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| Involvement of antioxidant defense system in chill hardening-induced chilling tolerance in Jatropha curcas seedlings | |
| Ao, P. X. | |
| 2013 | |
| Source Publication | Acta Physiologiae Plantarum
 |
| ISSN | 0137-5881 |
| Volume | 35Issue:1Pages:153-160 |
| Abstract | Jatropha curcas L. is a sustainable energy plant with great potential for biodiesel production, and low temperature is an important limiting factor for its distribution and production. In this present work, chill hardening-induced chilling tolerance and involvement of antioxidant defense system were investigated in J. curcas seedlings. The results showed that chill hardening at 10 or 12 A degrees C for 1 and 2 days greatly lowered death rate and alleviated electrolyte leakage as well as accumulation of the lipid peroxidation product malondialdehyde (MDA) of J. curcas seedlings under severe chilling stress at 1 A degrees C for 1-7 days, indicating that the chill hardening significantly improved chilling tolerance of J. curcas seedlings. Measurement of activities of the antioxidant enzymes superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT), peroxidase (POD), and glutathione reductase (GR), and the levels of the antioxidants ascorbic acid (AsA) and glutathione (GSH) showed the chill hardening at 12 A degrees C for 2 days could obviously increase the activities of these antioxidant enzymes and AsA and GSH contents in the hardened seedlings. When the hardened and non-hardening (control) seedlings were subjected to severe chilling stress at 1 A degrees C for 1-7 days, the chill-hardened seedlings generally maintained significantly higher activities of the antioxidant enzymes SOD, APX, CAT, POD, and GR, and content of the antioxidants AsA and GSH as well as ratio of the reduced antioxidants to total antioxidants [AsA/(AsA DHA) and GSH/(GSH GSSG)], when compared with the control without chill hardening. All above-mentioned results indicated that the chill hardening could enhance the chilling tolerance, and the antioxidant defense system plays an important role in the chill hardening-induced chilling tolerance in J. curcas seedlings. |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/7633 |
| Collection | 热带植物资源可持续利用重点实验室特色文献_小桐子相关文献 |
| Recommended Citation GB/T 7714 | Ao, P. X.. Involvement of antioxidant defense system in chill hardening-induced chilling tolerance in Jatropha curcas seedlings[J]. Acta Physiologiae Plantarum,2013,35(1):153-160. |
| APA | Ao, P. X..(2013).Involvement of antioxidant defense system in chill hardening-induced chilling tolerance in Jatropha curcas seedlings.Acta Physiologiae Plantarum,35(1),153-160. |
| MLA | Ao, P. X.."Involvement of antioxidant defense system in chill hardening-induced chilling tolerance in Jatropha curcas seedlings".Acta Physiologiae Plantarum 35.1(2013):153-160. |
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