Genome-Wide Identification and Expression Analysis of C2H2 Zinc-Finger Protein Transcription Factor Family in Sugar Beet under Cadmium Stress
As an emerging energy crop,sugar beet has potential advantages in the remediation of heavy metal polluted soil.Exploring the response mechanism of sugar beet under cadmium stress is of great significance for breeding new germplasm resistant to heavy metal stress and ecological restoration.Zinc-finger protein transcription factor is a widely existing gene family in plants,which takes part in plant growth and development in various aspects and responds to biological and abiotic stresses.Through genome-wide identification and analysis of physicochemical properties,gene structure,conserved motifs,chromosome location and cis-element,we found that there were 32 members of the C2H2 zinc-finger protein transcription factor family in sugar beet,which could be divided into three subfamilies.Each member had different zinc-finger domains in different numbers,and the gene structure and sequence characteristics of different subfamilies were significantly different.By analyzing the expression of C2H2 zinc-finger protein transcription factors and the regulatory network of differentially expressed genes in sugar beet under cadmium stress,we found that the expression levels of BVRB_6g137660,BVRB_8g189640,BVRB_1g000840 and BVRB_007840 were up-regulated to varying degrees under cadmium stress.Speculating that these transcription factors play a key role in improving the cadmium tolerance of sugar beet.
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