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- W2912236798 abstract "Alpine plants remain the least studied plant communities in terrestrial ecosystems. However, how they adapt to high-altitude environments is far from clear. Here, we used RNA-seq to investigate a typical alpine plant maca (Lepidium meyenii) to understand its high-altitude adaptation at transcriptional and post-transcriptional level. At transcriptional level, we found that maca root significantly up-regulated plant immunity genes in day-time comparing to night-time, and up-regulated abiotic (cold/osmotic) stress response genes in Nov and Dec comparing to Oct. In addition, 17 positively selected genes were identified, which could be involved in mitochondrion. At post-transcriptional level, we found that maca had species-specific characterized alternative splicing (AS) profile which could be influenced by stress environments. For example, the alternative 3′ splice site events (A3SS, 39.62%) were predominate AS events in maca, rather than intron retention (IR, 23.17%). Interestingly, besides serine/arginine-rich (SR) proteins and long non-coding RNAs (lncRNAs), a lot of components in nonsense-mediated mRNA decay (NMD) were identified under differential alternative splicing (DAS), supporting AS coupled to NMD as essential mechanisms for maca's stress responses and high-altitude adaptation. Taken together, we first attempted to unveil maca's high-altitude adaptation mechanisms based on transcriptome and post-transcriptome evidence. Our data provided valuable insights to understand the high-altitude adaptation of alpine plants." @default.
- W2912236798 created "2019-02-21" @default.
- W2912236798 creator A5000174970 @default.
- W2912236798 creator A5007009156 @default.
- W2912236798 creator A5028529142 @default.
- W2912236798 creator A5058520795 @default.
- W2912236798 creator A5061438094 @default.
- W2912236798 creator A5061582993 @default.
- W2912236798 creator A5061842478 @default.
- W2912236798 creator A5066648861 @default.
- W2912236798 creator A5074801633 @default.
- W2912236798 creator A5078777969 @default.
- W2912236798 creator A5087279801 @default.
- W2912236798 date "2019-04-01" @default.
- W2912236798 modified "2023-09-25" @default.
- W2912236798 title "Alternative splicing coupled to nonsense-mediated mRNA decay contributes to the high-altitude adaptation of maca (Lepidium meyenii)" @default.
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