Integration of transcriptome and metabolome analyses reveals sorghum roots responding to cadmium stress through regulation of the flavonoid biosynthesis pathway
文献类型： 外文期刊
作者： Jiao, Zhiyin 1 ; Shi, Yannan 1 ; Wang, Jinping 1 ; Wang, Zhifang 1 ; Zhang, Xing 1 ; Jia, Xinyue 1 ; Du, Qi 1 ; Niu, Jingtian 1 ; Liu, Bocheng 1 ; Du, Ruiheng 1 ; Ji, Guisu 1 ; Cao, Junfeng 2 ; Lv, Peng 1 ;
作者机构： 1.Hebei Acad Agr & Forestry Sci, Minist Agr & Rural Affairs, Inst Millet Crops, Hebei Branch,Natl Sorghum Improvement Ctr,Key Lab, Shijiazhuang, Peoples R China
2.Shanghai Jiao Tong Univ, Plant Biotechnol Res Ctr, Fudan SJTU Nottingham Plant Biotechnol R&D Ctr, Sch Agr & Biol,Key Lab Urban Agr South,Minist Agr, Shanghai, Peoples R China
关键词： cadmium stress; sorghum bicolor; physiological; transcriptome; metabolome; flavonoid biosynthesis
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）
ISSN： 1664-462X
年卷期： 2023 年 14 卷
页码：
收录情况： SCI
摘要： Cadmium (Cd) pollution is a serious threat to plant growth and human health. Although the mechanisms controlling the Cd response have been elucidated in other species, they remain unknown in Sorghum (Sorghum bicolor (L.) Moench), an important C-4 cereal crop. Here, one-week-old sorghum seedlings were exposed to different concentrations (0, 10, 20, 50, 100, and 150 mu M) of CdCl2 and the effects of these different concentrations on morphological responses were evaluated. Cd stress significantly decreased the activities of the enzymes peroxidase (POD), superoxide dismutase (SOD), glutathione S-transferase (GST) and catalase (CAT), and increased malondialdehyde (MDA) levels, leading to inhibition of plant height, decreases in lateral root density and plant biomass production. Based on these results, 10 mu M Cd concentration was chosen for further transcription and metabolic analyses. A total of 2683 genes and 160 metabolites were found to have significant differential abundances between the control and Cd-treated groups. Multi-omics integrative analysis revealed that the flavonoid biosynthesis pathway plays a critical role in regulating Cd stress responses in sorghum. These results provide new insights into the mechanism underlying the response of sorghum to Cd.
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