Salinity stress is one of the more prevailing abiotic stresses which results in significant losses in agricultural crop production, particularly in arid and semi-arid areas [...].
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6567217 | PMC |
| http://dx.doi.org/10.3390/ijms20102408 | DOI Listing |
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Useful or merely convenient? On the issue of a suitability of enzymatic antioxidant activity as a proxy for abiotic stress tolerance.
J Exp Bot
December 2024
School of Biological Sciences, The University of Western Australia, Perth, WA 6009, Australia.
During their lifespan, plants are often exposed to a broad range of stresses that change their redox balance and lead to accumulation of reactive oxygen species (ROS). The traditional view is that this comes with negative consequences to cells structural integrity and metabolism and, to prevent this, plants evolved a complex and well-coordinated antioxidant defence system that relies on the operation of a range of enzymatic and non-enzymatic antioxidants (AO). Due to the simplicity of measuring their activity, and in the light of the persistent dogma that stress-induced ROS accumulation is detrimental for plants, it is not surprising that enzymatic AO have often been advocated as suitable proxies for stress tolerance, as well as potential targets for improving tolerance traits.
View Article and Find Full Text PDFBackground And Aims: Since salinity stress may occur across stages of rice (Oryza sativa L.) crop growth, understanding the effects of salinity at reproductive stage is important although it has been much less studied than at seedling stage.
Methods: In this study, lines from the Rice Diversity Panel 1 (RDP1) and the 3000 Rice Genomes (3KRG) were used to screen morphological and physiological traits, map loci controlling salinity tolerance through genome-wide association studies (GWAS), and identify favorable haplotypes associated with reproductive stage salinity tolerance.
Preliminary assessment of seed heteromorfism as an adaptive strategy of Colobanthus quitensis under saline conditions.
Sci Rep
December 2024
Laboratorio de Biotecnología y Estudios Ambientales, Departamento de Ciencias y Tecnología Vegetal, Escuela de Ciencias y Tecnologías, Universidad de Concepción, Campus Los Ángeles, 4440000, Concepción, Chile.
Colobanthus quitensis is known for enduring extreme conditions, such as high salinity in Antarctica, making it an excellent model for studying environmental stress. In plant families, variations in seed color heteromorphism have been linked to various germination under stress conditions. Preliminary laboratory observations indicated that dark brown seeds of C.
View Article and Find Full Text PDFSalinity stress mitigation in wheat through synergistic application of ascorbic acid, nanoparticles and Salvadora oleoides extract.
Sci Rep
December 2024
Plant Production Department, College of Food and Agriculture Sciences, King Saud University, 11451, Riyadh, Saudi Arabia.
Salinity stress adversely affects wheat growth and productivity, necessitating effective mitigation strategies. This study investigates the combined impact of ascorbic acid (AsA), silver nanoparticles (NPs), and Salvadora oleoides aqueous leaf extract (LE) on wheat tolerance to salinity stress. A randomized complete design (RCD) was employed with fourteen treatments: T1 (5 mM AsA), T2 (10 mM AsA), T3 (20 ppm AgNPs), T4 (40 ppm AgNPs), T5 (5% S.
View Article and Find Full Text PDFMaize drought protection by Azospirillum argentinense Az19 requires bacterial trehalose accumulation.
Appl Microbiol Biotechnol
December 2024
Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata (UNMdP), Ruta Provincial 226 Km 73.5, B7620, Balcarce, Buenos Aires, Argentina.
Azospirillum argentinense Az19 is an osmotolerant plant growth-promoting bacterium that protects maize plants from drought. In this work, we explored the role of trehalose in the superior performance of Az19 under stress. The trehalase-coding gene treF was constitutively expressed in Az19 through a miniTn7 system.
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