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Current insights into molecular mechanisms of environmental stress tolerance in Cyanobacteria.
World J Microbiol Biotechnol
January 2025
Systems Biology for Biofuels Group, International Centre for Genetic Engineering and Biotechnology, ICGEB Campus, Aruna Asaf Ali Marg, New Delhi, 110067, India.
The photoautotrophic nature of cyanobacteria, coupled with their fast growth and relative ease of genetic manipulation, makes these microorganisms very promising factories for the sustainable production of bio-products from atmospheric carbon dioxide. However, both in nature and in cultivation, cyanobacteria go through different abiotic stresses such as high light (HL) stress, heavy metal stress, nutrient limitation, heat stress, salt stress, oxidative stress, and alcohol stress. In recent years, significant improvement has been made in identifying the stress-responsive genes and the linked pathways in cyanobacteria and developing genome editing tools for their manipulation.
View Article and Find Full Text PDFA bHLH transcription factor RrUNE12 regulates salt tolerance and promotes ascorbate synthesis.
Plant Cell Rep
January 2025
Engineering Research Center of National Forestry and Grassland Administration for Rosa Roxburghii, Agricultural College, Guizhou University, Guiyang, 550025, People's Republic of China.
RrUNE12 binds to the RrGGP2 promoter to facilitate biosynthesis of AsA in Rosa roxburghii fruit. Furthermore, RrUNE12 upregulates antioxidant-related genes and maintains ROS homeostasis, thereby improving tolerance to salt stress. L-ascorbic acid (AsA) plays an essential role in stress defense as a major antioxidant in plant cells.
View Article and Find Full Text PDFCan spatial self-organization inhibit evolutionary adaptation?
J R Soc Interface
January 2025
The Swiss Institute for Dryland Environmental and Energy Research, BIDR, Ben-Gurion University of the Negev, Midreshet Ben-Gurion 8499000, Israel.
Plants often respond to drier climates by slow evolutionary adaptations from fast-growing to stress-tolerant species. These evolutionary adaptations increase the plants' resilience to droughts but involve productivity losses that bear on agriculture and food security. Plants also respond by spatial self-organization, through fast vegetation patterning involving differential plant mortality and increased water availability to the surviving plants.
View Article and Find Full Text PDFEffect of transgene on salt tolerance of tobacco.
Transgenic Res
January 2025
Forest Department, College of Forestry, Hebei Agricultural University, Baoding, 071000, China.
To explore the effects of salt-tolerance gene accumulation on salt tolerance in transgenic plant, we used four types of plant expression vector (N27, N28, N29, and N30) carrying mtlD, mtlD + gutD, mtlD + gutD + BADH, mtlD + gutD + BADH + sacB genes respectively, to transform tobacco through Agrobacterium-mediated method. Transgenic lines were identified through polymerase chain reaction (PCR) detection. Transgenic lines and non-transgenic plant (CK) were subjected to 6‰ sodium chloride solution stress; then, fluorescence quantitative PCR (FQ-PCR) and salt tolerance indexes were used to assess characteristics.
View Article and Find Full Text PDFABC-type salt tolerance transporter genes are abundant and mutually shared among the microorganisms of the hypersaline Sambhar Lake.
Extremophiles
January 2025
Microbiology Laboratory, Department of Botany (DST-FIST and UGC-DRS Funded), Institute of Science, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India.
To fish-out novel salt-tolerance genes, metagenomic DNA of moderately saline sediments of India's largest hypersaline Sambhar Lake was cloned in fosmid. Two functionally-picked clones helped the Escherichia coli host to tolerate 0.6 M NaCl.
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