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Open AccessArticle

The Tryptophan Decarboxylase in Solanum lycopersicum

1
Suzhou Polytechnic Institute of Agriculture, Suzhou 215008, China
2
Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
3
College of Horticulture and Gardening, Yangtze University, Jingzhou 434023, China
4
Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-resource, Zhejiang Mariculture Research Institute, Wenzhou 325005, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Molecules 2018, 23(5), 998; https://doi.org/10.3390/molecules23050998
Received: 26 February 2018 / Revised: 17 April 2018 / Accepted: 17 April 2018 / Published: 24 April 2018
Melatonin plays an important role in plant growth, development, and environmental stress. In this study, a systematic analysis of tomato tryptophan decarboxylase (SlTrpDC), which is the first enzyme of melatonin biosynthesis, was conducted by integrating structural features, phylogenetic relationships, an exon/intron feature, and a divergent expression profile. The results determined that the tomato genome encoded five members (SlTrpDC1-SlTrpDC5). The phylogenetic relationships indicated that gene expansion was proposed as the major mode of evolution of the TrpDC genes from the different plant algae species to the higher plants species. The analyses of the exon/intron configurations revealed that the intron loss events occurred during the structural evolution of the TrpDCs in plants. Additionally, the RNA-seq and qRT-PCR analysis revealed that the expression of the SlTrpDC3 was high in all of the tested tissues, while the SlTrpDC4 and SlTrpDC5 were not expressed. The expression patterns of the remaining two (SlTrpDC1 and SlTrpDC2) were tissue-specific, which indicated that these genes may play important roles within the different tissues. No expression difference was observed in the tomato plants in response to the biotic stresses. This study will expand the current knowledge of the roles of the TrpDC genes in tomato growth and development. View Full-Text
Keywords: tryptophan decarboxylase; structural features; expression profiles; phylogenetic relationship tryptophan decarboxylase; structural features; expression profiles; phylogenetic relationship
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Pang, X.; Wei, Y.; Cheng, Y.; Pan, L.; Ye, Q.; Wang, R.; Ruan, M.; Zhou, G.; Yao, Z.; Li, Z.; Yang, Y.; Liu, W.; Wan, H. The Tryptophan Decarboxylase in Solanum lycopersicum. Molecules 2018, 23, 998.

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