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Position: Home > Articles > Genome-wide identification and expression analysis of asparagine synthetase family in apple Journal of Integrative Agriculture 2020,19 (5)

Genome-wide identification and expression analysis of asparagine synthetase family in apple

作者：

Yuan Xi-sen;Yu Zi-peng;Liu Lin;Xu Yang;Zhang Lei;Han De-guo;Zhang Shi-zhong

单位：

Northeast Agr Univ, Coll Hort & Landscape Architecture, Harbin 150030, Peoples R China;Shandong Agr Univ, State Key Lab Crop Biol, Tai An 271018, Shandong, Peoples R China;Shandong Acad Agr Sci, Shandong Peanut Res Inst, Qingdao 266100, Peoples R China

关键词：

Malus domestica;bioinformatics;ASN family;asparagine synthetase;nitrogen metabolism

摘要：

Asparagine is an efficient nitrogen transport and storage carrier. Asparagine synthesis occurs by the amination of aspartate which is catalyzed by asparagine synthetase (ASN) in plants. Complete genome-wide analysis and classifications of the ASN gene family have recently been reported in different plants. However, systematic analysis and expression profiles of these genes have not been performed in apple (Malus domestica). Here, a comprehensive bioinformatics approach was applied to identify MdASNs in apple. Then, plant phylogenetic tree, chromosome location, conserved protein motif, gene structure, and expression pattern of MdASNs were analyzed. Five members were identified and distributed on 4 chromosomes with conserved GATase-7 and ASN domains. Expression analysis indicated that all MdASNs mRNA accumulated at the highest level in reproductive organs, namely flowers or fruits, which may be associated with the redistribution of free amino acids in plant metabolic organs and reservoirs. Additionally, most of MdASNs were dramatically up-regulated under various nitrogen supplies, especially in the aboveground part. Taken together, MdASNs may be assigned to be responsible for the nitrogen metabolism and asparagine synthesis in apple.

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Genome-wide identification and expression analysis of asparagine synthetase family in apple

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