Biotechnology Bulletin ›› 2015, Vol. 31 ›› Issue (3): 102-107.doi: 10.13560/j.cnki.biotech.bull.1985.2015.04.014

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Cloning and Expression Analysis of a Pollen Development Gene MF21 in Broccoli

Pei Xuli1,2 Jing Zan’ge1 Tang Zheng1 Wang Yan2 Wang Zhen2 Chen Zhongwen2 Luo Tiankuan1 Zhang Xiaoling1   

  1. (1. Zhenan Key Laboratory of Crop Breeding,Wenzhou Vocational College of Science and Technology,Wenzhou 325006;2. State Key Laboratory of Crop Genetics and Germplasm Enhancement,NanjingAgriculturalUniversity,Nanjing 210095)
  • Received:2014-08-06 Online:2015-03-16 Published:2015-03-16

Abstract: In this study, the MF21 gene were cloned from a broccoli maintenance line ‘WN12-95B’. Bioinformatic analysis showed that the full length of MF21 gene was 468 bp and encoded 151 amino acid peptides. The relative molecular weight and pI of MF21 was 16.70 kD and 8.56, respectively. Meanwhile, the MF21 protein was speculated as a hydrophobic protein. The MF21 protein include a 22 amino acid length signal peptide, and also contain two CK2phosphorylation sites, four N-myristoylaton sites and one tyrosine kinase phosphorylation site. Random coils and β-strands were main components of the two-dimension structure. Based on the molecular evolution, we found that the MF21 gene had approximate evolution relationship between broccoli and Brassica carinata. Theexpression analysis of MF21 gene by qRT-PCR indicated that this gene was mainly expressed in bud of broccoli and had tissue specificity. Theexpressive abundance of bud in different development stage had greatdifferences between the Ogu CMS line and its maintenance line.

Key words: broccoli, pollen development, MF21, gene clone, expression analysis