[Liu, Yonghai; Zhou, Liping; Zheng, Xinlin; Chen, Mengwei; Lin, Junlong; Yu, Le; Zhou, Jiankai; Liu, Fang] Zhaoqing Univ, Coll Life Sci, Zhaoqing 526061, Guangdong, Peoples R China.

[Wang, Ruozhong; Xiao, Langtao] Hunan Agr Univ, Hunan Prov Key Lab Phytohormones & Growth Dev, Changsha 410128, Hunan, Peoples R China.

[Liu, Yonghai] Guangdong Lab Lingnan Modern Agr Sci & Technol, Zhaoqing Branch Ctr, Zhaoqing 526238, Guangdong, Peoples R China.

[Liu, YH ] Z

Zhaoqing Univ, Coll Life Sci, Zhaoqing 526061, Guangdong, Peoples R China.

Functional Plant Biology 51;FP23148 https://doi.org/10.1071/FP23148 Submitted: 12 July 2023 Accepted: 16 January 2024 Published: 8 February 2024 © 2024 The Author(s) (or their employer(s)). Published by CSIRO Publishing Access Article Abstract Phytohormones play a key role in regulating tiller number. Ascorbic acid (Asc)-phytohormone interaction plays a pivotal role in the regulation of senescence. We analysed the relationship between Asc and the enzyme concentrations and gene transcript abundances related to the signal perception of strigolactones (SLs);the contents of four phytohormones (abscisic acid;ABA;jasmonic acid;JA;indole acetic acid;IAA;cytokinin;CTK);the enzyme concentrations and gene transcript abundances related to the synthesis or transportation of these four phytohormones. Our results showed that Asc deficiency leads to the upregulation of enzyme concentrations;gene transcript abundances related to the SL signal perception;ABA synthesis and IAA transport. 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