24-Epibrassinolide promotes arsenic tolerance in Arabidopsis thaliana L. by altering stress responses at biochemical and molecular level

Surgun-Acar, Yonca; Zemheri‐Navruz, Fahriye

doi:10.1016/j.jplph.2019.05.002

Cited by 33 publications

(5 citation statements)

References 69 publications

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“…Mutations in the oxidation sites in the proteins aforementioned such as BZR1 and BES1, or a reduction in endogenous ROS content can significantly impair the functions of BZR1 and BES1 in regulating gene expression and various biological processes, including QC cell division in the roots (Vilarrasa-Blasi et al, 2014;Yang et al, 2018;Surgun-Acar and Zemheri-Navruz, 2019). Furthermore, Vilarrasa-Blasi et al 2014indicated that the BRAVO/BES1 signaling model, rather than BZR1, plays a role in BR-mediated stem cell quiescence regulation in plants.…”

Section: •−mentioning

confidence: 99%

“…(2018) have reported the redox regulation of brassinosteroid (BR) signals, and this process is related to ROS-induced protein modification. BRs induce the generation of H 2 O 2 in the root meristem, particularly in the root stem cell niche, in a BRASSINOSTEROID INSENSITIVE 1 (BRI1)-dependent manner, and this is required for BRs to promote QC cell division ( Yang et al., 2018 ; Surgun-Acar and Zemheri-Navruz, 2019 ). In-vitro and in-vivo studies have confirmed that cys-63 and cys-84 residues are the conserved oxidization sites in BRASSINAZOLE-RESISTANT 1 (BZR1) and BRI1-EMS-SUPPRESSOR 1 (BES1), respectively ( Tian et al., 2018 ).…”

Section: Ros Are Key Regulators Of Root Stem Cell Niche Maintenancementioning

confidence: 99%

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Modulatory Role of Reactive Oxygen Species in Root Development in Model Plant of Arabidopsis thaliana

Zhou

et al. 2020

Front. Plant Sci.

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Reactive oxygen species (ROS), a type of oxygen monoelectronic reduction product, have a higher chemical activity than O 2. Although ROS pose potential risks to all organisms via inducing oxidative stress, indispensable role of ROS in individual development cannot be ignored. Among them, the role of ROS in the model plant Arabidopsis thaliana is deeply studied. Mounting evidence suggests that ROS are essential for root and root hair development. In the present review, we provide an updated perspective on the latest research progress pertaining to the role of ROS in the precise regulation of root stem cell maintenance and differentiation, redox regulation of the cell cycle, and root hair initiation during root growth. Among the different types of ROS, O 2 •− and H 2 O 2 have been extensively investigated, and they exhibit different gradient distributions in the roots. The concentration of O 2 •− decreases along a gradient from the meristem to the transition zone and the concentration of H 2 O 2 decreases along a gradient from the differentiation zone to the elongation zone. These gradients are regulated by peroxidases, which are modulated by the UPBEAT1 (UPB1) transcription factor. In addition, multiple transcriptional factors, such as APP1, ABO8, PHB3, and RITF1, which are involved in the brassinolide signaling pathway, converge as a ROS signal to regulate root stem cell maintenance. Furthermore, superoxide anions (O 2 •−) are generated from the oxidation in mitochondria, ROS produced during plasmid metabolism, H 2 O 2 produced in apoplasts, and catalysis of respiratory burst oxidase homolog (RBOH) in the cell membrane. Furthermore, ROS can act as a signal to regulate redox status, which regulates the expression of the cell-cycle components CYC2;3, CYCB1;1, and retinoblastoma-related protein, thereby controlling the cell-cycle progression. In the root maturation zone, the epidermal cells located in the H cell position emerge to form hair cells, and plant hormones, such as auxin and ethylene regulate root hair formation via ROS. Furthermore, ROS accumulation can influence hormone signal transduction and vice versa. Data about the association between nutrient stress and ROS signals in root hair development are scarce. However, the fact that ROBHC/RHD2 or RHD6 is specifically expressed in root hair cells and induced by nutrients, may explain the relationship. Future studies should focus on the regulatory

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Section: •−mentioning

confidence: 99%

Section: Ros Are Key Regulators Of Root Stem Cell Niche Maintenancementioning

confidence: 99%

Modulatory Role of Reactive Oxygen Species in Root Development in Model Plant of Arabidopsis thaliana

Zhou

et al. 2020

Front. Plant Sci.

