Article
Plant Sciences
Qingqing Fu, Jing Yang, Kangzhuang Zhang, Kaixin Yin, Gaoqing Xiang, Xiao Yin, Guotian Liu, Yan Xu
Summary: This study investigates the role of the PvCRN11 protein in resistance against downy mildew in grapes. The results show that PvCRN11 induces plant immune response and inhibits the colonization of downy mildew pathogens. This research provides potential application of PvCRN11 as a protectant against downy mildew in grape production.
Article
Plant Sciences
Isabella Busato, Oriana Bertaiola, Silvio Tundo, Chiara Guarnerio, Marco Lucchetta, Luca Sella, Giovanna Pressi, Francesco Favaron
Summary: The negative impact of conventional fungicides has led to an increased interest in safer alternatives such as plant secondary metabolites. Plant cell culture technology can provide homogeneous biomasses with specific chemical characteristics. A phytocomplex from a selected cell line of Salvia officinalis demonstrated high effectiveness against the grapevine downy mildew pathogen.
Article
Agronomy
Diego Llamazares De Miguel, Amaia Mena-Petite, Ana Maria Diez-Navajas
Summary: Grapevine is annually affected by diseases, such as downy mildew caused by Plasmopara viticola, which can lead to economic losses. Conventional chemical fungicides and copper-based formulations used to combat these diseases have environmental consequences. Therefore, alternative plant protection products (PPP) containing basic substances like chitosan, Equisetum arvense, lecithins, and Salix cortex can be promoted as more sustainable treatments for grapevine diseases.
Article
Plant Sciences
Ying Wang, Xiao Cao, Yulei Han, Xing Han, Zhilei Wang, Tingting Xue, Qiuhong Ye, Liang Zhang, Xinyao Duan, Hua Wang, Hua Li
Summary: The study tested the ability of Kaolin particle film (KPF) pretreatment to protect grapevine leaves from Plasmopara viticola and analyzed the mode of action of KPF. KPF application reduced disease severity and the development of intercellular hyphae. Ultrastructure observations showed KPF deposition and stomatal obstruction, indicating that KPF protected plants by preventing pathogen adhesion and invasion, while also activating host defense responses.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Tiemei Li, Xin Cheng, Xiaowei Wang, Guanggui Li, Bianbian Wang, Wenyuan Wang, Na Zhang, Yulei Han, Bolei Jiao, Yuejin Wang, Guotian Liu, Tengfei Xu, Yan Xu
Summary: The study revealed that VvNAC72 in grapevine negatively modulates detoxification of MG by repressing VvGLYI-4, enhancing resistance to downy mildew. This is achieved, at least in part, by regulating MG-associated ROS through a salicylic acid-mediated defense pathway.
Article
Agriculture, Multidisciplinary
Aleksandra Burdziej, Anthony Bellee, Enora Bodin, Josep Valls Fonayet, Noel Magnin, Anna Szakiel, Tristan Richard, Stephanie Cluzet, Marie-France Corio-Costet
Summary: Three recognized plant defense stimulators (PDS), methyl jasmonate (MeJA), benzothiadiazole (BTH) and phosphonates (PHOS), were shown to confer resistance to the biotrophic pathogen Plasmopara viticola when sprayed on grapevine Vitis vinifera cuttings. The effects on molecular defense-related genes and polyphenol content were observed, with specific signaling pathways for each elicitor and some cross-talks. These results provide evidence of the different modes of action of PDS in sustainable viticulture.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Review
Microbiology
Kseniia Koledenkova, Qassim Esmaeel, Cedric Jacquard, Jerzy Nowak, Christophe Clement, Essaid Ait Barka
Summary: This review provides an overview of Plasmopara viticola, the causal agent of grapevine downy mildew, including its history, distribution, epidemiology, replication and infection mechanisms, symptoms, host-pathogen interactions, host resistance, and control methods. Due to the negative environmental impact of chemical pesticides and the development of resistant strains, researchers are actively seeking sustainable alternatives, such as the use of biocontrol agents.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Multidisciplinary Sciences
Nicolas Vigneron, Jerome Grimplet, Eric Remolif, Markus Rienth
Summary: This study aimed to investigate the transcriptomic changes induced by oregano essential oil vapour (OEOV) in DM-infected grapevines. The results showed that OEOV significantly reduced DM sporulation and its efficacy appears to involve genes from a putative signalling pathway that has yet to be characterized, rather than stilbene synthesis.
SCIENTIFIC REPORTS
(2023)
Article
Plant Sciences
David M. M. Gadoury, Surya Sapkota, Lance Cadle-Davidson, Anna Underhill, Tyler McCann, Kaitlin M. M. Gold, Nikita Gambhir, David B. B. Combs
Summary: Nighttime applications of germicidal ultraviolet effectively suppressed three diseases of grapevine, including powdery mildew, downy mildew, and sour rot. UV-C light with a peak wavelength of 254 nm and a full width at half maximum (FWHM) of 5 nm strongly inhibited the germination of conidia of Erysiphe necator. Exposure to UV-C at a dose of 100 J/m(2) during darkness reduced infection and sporulation of Plasmopara viticola by over 70%.
