A tau class glutathione-S-transferase (OsGSTU5) confers tolerance against arsenic toxicity in rice by accumulating more arsenic in root

Tiwari, Madhu; Kidwai, Maria; Dutta, Prasanna; Narayan, Shiv; Gautam, Neelam; Chawda, Khushboo; Shirke, Pramod Arvind; Mishra, Arun Kumar; Chakrabarty, Debasis

doi:10.1016/j.jhazmat.2021.128100

Cited by 28 publications

(14 citation statements)

References 90 publications

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“…Both MeJA and SA, induced the upregulation of glutathione S-transferase, which has been associated with plant response to oxidative stress and inactivation of toxic compounds [90][91][92][93], which is consistent with the higher levels of NPQ observed in treated plants compared to control plants. This gene is induced by several stresses [94,95] and has been linked mainly to the SA regulation pathway [34,91], but its overexpression also in MeJA-treated plants suggests a concomitant crosstalk between both regulatory pathways despite their commonly reported antagonistic interaction [10,96]. This interconnection could also explain the expression pattern of PR5 in MeJA-treated plants [11].…”

Section: Discussionmentioning

confidence: 99%

Effects of exogenous application of methyl jasmonate and salicylic acid on the physiological and molecular response of ‘Dusa®’ avocado to Rosellinia necatrix

Moreno-Pérez,

Martínez-Ferri,

Berg

et al. 2023

Preprint

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Background: Elicitors are compounds that induce defense responses in plants similar to those induced by pathogens. Methyl jasmonate (MeJA) and salicylic acid (SA) are two of the most used elicitors due to their importance in mediating plant responses to abiotic and biotic stresses. Elicitor recognition involves the triggering of various biochemical mechanisms and physiological responses that can provide plants with long-term protection against a wide range of pathogens. In this sense, exogenous application of MeJA and SA could protect susceptible avocado plants, such as 'Dusa®' rootstock, against white root rot (WRR) disease caused by the necrotrophic fungus Rosellinia necatrix, one of the main biotic stresses affecting avocado orchards in southern Spain and other countries. Thus, this work evaluated the effects of MeJA or SA on the physiological and molecular response of 'Dusa®' plants, and their ability to provide some protection against R. necatrix. Results: MeJA and SA application in ‘Dusa®’ plants increased photoprotective mechanisms (NPQ) and upregulated the glutathione S-transferase, suggesting the triggering of mechanisms closely related to oxidative stress relief and reactive oxygen species (ROS) scavenging. In contrast to SA, MeJA effects in avocado were more pronounced at the morpho-anatomical level, including functional traits such as high leaf mass area (LMA), high stomatal density, high root/shoot ratio, closely related to strategies to cope with harsh environments, such as water scarcity and WRR disease. In addition, MeJA upregulated a greater number of defense-related genes than SA, most notably overexpression of a glu protease inhibitor, a key gene in avocado defense against R. necatrix. The overall effects of MeJA on ‘Dusa®’ avocado rootstock improved its performance after R. necatrix inoculation, as indicated by delayed WRR disease progression. In all plants, R. necatrix infection led to impaired rubisco carboxylation activity in the early stages of disease progression. Conclusions: MeJA increased avocado tolerance to the necrotrophic pathogen R. necatrix by inducing a primed state that delayed WRR disease symptoms in susceptible avocado ‘Dusa®’. These findings point towards the use of MeJA application as an environmentally friendly strategy to mitigate the impact of this disease on susceptible rootstocks in avocado orchards.

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Section: Discussionmentioning

confidence: 99%

Effects of exogenous application of methyl jasmonate and salicylic acid on the physiological and molecular response of ‘Dusa®’ avocado to Rosellinia necatrix

Moreno-Pérez,

Martínez-Ferri,

Berg

et al. 2023

Preprint

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“…The PCs make a complex with the As, and the complex is sequestered into the vacuoles by ABCC1/ABCC2 transporters. Therefore, GST is involved in arsenic detoxification (Khan et al, 2018;Kumar and Trivedi, 2018;Tiwari et al, 2022). Localized near the root tip, OsNramp5 is a key transporter for Cd absorption in rice and a member of the NRAMP transporter family.…”

