Differential response of quinoa genotypes to drought and foliage-applied H2O2 in relation to oxidative damage, osmotic adjustment and antioxidant capacity
文献类型：期刊论文
| 作者 | Iqbal, Hassan1,3; Chen Yaning1; Waqas, Muhammad1,3; Shareef, Muhammad2,3; Raza, Syed Turab3,4 |
| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2018-11-30 |
| 卷号 | 164页码:344-354 |
| 关键词 | Antioxidant enzymes Drought stress Osmolytes Osmotic adjustment Inorganic ions and K+/Na+ ratio |
| ISSN号 | 0147-6513 |
| DOI | 10.1016/j.ecoenv.2018.08.004 |
| 通讯作者 | Iqbal, Hassan(hassancp1477@mails.ucas.edu.cn) ; Chen Yaning(chenyn@ms.xjb.ac.cn) |
| 英文摘要 | Quinoa (Chenopodium quinoa Willd.), a highly nutritious grain crop, is resistant to abiotic stresses (drought, salinity, and cold) and offers an alternate crop to endure harsh environmental conditions under the face of climate change. Naturally, quinoa genome displays a wide degree of variabilities in drought tolerance strategies. Therefore, the present study was designed to investigate drought tolerance variations and stress tolerance enhancement in four quinoa genotypes (Pichaman, Colorado-407D, IESP and 2-Want) thorough foliage-applied H2O2 with the purpose of identifying suitable genotype for water limited environments. The plants were exposed to two watering regimes (75% and 30% pot WHC) and foliage-applied H2O2 treatments (15 mM). The drought stress significantly reduced plant growth, relative water contents, chlorophyll and carotenoids contents and increased ROS production (H2O2 and O-2(center dot-)) resulting in higher oxidative damage in all quinoa genotypes. Besides, drought stress significantly enhanced the antioxidants (SOD, PPO, and PAL) activity, total soluble sugars, proline, AsA contents and increased the total accumulation of measured inorganic ions in all quinoa genotypes. The PCA analysis indicated that parameters related to osmotic adjustment and antioxidant capacity were more pronounced in 2-Want and IESP genotypes, while parameters depicting oxidative damage were higher in Colorado-407D and more specifically in Pichaman. However, foliage-applied H2O2 effectively improved the osmolytes accumulation, antioxidants activity and K+/Na* ratio which increased water relations, reduced lipid peroxidation and ultimately resulted in higher plant growth. Overall, 2-Want and IESP genotypes were found relatively more drought resistant, while exogenous application of H2O2 can be opted for more improvement in osmotic adjustment and antioxidant system, which may further enhance drought tolerance, even in sensitive genotypes of quinoa, such as Pichaman. |
| WOS关键词 | IMPROVES SALT TOLERANCE ; STRESS-INDUCED CHANGES ; HYDROGEN-PEROXIDE ; CHENOPODIUM-QUINOA ; WATER-DEFICIT ; ASCORBIC-ACID ; SUPEROXIDE DISMUTASES ; LIPID-PEROXIDATION ; LEAF EXPANSION ; WILLD. PLANTS |
| 资助项目 | Chinese Academy of Sciences (CAS)-the Academy of Sciences for the Developing World (TWAS) President's Fellowship Program for international Ph.D. students ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA19030204] |
| WOS研究方向 | Environmental Sciences & Ecology ; Toxicology |
| 语种 | 英语 |
| WOS记录号 | WOS:000449247600041 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 资助机构 | Chinese Academy of Sciences (CAS)-the Academy of Sciences for the Developing World (TWAS) President's Fellowship Program for international Ph.D. students ; Strategic Priority Research Program of the Chinese Academy of Sciences, China |
| 源URL | [http://ir.imde.ac.cn/handle/131551/24377]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 通讯作者 | Iqbal, Hassan; Chen Yaning |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, 818 Beijing South Rd, Urumqi, Peoples R China 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biog & Bio Resource Arid Land, Urumqi, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Iqbal, Hassan,Chen Yaning,Waqas, Muhammad,et al. Differential response of quinoa genotypes to drought and foliage-applied H2O2 in relation to oxidative damage, osmotic adjustment and antioxidant capacity[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2018,164:344-354. |
| APA | Iqbal, Hassan,Chen Yaning,Waqas, Muhammad,Shareef, Muhammad,&Raza, Syed Turab.(2018).Differential response of quinoa genotypes to drought and foliage-applied H2O2 in relation to oxidative damage, osmotic adjustment and antioxidant capacity.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,164,344-354. |
| MLA | Iqbal, Hassan,et al."Differential response of quinoa genotypes to drought and foliage-applied H2O2 in relation to oxidative damage, osmotic adjustment and antioxidant capacity".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 164(2018):344-354. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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