지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.1
- 수록면
- 87 - 97 (11page)
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In field conditions, the zebra2 (z2) mutant in rice (Oryza sativa) produces leaves with transverse pale-green/yellow stripes. It was recently reported that ZEBRA2 encodes carotenoid isomerase (CRTISO) and that low levels of lutein, an essential carotenoid for non-photochemical quen-ching, cause leaf variegation in z2 mutants. However, we found that the z2 mutant phenotype was completely suppressed by growth under continuous light (CL; permissive) conditions, with concentrations of chlorophyll, carotenoids and chloroplast proteins at normal levels in z2 mutants under CL. In addition, three types of reactive oxygen species (ROS; superoxide [O2-], hydrogen peroxide [H2O2], and singlet oxygen [1O2]) accumulated to high levels in z2 mutants grown under short-day conditions (SD; alternate 10-h light/14-h dark; restrictive), but do not ac-cumulate under CL conditions. However, the levels of lutein and zeaxanthin in z2 leaves were much lower than normal in both permissive CL and restrictive SD growth conditions, indicating that deficiency of these two carotenoids is not responsible for the leaf variegation phenotype. We found that the CRTISO substrate tetra-cis-lycopene accumulated during the dark periods under SD, but not under CL conditions. Its accumulation was also positively correlated with 1O2 levels generated during the light period, which consequently altered the expression of 1O2-res-ponsive and cell death-related genes in the variegated z2 leaves. Taking these results together, we propose that the z2 leaf variegation can be largely attributed to photoperiodic accumulation of tetra-cis-lycopene and generation of excessive 1O2 under natural day-night conditions.
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참고문헌 (55)
참고문헌 신청
조원길 / 200909 / Alternatively spliced vascular endothelial growth factor receptor-2 is an essential endogenous inhibitor of lymphatic vessel growth / Nature Medicine 15(9):1023~74
Amir, H. / 1999 / Lycopene and 1,25-dihydroxyvitamin D3 cooperate in the inhibition of cell cycle progression and induction of differentiation in HL-60 leukemic cells / Nutr. Cancer 33:105~112
Chai, C. / 2011 / ZEBRA2, encoding a carotenoid isomerase, is involved in photoprotection in rice / Plant Mol. Biol 75:211~221
Chen, Y. / 2010 / Isolation and characterization of the Z-ISO gene encoding a missing component of carotenoid biosynthesis in plants / Plant Physiol 153:66~79
Cornish, K. / 1988 / Phenotypic expression of wild-type tomato and three wilty mutants in relation to abscisic acid accumulation in roots and leaflets of reciprocal grafts / Plant Physiol 87:190~194
Amir, H. / 1999 / Lycopene and 1,25-dihydroxyvitamin D3 cooperate in the inhibition of cell cycle progression and induction of differentiation in HL-60 leukemic cells / Nutr. Cancer 33:105~112
Chai, C. / 2011 / ZEBRA2, encoding a carotenoid isomerase, is involved in photoprotection in rice / Plant Mol. Biol 75:211~221
Chen, Y. / 2010 / Isolation and characterization of the Z-ISO gene encoding a missing component of carotenoid biosynthesis in plants / Plant Physiol 153:66~79
Cornish, K. / 1988 / Phenotypic expression of wild-type tomato and three wilty mutants in relation to abscisic acid accumulation in roots and leaflets of reciprocal grafts / Plant Physiol 87:190~194
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