作者
Xinhui Xia,Lulu Hao,Yifei Sun,Yisong Lv,Yihong Wang,Hongyou Wu,Zhiqiang Jiang,Xinru Li,Yuhan Yan,Xiaojian Chen,B. Li,Hao Li,Min-Hui Li,Yuhan Sun,Wenxu Ren,Yalin Xue,Qi You,Zhu Li,Qingyu Liao,Shiyun Xie,Yunsen Zhang,Changsui Zhao,Hongli Zhu,Chengrui Liang,Qing Jin,Zilong Song,Yuewen Deng,Ying Pan,Zuyi Yuan,Ying Zhang,Yuchen Yang
摘要
Lumnitzera littorea (Jack) Voigt is one of the most endangered mangrove species in China. Previous studies have showed the impact of chilling stress on L. littorea and the repsonses at physiological and biochemical levels, but few attentions have been paid at molecular level. In this study, we conducted genome-wide investigation of transcriptional and post-transcriptional dynamics in L. littorea in response to chilling stress (8 °C day/5 °C night). In the seedlings of L. littorea, chilling sensing and signal transducing, photosystem II regeneration and peroxidase-mediated reactive oxygen species (ROS) scavenging were substantially enhanced to combat the adverse impact induced by chilling exposure. We further revealed that alternative polyadenylation (APA) events participated in chilling stress-responsive processes, including energy metabolism and steroid biosynthesis. Furthermore, APA-mediated miRNA regulations downregulated the expression of the genes involved in fatty acid biosynthesis and elongation, and protein phosphorylation, reflecting the important role of post-transcriptional regulation in modulating chilling tolerance in L. littorea. Our findings present a molecular view to the adaptive characteristics of L. littorea and shed light on the conservation genomic approaches of endangered mangrove species.