{"title":"Lipidomics Reveals Dynamic Changes of Starch Granule-Associated Lipids during Rice Grain Filling.","authors":"Xinyu Zhang, Zhiqian Wu, Xiaoning Liu, Mengting Ma, Zhongquan Sui, Harold Corke","doi":"10.1021/acs.biomac.5c00805","DOIUrl":null,"url":null,"abstract":"<p><p>This study explored dynamic changes in starch granule-associated lipids (SGALs) during rice grain filling, including granule surface lipids (GSLs) and internal lipids (GILs). SGAL content increased from 0.335% at 6 days after anthesis (DAA) to 0.684% at DAA 46. Lipidomics identified 423 lipids in GSLs and 148 lipids in GILs, with triglycerides being the most abundant. In GSLs, 23 lipids, including phosphatidic acid (5:0_16:0), monoacylglycerol (18:1), and lysophosphatidylglycerol (14:0), were upregulated from DAA 6 to 22. The GSLs showing changes during grain filling may be related to amyloplast membrane metabolism. For GILs, 7 lipids were upregulated from DAA 6 to 22, with only acyl carnitine (25:8) upregulated between DAA 22 and 46. Triglycerides (11:0_8:0_10:0) and (P-10:0_16:2) increased first and then decreased, suggesting changes in intracellular lipid dynamics related to carbon partitioning. This study detailed changes in SGALs during rice grain filling, revealing their potential roles in starch biosynthesis.</p>","PeriodicalId":30,"journal":{"name":"Biomacromolecules","volume":" ","pages":""},"PeriodicalIF":5.5000,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biomacromolecules","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acs.biomac.5c00805","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
This study explored dynamic changes in starch granule-associated lipids (SGALs) during rice grain filling, including granule surface lipids (GSLs) and internal lipids (GILs). SGAL content increased from 0.335% at 6 days after anthesis (DAA) to 0.684% at DAA 46. Lipidomics identified 423 lipids in GSLs and 148 lipids in GILs, with triglycerides being the most abundant. In GSLs, 23 lipids, including phosphatidic acid (5:0_16:0), monoacylglycerol (18:1), and lysophosphatidylglycerol (14:0), were upregulated from DAA 6 to 22. The GSLs showing changes during grain filling may be related to amyloplast membrane metabolism. For GILs, 7 lipids were upregulated from DAA 6 to 22, with only acyl carnitine (25:8) upregulated between DAA 22 and 46. Triglycerides (11:0_8:0_10:0) and (P-10:0_16:2) increased first and then decreased, suggesting changes in intracellular lipid dynamics related to carbon partitioning. This study detailed changes in SGALs during rice grain filling, revealing their potential roles in starch biosynthesis.
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Biomacromolecules is a leading forum for the dissemination of cutting-edge research at the interface of polymer science and biology. Submissions to Biomacromolecules should contain strong elements of innovation in terms of macromolecular design, synthesis and characterization, or in the application of polymer materials to biology and medicine.
Topics covered by Biomacromolecules include, but are not exclusively limited to: sustainable polymers, polymers based on natural and renewable resources, degradable polymers, polymer conjugates, polymeric drugs, polymers in biocatalysis, biomacromolecular assembly, biomimetic polymers, polymer-biomineral hybrids, biomimetic-polymer processing, polymer recycling, bioactive polymer surfaces, original polymer design for biomedical applications such as immunotherapy, drug delivery, gene delivery, antimicrobial applications, diagnostic imaging and biosensing, polymers in tissue engineering and regenerative medicine, polymeric scaffolds and hydrogels for cell culture and delivery.
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