KOPRI Repository

Green under snow: Adaptive genetic characteristics of plant species living in the polar regions

Metadata Downloads
Title
Green under snow: Adaptive genetic characteristics of plant species living in the polar regions
Other Titles
극지식물의 환경적응 유전메커니즘 연구
Authors
Lee, Jong Eun
Park, Hyun
Kim, Sanghee
Cho, Sung-Mi
Lee, Hyoungseok
Keywords
결빙방지단백질; 남극개미자리; 남극식물; 북극식물; 전사체 분석; 클로로모나스
Issue Date
2017
Citation
Lee, Jong Eun, et al. 2017. Green under snow: Adaptive genetic characteristics of plant species living in the polar regions. The 23rd International Symposium on Polar Sciences, Life at the Extremes. 극지연구소. 2017.05.17~2017.05.18.
Abstract
Polar regions have environmental factors such as low temperature, high UV radiation, dryness, extreme diurnal cycles, which are very disadvantageous to life. To understand the molecular and physiological adaptation of living organisms to harsh environmental stress, we have developed transcriptome and genome databases of plant species, including green algae, lichen symbiotic photobionts and flowering plants, inhabiting the polar region, and studied the molecular and biochemical functions of the genes associated with the specific environments. As a part of such efforts, (I) we have identified low temperature-specific expressed genes in cultures of psychrophilic Chloromonas strain (KCCPM, KNF32) in order to investigate the transcriptome response of Chloromonas species under low temperature environment, and many of them were identified as Type II IBPs. The IBPs we found were found in all psychrophilic Arctic/Antarctic Chloromonas strains, and the levels of expression were greatly increased by low temperature. They have a genotype of the multi-exon structure and can be found to exist as many homologous genes in the genome. Their promoters have binding sites for transcription factors that play a major role in the cold signaling transduction of the flowering plants. Overexpression of Chloromonas IBPs improves the freezing resistance of transgenic Arabidopsis plants, which can infer their function in plant cells. (II) Second, we focused on the physiological and developmental differences of flowering plants in extreme natural habitats. Colobanthus quitensis, one of two flowering plants in Antarctica, grows in the form of a moss carpet. We performed comparative RNA-seq analysis on the trancriptome of the naturally grown plants in the Antarctic field in growing season, and on the transcriptome of the stress-free growth chamber plants. In this session, the characteristics of gene groups expressed in natural habitat environment and how these gene groups induce physiological and developmental differences in the plant, will be discussed.
URI
http://repository.kopri.re.kr/handle/201206/8266
Conference Name
The 23rd International Symposium on Polar Sciences, Life at the Extremes
Conference Place
극지연구소
Conference Date
2017.05.17~2017.05.18
Files in This Item
General Conditions
      ROMEO Green
    Can archive pre-print and post-print or publisher's version/PDF
      ROMEO Blue
    Can archive post-print (ie final draft post-refereeing) or publisher's version/PDF
      ROMEO Yellow
    Can archive pre-print (ie pre-refereeing)
      ROMEO White
    Archiving not formally supported

    qrcode

    Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

    Browse