Physiological and transcriptomic analyses of mulberry (Morus atropurpurea) response to cadmium stress
文献类型: 外文期刊
作者: Dai, Fanwei 1 ; Luo, Guoqing 1 ; Li, Zhiyi 1 ; Wei, Xu 3 ; Wang, Zhenjiang 1 ; Lin, Sen 1 ; Tang, Cuiming 1 ;
作者机构: 1.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangzhou, Peoples R China
2.Minist Agr, Key Lab Urban Agr South China, Guangzhou, Peoples R China
3.Univ Florida, Citrus Res & Educ Ctr, 700 Expt Stn Rd, Lake Alfred, FL 33850 USA
关键词: Cadmium; Mulberry; Detoxification; Transcriptomic; Physiological
期刊名称:ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY ( 影响因子:6.291; 五年影响因子:6.393 )
ISSN: 0147-6513
年卷期: 2020 年 205 卷
页码:
收录情况: SCI
摘要: Mulberry (Monts atropurpurea) is an economically important woody tree and has great potential for the remediation of heavy metals. To investigate how cadmium accumulates and its detoxification in mulberry, we assessed the physiological and transcriptomic effects of cadmium contamination and as well as its chemical forms and subcellular distribution. Cadmium significantly inhibited mulberry plant growth and primarily accumulated in mulberry roots. Antioxidant enzymes were induced by cadmium in all tissues of mulberry. Subcellular fractionation analyses of cadmium indicated that the majority was compartmentalized in soluble fraction in roots while it mainly located in cell wall in leaves and stems. The greatest amount of the cadmium was integrated with proteins and pectates in all mulberry tissues. RNA-seq transcriptomic analyses of mulberry roots revealed that various metabolic pathways involved in cadmium stress response such as RNA regulation, hormone metabolism, and response to stress, secondary metabolism, as well as signaling, protein metabolism, transport, and cell-wall metabolism. These results will increase our understanding of the molecular mechanisms of cadmium detoxification in mulberry and provide new insights into engineering woody plants for phytoremediation.
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