
Changes and distribution of flavonoid metabolites in cotton leaves at different growth stages
Liu Luyao, Cao Qianwen, Ma Xiaoge, Qin Zhaolong, Liu Mengge, Tang Mengqi, Zhong Chaomin, Shang Haihong, Chen Di, Qu Lingbo, Xu Xia
Changes and distribution of flavonoid metabolites in cotton leaves at different growth stages
[Objective] This study aims to investigate the dynamic changes of flavonoids in cotton leaves at different growth and development periods. [Methods] Cotton leaves of sGK156 at seedling stage, flourishing flowering stage, and boll opening stage were used as study materials, and the differential metabolites were analysed and flavonoids abundance was detected by ultra-high-performance liquid chromatography-tandem mass spectrometry. [Results] Differential compounds of cotton leaves at three different periods were mainly enriched in the biosynthesis of flavone and flavonol, and the biosynthesis of flavonoids. Compared with those at the flourishing flowering stage and boll opening stage, kaempferol-3-O-arabinopyranoside and naringenin in cotton leaves were significantly higher at the seedling stage, and the contents of 16 flavonoids such as astragalin, tiliroside, and quercetin in cotton leaves at flourishing flowering stage were significantly higher than those at seedling stage and boll opening stage, and the contents of 5 compounds of epicatechin, kaempferol-3-O-rutinoside, kaempferol-3-O-vicianoside, procyanidin B2, and fraxin were significantly higher at the boll opening stage compared with seedling stage and flourishing flowering stage. [Conclusion] This study further analyses the dynamic changes of flavonoid secondary metabolites in cotton leaves during different growth periods, and discover the dominantly expressed flavonoid metabolites in cotton leaves during different growth periods. It provides a theoretical basis for the further study and utilization of flavonoid metabolites in cotton leaves and the selection and breeding of excellent cotton varieties.
cotton / leaf / flavonoid compounds / metabolomics {{custom_keyword}} /
Fig. 1 OPLS-DA analysis of metabolites in cotton leaves at three growth periodsThe green, blue, and red dots represent samples from seedling stage, flourishing flowering stage, and boll opening stage respectively. A-C: The plots of OPLS-DA analysis for seedling stage and flourishing flowering stage, seedling stage and boll opening stage, flourishing flowering stage and boll opening stage in the ESI+ model, respectively; D-F: The plots of OPLS-DA scores for seedling stage and flourishing flowering stage, seedling stage and boll opening stage, flourishing flowering stage and boll opening stage in the ESI- model, respectively. 图1 3个时期棉花叶片代谢物OPLS-DA分析 绿色、蓝色和红色分别代表苗期、盛花期和吐絮期样品。A-C是正离子模式下苗期与盛花期、苗期与吐絮期、盛花期与吐絮期的OPLS-DA得分图。D-F是负离子模式下苗期与盛花期、苗期与吐絮期、盛花期与吐絮期的OPLS-DA得分图。 |
