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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제29권 제9호
- 발행연도
- 2019.1
- 수록면
- 1,453 - 1,459 (7page)
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Zeaxanthin is an important pigment in the photo-protection mechanism of microalgae. However, zeaxanthin epoxidase, an enzyme involved in the accumulation and conversion of zeaxanthin, has not been extensively studied in microalgae. In this work, we report the expression pattern of zeaxanthin epoxidase in Dunaliella tertiolecta (DtZEP) at different light and diverse salinity conditions. To confirm the responsiveness to light conditions, the ZEP expression pattern was investigated in photoperiodic (16 h of light and 8 h of dark) and continuous (24 h of light and 0 h of dark) light conditions. mRNA expression levels in photoperiodic conditions fluctuated along with the light/dark cycle, whereas those in continuous light remained unchanged. In varying salinity conditions, the highest mRNA and protein levels were detected in cells cultured in 1.5 M NaCl, and ZEP expression levels in cells shifted from 0.6 M NaCl to 1.5 M NaCl increased gradually. These results show that mRNA expression of DtZEP responds rapidly to the light/dark cycle or increased salinity, whereas changes in protein synthesis do not occur within a short period. Taken together, we show that DtZEP gene expression responds rapidly to light irradiation and hyperosmotic stress. In addition, ZEP expression patterns in light or salinity conditions are similar to those of higher plants, even though the habitat of D. tertiolecta is different.
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참고문헌 (30)
참고문헌 신청
Jahns P / 2012 / The role of the xanthophyll cycle and of lutein in photoprotection of photosystem II / Biochim. Biophys. Acta 1817:182~193
Goss R / 2010 / Regulation and function of xanthophyll cycle-dependent photoprotection in algae / Photosynth. Res 106:103~122
Demmig-Adams B / 1996 / The role of xanthophyll cycle carotenoids in the protection of photosynthesis / Trends Plant Sci 1:21~26
Cowan A / 1995 / Stress induction of zeaxanthin formation in the β-carotene accumulating alga Dunaliella salina Teod / J. Plant Physiol 146:554~562
Schwarz N / 2014 / Tissue-specific accumulation and regulation of zeaxanthin epoxidase in Arabidopsis reflect the multiple functions of the enzyme in plastids / Plant Cell Physiol 56:346~357
Goss R / 2010 / Regulation and function of xanthophyll cycle-dependent photoprotection in algae / Photosynth. Res 106:103~122
Demmig-Adams B / 1996 / The role of xanthophyll cycle carotenoids in the protection of photosynthesis / Trends Plant Sci 1:21~26
Cowan A / 1995 / Stress induction of zeaxanthin formation in the β-carotene accumulating alga Dunaliella salina Teod / J. Plant Physiol 146:554~562
Schwarz N / 2014 / Tissue-specific accumulation and regulation of zeaxanthin epoxidase in Arabidopsis reflect the multiple functions of the enzyme in plastids / Plant Cell Physiol 56:346~357
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