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Application of ferrous sulfate alleviates negative impact of cadmium in rice(Oryza sativa L.)

BIOCELL 2021年第6期45卷 1631-1649页

作者： JAVARIA afzal XIUKANG WANG MUHAMMAD HAMZAH SALEEM XUECHENG SUN SHAHID HUSSAIN IMRAN KHAN MUHAMMAD SHOAIB RANA SHAKEEL AHMED samrah afzal awan SAJID FIAZ OMAR AZIZ KASHIF ALI KUBAR SHAFAQAT ALI CHENGXIAO HU Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtze River) Ministry of Agriculture and Rural AffairsHuazhong Agricultural UniversityWuhan430070China Department of Soil Science Sindh Agriculture UniversityTandojam70060Pakistan College of Life Sciences Yan’an UniversityYan’an716000China College of Plant Science and Technology Huazhong Agricultural UniversityWuhan430070China Schools of Materials Science and Engineering Jiangsu UniversityZhenjiang212013China Department of Grassland Science Sichuan Agricultural UniversityChengdu611130China Instituto de Farmacia Facultad de CienciasUniversidad Austral de ChileValdivia5110566Chile Department of Plant Breeding and Genetics The University of HaripurKhyber Pakhtunkhwa22620Pakistan Department of Soil&Environmental Sciences University of Agriculture FaisalabadSub-Campus DepalpurOkaraPakistan Faculty of Agriculture Lasbela University of AgricultureWater and Marine SciencesUthal90150Pakistan Department of Environmental Sciences and Engineering Government College UniversityFaisalabad38000Pakistan Department of Biological Sciences and Technology China Medical UniversityTaichung40402Taiwan

Soil contamination with toxic heavy metals[such as cadmium(Cd)]is becoming a serious global problem due to rapid development of social ***(Fe),being an important element,has been found effective in enhancing plant tolerance against biotic and abiotic *** present study investigated the extent to which different levels of Ferrous sulphate(FeSO_(4))modulated the Cd tolerance of rice(Oryza sativa L.),when maintained in artificially Cd spiked regimes.A pot experiment was conducted under controlled conditions for 146 days,by using natural soil,mixed with different levels of CdCl_(2)[0(no Cd),0.5 and 1 mg/kg]together with the exogenous application of FeSO_(4) at[0(no Fe),1.5 and 3 mg/kg]levels to monitor different growth,gaseous exchange characteristics,oxidative stress,antioxidative responses,minerals accumulation,organic acid exudation patterns of *** results depicted that addition of Cd to the soil significantly(P<0.05)decreased plant growth and biomass,gaseous exchange parameters,mineral uptake by the plants,sugars(soluble,reducing,and non-reducing sugar)and altered the ultrastructure of chloroplasts,plastoglobuli,mitochondria,and many other cellular organelles in Cd-stressed *** compared to those plants which were grown without the addition of Cd in the ***,Cd toxicity boosted the production of reactive oxygen species(ROS)by increasing the contents of malondialdehyde(MDA),which is the indication of oxidative stress in *** and was also manifested by hydrogen peroxide(H_(2)O_(2))contents and electrolyte leakage to the membrane bounded ***,activities of various antioxidative enzymes like superoxidase dismutase(SOD),peroxidase(POD),catalase(CAT)and ascorbate peroxidase(APX)and non-enzymatic antioxidants like phenolics,flavonoid,ascorbic acid,anthocyanin and proline contents increased up to a Cd level of 0.5 mg/kg in the soil but were significantly diminished at the highest Cd level of 1 mg/kg in the soil compar

关键词： Antioxidants Defense mechanism Heavy metals Iron Organic acids exudation

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