A Serine/Threonine Protein Kinase Encoding Gene KERNEL NUMBER PER ROW6 Regulates Maize Grain Yield

Jia, H., Li, M., Li, W., Liu, L., Jian, Y., Yang, Z., Shen, X., Ning, Q., Du, Y., Zhao, R., Jackson, D., Yang, X., Zhang, Z. (February 2020) A Serine/Threonine Protein Kinase Encoding Gene KERNEL NUMBER PER ROW6 Regulates Maize Grain Yield. Nature Communications, 11 (988). pp. 1-11. ISSN 2041-1723 (Public Dataset)

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Abstract

Increasing grain yield of maize (Zea mays L.) is required to meet the rapidly expanding demands for maize-derived food, feed, and fuel. Breeders have enhanced grain productivity of maize hybrids by pyramiding desirable characteristics for larger ears. However, loci selected for improving grain productivity remain largely unclear. Here, we show that a serine/threonine protein kinase encoding gene KERNEL NUMBER PER ROW6 (KNR6) determines pistillate floret number and ear length. Overexpression of KNR6 or introgression of alleles lacking the insertions of two transposable elements in the regulatory region of KNR6 can significantly enhance grain yield. Further in vitro evidences indicate that KNR6 can interact with an Arf GTPase-activating protein (AGAP) and its phosphorylation by KNR6 may affect ear length and kernel number. This finding provides knowledge basis to enhance maize hybrids grain yield.

Item Type:	Paper
Subjects:	organism description > plant > maize bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > genes, structure and function > gene expression bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > enzymes > kinase bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein expression
CSHL Authors:	Jackson, David P. Liu, Lei
Communities:	CSHL labs > Jackson lab
Depositing User:	Adrian Gomez
Date:	20 February 2020
Date Deposited:	06 Apr 2020 14:52
Last Modified:	14 Sep 2020 19:24
PMCID:	PMC7033126
Related URLs:	Publisher
Dataset ID:	SRA: PRJNA587806 Nucleotide Accessions: MG582650, MG664870–MG665220
URI:	https://repository.cshl.edu/id/eprint/39228

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