Oxidative stress tolerance in plants

Krishnamurthy, Aparna; Rathinasabapathi, Bala

doi:10.4161/psb.25761

Cited by 92 publications

(16 citation statements)

References 44 publications

(60 reference statements)

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“…1−3) IAA also participates in the stress responses in plants. 4) The action of IAA on plant cells has long been one of core interests among plant biologists and recent advances opened the ways to outline the molecular mechanisms underlying the processes, especially the cell-to-cell interactions involving Auxin Binding Protein 1 (ABP1); PIN1, an exporter of IAA; and two antagonistic GTPases, ROP2 and ROP6, 3) and also intracellular signaling events through the SCF TIR1 -Aux/ IAA-ARF pathway, 5) which might be the best-studied examples of plant hormone signaling paths.…”

mentioning

confidence: 99%

Indole-3-acetic acid-induced oxidative burst and an increase in cytosolic calcium ion concentration in rice suspension culture

Nguyen

Umemura²,

Kawano

2016

Bioscience, Biotechnology, and Biochemistry

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Indole-3-acetic acid (IAA) is the major natural auxin involved in the regulation of a variety of growth and developmental processes such as division, elongation, and polarity determination in growing plant cells. It has been shown that dividing and/or elongating plant cells accompanies the generation of reactive oxygen species (ROS) and a number of reports have suggested that hormonal actions can be mediated by ROS through ROS-mediated opening of ion channels. Here, we surveyed the link between the action of IAA, oxidative burst, and calcium channel activation in a transgenic cells of rice expressing aequorin in the cytosol. Application of IAA to the cells induced a rapid and transient generation of superoxide which was followed by a transient increase in cytosolic Ca(2+) concentration ([Ca(2+)]c). The IAA-induced [Ca(2+)]c elevation was inhibited by Ca(2+) channel blockers and a Ca(2+) chelator. Furthermore, ROS scavengers effectively blocked the action of IAA on [Ca(2+)]c elevation.

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mentioning

confidence: 99%

Indole-3-acetic acid-induced oxidative burst and an increase in cytosolic calcium ion concentration in rice suspension culture

Nguyen

Umemura²,

Kawano

2016

Bioscience, Biotechnology, and Biochemistry

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“…Reactive oxygen species such as H 2 O 2 , O 2 · -or ·OH play important roles in signaling pathways (e.g. azzam et al 2012;tOgnetti et al 2012;kriSHnamurtHy & ratHinaSaBaPatHi 2013). At low levels, ROS can act as secondary messengers that transfer stress signals and facilitate responses to various environmental conditions or stress.…”

Section: Discussionmentioning

confidence: 99%

“…Ionizing radiation influences metabolism, ultrastructure, and the biology of organisms both directly and indirectly (kOvácS & kereSzteS 2002). The energy of ionizing radiation determines the extent of its impact on biological systems, leading to minor variations, severe damage or even to a cell death.…”

Section: Introductionmentioning

confidence: 99%

Tritium influence on morphology, reactive oxygen species production and catalase gene expression in Pseudendoclonium basilense and Stigeoclonium nanum (Chlorophyta)

Hašler¹,

Ondřej²,

Švécarová³

et al. 2017

Fottea

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Abstract:The response of two strains of Pseudendoclonium basilense viscHer and Stigeoclonium nanum (dillwyn) kützing to ionizing radiation was studied under laboratory conditions. Both strains were isolated as epiphytic from stagnant water bodies under ambient levels of ionizing radiation and cultivated under laboratory conditions on a gradient of tritiated water diluted in liquid Bold´s basal medium. Exposure to low doses of ionizing radiation stimulated changes in cell dimensions and morphology of in both strains and catalase gene expression in Pseudendoclonium basilense. Moreover, the addition of tritiated water stimulated production of reactive oxygen species in Pseudendoclonium basilense which concentration decreased after increased gene expression of catalase.

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“…but was rich in K-bearing minerals. Previous research showed that H 2 O 2 accumulation in specific tissues, and in appropriate quantities, was of benefit to plants and can mediate cross-tolerance toward stresses [4,17]. H 2 O 2 is widely recognised as a key signalling molecule in all eukaryotes [7].…”

Section: Discussionmentioning

confidence: 99%

A Global View of Gene Expression of Aspergillus nidulans on Responding to the Deficiency in Soluble Potassium

2015

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Many researchers have suggested that microbes can accelerate the weathering of silicate minerals. However, many genes and metabolic pathways related to microorganisms obtaining potassium (K) from silicate remain undiscovered. It is feasible to detect the gene expression within the scope of the whole genome through high-throughput sequencing. Surprisingly, only a few reports have shown fungal weathering of silicate using this technology. This study explored differences in gene expression of Aspergillus nidulans, which was cultured with different K sources, KCl, and K-feldspar. A. nidulans RNA was extracted by the construction of a cDNA library. Identification of K-acquisition-related genes with GO and KEGG pathway analysis revealed that primarily differentially expressed genes were related to the biosynthesis of amino acids. When these genes were grouped in accordance with the physiological functions, the genes involved in the synthesis of protease, ribosome, and mitochondria, trans-membrane transport, and oxidative phosphorylation were significantly different. Moreover, 20 genes selected were further tested using RT-qPCR. One half (10 genes) exhibited differential expression, which was consistent with the results of RNA-seq. Combining the results of RNA-seq and RT-qPCR, we summarised a possible way to obtain mineral K in A. nidulans as well. The differentially expressed genes and their associated metabolic pathways revealed will improve the understanding of the molecular mechanisms of microbial weathering of silicate minerals.

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Oxidative stress tolerance in plants

Cited by 92 publications

References 44 publications

Indole-3-acetic acid-induced oxidative burst and an increase in cytosolic calcium ion concentration in rice suspension culture

Indole-3-acetic acid-induced oxidative burst and an increase in cytosolic calcium ion concentration in rice suspension culture

Tritium influence on morphology, reactive oxygen species production and catalase gene expression in Pseudendoclonium basilense and Stigeoclonium nanum (Chlorophyta)

A Global View of Gene Expression of Aspergillus nidulans on Responding to the Deficiency in Soluble Potassium

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