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Dynamic gene regulatory networks improving spike fertility through regulation of floret primordia fate in wheat

The developmental process of spike is critical for spike fertility through affecting floret primordia fate in wheat; however, the genetic regulation of this dynamic and complex developmental process remains unclear. Here, we conducted a high temporal-resolution analysis of spike transcriptomes and m...

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Published in:Plant, cell and environment cell and environment, 2023-11, Vol.46 (11), p.3628-3643
Main Authors: Zhang, Zhen, Sun, Wan, Wen, Liangyun, Liu, Yaqun, Guo, Xiaolei, Liu, Ying, Yao, Chunsheng, Xue, Qingwu, Sun, Zhencai, Wang, Zhimin, Zhang, Yinghua
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cited_by cdi_FETCH-LOGICAL-c313t-c115ce113d9e2ccfdc55cd727944483117cb3f9456ee2ea2d1516854eef1c3
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container_end_page 3643
container_issue 11
container_start_page 3628
container_title Plant, cell and environment
container_volume 46
creator Zhang, Zhen
Sun, Wan
Wen, Liangyun
Liu, Yaqun
Guo, Xiaolei
Liu, Ying
Yao, Chunsheng
Xue, Qingwu
Sun, Zhencai
Wang, Zhimin
Zhang, Yinghua
description The developmental process of spike is critical for spike fertility through affecting floret primordia fate in wheat; however, the genetic regulation of this dynamic and complex developmental process remains unclear. Here, we conducted a high temporal-resolution analysis of spike transcriptomes and monitored the number and morphology of floret primordia within spike. The development of all floret primordia in a spike was clearly separated into three distinct phases: differentiation, pre-dimorphism and dimorphism. Notably, we identified that floret primordia with meiosis ability at the pre-dimorphism phase usually develop into fertile floret primordia in the next dimorphism phase. Compared to control, increasing plant space treatment achieved the maximum increasement range (i.e., 50%) in number of fertile florets by accelerating spike development. The process of spike fertility improvement was directed by a continuous and dynamic regulatory network involved in transcription factor and genes interaction. This was based on the coordination of genes related to heat shock protein and jasmonic acid biosynthesis during differentiation phase, and genes related to lignin, anthocyanin and chlorophyll biosynthesis during dimorphism phase. The multi-dimensional association with high temporal-resolution approach reported here allows rapid identification of genetic resource for future breeding studies to realise the maximum spike fertility potential in more cereal crops.
doi_str_mv 10.1111/pce.14672
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subjects Anthocyanins
Biosynthesis
Cereal crops
Chlorophyll
Differentiation
Dimorphism
Fertility
Genes
Genetic resources
Heat shock proteins
Jasmonic acid
Meiosis
Primordia
Protein biosynthesis
Transcriptomes
Wheat
title Dynamic gene regulatory networks improving spike fertility through regulation of floret primordia fate in wheat
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