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, Liuyan Yang College of Agriculture, Nanjing Agricultural University , Nanjing , China Search for other works by this author on: Oxford Academic Jiahao Duan College of Agriculture, Nanjing Agricultural University , Nanjing , China Search for other works by this author on: Oxford Academic Yu Liu College of Agriculture, Nanjing Agricultural University , Nanjing , China Search for other works by this author on: Oxford Academic Wei Hu College of Agriculture, Nanjing Agricultural University , Nanjing , China Search for other works by this author on: Oxford Academic Xingke Liu College of Agriculture, Nanjing Agricultural University , Nanjing , China Search for other works by this author on: Oxford Academic Youhua Wang College of Agriculture, Nanjing Agricultural University , Nanjing , China Search for other works by this author on: Oxford Academic Zhiguo Zhou College of Agriculture, Nanjing Agricultural University , Nanjing , China Search for other works by this author on: Oxford Academic Wenqing Zhao College of Agriculture, Nanjing Agricultural University , Nanjing , China Correspondence: zhaowenqing@njau.edu.cn Search for other works by this author on: Oxford Academic
https://orcid.org/0000-0003-2895-0879 Journal of Experimental Botany, Volume 75, Issue 11, 7 June 2024, Pages 3483–3499, https://doi.org/10.1093/jxb/erae122
Published:
14 March 2024
Article history
Received:
22 November 2023
Editorial decision:
28 February 2024
Accepted:
13 March 2024
Published:
14 March 2024
Corrected and typeset:
19 April 2024
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Liuyan Yang, Jiahao Duan, Yu Liu, Wei Hu, Xingke Liu, Youhua Wang, Zhiguo Zhou, Wenqing Zhao, Changes in carbohydrate distribution in cotton photosynthetic organs and increase in boll weight reduce yield loss under high temperature, Journal of Experimental Botany, Volume 75, Issue 11, 7 June 2024, Pages 3483–3499, https://doi.org/10.1093/jxb/erae122
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Abstract
Yield of cotton (Gossypium hirsutum) does not always fall with high temperature (HT) even though this induces significant reductions in fruit retention. To investigate the underlying mechanisms, a greenhouse experiment was conducted with two temperature regimes [control treatment, 28 °C; high temperature (HT), 34 °C] for 7 d. Results showed HT did not significantly influence cotton yield, but reduced boll number and increased boll weight. The 13C distribution ratio of the leaf subtending the cotton boll (LSCB) decreased while that of the cotton boll increased under HT. Transcriptomic and proteomic analyses of the LSCB revealed up-regulated genes involved in cytokinin and jasmonic acid synthesis, as well as SWEET15 (GH_D01G0218), which positively regulated photosynthesis and transport photosynthate, ultimately leading to increased boll weight. After 7 d recovery from HT, the 13C distribution ratio of the LSCB increased while that of the cotton boll decreased. However, boll weight still increased, which was related to increased amylase and sucrose phosphate synthase activities and up-regulated sucrose transport genes in the main-stem leaf and capsule wall. Thus, both accelerated sucrose synthesis and transport in the LSCB under HT and increased sucrose supply ability of the main-stem leaf and capsule wall after recovery from HT contributed to an increased boll weight, which finally maintained cotton yield.
Boll weight, cotton (Gossypium hirsutum L.), high temperature, leaf subtending the cotton boll, sucrose synthesis, sucrose transport
© The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact 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:
Research Papers > Plant—Environment Interactions
Editor: Robert Sharwood Robert Sharwood Editor Search for other works by this author on: Oxford Academic
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