Peroxisomes as redox-signaling nodes in intracellular communication and stress responses

Sandalio, Luisa M.; Peláez-Vico, María Ángeles; Molina‐Moya, Eliana; Romero‐Puertas, María C.

doi:10.1093/plphys/kiab060

Cited by 41 publications

(29 citation statements)

References 166 publications

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“…For example, these organelles have an oxidative metabolism characterized by high levels of hydrogen peroxide (H 2 O 2 ), as a ROS, but also by the presence of catalase (CAT), as an H 2 O 2 -scavenging enzyme [ 3 ]. Being highly dynamic structures, peroxisomes respond to environmental and cellular cues by changing their size, number, and proteomic content [ 1 , 4 ]. The proteomic content includes at least 200 proteins [ 5 ], imported from the cytosol to maintain and modulate peroxisomal functions [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Peroxisomal PEX7 Receptor Affects Cadmium-Induced ROS and Auxin Homeostasis in Arabidopsis Root System

et al. 2021

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Peroxisomes are important in plant physiological functions and stress responses. Through the production of reactive oxygen and nitrogen species (ROS and RNS), and antioxidant defense enzymes, peroxisomes control cellular redox homeostasis. Peroxin (PEX) proteins, such as PEX7 and PEX5, recognize peroxisome targeting signals (PTS1/PTS2) important for transporting proteins from cytosol to peroxisomal matrix. pex7-1 mutant displays reduced PTS2 protein import and altered peroxisomal metabolism. In this research we analyzed the role of PEX7 in the Arabidopsis thaliana root system exposed to 30 or 60 μM CdSO4. Cd uptake and translocation, indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA) levels, and reactive oxygen species (ROS) and reactive nitrogen species (RNS) levels and catalase activity were analyzed in pex7-1 mutant primary and lateral roots in comparison with the wild type (wt). The peroxisomal defect due to PEX7 mutation did not reduce Cd-uptake but reduced its translocation to the shoot and the root cell peroxisomal signal detected by 8-(4-Nitrophenyl) Bodipy (N-BODIPY) probe. The trend of nitric oxide (NO) and peroxynitrite in pex7-1 roots, exposed/not exposed to Cd, was as in wt, with the higher Cd-concentration inducing higher levels of these RNS. By contrast, PEX7 mutation caused changes in Cd-induced hydrogen peroxide (H2O2) and superoxide anion (O2●−) levels in the roots, delaying ROS-scavenging. Results show that PEX7 is involved in counteracting Cd toxicity in Arabidopsis root system by controlling ROS metabolism and affecting auxin levels. These results add further information to the important role of peroxisomes in plant responses to Cd.

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Section: Introductionmentioning

confidence: 99%

Peroxisomal PEX7 Receptor Affects Cadmium-Induced ROS and Auxin Homeostasis in Arabidopsis Root System

et al. 2021

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“…Plants contain numerous ROS-generating pathways associated with different organelles, which are intimately linked to metabolic pathways and to plant function and development. ROS production in chloroplasts and mitochondria is mainly dependent on photosynthetic electron transport and the mitochondrial electron transport chain ( Smirnoff and Arnaud, 2019 ); ROS production in peroxisomes has been recently reviewed by Sandalio et al (2021) .…”

Section: Ros Nitric Oxide and Redox Signals In Plant Responses To Stressmentioning

confidence: 99%

“…Reductive and oxidative mechanisms have been reported to be involved in NO biosynthesis in plants, although this process remains unclear (reviewed in Chamizo-Ampudia et al , 2016 ; Astier et al , 2018 ; León and Costa-Broseta, 2020 ). NO production has been reported in peroxisomes (reviewed in Sandalio et al , 2021 ), cytosol, mitochondria, and chloroplasts, although the mechanisms involved are not fully understood ( León and Costa-Broseta, 2020 ). NO is also produced in the plasma membrane and apoplast ( Stöhr et al , 2001 ; reviewed in León and Costa-Broseta, 2020 ).…”

