Role of Plant Growth Regulators (PGRs) in Mitigation of Heavy Metal Phytotoxicity in Plants

Singh, Arun Dev; Sharma, Pooja; Kohli, Sukhmeen Kaur; Kumar, Pardeep; Singh, Ravinder J.; Arora, Priya; Kaur, Rupinder; Sharma, Ashutosh; Bhardwaj, Renu

doi:10.1007/978-3-030-45975-8_14

Cited by 3 publications

(3 citation statements)

References 222 publications

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“…The application of PGPR-based bioinoculants reduced the negative effect of metals such as copper (Cu), zinc (Zn), cadmium (Cd), nickel (Ni), and lead (Pb) in beans [195], potatoes [196], peas [197], tomato, canola, and Indian mustard [198]. Singh et al [199] demonstrated the beneficial association of PGPR for alleviating the adverse effects of heavy metals in different crops and vegetables.…”

Section: Pgpr-mediated Tolerance To Heat Metal Toxicity and Other Str...mentioning

confidence: 99%

Plant-Growth-Promoting Rhizobacteria Emerging as an Effective Bioinoculant to Improve the Growth, Production, and Stress Tolerance of Vegetable Crops

Kumar

Giri

Pandey

et al. 2021

IJMS

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Vegetable cultivation is a promising economic activity, and vegetable consumption is important for human health due to the high nutritional content of vegetables. Vegetables are rich in vitamins, minerals, dietary fiber, and several phytochemical compounds. However, the production of vegetables is insufficient to meet the demand of the ever-increasing population. Plant-growth-promoting rhizobacteria (PGPR) facilitate the growth and production of vegetable crops by acquiring nutrients, producing phytohormones, and protecting them from various detrimental effects. In this review, we highlight well-developed and cutting-edge findings focusing on the role of a PGPR-based bioinoculant formulation in enhancing vegetable crop production. We also discuss the role of PGPR in promoting vegetable crop growth and resisting the adverse effects arising from various abiotic (drought, salinity, heat, heavy metals) and biotic (fungi, bacteria, nematodes, and insect pests) stresses.

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Section: Pgpr-mediated Tolerance To Heat Metal Toxicity and Other Str...mentioning

confidence: 99%

Plant-Growth-Promoting Rhizobacteria Emerging as an Effective Bioinoculant to Improve the Growth, Production, and Stress Tolerance of Vegetable Crops

Kumar

Giri

Pandey

et al. 2021

IJMS

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“…Plants have adapted detoxifying systems to counteract HMs toxicity by changing signaling molecules (e.g., ROS), phytochelatin concentration, redox state, flavonoid biosynthetic pathway, and antioxidant enzyme activities in response to HMs toxicity (Berni et al, 2019). However, application of plant growth regulators (PGRs) or phytohormones, gasotransmitters, and nanoparticle (NPs) applications have recently been shown to strengthen the plant's tolerance mechanism towards HMs toxicity (Singh et al, 2020; Chen et al, 2022b; Ahmad et al, 2023). Numerous biotechnological approaches, such as omics and genetic engineering, are being proposed to gain knowledge and insight into the processes and pathways involved in plant responses and tolerance to HMs toxicity (Raza et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Unveiling Innovative Approaches to Mitigate Metals/Metalloids Toxicity for Sustainable Agriculture

Charagh,

Hui,

Wang

et al. 2024

Physiologia Plantarum

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Due to anthropogenic activities, environmental pollution of heavy metals/metalloids (HMs) has increased and received growing attention in recent decades. Plants growing in HM‐contaminated soils have slower growth and development, resulting in lower agricultural yield. Exposure to HMs leads to the generation of free radicals (oxidative stress), which alters plant morpho‐physiological and biochemical pathways at the cellular and tissue levels. Plants have evolved complex defense mechanisms to avoid or tolerate the toxic effects of HMs, including HMs absorption and accumulation in cell organelles, immobilization by forming complexes with organic chelates, extraction via numerous transporters, ion channels, signaling cascades, and transcription elements, among others. Nonetheless, these internal defensive mechanisms are insufficient to overcome HMs toxicity. Therefore, unveiling HMs adaptation and tolerance mechanisms is necessary for sustainable agriculture. Recent breakthroughs in cutting‐edge approaches such as phytohormone and gasotransmitters application, nanotechnology, omics, and genetic engineering tools have identified molecular regulators linked to HMs tolerance, which may be applied to generate HMs‐tolerant future plants. This review summarizes numerous systems that plants have adapted to resist HMs toxicity, such as physiological, biochemical, and molecular responses. Diverse adaptation strategies have also been comprehensively presented to advance plant resilience to HMs toxicity that could enable sustainable agricultural production.

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“…Plants have complex inherent biological mechanisms to counter the adversities of HM but fail to mitigate them at toxic levels ( Chandrakar et al, 2020 ). However, plant growth regulators (PGRs) play a crucial role in strengthening the tolerance mechanisms of plants against HM stress ( Hasanuzzaman et al, 2018 ; Singh et al, 2020 ). PGRs are small chemical messengers that control various phenological characteristics, physio-biochemical, and developmental aspects in plants in a concentration of the molecular inducer-dependent and plant development stage-dependent manner ( Vimala, 1985 ).…”

Section: Introductionmentioning

confidence: 99%

Abscisic acid: Metabolism, transport, crosstalk with other plant growth regulators, and its role in heavy metal stress mitigation

et al. 2022

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Heavy metal (HM) stress is threatening agricultural crops, ecological systems, and human health worldwide. HM toxicity adversely affects plant growth, physiological processes, and crop productivity by disturbing cellular ionic balance, metabolic balance, cell membrane integrity, and protein and enzyme activities. Plants under HM stress intrinsically develop mechanisms to counter the adversities of HM but not prevent them. However, the exogenous application of abscisic acid (ABA) is a strategy for boosting the tolerance capacity of plants against HM toxicity by improving osmolyte accumulation and antioxidant machinery. ABA is an essential plant growth regulator that modulates various plant growth and metabolic processes, including seed development and germination, vegetative growth, stomatal regulation, flowering, and leaf senescence under diverse environmental conditions. This review summarizes ABA biosynthesis, signaling, transport, and catabolism in plant tissues and the adverse effects of HM stress on crop plants. Moreover, we describe the role of ABA in mitigating HM stress and elucidating the interplay of ABA with other plant growth regulators.

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Role of Plant Growth Regulators (PGRs) in Mitigation of Heavy Metal Phytotoxicity in Plants

Cited by 3 publications

References 222 publications

Plant-Growth-Promoting Rhizobacteria Emerging as an Effective Bioinoculant to Improve the Growth, Production, and Stress Tolerance of Vegetable Crops

Plant-Growth-Promoting Rhizobacteria Emerging as an Effective Bioinoculant to Improve the Growth, Production, and Stress Tolerance of Vegetable Crops

Unveiling Innovative Approaches to Mitigate Metals/Metalloids Toxicity for Sustainable Agriculture

Abscisic acid: Metabolism, transport, crosstalk with other plant growth regulators, and its role in heavy metal stress mitigation

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