The Impact of Lake Bonneville and Lake Lahontan on the Halophytes of the Great Basin

Weber, D. J.

doi:10.1007/978-3-319-27093-7_8

Cited by 4 publications

(3 citation statements)

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“…The collection site primarily consists of highly saline soil with three dominant halophyte species, Allenrolfea occidentalis, Salicornia rubra, and Sarcornia utahensis (Figure 1). This site is just south of Utah Lake with high salinity due to the evaporation of water since the collapse of ancient Lake Bonneville more than 14,000 years ago (Weber, 2016). This area is about 1.5 miles away from productive alfalfa fields where soil is much less saline (0.7–1.6 dS/m compared to 16–100 dS/m where the halophyte samples were collected).…”

Section: Resultsmentioning

confidence: 99%

“…Much of the state of Utah is a high desert with saline soils, and a wide variety of halophytes are native to this area. In the study area, we have focused on primarily three halophyte species: Salicornia rubra , Sarcocornia utahensis , and Allenrolfea occidentalis (Weber, 2016). Over the past few decades, considerable progress has been made in understanding physiological mechanisms and gene expression changes involved in salt tolerance in halophytes (Shabala, 2013; Diray-Arce et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Salt-Tolerant Halophyte Rhizosphere Bacteria Stimulate Growth of Alfalfa in Salty Soil

et al. 2019

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Halophytes are plants that are adapted to grow in saline soils, and have been widely studied for their physiological and molecular characteristics, but little is known about their associated microbiomes. Bacteria were isolated from the rhizosphere and as root endophytes of Salicornia rubra, Sarcocornia utahensis, and Allenrolfea occidentalis , three native Utah halophytes. A total of 41 independent isolates were identified by 16S rRNA gene sequencing analysis. Isolates were tested for maximum salt tolerance, and some were able to grow in the presence of up to 4 M NaCl. Pigmentation, Gram stain characteristics, optimal temperature for growth, and biofilm formation of each isolate aided in species identification. Some variation in the bacterial population was observed in samples collected at different times of the year, while most of the genera were present regardless of the sampling time. Halomonas , Bacillus , and Kushneria species were consistently isolated both from the soil and as endophytes from roots of all three plant species at all collection times. Non-culturable bacterial species were analyzed by Illumina DNA sequencing. The most commonly identified bacteria were from several phyla commonly found in soil or extreme environments: Acidobacteria, Actinobacteria, Bacteroidetes, Chloroflexi, and Gamma- and Delta-Proteobacteria. Isolates were tested for the ability to stimulate growth of alfalfa under saline conditions. This screening led to the identification of one Halomonas and one Bacillus isolate that, when used to inoculate young alfalfa seedlings, stimulate plant growth in the presence of 1% NaCl, a level that significantly inhibits growth of uninoculated plants. The same bacteria used in the inoculation were recovered from surface sterilized alfalfa roots, indicating the ability of the inoculum to become established as an endophyte. The results with these isolates have exciting promise for enhancing the growth of inoculated alfalfa in salty soil.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Salt-Tolerant Halophyte Rhizosphere Bacteria Stimulate Growth of Alfalfa in Salty Soil

et al. 2019

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The protection of Salicornia rubra from ultraviolet radiation by betacyanins and phenolic compounds

Jensen

2021

Plant Enviro Interactions

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Salicornia rubra A. Nelson is an annual, halophilic, stem-succulent plant species commonly found in salt playas (Russell, 1883) of the Great Basin Desert of the United States (Khan et al., 2001;Weber, 2016). The floor of the Great Basin occurs at an elevation of approximately 1400 m above mean sea level, which increases the intensity of ultraviolet radiation compared with sea level (Blumthaler et al., 1997). Ultraviolet radiation can damage DNA directly by disrupting the phosphodiester backbone of DNA (Sinha & Häder, 2002), and indirectly by the generation of reactive oxygen species, which leads to DNA fragmentation via oxidative stress (de Jager et al., 2017). Salt playas are frequently occupied by shallow lakes in the spring that evaporate in the summer, leaving white evaporites, mainly NaCl, on the surface and in the upper layers of the soil (Khan et al., 2001). Thus, in addition to high levels of ultraviolet radiation, these plants

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Mechanisms of microbes to combat salinity in soil by producing secondary metabolites

et al. 2021

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The Impact of Lake Bonneville and Lake Lahontan on the Halophytes of the Great Basin

Cited by 4 publications

References 57 publications

Salt-Tolerant Halophyte Rhizosphere Bacteria Stimulate Growth of Alfalfa in Salty Soil

Salt-Tolerant Halophyte Rhizosphere Bacteria Stimulate Growth of Alfalfa in Salty Soil

The protection of Salicornia rubra from ultraviolet radiation by betacyanins and phenolic compounds

Mechanisms of microbes to combat salinity in soil by producing secondary metabolites

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