Insights into uptake, accumulation, and subcellular distribution of selenium among eight wheat (Triticum aestivum L.) cultivars supplied with selenite and selenate

Wang，Min1; Ali，Fayaz1; Qi，Mingxing1; Peng，Qin2; Wang，Mengke1,3; Bañuelos，Gary S.4; Miao，Shuyin1; Li，Zhe1,5; Dinh，Quang Toan1,6; Liang，Dongli1,7

2021

10.1016/j.ecoenv.2020.111544

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY   影响因子和分区

0147-6513

1090-2414

Selenium (Se)-enriched wheat can be improved by altering Se sources and selecting wheat cultivars. Such improvement can affect subcellular distribution and speciation of Se in wheat. Thus, a pot experiment was conducted to investigate Se uptake and distribution when Se was applied as selenite or selenate at low and high rates (1 and 10 mg kg, respectively). Moreover, Se's impact on the grain and biomass yield of eight wheat cultivars was also investigated. The subcellular distribution and speciation of Se were also explored to elucidate Se metabolism and micro-distribution pattern in wheat. Results showed that biomass and grain yield were decreased with the application of both selenite and selenate in almost all the cultivars, regardless of the Se rate. Application high Se rate resulted in a significant (p < 0.05) decrease in grain yield and biomass compared with low rate of Se. Compared with the low rate of selenite application, the grain and the biomass yield of ZM-9023 significantly (p < 0.05) increased by about 15% for low rate of selenate application. In addition, both selenite and selenate treatment increased the uptake of Se in each part of wheat, compared with the control. Selenium was mostly accumulated in the grain and root of wheat under selenite treatment, while more Se accumulation was found in leaves and straw for selenate application. Further investigation on the subcellular distribution of Se showed that the proportion of Se in soluble fraction was significantly (p < 0.05) higher in wheat leaves than that in organelle fraction and cell walls (46%–66%). Meanwhile, Se was the main species found in soluble fraction, whereas SeMet and MeSeCys were the species predominantly stored in organelle fraction. In conclusion, wheat cultivar ZM-9023 is the most Se-rich potential cultivar, and the isolation of Se in the soluble fraction plays an important role in Se tolerance and accumulation.

Selenium Speciation Subcellular distribution Uptake Wheat cultivars

SCI

英语

其他

Public Welfare Geological Survey Project of Shaanxi Geological Survey Institute, China[20180307] ; National Natural Science Foundation of China, China[41571454]

Environmental Sciences & Ecology ; Toxicology

Environmental Sciences ; Toxicology

WOS:000592456500013

ACADEMIC PRESS INC ELSEVIER SCIENCE

ENVIRONMENT/ECOLOGY

2-s2.0-85096236999

Scopus

1.College of Natural Resources and Environment,Northwest A&F University,Yangling,712100,China
2.Chongqing Key Laboratory of Environmental Materials & Remediation Technologies,College of Chemistry and Environmental Engineering,Chongqing University of Arts and Sciences,Yongchuan,402160,China
3.Guangdong Key Laboratory of Soil and Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.USDA,Agricultural Research Service,San Joaquin Valley Agricultural Sciences Center,Parlier,93648-9757,United States
5.Department of Natural Resources and Environmental Sciences,University of Illinois at Urbana-Champaign,61801,United States
6.Center for Monitoring and Environmental Protection Thanh Hoa-Department of Natural Resources and Environment of Thanh Hoa,Thanh Hoa city,Viet Nam
7.Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China,Ministry of Agriculture,Yangling,712100,China

Wang，Min,Ali，Fayaz,Qi，Mingxing,et al. Insights into uptake, accumulation, and subcellular distribution of selenium among eight wheat (Triticum aestivum L.) cultivars supplied with selenite and selenate[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2021,207.

Wang，Min.,Ali，Fayaz.,Qi，Mingxing.,Peng，Qin.,Wang，Mengke.,...&Liang，Dongli.(2021).Insights into uptake, accumulation, and subcellular distribution of selenium among eight wheat (Triticum aestivum L.) cultivars supplied with selenite and selenate.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,207.

Wang，Min,et al."Insights into uptake, accumulation, and subcellular distribution of selenium among eight wheat (Triticum aestivum L.) cultivars supplied with selenite and selenate".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 207(2021).