Biotechnology Bulletin ›› 2018, Vol. 34 ›› Issue (4): 102-106.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0686

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Comparing the Methods of Isolating Genomic DNA and Construction of Its Small Genomic Library of Ustilaginoidea virens

FU Rong-tao1, WANG Jian1, CHEN Cheng1, GONG Xue-shu1, LU Dai-hua1, LUO Xi1, ZHENG Ai-ping2   

  1. 1. Key Laboratory of Integrated Pest Management on Crops in Southwest,Ministry of Agriculture Science,Institute of Plant Protection,Sichuan Academy of Agriculture Science,Chengdu 610066;
    2. Rice Research Institute,Sichuan Agricultural University,Chengdu 611130
  • Received:2017-08-21 Online:2018-04-20 Published:2018-05-04

Abstract: Rice false smut caused by Ustilaginoidea virens is one of important fungal diseases for rice. This experiment aimed to select an optimal method of isolating genomic DNA,and to construct small genomic library of U. virens. The genomic DNA of U. virens was extracted by 3 methods of CTAB,SDS,and fungal DNA isolation kit. The DNA sample was sequenced using Illumina system,and small genomic library was constructed. The results showed that the high-quality genomic DNA was obtained by CTAB. Meanwhile,the small genomic library of U. virens was contained 29 350 268 bases and 17 904 Scaffold,and the GC content was 49.79% of total bases. We found that CTAB was the best method of isolating genomic DNA of U. virens. The successful construction of the small genomic library provided data resource for filling the genome gap and identifying pathogenetic gene.

Key words: Ustilaginoidea virens, CTAB, SDS, small genomic library