Integrated Analysis of Transcriptome and Metabolome Reveals New Insights into the Formation of Purple Leaf Veins and Leaf Edge Cracks in Brassica juncea
文献类型： 外文期刊
作者： Zhang, Kaijing 1 ; Yang, Dekun 1 ; Hu, Yuchao 1 ; Njogu, Martin Kagiki 2 ; Qian, Jingjing 1 ; Jia, Li 3 ; Yan, Congsheng 3 ; Li, Ziang 4 ; Wang, Xing 4 ; Wang, Liping 4 ;
作者机构： 1.Anhui Sci & Technol Univ, Coll Agr, Chuzhou 233100, Peoples R China
2.Chuka Univ, Dept Plant Sci, POB 109-60400, Chuka, Kenya
3.Anhui Acad Agr Sci, Inst Hort, Key Lab Genet Improvement & Ecophysiol Hort Crop, Hefei 230001, Peoples R China
4.Hebei Univ Engn, Sch Landscape & Ecol Engn, Handan 056038, Peoples R China
关键词： Brassica juncea; purple leaf vein; leaf edge cracks; multiomics; regulation pathway
期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2022 年 11 卷 17 期
页码：
收录情况： SCI
摘要： Purple leaf veins and leaf edge cracks comprise the typical leaf phenotype of Brassica juncea; however, the molecular mechanisms and metabolic pathways of the formation of purple leaf veins and leaf edge cracks remain unclear. In this study, transcriptome and metabolome analyses were conducted to explore the regulation pathway of purple leaf vein and leaf edge crack formation based on four mustard samples that showed different leaf colors and degrees of cracking. The results showed genes with higher expression in purple leaf veins were mainly enriched in the flavonoid biosynthesis pathway. Integrating related genes and metabolites showed that the highly expressed genes of ANS (BjuA004031, BjuB014115, BjuB044852, and BjuO009605) and the excessive accumulation of dihydrokaempferol and dihydroquercetin contributed to the purple leaf veins by activating the synthetic pathways of pelargonidin-based anthocyanins and delphinidin-based anthocyanins. Meanwhile, "alpha-farnesene synthase activity" and "glucan endo-1, 3-beta-D-glucosidase activity" related to the adversity were mainly enriched in the serrated and lobed leaves, indicating that the environmental pressure was the dominant factor controlling the change in leaf shape. Overall, these results provided new insights into the regulation pathways for formation of purple leaf veins and leaf edge cracks, which could better accelerate the theoretical research on purple leaf vein color and leaf edge cracks in mustard.
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