Abscisic acid primes rice seedlings for enhanced tolerance to alkaline stress by upregulating antioxidant defense and stress tolerance-related genes

Liu, Xiaolong; Zhang, Hui; Jin, Yihan; Wang, Mingming; Yang, Haoyu; Ma, Hongling; Jiang, Chang‐Jie; Liang, Zhengwei

doi:10.1007/s11104-019-03992-4

Cited by 63 publications

(50 citation statements)

References 83 publications

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“…Rice seeds primed with ABA exhibited enhanced seedling growth and yield in saline soil by balancing nutrient uptake [ 103 , 104 , 105 , 106 ]. Likewise, priming rice seeds with ABA at 10 µM reduced alkaline stress by enhancing antioxidant enzyme activities and the activity of stress tolerance-related genes in the roots of rice seedlings [ 107 ]. Moreover, Wei et al [ 108 ] reported that ABA (10 µM and 50 µM) priming of rice seeds improved the growth rate, survival rate, biomass accumulation, and root formation under alkaline stress.…”

Section: Commonly Used Pgrs In Seed Primingmentioning

confidence: 99%

Seed Priming with Phytohormones: An Effective Approach for the Mitigation of Abiotic Stress

Rhaman

Imran

Rauf

et al. 2020

Plants

180

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Plants are often exposed to abiotic stresses such as drought, salinity, heat, cold, and heavy metals that induce complex responses, which result in reduced growth as well as crop yield. Phytohormones are well known for their regulatory role in plant growth and development, and they serve as important chemical messengers, allowing plants to function during exposure to various stresses. Seed priming is a physiological technique involving seed hydration and drying to improve metabolic processes prior to germination, thereby increasing the percentage and rate of germination and improving seedling growth and crop yield under normal and various biotic and abiotic stresses. Seed priming allows plants to obtain an enhanced capacity for rapidly and effectively combating different stresses. Thus, seed priming with phytohormones has emerged as an important tool for mitigating the effects of abiotic stress. Therefore, this review discusses the potential role of priming with phytohormones to mitigate the harmful effects of abiotic stresses, possible mechanisms for how mitigation is accomplished, and roles of priming on the enhancement of crop production.

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Section: Commonly Used Pgrs In Seed Primingmentioning

confidence: 99%

Seed Priming with Phytohormones: An Effective Approach for the Mitigation of Abiotic Stress

Rhaman

Imran

Rauf

et al. 2020

Plants

180

View full text Add to dashboard Cite

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“…Agronomic characters represent the combined genetic and environmental effects upon plant growth and yield, as they include the physiological mechanisms conferring salinity and alkalinity tolerance [27,34,40,78]. When using the two methods, the SATC of SDM was separately identified as an important predictor and was significantly related to the SL (Table S5).…”

Section: Identification Of the Best Markers For Predicting The Salinementioning

confidence: 99%

Ca2+/Na+ Ratio as a Critical Marker for Field Evaluation of Saline-Alkaline Tolerance in Alfalfa (Medicago sativa L.)

et al. 2020

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Current indices of saline-alkaline (SA) tolerance are mainly based on the traditional growth and physiological indices for salinity tolerance and likely affect the accuracy of alfalfa tolerance predictions. We determined whether the inclusion of soil alkalinity-affected indices, particularly Ca2+, Mg2+, and their ratios to Na+ in plants, based on the traditional method could improve the prediction accuracy of SA tolerance in alfalfa, determine important indices for SA tolerance, and identify suitable alfalfa cultivars in alkaline salt-affected soils. Fifty alfalfa cultivars were evaluated for their SA tolerance under SA and non-SA field conditions. The SA-tolerance coefficient (SATC) for each investigated index of the alfalfa shoot was calculated as the ratio of SA to non-SA field conditions, and the contribution of SATC under different growth and physiological indices to SA tolerance was quantified based on the inclusion/exclusion of special alkalinity-affected indices. The traditional method, excluding the special alkalinity-affected indices, explained nearly all of the variation in alfalfa SA tolerance, and the most important predictor was the SATC of stem length. The new method, which included these special alkalinity-affected indices, had similar explanatory power but instead identified the SATC of shoot Ca2+/Na+ ratio, followed by that of stem length, as key markers for the field evaluation of SA tolerance. Ca2+, Mg2+, and their ratios to Na+ hold promise for enhancing the robustness of SA-tolerance predictions in alfalfa. These results encourage further investigation into the involvement of Ca2+ in such predictions in other plant species and soil types under more alkaline salt-affected conditions.

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“…Soil salinization is one of the key abiotic stresses that inhibit plant growth; it significantly restricts agricultural production, especially in arid and semi-arid areas ( Rozema and Flowers, 2008 ; Zhang et al, 2010 ). Alkaline stress (the stress caused by basic salts, primarily Na 2 CO 3 , and NaHCO 3 ) includes components of osmotic stress, ion toxicity, and high pH stress; it greatly influences root function, photosynthesis, biological membranes, ion homeostasis, and nutrient metabolism, thereby strongly inhibiting plant growth ( Yang et al, 2009 ; Guo et al, 2010 , 2015a ; Wang et al, 2015a ; Sun et al, 2016 ; Liu et al, 2019a ). Therefore, it is very important to improve the capacity of plants to resist alkaline stress.…”

Section: Introductionmentioning

confidence: 99%

MdTyDc Overexpression Improves Alkalinity Tolerance in Malus domestica

et al. 2021

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Tyrosine is decarboxylated to tyramine by TYDC (Tyrosine decarboxylase) and then hydroxylated to dopamine, which is involved in plant response to abiotic stress. However, little is known about the function of MdTyDc in response to alkaline stress in plants. In our study, it was found that the expression of MdTyDc was induced by alkaline stress. Therefore, the apple plants overexpressing MdTyDc was treated with alkali stress, and we found that MdTyDc played an important role in apple plants’ resistance to alkali stress. Our results showed that the restriction on the growth, the decrease of membrane permeability and the accumulation of Na+ were alleviated to various degrees in MdTyDc transgenic plants under alkali stress. In addition, overexpression of MdTyDc enhanced the root activity and photosynthetic capacity, and improved the enzyme activity related to N metabolism, thus promoting N absorption. It is noteworthy that the dopamine content of these three transgenic lines is significantly higher than that of WT. In summary, these findings indicated that MdTyDc may enhance alkaline tolerance of apples by mediating dopamine content, mainly by maintaining high photosynthetic capacity, normal ion homeostasis and strong nitrogen absorption capacity.

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Abscisic acid primes rice seedlings for enhanced tolerance to alkaline stress by upregulating antioxidant defense and stress tolerance-related genes

Cited by 63 publications

References 83 publications

Seed Priming with Phytohormones: An Effective Approach for the Mitigation of Abiotic Stress

Seed Priming with Phytohormones: An Effective Approach for the Mitigation of Abiotic Stress

Ca2+/Na+ Ratio as a Critical Marker for Field Evaluation of Saline-Alkaline Tolerance in Alfalfa (Medicago sativa L.)

MdTyDc Overexpression Improves Alkalinity Tolerance in Malus domestica

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