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RISS 인기검색어
- 검색키워드
- 저자 : Hejie Chen (검색결과 3 건)
- 무료
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Effects of Drought Stress on the Antioxidant Systems in Three Species of Diospyros L.
Ping Wei,Yong Yang,Fei Wang,Hejie Chen 한국원예학회 2015 Horticulture, Environment, and Biotechnology Vol.56 No.5
Drought stress is a limiting factor for plant cultivation in many areas of China and persimmon has good capacity to withstand water shortage. Three species of Diospyros (three accession of Diospyros lotus, referred to as accession No. 824, 846, and 847; one accession of Diospyros kaki var. sylvestris referred to as 869; and one accession of Diospyros virginiana referred to as 844) were chosen for drought stress analysis. We withheld water from healthy two-year-old potted seedlings for 20 days, and compared the effects of water stress on malondialdehyde (MDA), superoxide free radical (O2.-), hydrogen peroxide (H2O2), antioxidative enzyme, glutathione (GSH), and ascorbic acid (AsA) levels in the leaves of the three species. In the treatment group, water stress increased the membrane lipid peroxidation in the three species, but a more significant increase was observed in the D. kaki var. sylvestris 869 than in the D. virginiana 844. Moreover, accumulation of O2.- and H2O2 was faster in weakly drought-resistant hybrids than in the highly drought- resistant hybrids. Though the activities of antioxidant enzymes and antioxidant contents were increased in the three species under drought stress, the activities of superoxide dismutase, catalase, peroxidase and ascorbate peroxidase were stimulated to a greater extent in D. virginiana 844 than in D. lotus and D. kaki var. sylvestris 869. In addition, the GSH, AsA, and relative water contents were increased significantly in D. virginiana 844, but not in D. kaki var. sylvestris 869. In the control group, no significant changes in lipid peroxidation and relevant antioxidant parameters were detected among the three species. These results indicated that changes of MDA, O2.-, and H2O2 content, antioxidative enzyme activities, and GSH and AsA concentrations were correlated to drought resistance in the different species. D. virginiana 844 had a higher antioxidation capacity in response to drought than the other two species.
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Physiological Response of Young Seedlings from Five Accessions of Diospyros L. under Salinity Stress
Wei, Ping,Yang, Yong,Fang, Ming,Wang, Fei,Chen, Hejie Korean Society of Horticultural Science 2016 원예과학기술지 Vol.34 No.4
Salinity stress limits plant cultivation in many areas worldwide; however, persimmon (Diospyros spp.) has high tolerance to salt. Five accessions of Diospyros [three of Diospyros lotus (accession numbers 824, 846, and 847); one of Diospyros kaki var. sylvestris (869); and one of Diospyros virginiana (844)] were chosen for analysis of salinity stress. We compared the effects of salt stress on plant growth, relative water content (RWC), malondialdehyde (MDA), electrolyte leakage (EL), hydrogen peroxide content ($H_2O_2$), and antioxidative enzyme activities (superoxide dismutase, SOD; catalase, CAT; peroxidase, POD; and ascorbate peroxidase, APX) in leaves of healthy potted seedlings from each of the five accessions after salt treatment for 25 days. Salt stress affected the growth of plants in all five accessions, with all three D. lotus accessions showing the most severe effect. Salt stress increased membrane lipid peroxidation in all accessions, but a stronger increase was observed in the three D. lotus accessions. Moreover, accumulation of $H_2O_2$ was faster in salt-sensitive D. lotus compared to salt-tolerant D. virginiana 844. The activities of all antioxidant enzymes increased in D. virginiana 844 and in D. kaki var. sylvestris 869; the activities of SOD, CAT, and APX were at similar levels in D. virginiana 844 and D. kaki var. sylvestris 869, but POD activity was stimulated to a greater extent in D. virginiana 844. The activities of all antioxidant enzymes (except POD) decreased in D. lotus 824 and increased (except for SOD) in D.lotus 846. The activities of SOD and APX decreased in D. lotus 847, whereas POD and CAT activities both increased. Relative water content decreased significantly in D. lotus. No significant changes in lipid peroxidation or relevant antioxidant parameters were detected in any of the accessions in controls treated with 0.0% NaCl. D. virginiana 844 had higher antioxidant capacity in response to salinity compared to other persimmon rootstocks. These results indicate that changes of these key physiological variables are related to salinity resistance in different accessions of persimmon.
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Physiological Response of Young Seedlings from Five Accessions of Diospyros L. under Salinity Stress
Ping Wei,Yong Yang,Ming Fang,Fei Wang,Hejie Chen 한국원예학회 2016 원예과학기술지 Vol.34 No.4
Salinity stress limits plant cultivation in many areas worldwide; however, persimmon (Diospyros spp.) has high tolerance to salt. Five accessions of Diospyros [three of Diospyros lotus (accession numbers 824, 846, and 847); one of Diospyros kaki var. sylvestris (869); and one of Diospyros virginiana (844)] were chosen for analysis of salinity stress. We compared the effects of salt stress on plant growth, relative water content (RWC), malondialdehyde (MDA), electrolyte leakage (EL), hydrogen peroxide content (H₂O₂), and antioxidative enzyme activities (superoxide dismutase, SOD; catalase, CAT; peroxidase, POD; and ascorbate peroxidase, APX) in leaves of healthy potted seedlings from each of the five accessions after salt treatment for 25 days. Salt stress affected the growth of plants in all five accessions, with all three D. lotus accessions showing the most severe effect. Salt stress increased membrane lipid peroxidation in all accessions, but a stronger increase was observed in the three D. lotus accessions. Moreover, accumulation of H₂O₂ was faster in salt-sensitive D. lotus compared to salt-tolerant D. virginiana 844. The activities of all antioxidant enzymes increased in D. virginiana 844 and in D. kaki var. sylvestris 869; the activities of SOD, CAT, and APX were at similar levels in D. virginiana 844 and D. kaki var. sylvestris 869, but POD activity was stimulated to a greater extent in D. virginiana 844. The activities of all antioxidant enzymes (except POD) decreased in D. lotus 824 and increased (except for SOD) in D.lotus 846. The activities of SOD and APX decreased in D. lotus 847, whereas POD and CAT activities both increased. Relative water content decreased significantly in D. lotus . No significant changes in lipid peroxidation or relevant antioxidant parameters were detected in any of the accessions in controls treated with 0.0% NaCl. D. virginiana 844 had higher antioxidant capacity in response to salinity compared to other persimmon rootstocks. These results indicate that changes of these key physiological variables are related to salinity resistance in different accessions of persimmon.
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