Generation Mechanisms of Reactive Oxygen Species in the Plant Cell

Tiwari, Santwana; Tiwari, Sanjesh; Singh, Madhulika; Singh, Arvind; Prasad, Sheo Mohan

doi:10.1002/9781119324928.ch1

Cited by 17 publications

(7 citation statements)

References 108 publications

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“…SOD, CAT, APX, GPX and GR are some of the most common ROS scavenging enzymes secreted by various cell organelles, such as chloroplast and mitochondria. 53 For instance, SOD and CAT together convert [O–O] 2− and H 2 O 2 to O 2 and H 2 O and additionally reduce · OH radical, while POD acts as a scavenger of ROS. In our study, the level of antioxidant enzymes (POD, APX and GPX) extracted from P. sativum foliage improved markedly with increasing the concentration of fungicides.…”

Section: Resultsmentioning

confidence: 99%

Toxicity of fungicides toPisum sativum: a study of oxidative damage, growth suppression, cellular death and morpho-anatomical changes

et al. 2018

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Section: Resultsmentioning

confidence: 99%

Toxicity of fungicides toPisum sativum: a study of oxidative damage, growth suppression, cellular death and morpho-anatomical changes

et al. 2018

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“…In plants, drought stress triggers the generation of toxic reactive oxygen species (ROS), such as the superoxide anion free radical (O 2 •− ), singlet oxygen ( 1 O 2 ), hydrogen peroxide (H 2 O 2 ) and the hydroxyl radical (OH•) because of the overflow of electrons from chloroplasts, mitochondria, peroxisomes and plasma membranes (Tiwari et al . 2018; Bhattacharjee 2019). Accumulation of ROS induces an oxidative burst in plants subjected to drought stress, and thus causes oxidative damage, including lipid peroxidation, nucleic acid damage, protein oxidation and programmed cell death (Choudhary et al .…”

Section: Introductionmentioning

confidence: 99%

Unravelling the role of arbuscular mycorrhizal fungi in mitigating the oxidative burst of plants under drought stress

2020

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With continued climate changes, soil drought stress has become the main limiting factor for crop growth in arid and semi-arid regions. A typical characteristic of drought stress is the burst of reactive oxygen species (ROS), causing oxidative damage. Plant-associated microbes, such as arbuscular mycorrhizal fungi (AMF), can regulate physiological and molecular responses to tolerate drought stress, and they have a strong ability to cope with drought-induced oxidative damage via enhanced antioxidant defence systems. AMF produce a limited oxidative burst in the arbuscule-containing root cortical cells. Similar to plants, AMF modulate a fungal network in enzymatic (e.g. GmarCuZnSOD and GintSOD1) and non-enzymatic (e.g. GintMT1, GinPDX1 and GintGRX1) antioxidant defence systems to scavenge ROS. Plants also respond to mycorrhization to enhance stress tolerance via metabolites and the induction of genes. The present review provides an overview of the network of plant À arbuscular mycorrhizal fungus dialogue in mitigating oxidative stress. Future studies should involve identifying genes and transcription factors from both AMF and host plants in response to drought stress, and utilize transcriptomics, proteomics and metabolomics to clarify a clear dialogue mechanism between plants and AMF in mitigating oxidative burst.

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“…Such as superoxide anion free radical (O 2 .– ), hydrogen peroxide (H 2 O 2 ) and hydroxyl radical (OH⋅), etc. produced in different subcellular compartments (e.g., plasma membranes, chloroplasts, peroxisomes, and mitochondria) ( Tiwari et al, 2017 ; Hasanuzzaman et al, 2021 ). The production of ROS can happen through a variety of pathways (peroxidases, excited chlorophyll, Glycolate and xanthine oxidase, fatty acid oxidation, and the electron transport chain in photosynthesis and respiration) ( Cruz de Carvalho, 2008 ; Li et al, 2009 ; Hasanuzzaman et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi contribute to reactive oxygen species homeostasis of Bombax ceiba L. under drought stress

Zhang²,

Liu³

et al. 2022

Front. Microbiol.

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Drought stress is one of the major abiotic factors limiting plant growth and causing ecological degradation. The regulation of reactive oxygen species (ROS) generation and ROS scavenging is essential to plant growth under drought stress. To investigate the role of arbuscular mycorrhizal fungi (AMF) on ROS generation and ROS scavenging ability under drought stress in Bombax ceiba, the ROS content, the expression levels of respiratory burst oxidase homologue (Rbohs), and the antioxidant response were evaluated in AMF and NMF (non-inoculated AMF) plants under drought stress. 14 BcRboh genes were identified in the B. ceiba genome and divided into five subgroups based on phylogenetic analysis. The effect of AMF on the expression profiles of BcRbohs were different under our conditions. AMF mainly downregulated the expression of Rbohs (BcRbohA, BcRbohD, BcRbohDX2, BcRbohE, BcRbohFX1, and BcRbohI) in drought-stressed seedlings. For well-water (WW) treatment, AMF slightly upregulated Rbohs in seedlings. AMF inoculation decreased the malondialdehyde (MDA) content by 19.11 and 20.85%, decreased the O2⋅– production rate by 39.69 and 65.20% and decreased H2O2 content by 20.06 and 43.21% compared with non-mycorrhizal (NMF) plants under drought stress in root and shoot, respectively. In addition, AMF inoculation increased the non-enzymatic antioxidants glutathione (GSH) and ascorbic acid (AsA) content in roots by 153.52 and 28.18% under drought stress, respectively. The activities of antioxidant enzymes (SOD, PX, CAT, APX, GPX, GR, MDAR, and DHAR) all increased ranging from 19.47 - 131.54% due to AMF inoculation under drought stress. In conclusion, these results reveal that AMF inoculation can maintain ROS homeostasis by mitigating drought-induced ROS burst, via decreasing ROS generation and enhancing ROS scavenging ability of B. ceiba seedlings.

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Generation Mechanisms of Reactive Oxygen Species in the Plant Cell

Cited by 17 publications

References 108 publications

Toxicity of fungicides toPisum sativum: a study of oxidative damage, growth suppression, cellular death and morpho-anatomical changes

Toxicity of fungicides toPisum sativum: a study of oxidative damage, growth suppression, cellular death and morpho-anatomical changes

Unravelling the role of arbuscular mycorrhizal fungi in mitigating the oxidative burst of plants under drought stress

Arbuscular mycorrhizal fungi contribute to reactive oxygen species homeostasis of Bombax ceiba L. under drought stress

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