Morphogenesis in a population of Urosoma salmastra collected from saline soil in Weinan, China, was investigated using protargol staining. The main morphogenetic event that characterizes U. salmastra is the inclusion of cirrus III/2 in the formation of the frontoventra-transverse cirral anlagen. We also provide small subunit ribosomal DNA gene sequences for a population of U. salmastra and for two populations of U. emarginata. The molecular phylogeny indicates that Urosoma is not monophyletic, viz, U. emarginata branches separately from its congeners and the closest relative of U. salmastra is Oxytricha granulifera.
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http://dx.doi.org/10.1016/j.ejop.2017.08.003 | DOI Listing |
Microb Genom
January 2025
Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, USA.
Members of the phylum inhabit a wide range of ecosystems including soils. We analysed the global patterns of distribution and habitat preferences of various lineages across major ecosystems (soil, engineered, host-associated, marine, non-marine saline and alkaline and terrestrial non-soil ecosystems) in 248 559 publicly available metagenomic datasets. Classes , , and were highly ubiquitous and showed a clear preference to soil over non-soil habitats, while classes and showed preferences to non-soil habitats.
View Article and Find Full Text PDFSci Rep
January 2025
College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, 311 East Nongda Rd, Urumqi, 830052, China.
Water conveyance channels in cold and arid regions pass through several saline-alkali soil areas. Canal water leakage exacerbates the salt expansion traits of such soil, damaging canal slope lining structures. To investigate the mechanical properties of saline clay, this study conducted indoor tests, including direct shear, compression, and permeation tests, and scanning electron microscopy (SEM) analysis of soil samples from typical sites.
View Article and Find Full Text PDFJ Hazard Mater
January 2025
Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education) and Dalian POCT Laboratory, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China. Electronic address:
Remediation of soil contaminated with long-chain hydrocarbons and affected by salinization poses a considerable challenge. The isolation of a bacterial strain, identified as Pseudomonas aeruginosa DL, from petroleum-contaminated saline-alkali soil has been reported in this study. The strain demonstrated a high capacity to degrade long-chain alkanes and exhibited adaptability to saline-alkali conditions.
View Article and Find Full Text PDFPlants (Basel)
January 2025
College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
Soil salinization severely restricts the growth and development of crops globally, especially in the northwest Loess Plateau, where apples constitute a pillar industry. Nanomaterials, leveraging their unique properties, can facilitate the transport of nutrients to crops, thereby enhancing plant growth and development under stress conditions. To investigate the effects of nano zinc oxide (ZnO NP) on the growth and physiological characteristics of apple self-rooted rootstock M9-T337 seedlings under saline alkali stress, one-year-old M9-T337 seedlings were used as experimental materials and ZnO NPs were used as donors for pot experiment.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Xinjiang Key Laboratory of Special Environmental Microbiology, Institute of Microbiology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China.
Soil salinization poses a significant challenge to global agriculture, particularly in arid and semi-arid regions like Xinjiang. , a halophytic plant adapted to saline-alkaline conditions, harbors endophytic microorganisms with potential plant growth-promoting properties. In this study, 177 endophytic bacterial strains were isolated from , and 11 key strains were identified through functional screening based on salt tolerance, nutrient solubilization, and growth-promoting traits.
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