Botryosphaeria dieback on the grapevine is caused by Botryosphaeriaceae fungi, which threatens the yield and quality of grapes. At present, chemical control strategies are often observed to be ineffective in controlling the disease worldwide. Improving our understanding of the molecular mechanisms that confer resistance to pathogens would facilitate the development of more pathogen-tolerant grape varieties. Here, we used RNA sequencing analysis to profile the transcriptome of grapevine green shoots infected with Lasiodiplodia theobromae over a time course of 4, 8 and 12 hours post inoculation. A total of 5181 genes were identified as differentially expressed genes (DEGs), and DEGs were more abundant over time. Further analysis revealed that many of these DEGs are involved in plant-pathogen interactions, hormone signal transduction and phenylpropanoid biosynthesis pathways, suggesting that innate immunity, phytohormone signaling and many phenylpropanoid compounds, which constitute a complex defense network in plants, are involved in the response of grapevine against to L. theobromae infection. This study provides novel insights into the molecular mechanisms of plant-pathogen interactions that will be valuable for the genetic improvement of grapevines.
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http://dx.doi.org/10.1038/s41598-019-41796-9 | DOI Listing |
Hortic Res
January 2025
Ecophysiologie et Génomique Fonctionnelle de la Vigne (EGFV), University of Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, Villenave d'Ornon, France.
Sugar limitation has dramatic consequences on plant cells, which include cell metabolism and transcriptional reprogramming, and the recycling of cellular components to maintain fundamental cell functions. There is however no description of the contribution of epigenetic regulations to the adaptation of plant cells to limited carbon availability. We investigated this question using nonphotosynthetic grapevine cells (, cv Cabernet Sauvignon) cultured with contrasted glucose concentrations.
View Article and Find Full Text PDFFood Chem X
January 2025
Centre of Molecular and Environmental Biology, Department of Biology, University of Minho, Campus de Gualtar, Braga, Portugal.
This study used integrative omics to address the response of key elements of the grapevine holobiont to contrasted pedoclimatic conditions found in distinct subregions of Douro Valley (Portugal). A metabolic OPLS-DA model predicted with 100 % accuracy the geographic origin of berries; higher UV radiation, higher temperature and lower precipitation stimulated the accumulation of phenolic acids, flavonols and malvidin conjugates, in detriment of amino acids, organic acids, flavan-3-ols, proanthocyanidins and non-malvidin anthocyanins. Metabarcoding showed a trade-off between bacteria and fungal diversity among subregions, with , and acting as intraregional microbial markers.
View Article and Find Full Text PDFFEMS Microbiol Ecol
January 2025
University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, 41500 (Viopolis) Larissa, Greece.
The role of microbial terroir for enhancing the geographical origin of wines is well appreciated. Still, we lack a good understanding of the assembly mechanisms driving carposphere grapevine microbiota. We investigated the role of cultivar, vintage, terroir units (TUs) and vineyard geographic location on the composition of the carpospheric microbiota of three important cultivars in the viticultural zone of Drama, Greece using amplicon sequencing.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
College of Life Science, Qingdao Agricultural University, Qingdao, China. Electronic address:
Basic leucine zipper (bZIP) transcription factors serve as crucial regulators in plants' response to abiotic stress; however, its function in grapevine heat tolerance is still largely unknown. Here, we undertook a comprehensive investigation of grape genome, leading to the identification of 65 VvbZIP genes, among which 16 VvbZIPs were significantly induced under heat stress. Overexpression of VvbZIP36 enhanced heat tolerance in grape calli, while virus-induced gene silencing (VIGS) of VvbZIP36 reflected thermal sensitivity.
View Article and Find Full Text PDFPlant Biotechnol J
January 2025
Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region, Ministry of Agriculture, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, China.
Here, we evaluated the role of ethylene in regulating the NaHCO stress tolerance of grapevines and clarified the mechanism by which VvERF1B regulates the response to NaHCO stress. The exogenous application of ACC and VvACS3 overexpression in grapevines and grape calli revealed that ethylene increased NaHCO stress tolerance, and this was accompanied by increased plasma membrane H-ATPase (PMA) activity. The expression of VvERF1B was strongly induced by ACC, and overexpression of this gene in grapevines conferred increased NaHCO stress tolerance and enhanced PMA activity and H and oxalate secretion.
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