Comparison of some physiological aspects of drought stress resistance in two ground cover genus

Tatari, Maryam; Ghazvini, Reza Fotouhi; Mousavi, Asghar; Babaei, Ghobad

doi:10.1080/01904167.2017.1346117

Cited by 4 publications

(7 citation statements)

References 51 publications

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“…Similar results concerning the increased activity of APX under abiotic stress conditions have been reported in different plants [33][34][35][36][37][38]. High activity of APX can decrease the ROS levels and increase the resistance to oxidative stress, and reduced activity of this enzyme can cause the lower plant cold tolerance [31,39].…”

Section: Discussionsupporting

confidence: 80%

“…They inhibit formation of more toxic ROS and have a critical function in intracellular H 2 O 2 signaling [30]. The initial activity of SOD gives rise to the production of H 2 O 2 ; then CAT and other enzymes begin to remove H 2 O 2 [31]. In the present study, genotypes with relatively high CAT activity accumulated less H 2 O 2 and vice versa.…”

Section: Discussionsupporting

confidence: 49%

“…However, it decreased under SS compared to MS in all genotypes, except for ILC533 and FLIP 06-173C. In some other reports by other workers, a decreased GPX activity under cold stress was also found [26,31,32]. It can be concluded that GPX activity was more affected by cold stress in comparison to that of CAT.…”

Section: Discussionmentioning

confidence: 49%

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Influence of long-term cold stress on enzymatic antioxidative defense system in chickpea (Cicer arietinum L.)

Yousefi¹,

Ahmadi²,

Sadeghzadeh-Ahari³

et al. 2018

Acta Agrobot

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Abiotic stresses such as cold, heat, and drought are the main causes of universal crop losses. Plants have generated adaptive responses which prevent them from oxidative damage caused by environmental stresses. The present research aimed to evaluate the effect of cold stress on lipid peroxidation and antioxidant enzyme activity in the leaves of eight cultivars / advanced lines of chickpea (<em>Cicer arietinum</em> L.). Three-week-old plantlets were subjected to cold stress (0°C) for 24 or 48 hours. Selected antioxidant enzyme activity and oxidative status of chickpea plantlets under cold stress were determined. In most genotypes, catalase and ascorbate peroxidase activities were increased and guaiacol peroxidase activity decreased under stress conditions but the activity of superoxide dismutase remained almost constant. Based on its ranking, <em>Cicer arietinum</em> ‘Saral’, a newly released cold-resistant Iranian chickpea cultivar, had the strongest, and FLIP 05-77C had the weakest antioxidative defense system under low temperature stress.

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Section: Discussionsupporting

confidence: 80%

Section: Discussionsupporting

confidence: 49%

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Influence of long-term cold stress on enzymatic antioxidative defense system in chickpea (Cicer arietinum L.)

Yousefi¹,

Ahmadi²,

Sadeghzadeh-Ahari³

et al. 2018

Acta Agrobot

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“…The photosynthesis, stomatal conductance, Rubisco activity, and nitrogen content of Kentucky bluegrass were severely disrupted by drought conditions [91,92]. It was reported that the activities of APX, peroxidase (POD) and glutathione peroxidase (GPX) in Kentucky bluegrass increased and then decreased with drought stress, but in desert wheatgrass (Agropyron desertorum) a continuous increase in activity of these enzymes was detected [93]. Generally, antioxidant enzymes play a protective role in plant stress response, and after long-term drought stress treatment, antioxidant activity including that of APX, CAT and SOD significantly decreased in turfgrass, implying a decrease in the capacity to scavenge ROS [94].…”

Section: Drought Stressmentioning

confidence: 99%

“…These are protective strategies of the plant against unfavorable conditions, but there is a threshold to these changes. For example, the activities of antioxidant enzymes would decrease with prolonging of stress treatments [93].…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Mechanisms of Environmental Stress Tolerance in Turfgrass

et al. 2020

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Turfgrasses constitute a vital part of the landscape ecological systems for sports fields, golf courses, home lawns and parks. However, turfgrass species are affected by numerous abiotic stresses include salinity, heat, cold, drought, waterlogging and heavy metals and biotic stresses such as diseases and pests. Harsh environmental conditions may result in growth inhibition, damage in cell structure and metabolic dysfunction. Hence, to survive the capricious environment, turfgrass species have evolved various adaptive strategies. For example, they can expel phytotoxic matters; increase activities of stress response related enzymes and regulate expression of the genes. Simultaneously, some phytohormones and signal molecules can be exploited to improve the stress tolerance in turfgrass. Generally, the mechanisms of the adaptive strategies are integrated but not necessarily the same. Recently, metabolomic, proteomic and transcriptomic analyses have revealed plenty of stress response related metabolites, proteins and genes in turfgrass. Therefore, the regulation mechanism of turfgrass’s response to abiotic and biotic stresses was further understood. However, the specific or broad-spectrum related genes that may improve stress tolerance remain to be further identified. Understanding stress response in turfgrass species will contribute to improve stress tolerance of turfgrass.

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Low Temperature Effect on Different Varieties of Corchorus capsularis and Corchorus olitorius at Seedling Stage

et al. 2021

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To address the demand for natural fibers, developing new varieties that are resistant to abiotic stress is necessary. The present study was designed to investigate the physiological and biochemical traits of three varieties of C. capularis (Y49, Y38, and Y1) and four varieties C. olitorius (T8, W57, M33, M18) under low temperature to identify the cold-tolerant varieties and elucidate the mechanisms involved in enhancing cold tolerance. Research findings revealed that the varieties Y49 and M33 exhibited the highest chlorophyll and carotenoid content. Biochemical profiles revealed that varieties Y49 and M33 were found to be able to withstand low-temperature stress by accumulating different enzymatic and non-enzymatic antioxidants, such as superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbate peroxidase (APx), glutathione (GSH), and phenolics, which participated in reducing the content of malondialdehyde (MDA) and hydrogen peroxide (H2O2) caused by low temperature. Osmolytes compounds, such as total soluble sugar, significantly increased in Y49 and M33; and proline content decreased in all varieties except Y49 and M33 after low-temperature exposure. The rise in these osmolytes molecules can be a defense mechanism for the jute’s osmotic readjustment to reduce the oxidative damage induced by low temperature. Furthermore, PCA and hierarchical cluster analysis distinguished the seven varieties into three separate groups. Results confirmed that group I (Y49 and M33 varieties) were low-temperature tolerant, group II (M18, W57) were intermediate, whereas III groups (Y38, T8, and Y1) were low temperature susceptible. PCA also explained 85.72% of the variance of raw data and clearly distinguished three groups that are similar to the cluster heat map. The study thus confirmed the tolerance of selected varieties that might be an efficient adaptation strategy and utilized them for establishing breeding programs for cold tolerance.

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Comparison of some physiological aspects of drought stress resistance in two ground cover genus

Cited by 4 publications

References 51 publications

Influence of long-term cold stress on enzymatic antioxidative defense system in chickpea (Cicer arietinum L.)

Influence of long-term cold stress on enzymatic antioxidative defense system in chickpea (Cicer arietinum L.)

Mechanisms of Environmental Stress Tolerance in Turfgrass

Low Temperature Effect on Different Varieties of Corchorus capsularis and Corchorus olitorius at Seedling Stage

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