The Kernel Size-Related Quantitative Trait Locus qKW9 Encodes a Pentatricopeptide Repeat Protein That Aaffects Photosynthesis and Grain Filling

Huang, J., Lu, G., Liu, L., Raihan, M. S., Xu, J., Jian, L., Zhao, L., Tran, T. M., Zhang, Q., Liu, J., Li, W., Wei, C., Braun, D. M., Li, Q., Fernie, A. R., Jackson, D., Yan, J. (August 2020) The Kernel Size-Related Quantitative Trait Locus qKW9 Encodes a Pentatricopeptide Repeat Protein That Aaffects Photosynthesis and Grain Filling. Plant Physiol, 183 (4). pp. 1696-1709. ISSN 0032-0889 (Print)0032-0889

URL: https://pubmed.ncbi.nlm.nih.gov/32482908/
DOI: 10.1104/pp.20.00374

Abstract

In maize (Zea mays), kernel weight is an important component of yield that has been selected during domestication. Many genes associated with kernel weight have been identified through mutant analysis. Most are involved in the biogenesis and functional maintenance of organelles or other fundamental cellular activities. However, few quantitative trait loci (QTLs) underlying quantitative variation in kernel weight have been cloned. Here, we characterize a QTL, qKW9, associated with maize kernel weight. This QTL encodes a DYW motif pentatricopeptide repeat protein involved in C-to-U editing of ndhB, a subunit of the chloroplast NADH dehydrogenase-like complex. In a null qkw9 background, C-to-U editing of ndhB was abolished, and photosynthesis was reduced, resulting in less maternal photosynthate available for grain filling. Characterization of qKW9 highlights the importance of optimizing photosynthesis for maize grain yield production.

Item Type: Paper
Additional Information: 1532-2548 Huang, Juan Lu, Gang Liu, Lei Raihan, Mohammad Sharif Xu, Jieting Orcid: 0000-0001-5664-2975 Jian, Liumei Orcid: 0000-0001-6234-9265 Zhao, Lingxiao Tran, Thu M Zhang, Qinghua Orcid: 0000-0003-2291-1836 Liu, Jie Orcid: 0000-0002-1129-9584 Li, Wenqiang Orcid: 0000-0002-1046-7902 Wei, Cunxu Orcid: 0000-0002-2592-3843 Braun, David M Orcid: 0000-0003-4023-8307 Li, Qing Fernie, Alisdair R Orcid: 0000-0001-9000-335x Jackson, David Orcid: 0000-0002-4269-7649 Yan, Jianbing Orcid: 0000-0001-8650-7811 Journal Article Research Support, Non-U.S. Gov't Plant Physiol. 2020 Aug;183(4):1696-1709. doi: 10.1104/pp.20.00374. Epub 2020 Jun 1.
CSHL Authors:
Communities: CSHL labs > Jackson lab
Depositing User: Matthew Dunn
Date: August 2020
Date Deposited: 10 Dec 2020 20:17
Last Modified: 10 Dec 2020 20:17
PMCID: PMC7401109
Related URLs:
URI: https://repository.cshl.edu/id/eprint/39703

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