Transcript Profiling Reveals Abscisic Acid, Salicylic Acid and Jasmonic-Isoleucine Pathways Involved in High Regenerative Capacities of Immature Embryos Compared with Mature Seeds in japonica Rice
Received date: 2017-12-21
Accepted date: 2018-04-20
Online published: 2018-04-10
Induced pluripotent cell mass plays a role in genetic transformation mediated by Agrobacterium. Mature seeds are more recalcitrant to the induction of suitable calli than immature embryos in rice, but the exact molecular mechanisms involved remain elusive. In this study, the morphological structure of calli induced from mature seeds and immature embryos were observed under a scanning electron microscope using a paraffin embedded technique. Meanwhile, a total of 2 173 up- and down-regulated genes were identified in calli induced from mature seeds and immature embryos by RNA-seq technique and furtherly confirmed by quantitative real-time PCR. The results revealed the remarkable morphological differences in calli induced from mature seeds and immature embryos, and plant hormone signal transduction and hormone biosynthesis pathways, such as abscisic acid, salicylic acid and jasmonic-isoleucine, were found to play roles in somatic embryogenesis. This study provided comprehensive gene expression sets for mature seeds and immature embryos that were served as an important platform resource for further functional studies in plant embryogenesis.
Key words： callus; immature embryo; mature seed; japonica rice; RNA sequence; hormone
Kaizhuan Xiao, Xiaohui Mao, Yingheng Wang, Jinlan Wang, Yidong Wei, Qiuhua Cai, Hua’an Xie, Jianfu Zhang . Transcript Profiling Reveals Abscisic Acid, Salicylic Acid and Jasmonic-Isoleucine Pathways Involved in High Regenerative Capacities of Immature Embryos Compared with Mature Seeds in japonica Rice[J]. Rice Science, 2018 , 25(4) : 227 -234 . DOI: 10.1016/j.rsci.2018.06.006
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