Antioxidant Molecules and Enzymes and Their Relevance to the Salt Adaptation of Halophytes

Hamed, Karim Ben; Dabbous, Amira; Souid, Ayman; Abdelly, Chédly

doi:10.1007/978-3-030-17854-3_48-1

Cited by 6 publications

(3 citation statements)

References 68 publications

(86 reference statements)

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“…However, under salt stress, Arabidopsis produced a higher H 2 O 2 level than T. salsuginea ( Wiciarz et al., 2015 ). The similar results were observed in chloroplasts of two tomato cultivars with different salt tolerance ( Ben Hamed et al., 2020 ). The higher H 2 O 2 levels in halophytes under stress-free conditions may keep antioxidant system in the activated state, and serve as a signal for adaptive responses, and this phenomenon may indicate that the halophytes are pre-adapted to stress.…”

Section: Chloroplast Sensitivity To Salt Stresssupporting

confidence: 81%

Sensitivity and responses of chloroplasts to salt stress in plants

Wang,

Chen,

Sui

2024

Front. Plant Sci.

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Chloroplast, the site for photosynthesis and various biochemical reactions, is subject to many environmental stresses including salt stress, which affects chloroplast structure, photosynthetic processes, osmotic balance, ROS homeostasis, and so on. The maintenance of normal chloroplast function is essential for the survival of plants. Plants have developed different mechanisms to cope with salt-induced toxicity on chloroplasts to ensure the normal function of chloroplasts. The salt tolerance mechanism is complex and varies with plant species, so many aspects of these mechanisms are not entirely clear yet. In this review, we explore the effect of salinity on chloroplast structure and function, and discuss the adaptive mechanisms by which chloroplasts respond to salt stress. Understanding the sensitivity and responses of chloroplasts to salt stress will help us understand the important role of chloroplasts in plant salt stress adaptation and lay the foundation for enhancing plant salt tolerance.

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Section: Chloroplast Sensitivity To Salt Stresssupporting

confidence: 81%

Sensitivity and responses of chloroplasts to salt stress in plants

Wang,

Chen,

Sui

2024

Front. Plant Sci.

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“…The antioxidant system's role in weed interference and herbicide treatment of crops and weeds has been the subject of research and is regarded as a crucial metabolic reaction of herbicides against weeds [37,38]. An additional biochemical herbicide strategy includes catalase (CAT), mono-dehydroascorbate reductase (MDA), peroxidase (POD), superoxide dismutase (SOD), guaIacol peroxidase (GPX), and glutathione reductase (GSH) activity on weeds [39,40] .…”

Section: Biochemical Action Of Herbicidesmentioning

confidence: 99%

Insightful Review of Bioherbicides Derived From Plants (Phyto-Herbicides)

Ammar,

Elmasry,

Ghosh

et al. 2023

J. Chil. Chem. Soc.

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Weed control during crop cultivation with integrated management remains a challenge. Bioherbicides such as plant extracts, allelochemicals, and microbes, are alternatives for weed control in sustainable agriculture. There are a few studies on the physiological influence of plant and microbial biopesticides on the germination and growth of weeds. Weed seed germination or growth is hindered when plant metabolites or extracts are absorbed, damaging the cell membrane, DNA, mitosis, amylase activity, and other biochemical processes. Weed growth is slowed by decreased rates of root-cell division, food absorption, photosynthetic pigment synthesis, and plant growth hormone synthesis, while the production of reactive oxygen species, stress-mediated hormones, and erratic antioxidant activity is increased. Bacterially produced lytic enzymes and toxins degrade the endosperm and utilize it for survival, preventing the growth of weed seeds.Forty-six plant species were assessed as phytoherbicides against 43 weeds, belonging to 19 families and 42 genera. Lamiaceae was the most represented family (21.7%) due to their volatile oils and phytotoxic substances, which eliminate weed growth. Thymus, Eucalyptus and Pinus were the most represented genera. Thirteen species' oils (38 %) and 21 species' extracts (62 %) were used as herbicides. This review provides an overview of the physiological alterations on undesired weeds by using phytoherbicides, which is of the least studied eco herbicides, for sustainable agriculture outlined in the Sustainable Development Strategy 2030.

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“…However, in addition to the osmotic and toxic effects, salt stress also induces an oxidative stress both at short and long terms (Hernández and Almansa 2002;Hernández et al, 2000;Acosta-Motos et al, 2015;Ellouzi et al, 2011). In order to optimal growth under high saline conditions, salt-tolerant plants, such as halophytes, have developed a series of adaptations, including morphologic, anatomical and biochemical adaptations, (Flowers and Colmer, 2008), the latter comprising ion homeostasis, regulation of osmolytes accumulation and, most importantly, upregulation of antioxidative defences (Ozgur et al, 2013;Bose et al, 2014, Ben Hamed et al, 2020.…”

Section: Responses Of Halophytes To Salinity Under Mediterranean Envi...mentioning

confidence: 99%

Halophyte based Mediterranean agriculture in the contexts of food insecurity and global climate change

Hamed

Castagna

Ranieri

et al. 2021

Environmental and Experimental Botany

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Antioxidant Molecules and Enzymes and Their Relevance to the Salt Adaptation of Halophytes

Abstract: responses that involve antioxidant enzymes and molecules, rather than isolated responses of these antioxidants to salt stress.

Cited by 6 publications

References 68 publications

Sensitivity and responses of chloroplasts to salt stress in plants

Sensitivity and responses of chloroplasts to salt stress in plants

Insightful Review of Bioherbicides Derived From Plants (Phyto-Herbicides)

Halophyte based Mediterranean agriculture in the contexts of food insecurity and global climate change

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