Biocatalytic Degradation of Emerging Micropollutants

Sharma, Pooja; Bano, Ambreen; Yadav, Sangeeta; Singh, Surendra

doi:10.1007/s11244-023-01790-y

Cited by 8 publications

(5 citation statements)

References 146 publications

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“…At this stage, the SnRK2 kinase remains inactive, and the transcription factors responsible for controlling ABA-responsive genes cannot trigger the pathway. However, during stressful conditions, the ABA concentration increases due to elevated ABA production and slows down the degradation or release of the conjugated ABA-GE form [8]. The activation of SnRK2 enables it to undergo autophosphorylation and subsequently activate downstream effectors, like transcription factors and ion channels [79].…”

Section: Signaling Of Abscisic Acidmentioning

confidence: 99%

“…In response to abiotic stressors, they also activate a variety of signal transduction pathways [26,27]. According to earlier studies, stress tolerance increased in plants exposed to HMs by exogenous treatment with phytohormones [8]. As a result of HM exposure, the phytohormone endogenous levels also alter, modulating a number of plant stress adaptation traits [8,11].…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have also predicted that, in the near future, HMs will transcend solid and nuclear waste, elevating themselves to the status of one of the most hazardous pollutants with significant repercussions for humanity [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, the application of phytohormones as an alternative environmentally benign strategy to increase plant HM stress resistance has gained traction [8]. The chemical messengers known as phytohormones are created at quite low concentrations and are essential for controlling a variety of plant growth and developmental processes [24,25].…”

Section: Introductionmentioning

confidence: 99%

“…According to earlier studies, stress tolerance increased in plants exposed to HMs by exogenous treatment with phytohormones [8]. As a result of HM exposure, the phytohormone endogenous levels also alter, modulating a number of plant stress adaptation traits [8,11]. The characterization and identification of various pathways linked to HM stress mediated through phytohormones have been permitted by a lot of research tools like microarrays, system biology, mutant screening, expression profiling, proteomics, and bioinformatics [28].…”

Section: Introductionmentioning

confidence: 99%

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Abscisic Acid: Metabolism, Signaling, and Crosstalk with Other Phytohormones under Heavy Metal Stress

Bano,

Singh,

Singh

et al. 2023

Stresses

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Heavy metal (HM) stress poses a global risk to crops, ecological systems, and human health. It disrupts cellular ionic equilibrium, cell membrane integrity, metabolic balance, and the activities of enzymes and proteins, severely impacting physiological processes, plant development, and agricultural productivity. Although plants naturally activate defense mechanisms to mitigate the adverse effects of HM stress, they cannot completely prevent them. Phytohormones counter HM toxicity, aiding growth. External application and internal regulation via signaling/biosynthesis genes offer defense against HM-induced damage. A pivotal signaling molecule in plant adaptive responses to environmental stressors, including HM toxicity, is abscisic acid (ABA). Despite ABA’s role in abiotic stress responses such as drought and salinity, its function and crosstalk with other phytohormones under HM stress remain poorly understood. Nonetheless, exogenously applied ABA serves as a strategic approach to enhancing plants’ resistance to HM toxicity by promoting osmolyte accumulation and reinforcing antioxidant activity. ABA significantly regulates various plant growth and metabolic activities under diverse environmental conditions. This review highlights the effects of HM stress on plants and explores ABA involvement in production, signaling, catabolism, and transport within plant tissues. The purpose of this paper is to shed light on the complex interplay between the metabolism of ABA, its signaling, and its interactions with other phytohormones (e.g., auxins, gibberellins, and ethylene) during HM exposure. Furthermore, we delve into the function of ABA to mitigate HM stress and elucidate its interactions with other phytohormones.

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Section: Signaling Of Abscisic Acidmentioning

confidence: 99%