Recent research advances in microRNA of fruit crops

micro RNAs(mi RNAs)are a group of endogenous non-coding small RNAs which have func-tions on their target genes through principle of complementary base pair,and playing important roles inregulating the program of growth and development,hormone signaling and stress response. In this paper,the biological functions of mi RNAs in fruit crops were summarized and the conserved difference of mi R-NAs was analyzed between fruit crop and model plant. The studying methods on mi RNAs including theisolation and identification,the test of expression and the validation of target genes in fruit crops were in-troduced. At the same time,the advances and problems in this domain were discussed.