Selenium and auxin mitigates arsenic stress in rice (Oryza sativa L.) by combining the role of stress indicators, modulators and genotoxicity assay

Pandey, Chandra Mouli; Gupta, Meetu

doi:10.1016/j.jhazmat.2015.01.044

Cited by 165 publications

(60 citation statements)

References 35 publications

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“…Selenium may have beneficial effects on plants and several studies have shown that at low doses Se protects the plants from variety of abiotic stresses including cold (Chu et al, 2010), drought (Hasanuzzaman and Fujita, 2011), and metal stress (Kumar et al, 2012, Pandey andGupta, 2015). However, selenium toxicity (selenosis) arises in plants after protective concentrations are exceeded (Gupta and Gupta 2017).…”

Section: Discussionmentioning

confidence: 99%

The reduction of selenium(IV) by boreal Pseudomonas sp. strain T5-6-I – Effects on selenium(IV) uptake in Brassica oleracea

Lusa

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Honkanen

et al. 2019

Environmental Research

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Selenium (Se) is an essential micronutrient but toxic when taken in excessive amounts. Therefore, understanding the metabolic processes related to selenium uptake and bacteria-plant interactions coupled with selenium metabolism are of high importance. We cultivated Brassica oleracea with the previously isolated heterotrophic aerobic Se(IV)-reducing Pseudomonas sp. T5-6-I strain to better understand the phenomena of bacteria-mediated Se(IV) reduction on selenium availability to the plants. B. oleracea grown on Murashige and Skoog medium (MS-salt agar) with and without of Pseudomonas sp. were amended with Se(IV)/ 75 Se(IV), and selenium transfer into plants was studied using autoradiography and gamma spectroscopy. XANES was in addition used to study the speciation of selenium in the B. oleracea plants. In addition, the effects of Se(IV) on the protein expression in B. oleracea was studied using HPLC-SEC. TEM and confocal microscopy were used to follow the bacterial/Se-aggregate accumulation in plants and the effects of bacterial inoculation on root-hair growth. In the tests using 75 Se(IV) on average 130% more selenium was translocated to the B. oleracea plants grown with Pseudomonas sp. compared to the plants grown with selenium, but without Pseudomonas sp.. In addition, these bacteria notably increased root hair density. Changes in the protein expression of B. oleracea were observed on the ~30 -58 kDa regions in the Se(IV) treated samples, probably connected e.g. to the oxidative stress induced by Se(IV) or expression of proteins connected to the Se(IV) metabolism. Based on the XANES measurements, selenium appears to accumulate in B. oleracea mainly in organic C-Se-H and C-Se-C bonds with and without bacteria inoculation. We conclude that the Pseudomonas sp. T5-6-I strain seems to contribute positively to the selenium accumulation in plants, establishing the high potential of Se 0 -producing bacteria in the use of phytoremediation and biofortification of selenium.

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Section: Discussionmentioning

confidence: 99%

The reduction of selenium(IV) by boreal Pseudomonas sp. strain T5-6-I – Effects on selenium(IV) uptake in Brassica oleracea

Lusa

Help

Honkanen

et al. 2019

Environmental Research

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“…Proline too is a well documented osmolyte involved in abiotic stress tolerance including heavy metal stress (Chandra et al, 2012;Corcuera et al, 2012;Diaz et al, 2014;Pandey & Gupta, 2015). Elevated levels of proline during stress conditions could be a result of increased catabolism of the phenolic compounds (Hamid et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Biochemical and physiological analysis of zinc tolerance in Jatropha curca

Badoni¹,

Kumari²,

Patade³

et al. 2016

JEBAS

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“…Although essentiality of Se to plants is in dilemma however, many workers have reported beneficial effect of Se in different plants (Cartes et al, 2010; Hasanuzzaman and Fujita, 2011; Pandey and Gupta, 2015). Brief outline of various role of Se in plants is described in pictorial form in Figure 5.…”

Section: Beneficial Effects Of Selenium In Plantsmentioning

confidence: 99%

“…Studies have shown that Se at low doses protect the plants from variety of abiotic stresses such as cold (Chu et al, 2010), drought (Hasanuzzaman and Fujita, 2011), desiccation (Pukacka et al, 2011), and metal stress (Kumar et al, 2012; Pandey and Gupta, 2015). Under stress conditions, reactive oxygen species are produced in plants which disrupt cell membranes, proteins etc.…”

Section: Beneficial Effects Of Selenium In Plantsmentioning

confidence: 99%

An Overview of Selenium Uptake, Metabolism, and Toxicity in Plants

2017

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Selenium (Se) is an essential micronutrient for humans and animals, but lead to toxicity when taken in excessive amounts. Plants are the main source of dietary Se, but essentiality of Se for plants is still controversial. However, Se at low doses protects the plants from variety of abiotic stresses such as cold, drought, desiccation, and metal stress. In animals, Se acts as an antioxidant and helps in reproduction, immune responses, thyroid hormone metabolism. Selenium is chemically similar to sulfur, hence taken up inside the plants via sulfur transporters present inside root plasma membrane, metabolized via sulfur assimilatory pathway, and volatilized into atmosphere. Selenium induced oxidative stress, distorted protein structure and function, are the main causes of Se toxicity in plants at high doses. Plants can play vital role in overcoming Se deficiency and Se toxicity in different regions of the world, hence, detailed mechanism of Se metabolism inside the plants is necessary for designing effective Se phytoremediation and biofortification strategies.

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Selenium and auxin mitigates arsenic stress in rice (Oryza sativa L.) by combining the role of stress indicators, modulators and genotoxicity assay

Cited by 165 publications

References 35 publications

The reduction of selenium(IV) by boreal Pseudomonas sp. strain T5-6-I – Effects on selenium(IV) uptake in Brassica oleracea

The reduction of selenium(IV) by boreal Pseudomonas sp. strain T5-6-I – Effects on selenium(IV) uptake in Brassica oleracea

Biochemical and physiological analysis of zinc tolerance in Jatropha curca

An Overview of Selenium Uptake, Metabolism, and Toxicity in Plants

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