Long-read sequencing reveals genomic structural variations that underlie creation of quality protein maize
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Author
Li, ChangshengXiang, Xiaoli
Huang, Yongcai
Zhou, Yong
An, Dong
Dong, Jiaqiang
Zhao, Chenxi
Liu, Hongjun
Li, Yubin
Wang, Qiong
Du, Chunguang
Messing, Joachim
Larkins, Brian A
Wu, Yongrui
Wang, Wenqin
Affiliation
Univ Arizona, Sch Plant SciIssue Date
2020-01-07
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NATURE PUBLISHING GROUPCitation
Li, C., Xiang, X., Huang, Y. et al. Long-read sequencing reveals genomic structural variations that underlie creation of quality protein maize. Nat Commun 11, 17 (2020). https://doi.org/10.1038/s41467-019-14023-2Journal
NATURE COMMUNICATIONSRights
Copyright © The Author(s) 2020. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Mutation of o2 doubles maize endosperm lysine content, but it causes an inferior kernel phenotype. Developing quality protein maize (QPM) by introgressing o2 modifiers (Mo2s) into the o2 mutant benefits millions of people in developing countries where maize is a primary protein source. Here, we report genome sequence and annotation of a South African QPM line K0326Y, which is assembled from single-molecule, real-time shotgun sequencing reads collinear with an optical map. We achieve a N50 contig length of 7.7 million bases (Mb) directly from long-read assembly, compared to those of 1.04 Mb for B73 and 1.48 Mb for Mo17. To characterize Mo2s, we map QTLs to chromosomes 1, 6, 7, and 9 using an F2 population derived from crossing K0326Y and W64Ao2. RNA-seq analysis of QPM and o2 endosperms reveals a group of differentially expressed genes that coincide with Mo2 QTLs, suggesting a potential role in vitreous endosperm formation.Note
Open access journalISSN
2041-1723PubMed ID
31911615Version
Final published versionae974a485f413a2113503eed53cd6c53
10.1038/s41467-019-14023-2
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Except where otherwise noted, this item's license is described as Copyright © The Author(s) 2020. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/.
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