摘要
木薯是一种重要的能源和淀粉作物。为探索木薯开花相关miRNAs对phasiRNA的调控,揭示此类phasiRNA在开花过程中的功能。本研究利用RNA-seq技术对木薯品种"华南八号"花序和幼叶进行转录组和s RNA测序分析,筛选出11类开花相关的miRNAs及其对应的PHAS位点序列,表达分析发现开花相关miRNA与其对应的PHAS位点基因表达水平存在一定差异。结果表明木薯开花相关miRNAs在对phasiRNA的调控过程中,不但直接影响了开花,还广泛参与了木薯其它生长发育过程。本研究为木薯开花调控机制的后续深入探索提供依据,并有助于解决海南以外主产区木薯无法正常开花结实并进行杂交育种的问题。
Cassava(Manihot esculenta Crantz) is an important energy and starch crop. To explore the regulation of phasiRNA by miRNA related to flowering in cassava, and to reveal the function of these phasiRNA during flowering process. In this study, a strategy using RNA-seq was performed for transcriptome and s RNA sequencing and data analysis with "SC8" inflorescence and young leaf as material, then the 11 flowering-related miRNAs and their corresponding PHAS loci sequences were screened. Expression analysis showed that miRNAs related to flowering and their corresponding PHAS loci genes expressed differentially. This results showed miRNAs related to flowering not only affect the bloom, but also widely participate in other growth and development processes in cassava. This study provided foundation for further research of cassava flowering regulation mechanism, and also contributed to solving the question that cassava could not flower and fruit for crossbreeding in the main production area except for Hainan province.
引文
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