文献类型： 外文期刊

作者： Wang, Jia ¹ ; Chen, Zhitong ² ; Jin, Surong ³ ; Hu, Zhongli ¹ ; Huang, Yibing ² ; Diao, Ying ¹ ;

作者机构： 1.Wuhan Univ, Coll Life Sci, State Key Lab Hybrid Rice, Wuhan 430072, Hubei, Peoples R China

2.Fujian Acad Agr Sci, Agr Ecol Inst, Fuzhou 350013, Fujian, Peoples R China

3.Wuhan Univ Technol, Wuhan 430070, Hubei, Peoples R China

关键词： Napier Grass;Transcriptome;De novo assembly;EST-SSRs;Genetic diversity

期刊名称：GENES & GENOMICS （ 影响因子：1.839； 五年影响因子：1.329 ）

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收录情况： SCI

摘要： Napier grass (Pennisetum purpureum Schum.) is an economically important species used as a fodder crop, reflecting its high biomass, perennial nature and pest resistance. In order to understand the genomic information and development of this species based on SSR markers, the transcriptome for Napier grass was obtained using next-generation sequencing. A total of 117,076 sequence contigs were obtained, with lengths of 201-10,652 bp. Among these contigs, 44,313 (37.85%) sequences were annotated against public protein databases (E-value < 10(-5)). In addition, the contigs generated from the transcript sequencing were also analysed for the presence of simple sequence repeats (SSRs). A total of 12,744 SSR motifs were identified with in these contigs and corresponding primer pairs were designed. Empirical validation of a cohort of 200 SSRs was performed, with 34% being polymorphic for 20 Napier grass accessions. The polymorphic index content values for each primer ranged from 0.105 to 0.749, with an average of 0.409. The development of genetic, genomic resources and EST-SSRs for Napier grass will contribute to novel gene discovery and the marker-assisted selective breeding of this species.