Root Damage under Alkaline Stress Is Associated with Reactive Oxygen Species Accumulation in Rice (Oryza sativa L.)

Zhang, Hui; Liu, Xiaolong; Zhang, Rui Xue; Yuan, Hang; Wang, Mingming; Yang, Haoyu; Ma, Hongling; Liu, Duo; Jiang, Chang‐Jie; Liang, Zhengwei

doi:10.3389/fpls.2017.01580

Cited by 147 publications

(110 citation statements)

References 59 publications

Supporting

Mentioning

107

Contrasting

Order By: Relevance

“…This result could be explained through the osmotic stress effects of plant root growth [24]. Previous work showed that salt stress conditions had a suppression role in the growth of plants [25]. Similar results were obtained in our present study.…”

Section: Discussionsupporting

confidence: 92%

Effects of Ca(NO3)2 Stress on Mitochondria and Nitrogen Metabolism in Roots of Cucumber Seedlings

Yang

Lǚ

et al. 2020

Agronomy

View full text Add to dashboard Cite

Cucumber is a major vegetable crop grown in facilities, and its seedlings are sensitive to salinity. Thus, it is important for cucumber cultivation to research the effects of Ca(NO3)2. In this study, we investigated salt-sensitive Chunqiu (CQ) and salt-tolerant BoMei 49 (BM) seedlings, the changes to the enzymes involved in the mitochondria antioxidant system in the seedlings, and the changes in the MPTP (Mitochondrial Permeability Transition Pore) opening, mitochondrial membrane fluidity, mitochondrial membrane potential depolarization, mitochondrial electron transfer chain, and NO metabolism in response to Ca(NO3)2. Ca(NO3)2 stresses inhibited the growth of the cucumber seedlings, which showed a reduced root length, a decreased surface area and a decreased number of root tips, but a significantly increased root diameter. The mitochondrial malondialdehyde (MDA) content, H2O2 content, and O2− producing rate of the two cucumber roots were gradually increased in the Ca(NO3)2 treatment. The activity of superoxide dismutase (SOD) and peroxidation enzyme (POD) gradually increased, and catalase (CAT) activity gradually decreased. The electron transport chain activity of “BM” was higher than “CQ” under Ca(NO3)2 stress. Ca(NO3)2 stress destroyed the membrane structure of the mitochondria, so that the mitochondrial body tended to bend, causing double-membrane digestion and a hollow interior. Under the stress of Ca(NO3)2, the NO3− content of the seedlings increased significantly. The contents of NH4+ and NO, as well as the activities of nitrate reductase (NR), nitrite reductase (NIR), and nitric oxide synthase (NOS) decreased significantly. These findings provide physiological insights into root damage in response to salt stress for salt tolerance in cucumber.

show abstract

Section: Discussionsupporting

confidence: 92%

Effects of Ca(NO3)2 Stress on Mitochondria and Nitrogen Metabolism in Roots of Cucumber Seedlings

Yang

Lǚ

et al. 2020

Agronomy

View full text Add to dashboard Cite

show abstract

“…Our results were in agreement with the findings of Kumar et al [32] in chickpea, Sita et al [30] in lentil, and Hu et al [21] in tall fescue, who reported higher EL under heat stress. The increase in lipid peroxidation might be as a result of the overproduction and accumulation of ROS, which then causes membrane peroxidation, protein degradation, and DNA damage to severely inhibit growth [33][34][35]. Consequently, our results revealed that heat stress highly damaged the membrane integrity and stability of alfalfa, especially heat-sensitive cultivars.…”

Section: Discussionmentioning

confidence: 73%

Effect of Heat Stress on Growth and Physiological Traits of Alfalfa (Medicago sativa L.) and a Comprehensive Evaluation for Heat Tolerance

Wassie

Zhang

et al. 2019

Agronomy

View full text Add to dashboard Cite

Alfalfa (Medicago sativa L.) is a valuable forage legume, but its production is largely affected by high temperature. In this study, we investigated the effect of heat stress on 15 alfalfa cultivars to identify heat-tolerant and -sensitive cultivars. Seedlings were exposed to 38/35 °C day/night temperature for 7 days and various parameters were measured. Heat stress significantly reduced the biomass, relative water content (RWC), chlorophyll content, and increased the electrolyte leakage (EL) and malondialdehyde (MDA) content of heat-sensitive alfalfa cultivars. However, heat-tolerant cultivars showed higher soluble sugar (SS) and soluble protein (SP) content. The heat tolerance of each cultivar was comprehensively evaluated based on membership function value. Cultivars with higher mean membership function value of 0.86 (Bara310SC) and 0.80 (Magna995) were heat tolerant, and Gibraltar and WL712 with lower membership function value (0.24) were heat sensitive. The heat tolerance of the above four cultivars were further evaluated by chlorophyll a fluorescence analysis. Heat stress significantly affected the photosynthetic activity of heat-sensitive cultivars. The overall results indicate that Bara310SC and WL712 are heat-tolerant and heat-sensitive cultivars, respectively. This study provides basic information for understanding the effect of heat stress on growth and productivity of alfalfa.

show abstract

“…This suggests that the above parameters of root growth (i.e., Na + content in underground tissue and the length of new roots) can be regarded as the primary indicators for evaluating salt tolerance capacity of wetland plant species. Due to the direct contact with salt, the first organ to be affected by saline and alkaline stress is underground tissue (i.e., root) [61]. The existing salt on the outside of roots has an immediate effect on cell growth and associated metabolism [55].…”

Section: Principal Component Analysis (Pca) For Selecting Salt Toleramentioning

confidence: 99%

Saline and Alkaline Tolerance of Wetland Plants—What are the Most Representative Evaluation Indicators?

et al. 2020

View full text Add to dashboard Cite

The increasing discharge of wastewater containing inorganic salts, sometimes accompanied by high pH, has been a worldwide environmental problem. Constructed wetlands (CWs) are considered a viable technology for treating saline and/or alkaline wastewater provided that saline-alkaline tolerant plant species are selected and applied. The influence of both saline and alkaline stress on four wetland plant species during their seed germination, early growth, vegetative propagation and continued growth stages was evaluated by three experiments. Principal component analysis (PCA) was conducted for selecting representative indicators for evaluating the saline and alkaline tolerance of plants during vegetative propagation and plant growth stages. The saline and alkaline stress inhibited the vegetative propagation and plant growth of all tested plant species to varying degrees, therein the influences of saline-alkaline stress on plants were more marked than saline stress. The length of new roots, Na+ accumulation in plant tissue, Na+/K+ ratios in aerial tissue and the total dry biomass were selected as most representative indicators for evaluating the saline and alkaline tolerance of plants. Iris sibirica and Lythrum salicaria showed better saline and alkaline tolerance ability among tested species and could be grown in CWs for treating saline and/or alkaline wastewater.

show abstract

Root Damage under Alkaline Stress Is Associated with Reactive Oxygen Species Accumulation in Rice (Oryza sativa L.)

Cited by 147 publications

References 59 publications

Effects of Ca(NO3)2 Stress on Mitochondria and Nitrogen Metabolism in Roots of Cucumber Seedlings

Effects of Ca(NO3)2 Stress on Mitochondria and Nitrogen Metabolism in Roots of Cucumber Seedlings

Effect of Heat Stress on Growth and Physiological Traits of Alfalfa (Medicago sativa L.) and a Comprehensive Evaluation for Heat Tolerance

Saline and Alkaline Tolerance of Wetland Plants—What are the Most Representative Evaluation Indicators?

Contact Info

Product

Resources

About