Effect of NaCl-induced changes in growth, photosynthetic characteristics, water status and enzymatic antioxidant system of Calligonum caput-medusae seedlings

Lu, Yanwei; Lei, Jiaqiang; Zeng, Fanjiang; Zhang, Bo; Liu, G.-J.; Liu, Bobo; Li, X.-Y.

doi:10.1007/s11099-016-0234-6

Cited by 29 publications

(26 citation statements)

References 59 publications

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“…In the experiment a decrease in Pn could be related with 1) stomatal closure and mesophyll CO2 conductance (Flexas et al, 2004); 2) concurrent non-stomatal factors; 3) a decline in photosynthetic pigments; and 4) changes in ion accumulations (high concentration of Na+ and Lu et al (2016). A similar response in WUEi was observed in our experiment at the end of the salinity period (especially in RW3 plants).…”

Section: Gas Exchangesupporting

confidence: 81%

The long-term resistance mechanisms, critical irrigation threshold and relief capacity shown by Eugenia myrtifolia plants in response to saline reclaimed water

Acosta‐Motos

Hernández

Álvarez

et al. 2017

Plant Physiology and Biochemistry

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Salts present in irrigation water are serious problems for commercial horticulture, particularly in semi-arid regions. Reclaimed water (RW) typically contains, among others elements, high levels of salts, boron and heavy metal. Phytotoxic ion accumulation in the substrate has been linked to different electric conductivities of the treatments. Based on these premises, we studied the long-term effect of three reclaimed water treatments with different saline concentrations on Eugenia myrtifolia plants. We also looked at the ability of these plants to recover when no drainage was applied. The RW with the highest electric conductivity (RW3, EC = 6.96 dS m) provoked a number of responses to salinity in these plants, including: 1) accumulation and extrusion of phytotoxic ions in roots; 2) a decrease in the shoot/root ratio, leaf area, number of leaves; 3) a decrease in root hydraulic conductivity, leaf water potential, the relative water content of leaves, leaf stomatal conductance, the leaf photosynthetic rate, water-use efficiency and accumulated evapotranspiration in order to limit water loss; and 4) changes in the antioxidant defence mechanisms. These different responses induced oxidative stress, which can explain the damage caused in the membranes, leading to the death of RW3 plants during the relief period. The behaviour observed in RW2 plants was slightly better compared with RW3 plants, although at the end of the experiment about 55% of the RW2 plants also died, however RW containing low salinity level (RW1, EC = 2.97 dS m) can be effective for plant irrigation.

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Section: Gas Exchangesupporting

confidence: 81%

The long-term resistance mechanisms, critical irrigation threshold and relief capacity shown by Eugenia myrtifolia plants in response to saline reclaimed water

Acosta‐Motos

Hernández

Álvarez

et al. 2017

Plant Physiology and Biochemistry

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“…This result indicated that the four cultivars had distinct sensitivities to salt stress. Changing the biomass allocation pattern is an important strategy in salt stress adaptation (Lu et al, ). Increased root biomass but not shoot biomass could promote the absorption of more moisture and nutrients, thereby improving the vitality and antiadversity ability of plants under salt stress conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, excessive accumulation of Na + significantly inhibits photosynthesis in plants. The effect is compounded by the deficiency of other ions due to excessive Na + accumulation, which also seriously reduces photosynthesis (Lu et al, ). Previous studies have reported that photosynthesis depends on phosphate‐containing compounds and that phosphate efficiency influences photosynthetic activity (Veneklaas et al, ; Zhang et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…He et al, ; Lenis et al, ; Patil et al, ). The reduced plant growth observed in plants subjected to salt stress is often associated with decreased photosynthetic activity (Guo et al, ; Lu et al, ). As a consequence of osmotic stress, high Na + concentration inhibits photosynthesis, which results in decreased stomatal conductance.…”

