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Transcriptome analysis revealed expression of genes related to anthocyanin biosynthesis in eggplant (Solanum melongena L.) under high-temperature stress

文献类型： 外文期刊

作者： Zhang, Shengmei 1 ; Zhang, Aidong 1 ; Wu, Xuexia 1 ; Zhu, Zongwen 1 ; Yang, Zuofen 1 ; Zhu, Yuelin 2 ; Zha, Dingshi 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Shanghai Key Lab Protected Hort Technol, Hort Res Inst, Shanghai 201403, Peoples R China

2.Nanjing Agr Univ, Coll Hort, Nanjing 210095, Jiangsu, Peoples R China

关键词： Eggplant (Solanum melongena L; ); Anthocyanin biosynthesis; Gene expression; High temperature; Transcriptome; qRT-PCR

期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）

ISSN： 1471-2229

年卷期： 2019 年 19 卷 1 期

页码：

收录情况： SCI

摘要： Background Anthocyanin synthesis is affected by many factors, among which temperature is an important environmental factor. Eggplant is usually exposed to high temperatures during the cultivation season in Shanghai, China. Therefore,RNA -seq analysis was used to determine the effects of high-temperature stress on gene expression in the anthocyanin biosynthetic pathway of eggplant (Solanum melongena L.). Results We tested the heat-resistant cultivar 'Tewangda'. The plants were incubated at 38 degrees C and 45 degrees C, and the suitable temperature for eggplant growth was used as a control. The treatment times were 3 h and 6 h. The skin of the eggplant was taken for transcriptome sequencing, qRT-PCR assays and bioinformatic analysis. The results showed that 770 genes were differentially expressed between different treatments. Gene Ontology (GO) database and Kyoto Encyclopedia of Genes and Genomes (KEGG) database analyses identified 16 genes related to anthocyanin biosynthesis, among which CHSB was upregulated. Other genes, including BHLH62, MYB380, CHI3, CHI, CCOAOMT, AN3, ACT-2, HST, 5MA-T1, CYP75A2, ANT17, RT, PAL2, and anthocyanin 5-aromatic acyltransferase were downregulated. In addition, the Myb family transcription factor PHL11 was upregulated in the CK 3 h vs 45 degrees C 3 h, CK 3 h vs 38 degrees C 3 h, and CK 6 h vs 38 degrees C 6 h comparisons, and the transcription factor bHLH35 was upregulated in the CK 3 h vs 38 degrees C 3 h and CK 6 h vs 38 degrees C 6 h comparisons. Conclusion These results indicated that high temperature will downregulate most of the genes in the anthocyanin biosynthetic pathway of eggplant. Our data have a reference value for the heat resistance mechanism of eggplant and can provide directions for molecular breeding of heat-resistant germplasm with anthocyanin content in eggplant.

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