Small RNA sequencing reveals various microRNAs involved in piperine biosynthesis in black pepper (Piper nigrum L.)
文献类型： 外文期刊
作者： Ding, Yuanhao 1 ; Mao, Yuyuan 1 ; Cen, Yi 1 ; Hu, Lisong 2 ; Su, Yuefeng 1 ; Ma, Xuemin 1 ; Long, Lu 4 ; Hu, Haiyan 1 ; Hao, 1 ;
作者机构： 1.Hainan Univ, Sch Trop Crops, Hainan Key Lab Sustainable Utilizat Trop Bioresou, Haikou 570228, Hainan, Peoples R China
2.Chinese Acad Trop Agr Sci, Spice & Beverage Res Inst, Wanning 571533, Hainan, Peoples R China
3.Minist Agr, Key Lab Genet Resources Utilizat Spice & Beverage, Wanning 571533, Hainan, Peoples R China
4.Henan Univ, Sch Life Sci, Key Lab Plant Stress Biol, State Key Lab Cotton Biol, Kaifeng 475004, Henan, Peoples R China
5.Hainan Prov Key Lab Genet Improvement & Qual Regu, Wanning 571533, Hainan, Peoples R China
关键词： Black pepper; miRNA; Secondary metabolism; Alkaloids; Piperine biosynthesis
期刊名称：BMC GENOMICS （ 影响因子：3.969； 五年影响因子：4.478 ）
ISSN： 1471-2164
年卷期： 2021 年 22 卷 1 期
页码：
收录情况： SCI
摘要： Background Black pepper (Piper nigrum L.), an important and long-cultivated spice crop, is native to South India and grown in the tropics. Piperine is the main pungent and bioactive alkaloid in the berries of black pepper, but the molecular mechanism for piperine biosynthesis has not been determined. MicroRNAs (miRNAs), which are classical endogenous noncoding small RNAs, play important roles in regulating secondary metabolism in many species, but less is known regarding black pepper or piperine biosynthesis. Results To dissect the functions of miRNAs in secondary metabolism especially in piperine biosynthesis, 110 known miRNAs, 18 novel miRNAs and 1007 individual targets were identified from different tissues of black pepper by small RNA sequencing. qRT-PCR and 5 '-RLM-RACE experiments were conducted to validate the reliability of the sequencing data and predicted targets. We found 3 miRNAs along with their targets including miR166-4CL, miR396-PER and miR397-CCR modules that are involved in piperine biosynthesis. Conclusion MiRNA regulation of secondary metabolism is a common phenomenon in plants. Our study revealed new miRNAs that regulate piperine biosynthesis, which are special alkaloids in the piper genus, and they might be useful for future piperine genetic improvement of black pepper.
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