The Effects of Saline Stress on the Growth of Two Shrub Species in the Qaidam Basin of Northwestern China

Tan, Zhijian; Zhang, Zhenzhong; Li, Yuanhang; He, Kuifeng

doi:10.3390/su11030828

Cited by 19 publications

(15 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mean annual temperature ranges from 4.6 to 12.3° C . Among the 6 sites, the regional climatic regime and vegetation composition are distinct, and the details are listed in Supplementary Table S1 (Horqin: Zhao et al, 2010a ; Loess: Zhao et al, 2010b ; Mu Us: Guan and Cao, 2019 ; Tengger: Li et al, 2003 ; Guerbantunggut: Zhang et al, 2002 ; Qaidam: Zhang et al, 2019 ).…”

Section: Methodsmentioning

confidence: 99%

Water Availability, Soil Characteristics, and Confounding Effects on the Patterns of Biocrust Diversity in the Desert Regions of Northern China

Sun

Li²

2022

Front. Plant Sci.

View full text Add to dashboard Cite

The species diversity of biocrusts is an important community characteristic in determining their multiple ecosystem functions. Hence, understanding the diversity patterns of biocrusts and their environmental drivers is of fundamental importance. However, explain variables often correlated with each other; thus, the confounding effects among them may arise and result in spurious causal relationships and biased ecological inferences. In this study, we investigated the richness of three biocrust-forming components (mosses, lichens, and cyanobacteria–algae) and their environmental variables across six desert regions of northern China. A comparison between conventional redundancy analysis (RDA) and structural equation model (SEM) was conducted to study the environmental driver-richness relationship and the confounding effects. Our results showed that three latent variables related to water availability, soil texture, and soil salinity and sodicity, could account for the main environmental variations and explain the diversity patterns of biocrusts at the intracontinental scale. Water availability was positively and negatively related to the richness of mosses and cyanobacteria–algae, respectively, while soil texture was positively related to the richness of lichens. In addition, environmental variables confounded with each other caused distinct driver-richness relationships between results of RDA and SEM. Therefore, we suggest that future multivariable studies should utilize path analysis in conjunction with conventional canonical ordination to facilitate more rigorous ecological inferences.

show abstract

Section: Methodsmentioning

confidence: 99%

Water Availability, Soil Characteristics, and Confounding Effects on the Patterns of Biocrust Diversity in the Desert Regions of Northern China

Sun

Li²

2022

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…Salinity affects the germination and growth of papaya seedlings, compromising orchards in the future (Lima-Neto et al, 2016). This is a result of water absorption restriction (osmotic effect) and changes in metabolism, nutrient absorption, and ionic balance (ionic effect) (Zhang et al, 2019), which promote the generation of reactive oxygen species, thereby damaging the cellular components and photosynthetic pigments (Ibrahim et al, 2018;Dias et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Growth and physiology of ‘Sunrise’ papaya seedlings in response to salinity and humic acid

Targino

Lopes

Sousa

et al. 2023

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

Salinity is one of the major obstacles to agriculture in semi-arid regions, as it affects the physiological processes, growth, and yield of numerous crops. Hence, the application of salt stress attenuators is of paramount importance, as it enables the use of saline water for agricultural purposes. Among these, humic acid promotes the growth as well as water and nutrient uptake of plants. To this end, the present study evaluated the effects of humic acid on the growth and physiology of Carica papaya seedlings irrigated with saline water. The experiment followed the randomized block design with five levels of electrical conductivity (0.5, 1.15, 2.75, 4.35, and 5.0 dS m-1) and five concentrations of humic acid (0.5, 0.94, 2.0, 3.06, and 3.5 mL L-1). Growth, gas exchange, chlorophyll content, and chlorophyll a fluorescence were evaluated. Irrigation with 4.9 dS m-1 water and application of 3.05 mL L-1 humic acid promoted the growth of papaya seedlings. Irrigation with high-salinity water (4.96 and 3.09 dS m-1) coupled with the application of 3.05 and 2.21 mL L-1 humic acid increased internal CO2 concentration, transpiration, instantaneous water use efficiency, carboxylation efficiency, and chlorophyll b content. Overall, humic acid (3.5 mL L-1) attenuated the deleterious effects of salt stress, promoting the growth and improving the performance of papaya seedlings under moderate salinity (4 dS m-1).

show abstract

“…In general, the salinity of irrigation water inhibits plant growth through osmotic and ionic effects that restrict the absorption of water and essential elements (SOUZA et al, 2016;TANAKA et al, 2018), leading to changes in the ion balance of plant tissues as well as disturbances in plant metabolism (ZHANG et al, 2019). In addition, it induces excessive production of reactive oxygen species, as by-products of cellular metabolism, which damage important cellular components, degrade chlorophyll, and cause lipid peroxidation of the membrane, thus reducing membrane fluidity and selectivity (TAÏBI et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Potassium fertilization as salt stress attenuator in sour passion fruit

et al. 2023

View full text Add to dashboard Cite

Water scarcity associated with irregular rainfall in the semi-arid region of Northeastern Brazil stands out as a limiting factor for agricultural production. Thus, the use of waters with high concentration of salts is an alternative to expand irrigated agriculture in this region. In this context, this study evaluated the water status, intercellular electrolyte leakage, photosynthetic pigments, and gas exchange of ‘BRS SC1’ sour passion fruit as a function of irrigation with water of different levels of salinity and potassium doses. The experiment was carried out in pots adapted as drainage lysimeters under field conditions at the Experimental Farm of the Federal University of Campina Grande in São Domingos - PB, Brazil. The experimental design was randomized blocks, in a 5 × 4 factorial scheme, whose treatments were obtained by combining two factors: five levels of electrical conductivity of irrigation water - ECw (0.3, 1.1, 1.9, 2.7, and 3.5 dS m-1), associated with four potassium doses (60, 80, 100, and 120% of the recommendation), with three replicates. Water with electrical conductivity greater than 0.3 dS m-1 reduced the relative water content, chlorophyll a and chlorophyll b contents, CO2 assimilation rate, and instantaneous water use efficiency of ‘BRS SC1’ sour passion fruit plants. The estimated potassium dose of 85% of the recommendation (equivalent to 293 g per plant per year) mitigated the deleterious effects of salt stress on stomatal conductance, transpiration, internal CO2 concentration, and instantaneous carboxylation efficiency of passion fruit ‘BRS SC1’.

show abstract

The Effects of Saline Stress on the Growth of Two Shrub Species in the Qaidam Basin of Northwestern China

Cited by 19 publications

References 43 publications

Water Availability, Soil Characteristics, and Confounding Effects on the Patterns of Biocrust Diversity in the Desert Regions of Northern China

Water Availability, Soil Characteristics, and Confounding Effects on the Patterns of Biocrust Diversity in the Desert Regions of Northern China

Growth and physiology of ‘Sunrise’ papaya seedlings in response to salinity and humic acid

Potassium fertilization as salt stress attenuator in sour passion fruit

Contact Info

Product

Resources

About