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Acta Agron Sin ›› 2014, Vol. 40 ›› Issue (07): 1205-1212.doi: 10.3724/SP.J.1006.2014.01205

• CROP GENETICS & BREEDING·GERMPLASM RESOURCES·MOLECULAR GENETICS • Previous Articles     Next Articles

Isolation and Expression of Mulberry (Morus alba L.) EIN2 Gene

LIU Chang-Ying1,LÜ Rui-Hua1,ZHU Pan-Pan1,FAN Wei1,LI Jun1,WANG Xiao-Hong1,LI Zhen-Gang2,WANG Xi-Ling1,ZHAO Ai-Chun1,LU Cheng1,YU Mao-De1,*   

  1. 1 College of Biotechnology, Southwest University / State Key Laboratory of Silkworm Genome Biology, Chongqing 400715, China; 2 Institution of Sericulture and Apiculture, Yunnan Academy of Agricultural Sciences, Yunnan Mengzi 661101, China.
  • Received:2013-11-21 Revised:2014-03-04 Online:2014-07-12 Published:2014-04-09
  • Contact: 余茂德, E-mail: yumd@163.com, Tel: 023-68250191 第一作者联系方式:E-mail: lcyswu@163.com

Abstract:

 EIN2 is a central component of ethylene signaling pathway, transferring the ethylene signal from endoplasmic reticulum to nucleus. A putative EIN2 gene obtained from Morus Genome Database and its expression levels were detected by using RT-PCR. The full-length genomic sequence of MaEIN2 is 5614 bp in length, which consists of seven exons and six introns. The CDS of MaEIN2 is 3921 bp and encodes 1036 amino acids. Phylogenetic tree analysis revealed that MaEIN2 had closer relationships with dicotyledons plants and further with monocotyledons plants. The expression levels of MaEIN2 in old leaf and mature fruit were much higher than these in young leaf and immature fruit. The expression levels of MaEIN2 was increasing gradually in fruit development, indicating MaEIN2 was involved in the ripening and senescence of plant organs. Ethephon, ABA and NaCl were used to incubate the mulberry seeds, showing that ethephon induced the expression of MaEIN2 in seedlings, while ABA and NaCl downregulated the expression of MaEIN2. This work lays a foundation for further understanding of the function of MaEIN2.

Key words: Mulberry, MaEIN2, Expression Analysis, Ethephon, ABA, NaCl

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