Exogenous Glutathione-Mediated Drought Stress Tolerance in Rice (Oryza sativa L.) is Associated with Lower Oxidative Damage and Favorable Ionic Homeostasis

Sohag, Abdullah Al Mamun; Tahjib‐Ul‐Arif, Md.; Polash, Mohammed Arif Sadik; Chowdhury, Belal; Afrin, Sonya; Burritt, David J.; Murata, Yoshiyuki; Hossain, Mohammad Anwar; Hossain, Md. Arafat

doi:10.1007/s40995-020-00917-0

Cited by 45 publications

(32 citation statements)

References 80 publications

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“…On the other hand, depending on the concentration and ROS scavenging mechanism, H 2 O 2 can act as both a cell-damaging and signaling molecule [ 8 , 87 , 88 ]. Both MDA and H 2 O 2 produced as a by-product of metabolic pathways are responsible for lowering plant growth and development [ 89 ], which entirely supports our findings.…”

Section: Resultssupporting

confidence: 88%

Exogenous Putrescine Enhances Salt Tolerance and Ginsenosides Content in Korean Ginseng (Panax ginseng Meyer) Sprouts

Islam

Ryu

Azad

et al. 2021

Plants

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The effect of exogenously applied putrescine (Put) on salt stress tolerance was investigated in Panax ginseng. Thirty-day-old ginseng sprouts were grown in salinized nutrient solution (150 mM NaCl) for five days, while the control sprouts were grown in nutrients solution. Putrescine (0.3, 0.6, and 0.9 mM) was sprayed on the plants once at the onset of salinity treatment, whereas control plants were sprayed with water only. Ginseng seedlings tested under salinity exhibited reduced plant growth and biomass production, which was directly interlinked with reduced chlorophyll and chlorophyll fluorescence due to higher reactive oxygen species (hydrogen peroxide; H2O2) and lipid peroxidation (malondialdehyde; MDA) production. Application of Put enhanced accumulation of proline, total soluble carbohydrate, total soluble sugar and total soluble protein. At the same time, activities of antioxidant enzymes like superoxide dismutase, catalase, ascorbate peroxidase, guaiacol peroxidase in leaves, stems, and roots of ginseng seedlings were increased. Such modulation of physio-biochemical processes reduced the level of H2O2 and MDA, which indicates a successful adaptation of ginseng seedlings to salinity stress. Moreover, protopanaxadiol (PPD) ginsenosides enhanced by both salinity stress and exogenous Put treatment. On the other hand, protopanaxatriol (PPT) ginsenosides enhanced in roots and reduced in leaves and stems under salinity stress condition. In contrast, they enhanced by exogenous Put application in all parts of the plants for most cases, also evidenced by principal component analysis. Collectively, our findings provide an important prospect for the use of Put in modulating salinity tolerance and ginsenosides content in ginseng sprouts.

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Section: Resultssupporting

confidence: 88%

Exogenous Putrescine Enhances Salt Tolerance and Ginsenosides Content in Korean Ginseng (Panax ginseng Meyer) Sprouts

Islam

Ryu

Azad

et al. 2021

Plants

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“…Our result revealed that proline was rapidly accumulated by salt-exposed broad bean and subsequent increment of SP and FAA content except for SS to regulated the metabolic activity by maintaining osmotic homeostasis (Figure 2). Our findings is similar to the results obtained from the response dos salt stressed cucumber (Cucumis sativus L.) (Fan et al, 2012), Salvadora persica (Parida et al, 2016), maize (Fu et al, 2017) and rice (Wang et al, 2018), drought-stressed barley (Hordeum vulgare L.) (Bandurska et al, 2017;Dbira et al, 2018) and cold-stressed rice (Sohag et al, 2020b). However, the exogenous supply of BA significantly reduced the excess Pro produced under salt stress and improved plant growth (Figures 1, 2J-L).…”

Section: Discussionsupporting

confidence: 90%

Mitigation of salinity stress by exogenous application of cytokinin in faba bean (Vicia faba L.)

