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Int. J. Mol. Sci. 2015, 16(1), 521-534; doi:10.3390/ijms16010521

Transcriptome-Wide Analysis of SAMe Superfamily to Novelty Phosphoethanolamine N-Methyltransferase Copy in Lonicera japonica

1
State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, Academy of Chinese Medical Sciences, Beijing 100700, China
2
School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
3
CAS Key Laboratory of Genome Sciences and Information, Beijing 100029, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Izuho Hatada
Received: 19 August 2014 / Accepted: 24 November 2014 / Published: 29 December 2014
(This article belongs to the Section Biochemistry, Molecular and Cellular Biology)
View Full-Text   |   Download PDF [681 KB, uploaded 29 December 2014]

Abstract

The S-adenosyl-l-methionine-dependent methyltransferase superfamily plays important roles in plant development. The buds of Lonicera japonica are used as Chinese medical material and foods; chinese people began domesticating L. japonica thousands of years ago. Compared to the wild species, L. japonica var. chinensis, L. japonica gives a higher yield of buds, a fact closely related to positive selection over the long cultivation period of the species. Genome duplications, which are always detected in the domestic species, are the source of the multifaceted roles of the functional gene. In this paper, we investigated the evolution of the SAMe genes in L. japonica and L. japonica var. chinensis and further analyzed the roles of the duplicated genes among special groups. The SAMe protein sequences were subdivided into three clusters and several subgroups. The difference in transcriptional levels of the duplicated genes showed that seven SAMe genes could be related to the differences between the wild and the domesticated varieties. The sequence diversity of seven SAMe genes was also analyzed, and the results showed that different gene expression levels between the varieties could not be related to amino acid variation. The transcriptional level of duplicated PEAMT could be regulated through the SAM–SAH cycle. View Full-Text
Keywords: phosphoethanolamine N-methyltransferase; duplicated gene; Lonicera japonica; domestication; bud yield phosphoethanolamine N-methyltransferase; duplicated gene; Lonicera japonica; domestication; bud yield
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yuan, Y.; Qi, L.; Yu, J.; Wang, X.; Huang, L. Transcriptome-Wide Analysis of SAMe Superfamily to Novelty Phosphoethanolamine N-Methyltransferase Copy in Lonicera japonica. Int. J. Mol. Sci. 2015, 16, 521-534.

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