A dynamic regulome of shoot-apical-meristem-related homeobox transcription factors modulates plant architecture in maize
文献类型： 外文期刊
作者： Luo, Zi 1 ; Wu, Leiming 2 ; Miao, Xinxin 1 ; Zhang, Shuang 3 ; Wei, Ningning 3 ; Zhao, Shiya 1 ; Shang, Xiaoyang 1 ; Hu, Hongyan 1 ; Xue, Jiquan 3 ; Zhang, Tifu 4 ; Yang, Fang 1 ; Xu, Shutu 3 ; Li, Lin 1 ;
作者机构： 1.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Hubei Hongshan Lab, Wuhan 430070, Peoples R China
2.Anhui Agr Univ, Sch Life Sci, Natl Engn Lab Crop Resistance Breeding, Hefei 230036, Peoples R China
3.Northwest A&F Univ, Key Lab Biol & Genet Improvement Maize Arid Area N, Minist Agr, Yangling 712199, Shaanxi, Peoples R China
4.Jiangsu Acad Agr Sci, Inst Germplasm Resources & Biotechnol, Jiangsu Prov Key Lab Agrobiol, Nanjing 210014, Peoples R China
5.Hubei Hongshan Lab, Wuhan 430070, Peoples R China
6.Huazhong Agr Univ, Shenzhen Inst Nutr & Hlth, Wuhan 430070, Peoples R China
7.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Genome Anal Lab Minist Agr, Shenzhen Branch,Guangdong Lab Lingnan Modern Agr, Shenzhen 518120, Peoples R China
关键词： Homeobox family; Transcription factor; Binding sites; tsCUT&Tag; Plant height; Shoot architecture; Maize
期刊名称：GENOME BIOLOGY （ 影响因子：9.4； 五年影响因子：16.3 ）
ISSN： 1474-760X
年卷期： 2024 年 25 卷 1 期
页码：
收录情况： SCI
摘要： Background: The shoot apical meristem (SAM), from which all above-ground tissues of plants are derived, is critical to plant morphology and development. In maize (Zea mays), loss-of-function mutant studies have identified several SAM-related genes, most encoding homeobox transcription factors (TFs), located upstream of hierarchical networks of hundreds of genes. Results: Here, we collect 46 transcriptome and 16 translatome datasets across 62 different tissues or stages from the maize inbred line B73. We construct a dynamic regulome for 27 members of three SAM-related homeobox subfamilies (KNOX, WOX, and ZF-HD) through machine-learning models for the detection of TF targets across different tissues and stages by combining tsCUT&Tag, ATAC-seq, and expression profiling. This dynamic regulome demonstrates the distinct binding specificity and co-factors for these homeobox subfamilies, indicative of functional divergence between and within them. Furthermore, we assemble a SAM dynamic regulome, illustrating potential functional mechanisms associated with plant architecture. Lastly, we generate a wox13a mutant that provides evidence that WOX13A directly regulates Gn1 expression to modulate plant height, validating the regulome of SAM-related homeobox genes. Conclusions: The SAM-related homeobox transcription-factor regulome presents an unprecedented opportunity to dissect the molecular mechanisms governing SAM maintenance and development, thereby advancing our understanding of maize growth and shoot architecture.
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