Salinity as a major influence on groundwater microbial communities in agricultural landscapes

Nelson, Tess; Hose, Grant C.; Dabovic, Jodie; Korbel, Kathryn L.

doi:10.1071/mf23014

Cited by 3 publications

(1 citation statement)

References 98 publications

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“…Other causes of salinization include improper irrigation, inadequate drainage, and high levels of soluble salts in the irrigation water. It is estimated that approximately 30% of sustainable agricultural land will face salt stress in the next 25 years, and this figure is expected to rise to 50% by the end of the 21st century due to the possible expansion of salt-affected areas [19,20].…”

Section: Responses Of Cereal Plants To Saline Stressmentioning

confidence: 99%

Defense Pathways of Wheat Plants Inoculated with Zymoseptoria tritici under NaCl Stress Conditions: An Overview

Baran,

Ölmez,

Çapa

et al. 2024

Life

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Due to being sessile, plants develop a broad range of defense pathways when they face abiotic or biotic stress factors. Although plants are subjected to more than one type of stress at a time in nature, the combined effects of either multiple stresses of one kind (abiotic or biotic) or more kinds (abiotic and biotic) have now been realized in agricultural lands due to increases in global warming and environmental pollution, along with population increases. Soil-borne pathogens, or pathogens infecting aerial parts, can have devastating effects on plants when combined with other stressors. Obtaining yields or crops from sensitive or moderately resistant plants could be impossible, and it could be very difficult from resistant plants. The mechanisms of combined stress in many plants have previously been studied and elucidated. Recent studies proposed new defense pathways and mechanisms through signaling cascades. In light of these mechanisms, it is now time to develop appropriate strategies for crop protection under multiple stress conditions. This may involve using disease-resistant or stress-tolerant plant varieties, implementing proper irrigation and drainage practices, and improving soil quality. However, generation of both stress-tolerant and disease-resistant crop plants is of crucial importance. The establishment of a database and understanding of the defense mechanisms under combined stress conditions would be meaningful for the development of resistant and tolerant plants. It is clear that leaf pathogens show great tolerance to salinity stress and result in pathogenicity in crop plants. We noticed that regulation of the stomata through biochemical applications and some effort with the upregulation of the minor gene expressions indirectly involved with the defense mechanisms could be a great way to increase the defense metabolites without interfering with quality parameters. In this review, we selected wheat as a model plant and Zymoseptoria tritici as a model leaf pathogen to evaluate the defense mechanisms under saline conditions through physiological, biochemical, and molecular pathways and suggested various ways to generate tolerant and resistant cereal plants.

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Section: Responses Of Cereal Plants To Saline Stressmentioning

confidence: 99%

Defense Pathways of Wheat Plants Inoculated with Zymoseptoria tritici under NaCl Stress Conditions: An Overview

Baran,

Ölmez,

Çapa

et al. 2024

Life

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Saline mine water influences eukaryote life in shallow groundwater of a tropical sandy stream

Chandler,

Harford,

Hose

et al. 2024

Science of The Total Environment

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Biogeography of hot spring photosynthetic microbial biofilms in Southeast Asia

Pointing,

George,

Kortheerakul

et al. 2024

Preprint

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Hot springs are tractable model systems in microbial ecology for investigating the interactions of photosynthetic microbial biofilms. This is because they occur across broad geographic scales, possess readily identified major abiotic variables, and are subject to minimal influence from metazoans. Despite this regional scale investigations are lacking, and major questions persist concerning the evolutionary drivers responsible for biofilm turnover at broad geographic scales. Here, we present the largest study to date, incorporating concurrent measurement of biotic and abiotic diversity and rigorous statistical analysis and modelling. We characterized 395 biofilms from neutral-alkaline hot springs spanning a 2,100km latitudinal gradient in Southeast Asia. The data clearly resolved six biogeographic regions with each defined by a core microbiome comprising specific cyanobacteria and other diverse photosynthetic, chemoheterotrophic, and chemoautotrophic taxa. Our findings demonstrated that the most influential abiotic variables (pH, conductivity, carbonate) accounted for relatively little of the observed variation in biofilm communities, and that extensive biotic interactions spanned multiple trophic levels. Importantly, we present quantitative evidence that stochasticity due to ecological drift was the most important evolutionary driver of spatial turnover at a regional scale. These insights establish a pivotal milestone in understanding of this model system, fostering enhanced testing and comparison with more intricate microbial ecosystems.

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Salinity as a major influence on groundwater microbial communities in agricultural landscapes

Cited by 3 publications

References 98 publications

Defense Pathways of Wheat Plants Inoculated with Zymoseptoria tritici under NaCl Stress Conditions: An Overview

Defense Pathways of Wheat Plants Inoculated with Zymoseptoria tritici under NaCl Stress Conditions: An Overview

Saline mine water influences eukaryote life in shallow groundwater of a tropical sandy stream

Biogeography of hot spring photosynthetic microbial biofilms in Southeast Asia

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