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Integrated Transcriptome and Lipidome to Analyze the Characteristics of Oil Accumulation in Seeds of Acer truncatum 认领 引用
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作者 Shengqun Chen Lianwen Shen +2 位作者 Shuang Qu Xia Jiang Gang Wang 《Phyton-International Journal of Experimental Botany》 SCIE 2026年第4期94-110,共17页
Acer truncatum is a significant woody oil-bearing tree species known for its ability to synthesize various unsaturated fatty acids.This study systematically analyzes the lipid metabolic pathways and the associated tra... Acer truncatum is a significant woody oil-bearing tree species known for its ability to synthesize various unsaturated fatty acids.This study systematically analyzes the lipid metabolic pathways and the associated transcript abundance changes involved in the biosynthesis and accumulation of seed oil in A.truncatum.By integrating lipidomics and transcriptomics analyses across different developmental stages of A.truncatum seeds,we thoroughly investigate the dynamic characteristics of oil metabolism.The results show that triacylglycerols(TAGs)become the dominating lipid class throughout seed development and that their amount increases greatly as the seeds mature,whereas diacylglycerols(DAGs)show a significantly decreased relative abundance.Numerous differentially expressed genes(DEGs)linked to lipid biosynthesis were identified by transcriptome analysis,including AcACCase,AcKAS,AcKCS,AcGPAT,AcDGAT,and AcOLE.The expression patterns of DGAT-and KCS-encoding genes differ noticeably between immature and mature seeds.Integrated lipidomics and transcriptomics analyses suggest stage-associated lipid metabolic changes during seed development of A.truncatum.This study also highlights candidate genes and metabolic pathways with TAG accumulation.These findings improve our understanding of seed oil metabolism in A.truncatum by linking AcDGAT-related TAG assembly and AcKCS-driven very-long-chain fatty acid elongation to the developmental regulation of the Kennedy pathway(TAG biosynthesis)and fatty acid elongation(VLCFA/NA-related),providing essential molecular insights for the genetic improvement of oil yield and fatty acid quality in this species. 展开更多
关键词 Acer truncatum triacylglycerols diacylglycerols DGAT KCS
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Metabolomic Analysis of the Anthocyanins Associated with Different Colors of Cymbidium goeringii in Guizhou, China 认领 引用 被引量：3
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作者 Dongbo Wu Shuang Qu +5 位作者 Lianwen Shen Shengqun Chen Xia Jiang Ai Rao Yuxue Zhao Yueyun Wang 《Phyton-International Journal of Experimental Botany》 SCIE 2024年第7期1455-1466,共12页
Cymbidium goeringii is an economically important ornamental plant,and flower color is one of the main features of C.goeringii that contributes to its high economic value.To clarify the molecular mechanisms underlying ... Cymbidium goeringii is an economically important ornamental plant,and flower color is one of the main features of C.goeringii that contributes to its high economic value.To clarify the molecular mechanisms underlying the role of anthocyanins in mediating differences in color among varieties,liquid chromatography–tandem mass spectrometry was used to perform anthocyanin-targeted metabolomics of seven C.goeringii varieties,including‘Jin Qian Yuan’(JQY),‘Jin Xiu Qian Yuan’(JXQY),‘Miao Jiang Su Die’(MJSD),‘Qian Ming Su’(QMS),‘Shi Chan’(SC),and‘Yang Ming Su’(YMS),as well as the C.goeringii.We detected 64 anthocyanins,including cyanidins,delphinidins,malvidins,pelargonidins,peonidins,petunidins,procyanidins,and flavonoids.We identified six shared differentially accumulated metabolites(DAMs),including cyanidin-3-O-rutinoside,delphinidin-3-Osophoroside,pelargonidin-3-O-rutinoside,peonidin-3-O-(6-O-malonyl-beta-D-glucoside),peonidin-3-Osophoroside,and chalcone.Most DAMs were enriched in the anthocyanin biosynthesis pathway.Kyoto Encyclopedia of Genes and Genomes pathway analysis revealed that the differentially expressed metabolites were significantly enriched in the anthocyanin biosynthesis pathway.Analysis of the content of differentially expressed metabolites indicated that peonidin-3-O-(6-O-malonyl-beta-D-glucoside)was the key metabolite underlying color differences among C.goeringii varieties.Procyanidin B2,pelargonidin-3-O-galactoside,and naringenin might also affect the color formation of JQY and QMS,SC,and MJSD,respectively.The results of this study shed light on the metabolic mechanism underlying flower color differences in C.goeringii at the molecular level.Our findings will aid future studies of the mechanism of flower color regulation in C.goeringii and have implications for the breeding of new varieties. 展开更多
关键词 Cymbidium goeringii flower color anthocyanins metabolomics
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