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, Chengxiang Song National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University , Wuhan 430070 , China Search for other works by this author on: Oxford Academic Kaidi Xie National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University , Wuhan 430070 , China Search for other works by this author on: Oxford Academic Hao Chen National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University , Wuhan 430070 , China Search for other works by this author on: Oxford Academic Shuhao Xu, National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University , Wuhan 430070 , China Search for other works by this author on: Oxford Academic Hailiang Mao National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University , Wuhan 430070 , China Correspondence: maohailiang@mail.hzau.edu.cn Search for other works by this author on: Oxford Academic
https://orcid.org/0000-0002-6704-7917 Journal of Experimental Botany, Volume 75, Issue 8, 15 April 2024, Pages 2372–2384, https://doi.org/10.1093/jxb/erae012
Published:
11 January 2024
Article history
Received:
16 August 2023
Editorial decision:
07 January 2024
Accepted:
10 January 2024
Published:
11 January 2024
Corrected and typeset:
20 February 2024
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Chengxiang Song, Kaidi Xie, Hao Chen, Shuhao Xu,, Hailiang Mao, Wheat ESCRT-III protein TaSAL1 regulates male gametophyte transmission and controls tillering and heading date, Journal of Experimental Botany, Volume 75, Issue 8, 15 April 2024, Pages 2372–2384, https://doi.org/10.1093/jxb/erae012
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Abstract
Charged multivesicular protein 1 (CHMP1) is a member of the endosomal sorting complex required for transport-III (ESCRT-III) complex that targets membrane localized signaling receptors to intralumenal vesicles in the multivesicular body of the endosome and eventually to the lysosome for degradation. Although CHMP1 plays roles in various plant growth and development processes, little is known about its function in wheat. In this study, we systematically analysed the members of the ESCRT-III complex in wheat (Triticum aestivum) and found that their orthologs were highly conserved in eukaryotic evolution. We identified CHMP1 hom*ologous genes, TaSAL1s, and found that they were constitutively expressed in wheat tissues and essential for plant reproduction. Subcellular localization assays showed these proteins aggregated with and closely associated with the endoplasmic reticulum when ectopically expressed in tobacco leaves. We also found these proteins were toxic and caused leaf death. A genetic and reciprocal cross analysis revealed that TaSAL1 leads to defects in male gametophyte biogenesis. Moreover, phenotypic and metabolomic analysis showed that TaSAL1 may regulate tillering and heading date through phytohormone pathways. Overall, our results highlight the role of CHMP1 in wheat, particularly in male gametophyte biogenesis, with implications for improving plant growth and developing new strategies for plant breeding and genetic engineering.
CHMP1, heading date, male gametophyte biogenesis, TaSAL1, tillering, wheat
© The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissions@oup.com
This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/pages/standard-publication-reuse-rights)
Issue Section:
Crop Molecular Genetics
Editor: Zoe Wilson Zoe Wilson Editor University of Nottingham , UK Search for other works by this author on: Oxford Academic
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