Fig. 2 Volcanic map of metabolites in cotton leaves at three growth periods in ESI+ modeA: seedling stage and flourishing flowering stage; B: seedling stage and boll opening stage; C: flourishing flowering stage and boll opening stage. Green dots represent down-regulated metabolites, and red dots represent up-regulated metabolites. 图2 ESI+模式下3个时期棉花叶片代谢物火山图 A:苗期-盛花期;B:苗期-吐絮期;C:盛花期与吐絮期。绿色圆点代表下调代谢物,红色圆点代表上调代谢物。 |
Fig. 3 Volcanic map of metabolites in cotton leaves at three growth periods in ESI- modeA: seedling stage and flourishing flowering stage; B: seedling stage and boll opening stage; C: flourishing flowering stage and boll opening stage. Green dots represent down-regulated metabolites, and red dots represent up-regulated metabolites. 图3 ESI-模式下棉花叶片3个时期代谢物火山图 A:苗期-盛花期;B:苗期-吐絮期;C:盛花期与吐絮期。绿色圆点代表下调代谢物,红色圆点代表上调代谢物。 |
Fig. 4 Heatmap of metabolites in all samplesA: ESI+ mode; B: ESI- mode. Red for metabolite up-regulation, and blue for metabolite down-regulation. 图4 全部样本中代谢物聚类热图 A:ESI+模式;B:ESI-模式。红色代表代谢物上调,蓝色代表代谢物下调。 |
Table 1 Information of differential flavonoids metabolites表1 差异类黄酮代谢物信息 |
名称 Name | 分子式 Formula | 保留时间 tR/min | 模式 Mode |
---|---|---|---|
山柰酚-3-O-阿拉伯糖苷 Kaempferol-3-O-alpha-arabinoside | C20H18O10 | 7.56 | ESI+ |
柚皮素 Naringenin | C15H12O5 | 8.30 | ESI+ |
紫云英苷 Astragalin | C21H20O11 | 4.90 | ESI+ |
银椴苷 Tiliroside | C30H26O13 | 8.85 | ESI+ |
异槲皮素 Isoquercitin | C21H20O12 | 6.78 | ESI+ |
槲皮素-3-O-丙二酰基葡萄糖苷 Quercetin-3-O-malonylglucoside | C24H22O15 | 7.07 | ESI+ |
槲皮素 Quercetin | C15H10O7 | 6.88 | ESI+ |
槲皮素-3-O-葡萄糖基-6''-乙酸酯 Quercetin-3-O-glucosyl-6''-acetate | C23H22O13 | 8.28 | ESI- |
樱桃苷 Prunin | C21H22O10 | 9.35 | ESI- |
异鼠李素-3-O-半乳糖苷 Isorhamnetin-3-O-galactoside | C22H22O12 | 9.54 | ESI- |
杨梅素-3-O-半乳糖苷 Myricetin-3-O-galactoside | C21H20O13 | 6.22 | ESI+ |
番石榴苷 Quercetin-3-O-arabinoside | C20H18O11 | 7.25 | ESI+ |
三叶豆苷 Trifolin | C21H20O11 | 4.87 | ESI+ |
桑色素 Morin | C15H10O7 | 6.78 | ESI+ |
金丝桃苷 Hyperoside | C21H20O12 | 6.78 | ESI+ |
矢车菊素-3-O-葡萄糖苷 Kuromanin | C21H20O11 | 7.29 | ESI+ |
山柰酚-7-O-葡萄糖苷 Kaempferol-7-O-glucoside | C21H20O11 | 4.87 | ESI+ |
落新妇苷 Astilbin | C21H22O11 | 6.98 | ESI+ |
表儿茶素 Epicatechin | C15H14O6 | 5.20 | ESI+ |
山柰酚-3-O-芸香糖苷 Kaempferol-3-O-rutinoside | C27H30O15 | 6.98 | ESI+ |
山柰酚-3-O-巢菜糖苷 Kaempferol-3-O-vicianoside | C26H28O15 | 6.87 | ESI+ |
原花青素B2 Procyanidin B2 | C30H26O12 | 4.32 | ESI+ |
秦皮苷 Fraxin | C16H18O10 | 3.86 | ESI+ |
扁蓄苷 Avicularin | C20H18O11 | 7.25 | ESI+ |
花旗松素 Taxifolin | C15H12O7 | 5.50 | ESI+ |
表没食子儿茶素 Epigallocatechin | C15H14O7 | 3.14 | ESI+ |
山柰酚 Kaempferol | C15H10O6 | 7.29 | ESI+ |
芦丁 Rutin | C27H30O16 | 6.61 | ESI+ |
洋槐黄素 Robinetin | C15H10O7 | 6.34 | ESI+ |
Fig. 6 Dominant flavonoid metabolites in cotton leaves at different growth stages*: P < 0.05, **: P < 0.01, *** P < 0.001. ns indicates no significant difference (P ≥ 0.05). 图6 棉花叶片中在不同时期优势表达的类黄酮代谢物 *、**和***分别表示P<0.05、P<0.01、P<0.001。ns表示差异不显著(P≥0.05)。 |
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