Section: Metal-binding Proteins In Ricementioning

confidence: 99%

Phytoremediation technologies and their mechanism for removal of heavy metal from contaminated soil: An approach for a sustainable environment

et al. 2023

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The contamination of soils with heavy metals and its associated hazardous effects are a thrust area of today’s research. Rapid industrialization, emissions from automobiles, agricultural inputs, improper disposal of waste, etc., are the major causes of soil contamination with heavy metals. These contaminants not only contaminate soil but also groundwater, reducing agricultural land and hence food quality. These contaminants enter the food chain and have a severe effect on human health. It is important to remove these contaminants from the soil. Various economic and ecological strategies are required to restore the soils contaminated with heavy metals. Phytoremediation is an emerging technology that is non-invasive, cost-effective, and aesthetically pleasing. Many metal-binding proteins (MBPs) of the plants are significantly involved in the phytoremediation of heavy metals; the MBPs include metallothioneins; phytochelatins; metalloenzymes; metal-activated enzymes; and many metal storage proteins, carrier proteins, and channel proteins. Plants are genetically modified to enhance their phytoremediation capacity. In Arabidopsis, the expression of the mercuric ion-binding protein in Bacillus megaterium improves the metal accumulation capacity. The phytoremediation efficiency of plants is also enhanced when assisted with microorganisms, biochar, and/or chemicals. Removing heavy metals from agricultural land without challenging food security is almost impossible. As a result, crop selections with the ability to sequester heavy metals and provide food security are in high demand. This paper summarizes the role of plant proteins and plant–microbe interaction in remediating soils contaminated with heavy metals. Biotechnological approaches or genetic engineering can also be used to tackle the problem of heavy metal contamination.

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“…Recently a member belonging to the glutathione-S-transferase family (tau class), OsGSTU5 conferred As tolerance. Through their experiments, [188] inferred the role of OsGSTU5 in As chelation with GSH followed by sequestration of the complex into the vacuole (root) for detoxification with the help of OsABCC1 transporter hence blocking its transport in the shoot.…”

Section: Arsenic Detoxificationmentioning

confidence: 99%

Negative Impacts of Arsenic on Plants and Mitigation Strategies

Sinha

Datta

Mishra

et al. 2023

Plants

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Arsenic (As) is a metalloid prevalent mainly in soil and water. The presence of As above permissible levels becomes toxic and detrimental to living organisms, therefore, making it a significant global concern. Humans can absorb As through drinking polluted water and consuming As-contaminated food material grown in soil having As problems. Since human beings are mobile organisms, they can use clean uncontaminated water and food found through various channels or switch from an As-contaminated area to a clean area; but plants are sessile and obtain As along with essential minerals and water through roots that make them more susceptible to arsenic poisoning and consequent stress. Arsenic and phosphorus have many similarities in terms of their physical and chemical characteristics, and they commonly compete to cause physiological anomalies in biological systems that contribute to further stress. Initial indicators of arsenic’s propensity to induce toxicity in plants are a decrease in yield and a loss in plant biomass. This is accompanied by considerable physiological alterations; including instant oxidative surge; followed by essential biomolecule oxidation. These variables ultimately result in cell permeability and an electrolyte imbalance. In addition, arsenic disturbs the nucleic acids, the transcription process, and the essential enzymes engaged with the plant system’s primary metabolic pathways. To lessen As absorption by plants, a variety of mitigation strategies have been proposed which include agronomic practices, plant breeding, genetic manipulation, computer-aided modeling, biochemical techniques, and the altering of human approaches regarding consumption and pollution, and in these ways, increased awareness may be generated. These mitigation strategies will further help in ensuring good health, food security, and environmental sustainability. This article summarises the nature of the impact of arsenic on plants, the physio-biochemical mechanisms evolved to cope with As stress, and the mitigation measures that can be employed to eliminate the negative effects of As.

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A tau class glutathione-S-transferase (OsGSTU5) confers tolerance against arsenic toxicity in rice by accumulating more arsenic in root

Cited by 28 publications

References 90 publications

Effects of exogenous application of methyl jasmonate and salicylic acid on the physiological and molecular response of ‘Dusa®’ avocado to Rosellinia necatrix

Effects of exogenous application of methyl jasmonate and salicylic acid on the physiological and molecular response of ‘Dusa®’ avocado to Rosellinia necatrix

Phytoremediation technologies and their mechanism for removal of heavy metal from contaminated soil: An approach for a sustainable environment

Negative Impacts of Arsenic on Plants and Mitigation Strategies

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