulates the expression of qKDR1 REGULATED PEPTIDE GENE (RPG). RPG encodes a 31 amino acid micropeptide, microRPG1, which controls KDR by precisely modulating the expression of two genes, ZmETHYLENE-INSENSITIVE3-like 1 and 3, in the ethylene signaling pathway in the kernels after filling. microRPG1 is a Zea genus-specific micropeptide and originated de novo from a non-coding sequence. Knockouts of microRPG1 result in faster KDR in maize. By contrast, overexpression or exogenous application of the micropeptide shows the opposite effect both in maize and Arabidopsis. Our findings reveal the molecular mechanism of microRPG1 in kernel dehydration and provide an important tool for future crop breeding.

Item Type: Paper
Subjects: organism description > plant > maize
organism description > plant
CSHL Authors:
Communities: CSHL labs > Jackson lab
SWORD Depositor: CSHL Elements
Depositing User: CSHL Elements
Date: 7 November 2024
Date Deposited: 18 Nov 2024 14:08
Last Modified: 18 Nov 2024 14:08
Related URLs:
Dataset ID:
  • GSA: CRA013670
  • GSA: CRA013671
  • GSA: CRA013672
  • GSA: CRA013673
  • https://doi.org/10.5281/zenodo.13924714
URI: https://repository.cshl.edu/id/eprint/41733

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