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“…Arsenic toxicity is known to affect plants both morphologically and molecularly. Some studies previously revealed that As induces the generation of ROS in different plants (Kanwar et al 2015;Marsa et al 2015;Surgun-Acar 2019;Surgun-Acar Y & Zemheri-Navruz 2019). The excessive presence of ROS can cause the non-specific oxidation of organic compounds such as lipids, proteins, and carbohydrates in addition to generating steady-state levels of unpaired cellular DNA damage (Gill & Tuteja 2010).…”

Section: Discussionmentioning

confidence: 99%

Estimation of arsenic-induced genotoxicity in melon (Cucumis melo) by using RAPD-PCR and comet assays

Surgun-Acar

2021

Bot Serb

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In this study, arsenic (As)-induced genotoxicity in the roots and shoots of Cucumis melo (melon) seedlings were investigated by using the random amplified polymorphic DNA - polymerase chain reaction (RAPD-PCR) and comet assays. For this purpose, melon seedlings were exposed to arsenate [As(V)] at 0, 100, 200, 300, and 400 ?M concentrations in the hydroponic system for 14 days to examine the level of As accumulation, alterations in growth parameters, and DNA damage. A reduction in growth with increasing As(V) concentration was observed in the melon seedlings. Total As accumulations in the shoot and root tissue increased in a dose-dependent manner; however, the level was higher in the roots than the shoots. In RAPD-PCR analysis, 26 primers gave reproducible and scorable results and produced a total of 128 bands in the control seedlings. Alterations in RAPD profiles, including the loss or appearance of new bands, were determined in the As-treated seedlings when compared to the control. The values of genomic template stability (GTS) were decreased by increasing the concentration of the As(V) in both tissue types. DNA strand breaks were observed in all the tested As(V) concentrations in the alkaline comet assay; furthermore, the loss of DNA integrity was higher with 300 and 400 ?M As(V) treatments. The results clearly indicate that the combination of DNA-based molecular and cytogenetic techniques (e.g. the comet assay) may be proposed as a reliable evaluation of genotoxicity in plants after exposure to heavy metal pollution.

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“…Additionally, As(V) was found to modulate the enzymatic activities within peroxisomes, including the inhibition of glycolate oxidase and hydroxypyruvate, as well as catalase inhibition promoting the formation of lateral roots in comparison to primary roots [ 68 ]. A previous study using RNA-seq analysis in Arabidopsis under As stress revealed genes in response to stress such as Catalase-encoding enzymes; CAT1, CAT2, and CAT3 genes; heat-shock proteins encoding genes; Hsp70-4 and Hsp90-1 as well as proline biosynthesis-related genes; P5CS1 and P5CS2 in rosette leaves [ 73 ]. Further, ten differentially expressed TaCAT genes in T. aestivum under As stress were identified, which is related to reducing the excessive ROS produced by As exposure [ 74 ].…”

Section: Mechanisms For Arsenic Perception and Signalingmentioning

confidence: 99%

From genes to ecosystems: Decoding plant tolerance mechanisms to arsenic stress

Gracia-Rodriguez,

Lopez-Ortiz,

Flores-Iga

et al. 2024

Heliyon

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24-Epibrassinolide promotes arsenic tolerance in Arabidopsis thaliana L. by altering stress responses at biochemical and molecular level

Cited by 33 publications

References 69 publications

Modulatory Role of Reactive Oxygen Species in Root Development in Model Plant of Arabidopsis thaliana

Modulatory Role of Reactive Oxygen Species in Root Development in Model Plant of Arabidopsis thaliana

Estimation of arsenic-induced genotoxicity in melon (Cucumis melo) by using RAPD-PCR and comet assays

From genes to ecosystems: Decoding plant tolerance mechanisms to arsenic stress

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