Boundary domain genes were recruited to suppress bract growth and promote branching in maize
Boundary domain genes were recruited to suppress bract growth and promote branching in maize
Abstract Grass inflorescence development is diverse and complex and involves sophisticated but poorly understood interactions of genes regulating branch determinacy and leaf growth. Here, we use a combination of transcript profiling, genetic and phylogenetic analyses to investigate tasselsheath1 (tsh1) and tsh4, two maize genes that simultaneously suppress inflorescence leaf growth and inhibit branching. We identify a regulatory network of inflorescence leaf suppression that involves the phase change gene tsh4 upstream of tsh1 and the ligule identity gene liguleless2 (lg2). We also find that a series of duplications in the tsh1 gene lineage facilitated its shift from boundary domain in non-grasses to suppressed inflorescence leaves of grasses. Collectively, these results suggest that the boundary domain genes tsh1 and lg2 were recruited to inflorescence leaves where they suppress growth and regulate a non-autonomous signaling center that promotes inflorescence branching, an important component of yield in cereal grasses.
Dong Zhaobin、Scanlon Michael J.、Patterson Erin、Bertolini Edoardo、Eveland Andrea L.、Guo Jinyan、Xiao Yuguo、Chuck George、Whipple Clinton、Mangrum Sidney、Richardson Annis、Bybee Seth、Bartlett Madelaine
Plant Gene Expression CenterPlant Biology Section, School of Integrative Plant Science, Cornell UniversityBiology Department, University of Massachusetts AmherstDonald Danforth Plant Science CenterDonald Danforth Plant Science CenterDepartment of Biology, Brigham Young UniversityDepartment of Biology, Brigham Young UniversityPlant Gene Expression CenterDepartment of Biology, Brigham Young UniversityDepartment of Biology, Brigham Young UniversityPlant Gene Expression Center||Institute of Molecular Plant Sciences, School of Biological Sciences, University of EdinburghDepartment of Biology, Brigham Young UniversityBiology Department, University of Massachusetts Amherst
农业科学研究植物学遗传学
Dong Zhaobin,Scanlon Michael J.,Patterson Erin,Bertolini Edoardo,Eveland Andrea L.,Guo Jinyan,Xiao Yuguo,Chuck George,Whipple Clinton,Mangrum Sidney,Richardson Annis,Bybee Seth,Bartlett Madelaine.Boundary domain genes were recruited to suppress bract growth and promote branching in maize[EB/OL].(2025-03-28)[2025-07-16].https://www.biorxiv.org/content/10.1101/2021.10.05.463134.点此复制
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