MSD1 regulates pedicellate spikelet fertility in sorghum through the jasmonic acid pathway

Jiao, Y., Lee, Y. K., Gladman, N., Chopra, R., Christensen, S. A., Regulski, M., Burow, G., Hayes, C., Burke, J., Ware, D., Xin, Z. (February 2018) MSD1 regulates pedicellate spikelet fertility in sorghum through the jasmonic acid pathway. Nat Commun, 9 (1). p. 822. ISSN 2041-1723

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URL: https://www.ncbi.nlm.nih.gov/pubmed/29483511

DOI: 10.1038/s41467-018-03238-4

Abstract

Grain number per panicle (GNP) is a major determinant of grain yield in cereals. However, the mechanisms that regulate GNP remain unclear. To address this issue, we isolate a series of sorghum [Sorghum bicolor (L.) Moench] multiseeded (msd) mutants that can double GNP by increasing panicle size and altering floral development so that all spikelets are fertile and set grain. Through bulk segregant analysis by next-generation sequencing, we identify MSD1 as a TCP (Teosinte branched/Cycloidea/PCF) transcription factor. Whole-genome expression profiling reveals that jasmonic acid (JA) biosynthetic enzymes are transiently activated in pedicellate spikelets. Young msd1 panicles have 50% less JA than wild-type (WT) panicles, and application of exogenous JA can rescue the msd1 phenotype. Our results reveal a new mechanism for increasing GNP, with the potential to boost grain yield, and provide insight into the regulation of plant inflorescence architecture and development.

Item Type:	Paper
Subjects:	bioinformatics bioinformatics > genomics and proteomics > genetics & nucleic acid processing bioinformatics > genomics and proteomics Investigative techniques and equipment bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification Investigative techniques and equipment > assays organs, tissues, organelles, cell types and functions > tissues types and functions > inflorescence Investigative techniques and equipment > assays > next generation sequencing organs, tissues, organelles, cell types and functions organism description > plant bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types organs, tissues, organelles, cell types and functions > tissues types and functions > signal transduction organism description > plant > sorghum organs, tissues, organelles, cell types and functions > tissues types and functions bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > transcription factor
CSHL Authors:	Ware, Doreen H. Lee, Young Koung Jiao, Yinping Regulski, Michael R. Gladman, Nicholas
Communities:	CSHL labs > Ware lab
Depositing User:	Matt Covey
Date:	26 February 2018
Date Deposited:	07 Mar 2018 13:34
Last Modified:	20 Feb 2024 21:03
PMCID:	PMC5826930
Related URLs:	Publisher
URI:	https://repository.cshl.edu/id/eprint/36206

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