The role of linker H1 histones in plant defence has recently been investigated. Sheikh et al. found that Arabidopsis thaliana plants that were lacking all three H1 proteins showed increased disease resistance, but when primed, failed to induce enhanced resistance. Differences in epigenetic patterns could be the cause of defective priming.
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http://dx.doi.org/10.1016/j.tig.2023.06.007 | DOI Listing |
Pest Manag Sci
January 2025
Dpto. Microbiología, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.
Background: Chitin is a crucial component of fungal cell walls and an effective elicitor of plant immunity; however, phytopathogenic fungi have developed virulence mechanisms to counteract the activation of this plant defensive response. In this study, the molecular mechanism of chitin-induced suppression through effectors involved in chitin deacetylases (CDAs) and their degradation (EWCAs) was investigated with the idea of developing novel dsRNA-biofungicides to control the cucurbit powdery mildew caused by Podosphaera xanthii.
Results: The molecular mechanisms associated with the silencing effect of the PxCDA and PxEWCAs genes were first studied through dsRNA cotyledon infiltration assays, which revealed a ≈80% reduction in fungal biomass and a 50% decrease in gene expression.
Int J Mol Sci
January 2025
Institute of Cotton, Hebei Academy of Agriculture and Forestry Sciences/Key Laboratory of Cotton Biology and Genetic Breeding in Huanghuaihai Semiarid Area, Ministry of Agriculture and Rural Affairs, Shijiazhuang 050000, China.
SKP1 constitutes the Skp1-Cullin-F-box ubiquitin E3 ligase (SCF), which plays a role in plant growth and development and biotic and abiotic stress in ubiquitination. However, the response of the gene family to abiotic and biotic stresses in cotton has not been well characterized. In this study, a total of 72 genes with the conserved domain of SKP1 were identified in four Gossypium species.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Low-Carbon Transition R&D Department, Korea Institute of Industrial Technology (KITECH), 89, Yangdaegiro-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si 31056, Republic of Korea.
Protocatechuate acid (PCA) is a phenolic acid naturally synthesized by various organisms. Protocatechuic acid is synthesized by plants for physiological, metabolic functions, and self-defense, but extraction from plants is less efficient compared to the microbial culture process. The microbial synthesis of protocatechuic acid is sustainable and, due to its high yield, can save energy consumption when producing the same amount.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan 31000, Republic of Korea.
Light is a vital regulator of photosynthesis, energy production, plant growth, and morphogenesis. Although these key physiological processes are well understood, the effects of light quality on the pigment content, oxidative stress, reactive oxygen species (ROS) production, antioxidant defense systems, and biomass yield of plants remain largely unexplored. In this study, we applied different light-emitting diode (LED) treatments, including white light, red light, blue light, and a red+blue (1:1) light combination, to evaluate the traits mentioned above in alfalfa ( L.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
College of Plant Protection, Henan Agricultural University, Zhengzhou 450046, China.
B-box (BBX) transcription factors play crucial roles in plant growth, development, and defense responses to biotic and abiotic stresses. In this study, we cloned a BBX transcription factor gene, from cucumber and analyzed its role in the plant's defense against the feeding of . is expressed throughout all developmental stages in cucumber, with the highest expression in the leaves.
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