TCP transcription factor, BRANCH ANGLE DEFECTIVE 1 (BAD1), is required for normal tassel branch angle formation in maize

Proceedings of the National Academy of Sciences of the United States of America
Fang BaiRobert J Schmidt

Abstract

In grass inflorescences, a structure called the "pulvinus" is found between the inflorescence main stem and lateral branches. The size of the pulvinus affects the angle of the lateral branches that emerge from the main axis and therefore has a large impact on inflorescence architecture. Through EMS mutagenesis we have identified three complementation groups of recessive mutants in maize having defects in pulvinus formation. All mutants showed extremely acute tassel branch angles accompanied by a significant reduction in the size of the pulvinus compared with normal plants. Two of the complementation groups correspond to mutations in the previously identified genes, RAMOSA2 (RA2) and LIGULELESS1 (LG1). Mutants corresponding to a third group were cloned using mapped-based approaches and found to encode a new member of the plant-specific TCP (TEOSINTE BRANCHED1/CYCLOIDEA/PROLIFERATING CELL NUCLEAR ANTIGEN FACTOR) family of DNA-binding proteins, BRANCH ANGLE DEFECTIVE 1 (BAD1). BAD1 is expressed in the developing pulvinus as well as in other developing tissues, including the tassels and juvenile leaves. Both molecular and genetics studies show that RA2 is upstream of BAD1, whereas LG1 may function in a separate pathway. Our finding...Continue Reading

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Citations

Jul 26, 2013·Nature Communications·Zuofeng ZhuChuanqing Sun
Jan 12, 2016·Current Opinion in Plant Biology·Michael W Lewis, Sarah Hake
Jul 23, 2016·Frontiers in Plant Science·Zigmunds Orlovskis, Saskia A Hogenhout
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Jul 12, 2018·Journal of Experimental Botany·Hongbin WeiHaiyang Wang
Mar 29, 2020·G3 : Genes - Genomes - Genetics·Marcus O OlatoyeGeoffrey P Morris
Jun 24, 2020·Biochemical Society Transactions·Francesca CaselliVeronica Gregis
Jul 8, 2020·Genome Biology·Rajiv K ParvathaneniAndrea L Eveland
Apr 20, 2017·Frontiers in Plant Science·Namrata DhakaRita Sharma
Mar 1, 2017·Proceedings of the National Academy of Sciences of the United States of America·Christine M GaultA Mark Settles
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Jul 22, 2016·Genetics·Fang BaiA Mark Settles
May 10, 2017·The Plant Journal : for Cell and Molecular Biology·Venkatasubbu ThirulogachandarMarkus Kuhlmann
Sep 12, 2020·Journal of Experimental Botany·Yi ShangChengdao Li
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Dec 6, 2021·Plant Physiology·Hailong YangBeth E Thompson
Mar 8, 2022·Plant Reproduction·Tatiana de Souza MoraesG Wilma van Esse

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