Section: Ros Nitric Oxide and Redox Signals In Plant Responses To Stressmentioning

confidence: 99%

An update on redox signals in plant responses to biotic and abiotic stress crosstalk: insights from cadmium and fungal pathogen interactions

Romero‐Puertas

Terrón-Camero

Peláez-Vico

et al. 2021

Journal of Experimental Botany

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Complex signalling pathways are involved in plant protection against single and combined stresses. Plants are able to coordinate genome-wide transcriptional reprogramming and display a unique program of transcript responses to a combination of stresses which differ from single stresses. However, a significant overlap between pathways and some defence genes in the form of shared and general stress-responsive genes appears to be commonly involved in responses to multiple biotic and abiotic stresses. Reactive oxygen and nitrogen species (ROS/RNS), as well as redox signals, are key molecules involved at the crossroads of perceptions of different stress factors and regulation of both specific and general plant responses to biotic and abiotic stress. In this review, we focus on crosstalk between plant responses to biotic and abiotic stresses, in addition to possible plant protection against pathogens caused by previous abiotic stress. Bioinformatic analyses of transcriptome data from Cd- and fungal pathogen-treated plants focusing on redox gene ontology (GO) categories were carried out to gain a better understanding of common plant responses to abiotic and biotic stresses. The role of ROS and RNS in the complex network involved in plant responses to changes in their environment is also discussed.

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“…Можливо, що саме індукція посиленої лігніфікації клітинних стінок як захисного бар'єра проти поширення інфекції по рослині [12] зумовлює такий ефект ферулової кислоти. Сучасні погляди на генетичний потенціал стійкості пшениці до борошнистої роси та механізми функціонування внутрішньоклітинного сигналінгу за біотичного стресу значно розширюються [13][14][15]. Роль пероксиду водню як месенджера при цьому зростає, а дія біотичних еліситорів дозволяє змінити стратегії захисту рослин для активації комплексної неспецифічної стійкості.…”

Section: результати та обговоренняunclassified

The activation of wheat resistance against powdery mildew by combination of biotic elicitor and NO donor

Zhuk¹,

Shylina²,

Dmytriev³

2021

Fakt. eksp. evol. org.

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Aim. The aim of research was to analyze the activation of Triticum aestivum L. non-specific resistance by the effect of ferulic acid and NO on H2O2 content against fungal pathogen from environment in field trials. Methods. Content of endogenous H2O2 was measured in elicitor treated and infected wheat plants (cv. Oberig myronivskij and Svitanok myronivskij) during different ontogenesis phases. The extent of disease development, morphometric parameters and yield structure were analyzed. Results. The data obtained suggest that different levels of endogenous hydrogen peroxide were induced in wheat leaves by treatment. The growth and yield were stimulated. The infection damage decreased. Conclusions. The role of endogenous hydrogen peroxide is crucial for wheat defense during all vegetation period. The elicitor and donor NO induced effective defense responses and resistance in winter wheat against Erysiphe graminis. Keywords: Triticum aestivum L., ferulic acid, NO, induced resistance, powdery mildew.

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Peroxisomes as redox-signaling nodes in intracellular communication and stress responses

Abstract: Peroxisomes are redox nodes playing a diverse range of roles in cell functionality and in the perception of and responses to changes in their environment.

Cited by 41 publications

References 166 publications

Peroxisomal PEX7 Receptor Affects Cadmium-Induced ROS and Auxin Homeostasis in Arabidopsis Root System

Peroxisomal PEX7 Receptor Affects Cadmium-Induced ROS and Auxin Homeostasis in Arabidopsis Root System

An update on redox signals in plant responses to biotic and abiotic stress crosstalk: insights from cadmium and fungal pathogen interactions

The activation of wheat resistance against powdery mildew by combination of biotic elicitor and NO donor

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