Production Sites of Reactive Oxygen Species (ROS) in Organelles from Plant Cells

Corpas, Francisco J.; Gupta, Dharmendra K.; Palma, José M.

doi:10.1007/978-3-319-20421-5_1

Cited by 64 publications

(44 citation statements)

References 105 publications

(118 reference statements)

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“…These highly reactive compounds, all derived from O 2 , can be very noxious when above their threshold in cells (Sytar et al , Soares et al ). Under normal conditions, ROS are produced as a by‐product of many metabolic pathways, such as the electron transport chain (ETC) in chloroplasts and mitochondria (Corpas et al ). However, upon exposure to unfavorable conditions, like metal toxicity, the increased content of ROS can disturb the normal equilibrium of cells and cause oxidative stress in plants.…”

Section: No‐mediated Regulation Of Metal‐induced Oxidative Stressmentioning

confidence: 99%

Nitric oxide‐mediated regulation of oxidative stress in plants under metal stress: a review on molecular and biochemical aspects

Sharma

Soares

Sousa

et al. 2019

Physiologia Plantarum

122

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Given their sessile nature, plants continuously face unfavorable conditions throughout their life cycle, including water scarcity, extreme temperatures and soil pollution. Among all, metal(loid)s are one of the main classes of contaminants worldwide, posing a serious threat to plant growth and development. When in excess, metals which include both essential and non‐essential elements, quickly become phytotoxic, inducing the occurrence of oxidative stress. In this way, in order to ensure food production and safety, attempts to enhance plant tolerance to metal(loid)s are urgently needed. Nitric oxide (NO) is recognized as a signaling molecule, highly involved in multiple physiological events, like the response of plants to abiotic stress. Thus, substantial efforts have been made to assess NO potential in alleviating metal‐induced oxidative stress in plants. In this review, an updated overview of NO‐mediated protection against metal toxicity is provided. After carefully reviewing NO biosynthetic pathways, focus was given to the interaction between NO and the redox homeostasis followed by photosynthetic performance of plants under metal excess.

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Section: No‐mediated Regulation Of Metal‐induced Oxidative Stressmentioning

confidence: 99%

Nitric oxide‐mediated regulation of oxidative stress in plants under metal stress: a review on molecular and biochemical aspects

Sharma

Soares

Sousa

et al. 2019

Physiologia Plantarum

122

View full text Add to dashboard Cite

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“…After the dismutation reaction of O2 •catalyzed by SOD, the accumulation of H2O2 is commonly observed. During the steady state, the content of H2O2 in chloroplast is usually up to 0.5 µM and it is elevated to 1 -1.5 µM under stresses (Corpas et al 2015). H2O2 is a moderately active ROS with 2 to 4 µs half-life.…”

Section: Discussionmentioning

confidence: 99%

Di-n-butyl phthalate-induced phytotoxicity in Hordeum vulgare seedlings and subsequent antioxidant defense response

Kumari¹,

Kaur²

2020

Biol. plant.

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Di-n-butyl phthalate (DBP) is one of the frequently detected phthalates in environmental samples. The effects of phthalates are extensively studied in the animals but the effects on plants are scarce. Therefore, the present study is aimed to envisage the effects of DBP on the antioxidative defense system in Hordeum vulgare L. seedlings grown under laboratory conditions for 7 d. The activities of different antioxidative enzymes were enhanced in the shoots. In the roots, the activity of guaiacol peroxidase increased and the catalase activity decreased initially but increased at higher DBP concentrations, whereas the activities of superoxide dismutase, ascorbate peroxidase, and glutathione reductase declined. Furthermore, the content of polyphenols elevated after exposure of seedlings to DBP. The possible reason for these responses of barley seedlings is the oxidative burst, i.e., enhanced production of reactive oxygen species, which were confirmed using confocal microscopy in terms of loss in plasma membrane integrity. DBP also disturbed the normal stomatal morphology of barley seedlings. The study may help to provide insights into the defense of crop plants against phthalate stress.

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“…The microbes are identifi ed by means of representative pathogen-associated molecular patterns, or PAMPs (Macho and Zipfel 2014 ). This is followed by the induction of PR genes and an outburst of reactive oxygen species, or ROS (Corpas et al 2015 ). These mechanisms lead to the ability of plants to effectively defend themselves against a microbial attack.…”

Section: Chemical Signalsmentioning

confidence: 99%

Plant-Microbe Interactions: A Molecular Approach

Babar

Khan

Zargaham

et al. 2016

Plant, Soil and Microbes

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Plants thrive in a complex environment comprising of various biotic and abiotic agents. Like all biological systems, these agents tend to interact with the plant body. Microorganisms form a major portion of the ecosystem and have been found to inoculate or infect members of all the kingdoms. Plants and microbes have developed molecular mechanisms to interact with one another and attain the maximum benefi t from the interactions. This mutualistic relationship provides benefi t not only to the microbes but also to the plants. Based upon this complex molecular interplay, a number of mechanisms have been studied and are currently being employed for the agricultural, environmental, and health benefi ts. The principles of biofertilization and bioremediation utilize the plant-microbe interactions for the survival of the two players along with contributing to the food chain and the ecosystem. Similarly, the secondary metabolites obtained from these organisms contribute to human medical and agricultural welfare. These processes are regulated by a variety of biological, physical, chemical, and environmental factors, the study of which can be helpful in exploiting better outcomes from the interaction. The advent of modern techniques has helped in deciphering the role of various molecular players of the plant-microbe interactions. Moreover, they can be employed for regulating the plant-microbe interaction for improved effi ciency. The current chapter discusses the molecular mechanisms involved in the plant-microbe interactions exhibited in biofertilization, bioremediation, biocontrol, and induced systemic resistance. Afterwards, the factors affecting the molecular machinery involved in these pathways have been discussed. Toward the end, a brief introduction of the genetic 2 manipulative techniques and their applications in the plant-microbe interactions has been presented.

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Production Sites of Reactive Oxygen Species (ROS) in Organelles from Plant Cells

Cited by 64 publications

References 105 publications

Nitric oxide‐mediated regulation of oxidative stress in plants under metal stress: a review on molecular and biochemical aspects

Nitric oxide‐mediated regulation of oxidative stress in plants under metal stress: a review on molecular and biochemical aspects

Di-n-butyl phthalate-induced phytotoxicity in Hordeum vulgare seedlings and subsequent antioxidant defense response

Plant-Microbe Interactions: A Molecular Approach

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