Latef

Hasanuzzaman

Tahjib‐Ul‐Arif

2021

Not Bot Horti Agrobo

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Soil salinity limits agricultural land use and crop productivity, thereby a major threat to global food safety. Plants treated with several phytohormones including cytokinins were recently proved as a powerful tool to enhance plant’s adaptation against various abiotic stresses. The current study was designed to investigate the potential role of 6-benzyladenine (BA) to improve broad bean (Vicia faba L.) salinity tolerance. The salt-stressed broad bean plantlets were classified into two groups, one of which was sprayed with water and another was sprayed with 200 ppm of BA. Foliar applications of BA to salt-exposed plants promoted the growth performance which was evidenced by enhanced root-shoot fresh and dry biomass. Reduced proline was strongly connected to the enhanced soluble proteins and free amino acids contents, protecting plant osmotic potential following BA treatment in salt-stressed broad bean. BA balanced entire mineral homeostasis and improved mineral absorption and translocation from roots to shoots, shoots to seeds and roots to seeds in salt-stressed plants. Excessive salt accumulation increased malondialdehyde level in leaves creating oxidative stress and disrupting cell membrane whereas BA supplementation reduced lipid peroxidation and improved oxidative defence. BA spray to salinity-stressed plants also compensated oxidative damage by boosting antioxidants defence mechanisms, as increased the enzymatic activity of superoxide dismutase, catalase, peroxidase and ascorbate peroxidase. Moreover, clustering heatmap and principal component analysis revealed that mineral imbalances, osmotic impairments and increased oxidative damage were the major contributors to salts toxicity, on the contrary, BA-augmented mineral homeostasis and higher antioxidant capacity were the reliable markers for creating salinity stress tolerance in broad bean. In conclusion, the exogenous application of BA alleviated the antagonistic effect of salinity and possessed broad bean to positively regulate the osmoprotectants, ion homeostasis, antioxidant activity and finally plant growth and yield, perhaps suggesting these easily-accessible and eco-friendly organic compounds could be powerful tools for the management of broad bean growth as well as the development of plant resiliency in saline prone soils.

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“…Water scarcity at cellular levels is a common phenomenon in abiotic stress [ 54 , 55 , 56 ], as also observed in “UVC1” and “UVC2” plants, evidenced by reduced RWC causing poor growth performance ( Figure 1 A). A similar result was also observed in dermaneh ( Artemisia sieberi ) plants under heat stress [ 57 ] and potato ( Solanum tuberosum ) plants under drought stress [ 58 ].…”

Section: Discussionmentioning

confidence: 87%

Mechanistic Insight of Allantoin in Protecting Tomato Plants Against Ultraviolet C Stress

Tahjib‐Ul‐Arif

Sohag

Latef

et al. 2020

Plants

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Allantoin ((AT) a purine metabolite)-mediated ultraviolet C (UVC) stress mitigation has not been studied to date. Here, we reported the physicochemical mechanisms of UVC-induced stress in tomato (Solanum lycopersicum L.) plants, including an AT-directed mitigation strategy. UVC stress reduced plant growth and photosynthetic pigments. Heatmap and principal component analysis (PCA) revealed that these toxic impacts were triggered by the greater oxidative damage and disruption of osmolyte homeostasis. However, pre-treatment of AT noticeably ameliorated the stress-induced toxicity as evident by enhanced chlorophyll, soluble protein, and soluble carbohydrate contents in AT-pretreated UVC-stressed plants relative to only stressed plants leading to the improvement of the plant growth and biomass. Moreover, AT pre-treatment enhanced endogenous AT and allantoate content, phenylalanine ammonia-lyase, non-enzymatic antioxidants, and the enzymatic antioxidants leading to reduced oxidative stress markers compared with only stressed plants, indicating the protective effect of AT against oxidative damage. Moreover, PCA displayed that the protective roles of AT strongly associate with the improved antioxidants. On the other hand, post-treatment of AT showed less efficacy in UVC stress mitigation relative to pre-treatment of AT. Overall, this finding illustrated that AT pre-treatment could be an effective way to counteract the UVC stress in tomato, and perhaps in other crop plants.

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Exogenous Glutathione-Mediated Drought Stress Tolerance in Rice (Oryza sativa L.) is Associated with Lower Oxidative Damage and Favorable Ionic Homeostasis

Cited by 45 publications

References 80 publications

Exogenous Putrescine Enhances Salt Tolerance and Ginsenosides Content in Korean Ginseng (Panax ginseng Meyer) Sprouts

Exogenous Putrescine Enhances Salt Tolerance and Ginsenosides Content in Korean Ginseng (Panax ginseng Meyer) Sprouts

Mitigation of salinity stress by exogenous application of cytokinin in faba bean (Vicia faba L.)

Mechanistic Insight of Allantoin in Protecting Tomato Plants Against Ultraviolet C Stress

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