Article
Agronomy
Karin Weitbrecht, Stefan Schwab, Christoph Rupp, Evi Bieler, Markus Duerrenberger, Gottfried Bleyer, Stefan Schumacher, Hanns-Heinz Kassemeyer, Rene Fuchs, Eberhard Schluecker
Summary: The study demonstrates that copper minimization through microencapsulation is feasible, with CuCaps showing comparable effectiveness to commercially available copper-based fungicides in reducing disease severity on leaves and grape clusters. In challenging years, CuCaps could serve as a valuable option for organic farmers, providing a promising alternative to traditional copper-based products.
Article
Plant Sciences
Younes M. Rashad, Hany H. A. El-Sharkawy, Bassam E. A. Belal, Elsayed S. Abdel Razik, Doaa A. Galilah
Summary: The study demonstrated that spraying grapevines with SiNPs significantly enhanced defense-related gene expression and reduced disease severity, leading to improved shoot length, yield, and berry quality. However, it also showed cytotoxic and genotoxic effects at this direct dosage, highlighting the need for further research on SiNPs residue in edible plant parts and evaluation of pre-harvest interval, toxicity index, and risk assessment before recommending its use.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Goncalo Laureano, Ana Rita Cavaco, Ana Rita Matos, Andreia Figueiredo
Summary: Research has shown that grapevines exhibit an up-regulation of plastidial FA desaturases genes upon challenge from the biotrophic pathogen Plasmopara viticola, leading to a higher content of polyunsaturated fatty acids (PUFAs) in chloroplast lipids. This discovery highlights the key role of FA desaturases in membrane remodelling and signalling in grapevine defense against biotrophic pathogens.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Horticulture
Younes M. Rashad, Hany H. A. El-Sharkawy, Mosaad A. El-kenawy, Doaa A. Galilah
Summary: This study investigated the use of kaolin spraying as an anti-oomycete substance to control P. viticola and improve grapevines growth and production. Results showed that kaolin spraying at 3% significantly reduced infection severity (80.1%), increased phenolic compounds and enzyme activities, and improved various growth parameters and yield per grapevine.
SCIENTIA HORTICULTURAE
(2023)
Article
Agronomy
Francesco Calzarano, Leonardo Seghetti, Giancarlo Pagnani, Elisa Giorgia Metruccio, Stefano Di Marco
Summary: This study evaluated the effectiveness of copper chabasite-rich zeolitite against downy mildew in a two-year experiment conducted in Italian vineyards. The results showed that the copper zeolitite had similar control effects as conventional fungicides. Furthermore, the treated vines had a lower percentage of infected bunches and berries, and the wines made from these vines had increased polyphenol content and color intensity.
Article
Horticulture
Ines Hernandez, Salvador Gutierrez, Sara Ceballos, Ruben Iniguez, Ignacio Barrio, Javier Tardaguila
Summary: The study explores novel sensing technologies and artificial intelligence applications for assessing downy mildew in grapevine under laboratory conditions. Machine vision and hyperspectral imaging were used for early detection and quantification of downy mildew, showing promising results for non-invasive disease assessment in grapevine leaves.
News Item
Plant Sciences
J. -S. Reynard, S. Schumacher, W. Menzel, J. Fuchs, P. Bohnert, M. Glasa, T. Wetzel, R. Fuchs
Article
Plant Sciences
Stefan Schumacher, Katrin Grosser, Ralf Thomas Voegele, Hanns-Heinz Kassemeyer, Rene Fuchs
FRONTIERS IN PLANT SCIENCE
(2020)
Article
Agronomy
Karin Weitbrecht, Stefan Schwab, Christoph Rupp, Evi Bieler, Markus Duerrenberger, Gottfried Bleyer, Stefan Schumacher, Hanns-Heinz Kassemeyer, Rene Fuchs, Eberhard Schluecker
Summary: The study demonstrates that copper minimization through microencapsulation is feasible, with CuCaps showing comparable effectiveness to commercially available copper-based fungicides in reducing disease severity on leaves and grape clusters. In challenging years, CuCaps could serve as a valuable option for organic farmers, providing a promising alternative to traditional copper-based products.
Article
Virology
Noemi Messmer, Patricia Bohnert, Stefan Schumacher, Rene Fuchs
Summary: Viral diseases in viticulture lead to annual losses in grape production quantity and quality. Preventive measures such as testing propagation material are taken to keep the vines healthy. The most common virus in southwestern German wine-growing regions is GLRaV-1, while GLRaV-3 is almost never found. In addition to regulated examinations, a one-time test was conducted on GPGV, which was found in 17.2% of samples.
Article
Microbiology
Lars Askani, Stefan Schumacher, Rene Fuchs
Summary: Grapevine downy mildew, caused by the obligate biotrophic oomycete Plasmopara viticola, is a challenging disease in viticulture. The pathogen evades plant immunity by secreting effector molecules, with one important family being the necrosis- and ethylene-inducing peptide 1 (Nep1)-like proteins. These proteins exist in cytotoxic and non-cyctotoxic forms and play crucial roles in the growth and pathogenicity of plant pathogenic microorganisms.
Article
Agronomy
Karl Bleyer, Gottfried Bleyer, Stefan Schumacher
Summary: Resistance against powdery mildew and downy mildew in grapevines increases during leaf and berry development. Treating only the susceptible leaves in the upper half of the canopy during the last treatment before harvest (LTBH) can reduce the use of fungicides without affecting the health of the fruit.
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2023)
Correction
Agronomy
Karl Bleyer, Gottfried Bleyer, Stefan Schumacher
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2023)