Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate
Li, Xiong1,2; Wu, Yuansheng3,4; Li, Boqun1,2; Yang, Yonghong3,4; Yang, Yongping1,2
2018-01-04
发表期刊FRONTIERS IN PLANT SCIENCE
ISSN1664-462X
卷号8页码:02207
摘要Selenium (Se) is an essential trace element for humans. About 70% of the regions in China, including most of the Tibetan Plateau, are faced with Se deficiency problems. Turnip is mainly distributed around the Tibetan Plateau and is one of the few local crops. In the present study, we compared the absorption and translocation differences of Se (IV) selenite and Se (VI) selenate in turnip. The results showed that Se treatment, either by soil addition (0.2-2mg Se kg(-1) dry soil) or by foliar spraying (50-200mg L-1 Se), could significantly increase the Se concentrations in turnips, and 0.5mg Se (IV) or Se (VI) kg(-1) dry matter in soils could improve the biomasses of turnips. Moreover, turnip absorbed significantly more Se (VI) than Se (IV) at the same concentration and also transferred much more Se (VI) from roots to leaves. Based on the Se concentrations, as well as the bioconcentration factors and translocation coefficients, we considered that turnip might be a potential Se indicator plant. Subsequently, we estimated the daily Se intake for adults based on the Se concentrations in turnip roots. The results indicated that Se (IV) should be more suitable as an artificial Se fertilizer for turnips, although the levels found in most samples in this study could cause selenosis to humans. In addition, we also estimated the optimum and maximum Se concentrations for treating turnips based on the linear relations between Se concentrations in turnip roots and Se treatment concentrations. The results provided preliminary and useful information about Se biofortification in turnips.
关键词Selenium Deficiency Turnip Selenite Selenate Tibetan Plateau
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/60417
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming, Yunnan, Peoples R China
3.Yunnan Agr Univ, Educ Minist China, Key Lab Agrobiodivers & Pest Management, Kunming, Yunnan, Peoples R China
4.Yunnan Agr Univ, Coll Plant Protect, Kunming, Yunnan, Peoples R China
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Li, Xiong,Wu, Yuansheng,Li, Boqun,et al. Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate[J]. FRONTIERS IN PLANT SCIENCE,2018,8:02207.
APA Li, Xiong,Wu, Yuansheng,Li, Boqun,Yang, Yonghong,&Yang, Yongping.(2018).Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate.FRONTIERS IN PLANT SCIENCE,8,02207.
MLA Li, Xiong,et al."Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate".FRONTIERS IN PLANT SCIENCE 8(2018):02207.
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