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林业科学 ›› 2013, Vol. 49 ›› Issue (10): 173-180.doi: 10.11707/j.1001-7488.20131027

• 研究简报 • 上一篇    下一篇

杉木与台湾杉EST-SSR标记的开发与应用

张圣, 黄华宏, 林二培, 童再康   

  1. 浙江农林大学 亚热带森林培育国家重点实验室培育基地 临安 311300
  • 收稿日期:2013-01-07 修回日期:2013-05-11 出版日期:2013-10-25 发布日期:2013-11-05
  • 通讯作者: 童再康
  • 基金资助:

    浙江省重点科技创新团队(2009R50035);国家863项目(2011AA100203);浙江省科学技术厅优先主题重点农业项目(2011C12014)。

Development and Application of EST-SSR Markers for Cunninghamia lanceolata and Taiwania cryptomerioides

Zhang Sheng, Huang Huahong, Lin Erpei, Tong Zaikang   

  1. Nurturing Station for the State Key Laboratory of Subtropical Silviculture Zhejiang A&F University Lin'an 311300
  • Received:2013-01-07 Revised:2013-05-11 Online:2013-10-25 Published:2013-11-05

关键词: 杉木, 台湾杉, EST, SSR, 遗传多样性

Abstract:

Cunninghamia lanceolata is one of the most important fast-growing timber tree species in southern China. In order to develop an effective molecular maker, which is important for genetic diversity analysis and marker-assisted selection in C. lanceolata, all the EST sequences of C. lanceolata and Taiwania cryptomerioides were obtained from NCBI for the development of EST-SSR markers.As a result,311 non redundant EST sequences were assembled from 408 EST sequences of C. lanceolata. Among these sequences, a total of 28 SSRs were identified from 26 non redundant EST sequences,and the trinucleotide and tetranucleotide repeats were the dominant types with the frequency of 60.71% and 25%,respectively. A total of 384 non redundant EST sequences were found after assembly of 2 643 EST sequences of T. cryptomerioides and 32 SSRs were identified from 27 non redundant EST sequences.The trinucleotide and tetranucleotide repeats were also the dominant types with the frequency of 53.13% and 25%,respectively.According to these sequences,50 pairs of EST-SSR primers were designed.Through PCR and sequencing,10 pairs of primers with polymorphism were isolated,among which,9 pairs of primers were from C. lanceolata and 1 pair of primers was from T. cryptomerioides.These polymorphic primers were further used to assess the genetic diversity of 30 different clones of C. lanceolata.The results showed that 30 clones were divided into 6 groups at coefficient rate 0.80.All the results indicated that the developed SSR markers from EST sequences would have important application value in genetic analysis and molecular breeding of C. lanceolata.

Key words: Cunninghamia lanceolata, Taiwania cryptomerioides, EST, SSR, genetic diversity

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