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  Genetic architecture of seed glycerolipids in Asian cultivated rice

Hong, J., Rosental, L., Xu, Y., Xu, D., Orf, I., Wang, W., et al. (2022). Genetic architecture of seed glycerolipids in Asian cultivated rice. Plant, Cell and Environment. doi:10.1111/pce.14378.

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Genre: Journal Article
Alternative Title : Plant, Cell & Environment

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 Creators:
Hong, Jun1, Author
Rosental, Leah1, Author
Xu, Yang1, Author
Xu, Dawei1, Author
Orf, Isabel1, Author
Wang, Wengsheng1, Author
Hu, Zhiqiang1, Author
Su, Su1, Author
Bai, Shaoxing1, Author
Ashraf, Mohammed1, Author
Hu, Chaoyang1, Author
Zhang, Changquan1, Author
Li, Zhikang1, Author
Xu, Jianlong1, Author
Liu, Qiaoquan1, Author
Zhang, Hui1, Author
Zhang, Fengli1, Author
Luo, Zhijing1, Author
Chen, Mingjiao1, Author
Chen, Xiaofei1, Author
Betts, Natalie1, AuthorFernie, A. R.2, Author              Liang, Wanqi1, AuthorChen, Guanqun1, AuthorBrotman, Yariv1, AuthorZhang, Dabing1, AuthorShi, Jianxin1, Author more..
Affiliations:
1external, ou_persistent22              
2Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              

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Free keywords: Lyso-phosphatidylcholine, natural variation, Oryza sativa, saturated triacylglycerol, seed lipidome.
 Abstract: AbstractGlycerolipids are essential for rice development and grain quality but its genetic regulation remains unknown. Here, we report its genetic base using metabolite-based genome-wide association study (mGWAS) and metabolite-based quantitative traits locus (mQTL) analyses based on lipidomic profiles of seeds from 587 Asian cultivated rice accessions and 103 chromosomal segment substitution lines, respectively. We found that two genes encoding phosphatidylcholine:diacylglycerol cholinephosphotransferase (OsLP1) and granule-bound starch synthase I (Waxy) contribute to variations in saturated triacylglycerol (TAG) and lyso-phosphatidylcholine (PC) contents, respectively. We demonstrated that allelic variation in OsLP1 sequence between indica and japonica results in different enzymatic preference for substrate PC-16:0/16:0 and different saturated TAG levels. Further evidences demonstrated that OsLP1 also affects heading date and that co-selection of OsLP1 and a flooding-tolerant QTL in Aus results in the abundance of saturated TAGs associated with flooding tolerance. Moreover, we revealed that the sequence polymorphisms in Waxy has pleiotropic effects on lyso-PC and amylose content. We proposed that rice seed glycerolipids have been unintentionally shaped during natural and artificial selection for adaptive or import seed quality traits. Collectively, our findings provide valuable genetic resources for rice improvement and evolutionary insights into seed glycerolipid variations in rice.This article is protected by copyright. All rights reserved.

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Language(s): eng - English
 Dates: 2022-06-132022-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1111/pce.14378
 Degree: -

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Title: Plant, Cell and Environment
  Other : Plant, Cell & Environment
Source Genre: Journal
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Publ. Info: Oxford, England : Blackwell Science
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 0140-7791
CoNE: https://pure.mpg.de/cone/journals/resource/954925471334