Desert Dust as a Vector for Cyanobacterial Toxins

Metcalf, James S.; Chatziefthimiou, Aspassia D.; Souza, N. R.; Cox, Paul Alan

doi:10.1007/978-3-030-51506-5_8

Cited by 2 publications

(3 citation statements)

References 121 publications

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“…Drylands form 41%–45% of the land area, which is occupied by 31% of the world’s human population ( Metcalf et al., 2021 ). It has been shown that P deficiency restricts plant growth, especially in arid ecosystems, and P cycling is determined by both geochemical and biological factors.…”

Section: Plant Molecular Adaptations For P Uptakementioning

confidence: 99%

“…It has been shown that P deficiency restricts plant growth, especially in arid ecosystems, and P cycling is determined by both geochemical and biological factors. The amount of water, soil type, P concentration, and plant diversity can be considered as aridity indices of desert environments ( Metcalf et al., 2021 ). Plants in desert conditions have evolved several morphological, metabolic, and physiological modifications, enabling the P acquisition from the dust (up to 30%).…”

Section: Plant Molecular Adaptations For P Uptakementioning

confidence: 99%

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Plant–microbe interactions ameliorate phosphate-mediated responses in the rhizosphere: a review

Abbasi

2023

Front. Plant Sci.

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Phosphorus (P) is one of the essential minerals for many biochemical and physiological responses in all biota, especially in plants. P deficiency negatively affects plant performance such as root growth and metabolism and plant yield. Mutualistic interactions with the rhizosphere microbiome can assist plants in accessing the available P in soil and its uptake. Here, we provide a comprehensive overview of plant–microbe interactions that facilitate P uptake by the plant. We focus on the role of soil biodiversity in improved P uptake by the plant, especially under drought conditions. P-dependent responses are regulated by phosphate starvation response (PSR). PSR not only modulates the plant responses to P deficiency in abiotic stresses but also activates valuable soil microbes which provide accessible P. The drought-tolerant P-solubilizing bacteria are appropriate for P mobilization, which would be an eco-friendly manner to promote plant growth and tolerance, especially in extreme environments. This review summarizes plant–microbe interactions that improve P uptake by the plant and brings important insights into the ways to improve P cycling in arid and semi-arid ecosystems.

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Section: Plant Molecular Adaptations For P Uptakementioning

confidence: 99%

Section: Plant Molecular Adaptations For P Uptakementioning

confidence: 99%

Plant–microbe interactions ameliorate phosphate-mediated responses in the rhizosphere: a review

Abbasi

2023

Front. Plant Sci.

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“…Coupled with the potential for dust production from a predominantly westerly wind, the possibility exists for crusts and other dried lakebed material to become airborne. This has the potential to adversely affect human populations, both short-and long-term [41].…”

Section: Introductionmentioning

confidence: 99%

Cyanotoxin Analysis of Air Samples from the Great Salt Lake

Metcalf,

Banack,

Cox

2023

Toxins

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The Great Salt Lake in Utah is the largest saline lake in the Western hemisphere and one of the largest terminal lakes in the world. Situated at the eastern edge of the Great Basin, it is a remnant of the freshwater Lake Bonneville whose water level precipitously lowered about 12,000 years ago due to a natural break in Red Rock pass to the north. It contains a diverse assemblage of cyanobacteria which vary spatially dependent on salinity. In 1984, the waters of the Great Salt Lake occupied 8500 km2. Nearly four decades later, the waters occupy 2500 km2—a reduction in surface area of 71%. With predominantly westerly winds, there is a potential for the adjacent metropolitan residents to the east to be exposed to airborne cyanobacteria- and cyanotoxin-containing dust. During the summer and fall months of 2022, air and dried sediment samples were collected and assessed for the presence of BMAA which has been identified as a risk factor for ALS. Collection of air samples equivalent to a person breathing for 1 h resulted in BMAA and isomers being found in some air samples, along with their presence in exposed lakebed samples. There was no clear relationship between the presence of these toxins in airborne and adjacent lakebed samples, suggesting that airborne toxins may originate from diffuse rather than point sources. These findings confirm that continued low water levels in the Great Salt Lake may constitute an increasing health hazard for the 2.5 million inhabitants of communities along the Wasatch Front.

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Desert Dust as a Vector for Cyanobacterial Toxins

Cited by 2 publications

References 121 publications

Plant–microbe interactions ameliorate phosphate-mediated responses in the rhizosphere: a review

Plant–microbe interactions ameliorate phosphate-mediated responses in the rhizosphere: a review

Cyanotoxin Analysis of Air Samples from the Great Salt Lake

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