Section: Introductionmentioning

confidence: 99%

“…He et al, 2015;Lenis et al, 2011;Patil et al, 2016). The reduced plant growth observed in plants subjected to salt stress is often associated with decreased photosynthetic activity (Guo et al, 2015;Lu et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Physiological and transcriptional responses to salt stress in salt‐tolerant and salt‐sensitive soybean (Glycine max[L.] Merr.) seedlings

et al. 2018

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Excess salinity is a major environmental threat to agriculture. However, the adaptive mechanisms underlying salt tolerance in soybean (Glycine max [L.] Merr.) remain unclear. The aim of this study was to investigate the differences between salt‐tolerant and salt‐sensitive soybeans in their physiological characteristics and the expression patterns of 8 cation antiporters under salt stress. The inhibitory effects of salt stress on growth and photosynthesis in salt‐sensitive soybean were stronger than those in salt‐tolerant soybean. The concentration of phosphate and most other ions in the seedlings significantly declined under a 150‐mM‐NaCl treatment. Relative K+, Mg2+, and P concentrations were significantly positively correlated with relative net photosynthetic rate. GmNHX1 (Glyma.10G158700) and GmNcl1 (Glyma.03g171500) had similar expression patterns in the salt‐tolerant and salt‐sensitive cultivars. Furthermore, a significant correlation was present between the transcript levels of these 2 genes and the Na+ concentration in soybean leaves. In addition to GmSALT3, which is the major gene in soybean for salt tolerance in previous studies, GmNHX1 and GmNcl1 may be associated with salt tolerance in soybean to some extent. The salt‐tolerant cultivars in this study maintained higher K+, Mg2+, and P concentrations in the leaf and had higher photosynthetic rates than the salt‐sensitive cultivar did under salt stress. These findings can provide theoretical references for the molecular breeding of salt‐tolerant soybean and the sustainable use of saline soils.

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A threshold‐like effect on the interaction between hydrological connectivity and dominant plant population in tidal marsh wetlands

Liu

Xie

et al. 2021

Land Degrad Dev

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Tidal marsh wetlands in the Yellow River Delta provide valuable eco‐services to the local population and global ecology. However, this area is suffering from serious degradation under the stresses of social development and climate change. Hydrological connectivity, a new framework in hydrology and ecology, has been proposed as the main factor affecting the ecological processes in coastal wetlands; however, its role in hydrology–soil–vegetation interactions remains unclear. In this study, we parametrically quantified the hydrological connectivity in the tidal marsh wetlands and analyzed its relationship with Phragmites australis, one of the dominant species in this area. Our results showed threshold‐like effects on the interaction between hydrological connectivity and P. australis on the plot scale. When biomass is lower than 2.2 kg m−2, the population density and structure size were found to increase with hydrological connectivity. When the biomass is higher than the threshold, the plots disconnected hydrologically because of high water consumption. Compared with soil chemistry, salinity, and water soil content, hydrological connectivity in the surface soil layer is more strongly linked to the plant traits and spatial structure in the tidal marsh wetlands due to the narrow ranges of other variables. Based on the Best on previous study and our analysis, we do not recommend dense plantation of P. australis, especially near the freshwater sources in the tidal marsh, because of its high reproduction ability and competitive nature, which may cut the freshwater connectivity off, lowering the richness of plant species and habitat diversity.

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Effect of NaCl-induced changes in growth, photosynthetic characteristics, water status and enzymatic antioxidant system of Calligonum caput-medusae seedlings

Cited by 29 publications

References 59 publications

The long-term resistance mechanisms, critical irrigation threshold and relief capacity shown by Eugenia myrtifolia plants in response to saline reclaimed water

The long-term resistance mechanisms, critical irrigation threshold and relief capacity shown by Eugenia myrtifolia plants in response to saline reclaimed water

Physiological and transcriptional responses to salt stress in salt‐tolerant and salt‐sensitive soybean (Glycine max[L.] Merr.) seedlings

A threshold‐like effect on the interaction between hydrological connectivity and dominant plant population in tidal marsh wetlands

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