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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 387 - 395 (9page)
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Cerastium arcticum is one of the few flowering plants that thrives in the Arctic, suggesting that it possesses mechanisms for overcoming this extreme environment. To verify the functionality of C. arcticum dehydrin (CaDHN), known to play a protective role during cellular dehydration, the gene was introduced to Arabidopsis and Escherichia coli. Transgenic plants expressing CaDHN had significantly greater fresh weight and relative water content than wild-type plants under 15% PEG treatments, representing enhanced tolerance to drought. Under chilling conditions, transgenic plants remained vivid green, containing about 1.35-fold higher levels of chlorophyll than wild-type plants, and transgenic seeds germinated 2?3 days earlier with approximately threefold higher germination rates than wild-type seeds. Furthermore, oxidative stress under chilling conditions was 30% lower in transgenic plants than in wild-type plants. Transgenic plants also showed improved tolerance to various stresses, such as cold shock and salinity. In addition, transformed E. coli expressing CaDHN also showed enhanced tolerance to stress conditions, which suggests that CaDHN is conserved across taxa to provide tolerance to stress. These results indicate that CaDHN plays an important role in conferring tolerance to oxidative stress.
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참고문헌 (35)
참고문헌 신청
Allagulova CR / 2003 / The plant dehydrins : structure and putative functions / Biochemistry (Moscow) 68:945~951
Archambault A / 2011 / PR-10, defensin and cold dehydrin genes are among those over expressed in Oxytropis (Fabaceae) species adapted to the arctic / Funct Integr Genomics 11:497~505
Artus NN / 1996 / Constitutive expression of the cold-regulated Arabidopsis thaliana COR15a gene affects both chloroplast and protoplast freezing tolerance / Proc Natl Acad Sci 93:13404~13409
Battaglia M / 2008 / The enigmatic LEA proteins and other hydrophilins / Plant Physiol 148:6~24
Bokhorst S / 2008 / Impacts of extreme winter warming in the sub-Arctic : growing season responses of dwarf shrub heathland / Glob Change Biol 14:2603~2612
Archambault A / 2011 / PR-10, defensin and cold dehydrin genes are among those over expressed in Oxytropis (Fabaceae) species adapted to the arctic / Funct Integr Genomics 11:497~505
Artus NN / 1996 / Constitutive expression of the cold-regulated Arabidopsis thaliana COR15a gene affects both chloroplast and protoplast freezing tolerance / Proc Natl Acad Sci 93:13404~13409
Battaglia M / 2008 / The enigmatic LEA proteins and other hydrophilins / Plant Physiol 148:6~24
Bokhorst S / 2008 / Impacts of extreme winter warming in the sub-Arctic : growing season responses of dwarf shrub heathland / Glob Change Biol 14:2603~2612
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