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Transcriptome Profile Analysis of Cadmium Tolerance in Chinese Flowering Cabbage
Jiewei Wang,Huiyuan Li,Dandan Zou,Jinfeng Zhao,Lianxue Fan,Tao Wu 한국원예학회 2017 Horticulture, Environment, and Biotechnology Vol.58 No.1
Chinese flowering cabbage (Brassica parachinensis L.) is an important leafy vegetable crop that can accumulatehigh levels of cadmium (Cd) and can thus be easily contaminated by this heavy metal. In this study, we performedgenome-wide transcriptional profiling of Cd tolerance in Cd-tolerant cultivar ‘LB70’ using Solexa sequencing to identifygenes and pathways involved in Cd tolerance in Chinese flowering cabbage. Profiling analysis revealed numerous changesin gene expression in response to Cd treatment, including 1669 genes that were downregulated and 1404 genes that wereupregulated. Gene ontology analysis showed that these differentially expressed genes were mainly involved in binding,catalytic processes, metabolism, cellular processes, single-organism processes, biological regulation, localization, andstimulus responses. Several known important Cd tolerance-related genes, such as HMA3, HMA4, and Nramp1, werealso identified. Pathway analysis suggested that two potential novel pathways, namely, the viral carcinogenesis andParkinson’s disease pathways, might be involved in Cd tolerance in Chinese flowering cabbage. The genes andpathways identified in this study provide an important basis for future studies on the molecular mechanism of Cdtolerance in Chinese flowering cabbage.