Salt-Induced Changes in Physio-Biochemical and Antioxidant Defense System
in Mustard Genotypes

Hossain, Md. Shakhawat; Hossain, Mohammad Sajjad; Hannan, Abdul; Hasanuzzaman, Mirza; Rohman, Md. Motiar

doi:10.32604/phyton.2020.010279

Cited by 3 publications

(2 citation statements)

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“…However, accumulation of ROS results in extensive damage to plants and the activities of SOD, CAT and POD, which are considered key enzymes in ROS scavenging and are of great relevance to abiotic stress (Hossain et al, 2020;Li et al, 2015;Sheikh et al, 2017). Consistent with the results of ROS level measurements, the activities of SOD, POD and CAT were significantly enhanced under abiotic stress.…”

Section: Discussionsupporting

confidence: 73%

“…In this study, MDA content significantly increased with increasing drought, salinity and saline-alkaline concentrations (Figures 1a,2a and 3a). The effects of drought, salinity and mixed saline-alkaline stresses produce reactive oxygen species (ROS) such as O 2 -1 and H 2 O 2 that lead to lipid peroxidation and, consequently, an increase in the MDA content (Hossain et al, 2020;Sheikh et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

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Seed germination and biochemical responses of two Elytrigia elongata accessions exposed to abiotic stresses

et al. 2021

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Elytrigia elongata, a rhizomatous and sparse-type perennial herb of the Triticeae tribe, with stronger drought and salt tolerance, is an important wild genetic resource for wheat variety improvement. However, no precise information about seed germination and biochemical responses of this species to drought, salinity and mixed saline-alkaline stresses is available. Hence, this experiment was conducted to investigate the effects of three abiotic stresses on seed germination and physiological characteristics of two E. elongata accessions. The results showed that drought and mixed saline-alkaline stresses impair seed germination and bud seedling growth of E. elongata. However, seed germination and bud seedling growth were promoted by 50 mmol/L, but inhibited by 100-200 mmol/L salinity treatments. The malondialdehyde (MDA) content was increased and the activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) in the bud seedlings were significantly increased (p <.05) with increasing osmotic stress from 0 to −0.4 MPa, and salinity and mixed saline-alkaline from 0 to 150 mmol/L, but reduced at −0.75 MPa osmotic stress and 200 mmol/L salinity and mixed saline-alkaline stresses. Under the same salinity and mixed saline-alkaline treatment, the activities of SOD and CAT of EE030 were higher than those of EE024 except in 200 mmol/L salinity treatment; however, the MDA content of EE030 was lower than that of EE024, except in 150 mmol/L salinity treatment. In conclusion, the results of this study demonstrated that E. elongata seeds are more tolerant to salinity stress than to drought and mixed saline-alkaline stresses, and EE030 seed are more tolerant to three abiotic stresses than are the seeds of EE024.

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Section: Discussionsupporting

confidence: 73%

Section: Discussionmentioning

confidence: 99%

Seed germination and biochemical responses of two Elytrigia elongata accessions exposed to abiotic stresses

et al. 2021

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Two Arbuscular Mycorrhizal Fungi Alleviates Drought Stress and Improves Plant Growth in Cinnamomum migao Seedlings

et al. 2021

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Cinnamomum migao plants often face different degrees of drought in karst habitats, which can lead to plants' death, especially in the seedling stage. Widespread of arbuscular mycorrhizal (AM) fungi in karst soils have the potential to address this drought, which is a threat to C. migao seedlings. We inoculated C. migao seedlings with spores from Glomus lamellosum and Glomus etunicatum, two AM fungi widely distributed in karst soils, to observe seedling growth response after simulated drought. Our results showed that 40 g of G. lamellosum and G. etunicatum significantly promoted the growth of C. migao seedlings, 120 days after inoculation. Following a 15-day drought treatment, root colonization of the seedlings with G. lamellosum or G. etunicatum had lower the accumulation of malondialdehyde (MDA) and increased the accumulation of enzymes and osmotic substances in the seedlings. The relative water content in different organs (roots, stems, and leaves) of the drought-stressed seedlings was higher in plants with G. lamellosum or G. etunicatum than in plants without AM fungi colonization. Our results showed that inoculation with AM fungi was an effective means to improve the drought resistance of C. migao seedlings.

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Oilseed Brassica Responses and Tolerance to Salt Stress

Raihan¹,

Nowroz²,

Siddika³

et al. 2023

Oilseed Crops - Uses, Biology and Production

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Salinity interrupts osmoregulation, hinders water uptake, reduces water content, causes ionic toxicity, reduces chlorophyll content, alters stomatal conductance/movement, decreases enzymatic activity, alters transpiration and photosynthesis, disrupts the antioxidant defense system, and results in the oxidative burst. In turn, seed and oil yield is greatly declined. To overcome salinity-induced osmotic and ionic stress, plants evolve avoidance or tolerance mechanisms in order to protect the cellular components from sustaining growth and development. Ion homeostasis, vacuolar compartmentalization, accumulation of secondary metabolites, hormonal regulation, osmolytes production and by activating defensive responses, plants endure the salinity-induced damages, and enhance the stress tolerance. However, these salt-tolerant traits are greatly varied with species and genotypes as well as the extent of salt stress. Therefore, precise studies in understanding the physiology and molecular biology of stress are important to understand Brassica oilseed crops’ responses and tolerance to salt stress. In this chapter, we summarize the recent findings on the Brassica plants’ response to salt stress and later discuss the possible ways to enhance salt stress tolerance.

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Salt-Induced Changes in Physio-Biochemical and Antioxidant Defense System in Mustard Genotypes

Cited by 3 publications

References 37 publications

Seed germination and biochemical responses of two Elytrigia elongata accessions exposed to abiotic stresses

Seed germination and biochemical responses of two Elytrigia elongata accessions exposed to abiotic stresses

Two Arbuscular Mycorrhizal Fungi Alleviates Drought Stress and Improves Plant Growth in Cinnamomum migao Seedlings

Oilseed Brassica Responses and Tolerance to Salt Stress

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