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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.4
- 수록면
- 77 - 92 (16page)
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Nitric oxide (NO), a non-charged, small, gaseous free-radical, is a signaling molecule in all plant cells. Several studies have proposed multifarious physiological roles for NO, from seed germination to plant maturation and senescence. Nitric oxide is thought to act as an antioxidant, quenching ROS during oxidative stress and reducing lipid peroxidation. NO also mediates photosynthesis and stomatal conductance and regulates programmed cell death, thus providing tolerance to abiotic stress. In mitochondria, NO participates in the electron transport pathway. Nitric oxide synthase and nitrate reductase are the key enzymes involved in NO-biosynthesis in aerobic plants, but non-enzymatic pathways have been reported as well.
Nitric oxide can interact with a broad range of molecules, leading to the modification of protein activity, GSH biosynthesis, S-nitrosylation, peroxynitrite formation, proline accumulation, etc., to sustain stress tolerance. In addition to these interactions, NO interacts with fatty acids to form nitro-fatty acids as signals for antioxidant defense. Polyamines and NO interact positively to increase polyamine content and activity. A large number of genes are reprogrammed by NO; among these genes, proline metabolism genes are upregulated. Exogenous NO application is also shown to be involved in salinity tolerance and/ or resistance via growth promotion, reversing oxidative damage and maintaining ion homeostasis. This review highlights NO-mediated salinity-stress tolerance in plants, including NO biosynthesis, regulation, and signaling. Nitric oxide-mediated ROS metabolism, antioxidant defense, and gene expression and the interactions of NO with other bioactive molecules are also discussed. We conclude the review with a discussion of unsolved issues and suggestions for future research.
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참고문헌 (133)
참고문헌 신청
Ahmad P / 2016 / Nitric oxide mitigates salt stress by regulating levels of osmolytes and antioxidant enzymes in chickpea / Front Plant Sci
Akter S / 2015 / Cysteines under ROS attack in plants: a proteomics view / J Exp Bot 66:2935~2944
Ali Q / 2017 / Seed priming by sodium nitroprusside improves salt tolerance in wheat (Triticum aestivum L.) by enhancing physiological and biochemical parameters / Plant Physiol Biochem 119:50~58
Arasimowicz M / 2007 / Nitric oxide as a bioactive signalling molecule in plant stress responses / Plant Sci 172:876~887
Arora D / 2016 / Mechanisms of nitric oxide crosstalk with reactive oxygen species scavenging enzymes during abiotic stress tolerance in plants / Free Radic Res 50:291~303
Akter S / 2015 / Cysteines under ROS attack in plants: a proteomics view / J Exp Bot 66:2935~2944
Ali Q / 2017 / Seed priming by sodium nitroprusside improves salt tolerance in wheat (Triticum aestivum L.) by enhancing physiological and biochemical parameters / Plant Physiol Biochem 119:50~58
Arasimowicz M / 2007 / Nitric oxide as a bioactive signalling molecule in plant stress responses / Plant Sci 172:876~887
Arora D / 2016 / Mechanisms of nitric oxide crosstalk with reactive oxygen species scavenging enzymes during abiotic stress tolerance in plants / Free Radic Res 50:291~303
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