Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11356-015-5392-8 |
Water deficit and aluminum interactive effects on generation of reactive oxygen species and responses of antioxidative enzymes in the seedlings of two rice cultivars differing in stress tolerance | |
Pandey, Poonam; Srivastava, Rajneesh Kumar; Rajpoot, Ritika; Rani, Anjana; Pandey, Akhilesh Kumar; Dubey, R. S. | |
通讯作者 | Dubey, R. S. |
会议名称 | 2nd Contaminated Land, Ecological Assessment and Remediation (CLEAR 2014) Conference - Environmental Pollution and Remediation |
会议日期 | OCT 05-08, 2014 |
会议地点 | Chuncheon, SOUTH KOREA |
英文摘要 | Aluminum (Al) is a major constraint to crop productivity in acid soils, whereas water deficit severely limits crop production in arid and semi-arid regions of the world. The objective of the present study was to examine the effects of both stresses, Al excess and water deficit, individually and in combination on the production of the reactive oxygen species (ROS) superoxide anion (O2E (TM)(-)), hydrogen peroxide (H2O2), hydroxyl radical, and lipid peroxidation and the activity of antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), and guaiacol peroxidase (GPX) in the seedlings of two rice (Oryza sativa L.) cvs. Malviya-36 (sensitive to water deficit and Al) and Vandana (tolerant to water deficit and Al). When 15-day grown seedlings were exposed to water deficit (created with 15 % polyethylene glycol, PEG-6000) or Al (1 mM AlCl3) treatment or both treatments together for 24-72 h, the lengths and fresh weights of root/shoot declined in the seedlings of the sensitive cultivar, whereas in the tolerant seedlings, either little or insignificant decline in these parameters was observed due to the treatments. Biochemical determinations and histochemical studies revealed that under a similar level of water deficit, Al, or combined treatment, seedlings of sensitive cultivar showed a higher level of production of O2E (TM)(-), H2O2, hydroxyl radical, and lipid peroxides compared to the tolerant seedlings. Seedlings of tolerant cultivars, both in roots and shoots, had constitutively higher activity levels of antioxidative enzymes SOD, CAT, and GPX and showed a greater increase in activity under water deficit or Al treatment alone or in combination compared to the similarly treated seedlings of sensitive cultivar. Our results suggest that a lower constitutive level of ROS and a high antioxidative enzyme capacity are associated with tolerance to both water deficit and Al excess in rice seedlings. |
英文关键词 | Aluminum toxicity Water deficit Oxidative stress Antioxidative defense Oryza sativa L |
来源出版物 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH |
ISSN | 0944-1344 |
EISSN | 1614-7499 |
出版年 | 2016 |
卷号 | 23 |
期号 | 2 |
页码 | 1516-1528 |
出版者 | SPRINGER HEIDELBERG |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | India |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000368200200056 |
WOS关键词 | OXIDATIVE STRESS ; DEFENSE SYSTEM ; ROOT-GROWTH ; SUPEROXIDE ; PLANTS ; APOPLAST ; TOXICITY ; DROUGHT ; CADMIUM ; LEAD |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/304884 |
作者单位 | Banaras Hindu Univ, Dept Biochem, Fac Sci, Varanasi 221005, Uttar Pradesh, India |
推荐引用方式 GB/T 7714 | Pandey, Poonam,Srivastava, Rajneesh Kumar,Rajpoot, Ritika,et al. Water deficit and aluminum interactive effects on generation of reactive oxygen species and responses of antioxidative enzymes in the seedlings of two rice cultivars differing in stress tolerance[C]:SPRINGER HEIDELBERG,2016:1516-1528. |
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