지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.1
- 수록면
- 159 - 166 (8page)
이용수
초록· 키워드
오류제보하기
We have previously investigated the proteome changes of rice leaves under heat stress (Lee et al. in Proteomics 2007a, 7:3369-3383), wherein a group of antioxidant proteins and heat shock proteins (HSPs) were found to be regulated differently. The present study focuses on the biochemical changes and gene expression profiles of heat shock protein and antioxidant genes in rice leaves in response to heat stress ($42^{\circ}C$) during a wide range of exposure times. The results show that hydrogen peroxide and proline contents increased significantly, suggesting an oxidative burst and osmotic imbalance under heat stress. The mRNA levels of chaperone 60, HSP70, HSP100, chloroplastic HSP26, and mitochondrial small HSP responded rapidly and showed maximum expression after 0.5 or 2 h under heat stress. Transcript levels of ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR) and Cu-Zn superoxide dismutase (Cu-Zn SOD) showed a rapid and marked accumulation upon heat stress. While prolonged exposure to heat stress resulted in increased transcript levels of monodehydroascorbate reductase, peroxidase, glyoxalase 1, glutathione reductase, thioredoxin peroxidase, 2-Cysteine peroxiredoxin, and nucleoside diphosphate kinase 1, while the transcription of catalase was suppressed. Consistent with their changes in gene expression, the enzyme activities of APX and DHAR also increased significantly following exposure to heat stress. These results suggest that oxidative stress is usually caused by heat stress, and plants apply complex HSP- and antioxidant-mediated defense mechanisms to cope with heat stress.
목차
등록된 정보가 없습니다.
참고문헌 (37)
참고문헌 신청
Ahsan, N / 2007 / A comparative proteomic analysis of tomato leaves in response to water logging stress / Physiologia Plantarum 131:555~570
Ahsan, N / 2008 / Glyphosate-induced oxidative stress in rice leaves revealed by proteomic approach / Plant Physiology and Biochemistry 46:1062~1070
Alcázar, R / 2011 / Integration of polyamines in the cold acclimation response / Plant Science 180:31~38
Asada, K / 1992 / Ascorbate peroxidase-a hydrogen peroxide scavenging enzyme in plants / Physiologia Plantarum 85:235~241
Asada, K / 1996 / Radical production and scavenging in chloroplasts, In Photosynthesis and the Environment / Kluwer Academic :123~150
Ahsan, N / 2008 / Glyphosate-induced oxidative stress in rice leaves revealed by proteomic approach / Plant Physiology and Biochemistry 46:1062~1070
Alcázar, R / 2011 / Integration of polyamines in the cold acclimation response / Plant Science 180:31~38
Asada, K / 1992 / Ascorbate peroxidase-a hydrogen peroxide scavenging enzyme in plants / Physiologia Plantarum 85:235~241
Asada, K / 1996 / Radical production and scavenging in chloroplasts, In Photosynthesis and the Environment / Kluwer Academic :123~150
이 논문의 저자 정보
최근 본 자료
댓글(0)
0