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Genomic Analysis of the ASMT Gene Family in Solanum lycopersicum

文献类型： 外文期刊

作者： Liu, Weicheng 1 ; Zhao, Dake 2 ; Zheng, Chunfang 1 ; Chen, Chen 1 ; Peng, Xin 1 ; Cheng, Yuan 3 ; Wan, Hongjian 3 ;

作者机构： 1.Zhejiang Mariculture Res Inst, Zhengjiang Key Lab Exploitat & Preservat Coastal, Wenzhou 325000, Peoples R China

2.Lab Ecol & Evolutionary Biol, State Key Lab Conservat & Utilizat Bio Resources, Kunming 650091, Yunnan, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Vegetables, Statekey Lab Breeding Base Zhejiang Sustainable P, Hangzhou 310021, Zhejiang, Peoples R China

关键词： Acetylserotonin methyltransferase (ASMT);identification and expression;biotic stresses;Solanum lycopersicum;melatonin biosynthesis

期刊名称：MOLECULES （ 影响因子：4.411； 五年影响因子：4.587 ）

ISSN： 1420-3049

年卷期： 2017 年 22 卷 11 期

页码：

收录情况： SCI

摘要： Acetylserotonin methyltransferase (ASMT) is the last enzyme of melatonin biosynthesis and may play a rate-limiting role in the melatonin production of plants. In this study, systematic analysis of the ASMT gene family in tomato (Solanum lycopersicum Mill) has been presented by the integration of the structural features, phylogenetic relationships, exon/intron configuration, and expression profile during growth and development, as well as biotic stresses. The results revealed that the tomato genome encoded a minimum of 14 members, containing three probable encoded pseudogenes. Chromosome mapping indicated that the family had probably expanded via tandem duplication events. Genome-wide RNA-seq and qRT-PCR based gene expression analysis revealed that almost half of the SlASMT genes were expressed in at least one of the experimental stages studied and also showed differential accumulation. Furthermore, the tandem duplicated SlASMT genes showed differential expression levels, which indicated probable functional divergence during the course of the evolution. Finally, this study also determined that some SlASMT genes were induced by multiple pathogens. The results suggested that these genes could be involved in tomato plant response to biotic stresses.

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