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Differential response of quinoa genotypes to drought and foliage-applied H2O2 in relation to oxidative damage, osmotic adjustment and antioxidant capacity
Iqbal, Hassan1,3; Chen Yaning1; Waqas, Muhammad1,3; Shareef, Muhammad2,3; Raza, Syed Turab3,4
Corresponding AuthorIqbal, Hassan(hassancp1477@mails.ucas.edu.cn) ; Chen Yaning(chenyn@ms.xjb.ac.cn)
2018
Source PublicationECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
ISSN0147-6513
EISSN1090-2414
Volume164Pages:344-354
SubtypeArticle
AbstractQuinoa (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.
KeywordAntioxidant enzymes Drought stress Osmolytes Osmotic adjustment Inorganic ions and K+/Na+ ratio
DOI10.1016/j.ecoenv.2018.08.004
Indexed BySCI
WOS KeywordIMPROVES SALT TOLERANCE ; STRESS-INDUCED CHANGES ; HYDROGEN-PEROXIDE ; CHENOPODIUM-QUINOA ; WATER-DEFICIT ; ASCORBIC-ACID ; SUPEROXIDE DISMUTASES ; LIPID-PEROXIDATION ; LEAF EXPANSION ; WILLD. PLANTS
Language英语
Quartile2区
Funding ProjectChinese 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]
TOP
WOS Research AreaEnvironmental Sciences & Ecology ; Toxicology
WOS SubjectEnvironmental Sciences ; Toxicology
WOS IDWOS:000449247600041
Funding OrganizationChinese 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
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24377
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorIqbal, Hassan; Chen Yaning
Affiliation1.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
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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.
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