Tasos1 and Tatm20 Genes Expression and Nutrient Uptake in Wheat Seedlings May Be Altered via Excess Cadmium Exposure and Inoculation With Azospirillum Brasilense Sp7 Under Saline Condition

Ghassemi, Hamid Reza

doi:10.15666/aeer/1602_17971817

Cited by 11 publications

(4 citation statements)

References 64 publications

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“…A bacterial strain, SaMR12, up-regulates the expression of large number of metal transporter gene in S. alfredii plant [286]. As per Ghassemi and Mostajeran [287], Azospirillum brasilense enhances the Cd tolerance in T. aestivum with the help of Tatm20 gene. Jebara et al [288] reported PCS and F-box as the main genes for Cd tolerance in Sulla coronaria.…”

Section: Molecular Mechanisms Of Pgprmentioning

confidence: 92%

Plant Growth-Promoting Rhizobacteria as a Green Alternative for Sustainable Agriculture

2021

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Environmental stress is a major challenge for sustainable food production as it reduces yield by generating reactive oxygen species (ROS) which pose a threat to cell organelles and biomolecules such as proteins, DNA, enzymes, and others, leading to apoptosis. Plant growth-promoting rhizobacteria (PGPR) offers an eco-friendly and green alternative to synthetic agrochemicals and conventional agricultural practices in accomplishing sustainable agriculture by boosting growth and stress tolerance in plants. PGPR inhabit the rhizosphere of soil and exhibit positive interaction with plant roots. These organisms render multifaceted benefits to plants by several mechanisms such as the release of phytohormones, nitrogen fixation, solubilization of mineral phosphates, siderophore production for iron sequestration, protection against various pathogens, and stress. PGPR has the potential to curb the adverse effects of various stresses such as salinity, drought, heavy metals, floods, and other stresses on plants by inducing the production of antioxidant enzymes such as catalase, peroxidase, and superoxide dismutase. Genetically engineered PGPR strains play significant roles to alleviate the abiotic stress to improve crop productivity. Thus, the present review will focus on the impact of PGPR on stress resistance, plant growth promotion, and induction of antioxidant systems in plants.

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Section: Molecular Mechanisms Of Pgprmentioning

confidence: 92%

Plant Growth-Promoting Rhizobacteria as a Green Alternative for Sustainable Agriculture

2021

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“…Exogenous applications of PGPR a strain, Streptomyces strain IT25, decreased catalase (CAT),and it is reported that PGPRs upregulated SOD (superoxide dismutase), POD (peroxidase), and PPO (plant polyphenol oxidases) genes to sequester Cd stress ( Khanna et al, 2019 ; Abbasi et al, 2020 ) ( Table 6 ). Azospirillum brasilense may ameliorate the negative effects of Cd stress by upregulation of lower Na/K ratio, TaSOS1 transcript level, proline, higher pigments, and antioxidant activities to improve dry weight ( Ghassemi and Mostajeran, 2018 ). PGPR-mediated remediation of HMs and promotion of plant growth depend on PGPR strains coded by several genes and must be understood to build a multidimensional PGPR strain to perform multidimensional functions.…”

Section: Remediation Of Cadmium-polluted Soilsmentioning

confidence: 99%

Cadmium Phytotoxicity, Tolerance, and Advanced Remediation Approaches in Agricultural Soils; A Comprehensive Review

et al. 2022

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Cadmium (Cd) is a major environmental contaminant due to its widespread industrial use. Cd contamination of soil and water is rather classical but has emerged as a recent problem. Cd toxicity causes a range of damages to plants ranging from germination to yield suppression. Plant physiological functions, i.e., water interactions, essential mineral uptake, and photosynthesis, are also harmed by Cd. Plants have also shown metabolic changes because of Cd exposure either as direct impact on enzymes or other metabolites, or because of its propensity to produce reactive oxygen species, which can induce oxidative stress. In recent years, there has been increased interest in the potential of plants with ability to accumulate or stabilize Cd compounds for bioremediation of Cd pollution. Here, we critically review the chemistry of Cd and its dynamics in soil and the rhizosphere, toxic effects on plant growth, and yield formation. To conserve the environment and resources, chemical/biological remediation processes for Cd and their efficacy have been summarized in this review. Modulation of plant growth regulators such as cytokinins, ethylene, gibberellins, auxins, abscisic acid, polyamines, jasmonic acid, brassinosteroids, and nitric oxide has been highlighted. Development of plant genotypes with restricted Cd uptake and reduced accumulation in edible portions by conventional and marker-assisted breeding are also presented. In this regard, use of molecular techniques including identification of QTLs, CRISPR/Cas9, and functional genomics to enhance the adverse impacts of Cd in plants may be quite helpful. The review’s results should aid in the development of novel and suitable solutions for limiting Cd bioavailability and toxicity, as well as the long-term management of Cd-polluted soils, therefore reducing environmental and human health hazards.

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“…In the case of cadmium, Ta t m20 gene codifies a transmembrane transport that is expressed in the presence of Cd in wheat. When wheat plants were inoculated with Azospirillum brasilense, this gene was expressed much less than in the absence of the inoculation suggesting that A. brasilense helps plants to decrease Cd uptake and accumulation [97]. In this study, we also studied the expression of TasSOS1 gene involving in keeping the plant cell homeostasis in the presence of high salt concentrations.…”

Section: Molecular Mechanisms In the Bacteria-plant Interactions Undementioning

confidence: 99%

“…In contrast to Ta t m20 gene, TasSOS1 is overexpressed in inoculated plants under salinity stress. This overexpression maintains the homeostasis in plants and makes plant more tolerant to salt excess [97]. In M. sativa plants grown under heavy metal conditions, the genes involved in the phytochelatins synthesis were overexpressed in inoculated plants helping plant to detoxify and to grow in the presence of this stress.…”

Section: Molecular Mechanisms In the Bacteria-plant Interactions Undementioning

confidence: 99%

Helping Legumes under Stress Situations: Inoculation with Beneficial Microorganisms

Navarro‐Torre¹,

Bessadok²,

Flores-Duarte³

et al. 2020

Legume Crops [Working Title]

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In the upcoming years, legume crops will be subjected to multiple, diverse, and overlapping environmental stressors (raise in global temperatures and CO 2 , drought, salinity, and soil pollution). These factors will menace legume productivity and food quality and security. In this context, tolerant plant growth promoting rhizobacteria (PGPR) are useful biotechnological tools to assist legume establishment and growth. In this chapter, tolerant PGPR able to promote legume growth will be revised. Besides, in the era of-omics, the mechanisms underlying this interaction are being deciphered, particularly transcriptomic, proteomic, and metabolomic changes modulated by PGPR, as well as the molecular dialog legume-rhizobacteria.

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Tasos1 and Tatm20 Genes Expression and Nutrient Uptake in Wheat Seedlings May Be Altered via Excess Cadmium Exposure and Inoculation With Azospirillum Brasilense Sp7 Under Saline Condition

Abstract: TaSOS1 and TaTM20 gene expression and nutrient uptake in wheat seedlings may be altered via cadmium and inoculation with Azospirillum brasilense Sp7 under saline condition -1797 -

Cited by 11 publications

References 64 publications

Plant Growth-Promoting Rhizobacteria as a Green Alternative for Sustainable Agriculture

Plant Growth-Promoting Rhizobacteria as a Green Alternative for Sustainable Agriculture

Cadmium Phytotoxicity, Tolerance, and Advanced Remediation Approaches in Agricultural Soils; A Comprehensive Review

Helping Legumes under Stress Situations: Inoculation with Beneficial Microorganisms

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