The Coordination of Gene Expression within Photosynthesis Pathway for Acclimation of C-4 Energy Crop Miscanthus lutarioriparius

2016-09-02

作 者:Xing SL, Kang LF, Xu Q, Fan YY, Liu W, Zhu CY, Song ZH, Wang Q, Yan J*, Li JQ, Sang T*

影响因子: 3.948

刊物名称: Frontiers in Plant Science

出版年份: 2016

卷:   期:    页码: Doi:10.3389/fpls.2016.00109

文章摘要 : 

    As a promising candidate for the second-generation C4 energy crop, Miscanthus lutarioriparius has well acclimated to the water-limited and high-light Loess Plateau in China by improving photosynthesis rate and water use efficiency (WUE) compared to its native habitat along Yangtze River. Photosynthetic genes were demonstrated as one major category of the candidate genes underlying the physiological superiority. To further study how photosynthetic genes interact to improve the acclimation potential of M. lutarioriparius, population expression patterns within photosynthesis pathway were explored between one mild environment and one harsh environment. We found that 108 transcripts in assembled transcriptome of M. lutarioriparius were highly similar to genes in three Kyoto Encyclopedia of Genes and Genomes (KEGG) photosynthesis pathways of sorghum and maize. Phylogenetic analyses using sorghum, maize, rice, and Arabidopsis genes of dark reaction identified 23 orthologs and 30 paralogs of M. lutarioriparius photosynthetic genes. These genes were also clustered into two kinds of expression pattern. 87% of transcripts in dark reaction were up-regulated and all 14 chloroplast-encoded transcripts in light reaction increased degradation in the harsh environment compared to the mild environment. Moreover, 80.8% of photosynthetic transcripts were coordinated at transcription level under the two environments. Interestingly, LHCI and PSI were significantly correlated with F-ATPase and C4 cycle. Overall, this study indicates the coordinated expression between cyclic electron transport (consisting of LHCI, PSI, and ATPase) and CO2-concentrating mechanism (C4 cycle) could account for photosynthesis plasticity on M. lutarioriparius acclimation potential.

全文链接

http://journal.frontiersin.org/article/10.3389/fpls.2016.00109/full


附件下载:

位于北京西部香山脚下的中国科学院植物研究所是我国系统与进化生物学领域的第一个重点实验室

版权所有 © 系统与进化植物学重点实验室[中国科学院植物研究所]
ICP备16067583号-12 网站管理

联系我们

  • 地址:北京市海淀区 香山南辛村20号
  • 邮编:100093
  • 电话:010-6283 6086
  • 传真:010-6283 6095
  • 电邮:lseb@ibcas.ac.cn

语言切换