Identification of microRNAs in two species of tomato, Solanum lycopersicum and Solanum habrochaites, by deep sequencing

Journal of Integrative Agriculture

Yan-mei GUO¹  Qian-nan LI¹  Xiao-xuan WANG²  Jian-chang GAO³  Guang-jun GUO⁴  Shan-shan FAN⁴  John C. Snyder⁴  Yong-chen DU⁴ 

[1] Correspondence: DU Yong-chen, Fax: [phone];Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China;Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, P.R. China;Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China;

关键词: microRNAs;    Solanum lycopersicum;    Solanum habrochaites;    deep sequencing;   

DOI  :  

来源: DOAJ

【 摘 要 】

MicroRNAs (miRNAs) are ~21 nucleotide (nt), endogenous RNAs that regulate gene expression in plants. Increasing evidence suggests that miRNAs play an important role in species-specific development in plants. However, the detailed miRNA profile divergence has not been performed among tomato species. In this study, the small RNA (sRNA) profiles of Solanum lycopersicum cultivar 9706 and Solanum habrochaites species PI 134417 were obtained by deep sequencing. Sixty-three known miRNA families were identified from these two species, of which 39 were common. Further miRNA profile comparison showed that 24 known non-conserved miRNA families were species-specific between these two tomato species. In addition, six conserved miRNA families displayed an apparent divergent expression pattern between the two tomato species. Our results suggested that species-specific, non-conserved miRNAs and divergent expression of conserved miRNAs might contribute to developmental changes and phenotypic variation between the two tomato species. Twenty new miRNAs were also identified in S. lycopersicum. This research significantly increases the number of known miRNA families in tomato and provides the first set of small RNAs in S. habrochaites. It also suggests that miRNAs have an important role in species-specific plant developmental regulation.

【 授权许可】

Unknown