Grapevine trunk diseases

Kalmusia variispora (Didymosphaeriaceae, Dothideomycetes) Associated with the Grapevine Trunk Disease Complex in Cyprus

mycolabadmin

Kalmusia variispora is a fungus that causes trunk diseases in grapevines, resulting in wood discoloration and plant decline. This study identified the fungus in Cyprus vineyards and demonstrated its ability to infect and damage grapevine wood. The fungus produces enzymes that break down plant cell walls, with stronger enzyme production correlating to more severe disease. Understanding this pathogen is important for developing better disease management strategies in vineyards.

Native Bacteria Are Effective Biocontrol Agents at a Wide Range of Temperatures of Neofusicoccum parvum, Associated with Botryosphaeria Dieback on Grapevine

mycolabadmin

Researchers from Chile identified native bacteria (specifically Pseudomonas strains) that effectively prevent a destructive fungal disease affecting grapevines. These bacteria can work across a wide range of temperatures and significantly reduce fungal growth both in laboratory tests and in actual vineyard conditions. This discovery offers an environmentally friendly alternative to chemical fungicides for protecting grapevines, particularly important as younger vines appear more vulnerable to infection.

Evaluation of electrolyzed water to control fungal trunk pathogens in grapevine nurseries

mycolabadmin

Growers struggle with fungal diseases that infect grapevine nurseries, reducing the quality of planting material. Researchers tested electrolyzed water—a solution made from salt and water using electricity—as a sustainable treatment for infected grapevine cuttings. Laboratory tests showed the treatment effectively killed fungal spores and reduced fungal growth. Field trials at a commercial nursery confirmed that treating cuttings with electrolyzed water reduced certain grapevine diseases without harming plant growth.

An Overview of α-Pyrones as Phytotoxins Produced by Plant Pathogen Fungi

mycolabadmin

This comprehensive review examines toxic compounds called α-pyrones that are produced by disease-causing fungi affecting crops and plants. These compounds act as natural poisons that help fungi damage plants, but interestingly, they also have potential medical uses including antibacterial, antifungal, and anti-cancer properties. Researchers have studied how the chemical structure of these compounds relates to their toxicity, which could help develop new herbicides for weed control and treatments for various diseases. The review covers dozens of these compounds and their applications in agriculture, medicine, and biotechnology.

Xylem Sap Mycobiota in Grapevine Naturally Infected with Xylella fastidiosa: A Case Study: Interaction of Xylella fastidiosa with Sclerotinia sclerotiorum

mycolabadmin

Researchers studied the fungi living inside grapevine water-conducting tissues in Mallorca, Spain, where a bacterial disease called Pierce’s disease is spreading. They found both helpful and harmful fungi living alongside the disease-causing bacteria. When they tested what happens when both the bacteria and a fungal pathogen infect grapevines together in controlled conditions, the plants became much more severely damaged than with either pathogen alone, suggesting these microorganisms work together to harm the plant.

Native Bacteria Are Effective Biocontrol Agents at a Wide Range of Temperatures of Neofusicoccum parvum, Associated with Botryosphaeria Dieback on Grapevine

mycolabadmin

Scientists discovered that native bacteria from Chile, particularly Pseudomonas strains, can effectively control a serious fungus that damages grapevines. These bacteria work across a range of temperatures and successfully reduced fungal growth both in laboratory tests and in actual vineyards. This discovery offers a natural, environmentally-friendly alternative to chemical fungicides for protecting grape crops.

High-Resolution Melting assays development for discrimination of fungal pathogens causing Grapevine Trunk Diseases

mycolabadmin

Grapevine Trunk Diseases cause major losses in vineyards worldwide but are difficult to diagnose early because symptoms may not appear for years. This study developed fast and affordable DNA-based tests called HRM assays that can identify ten different disease-causing fungi in grapevines. These tests work by analyzing DNA melting patterns and can even detect infections before symptoms appear, helping vineyard managers make better decisions about plant treatment and removal.

The Structural and Functional Diversities of Bacteria Inhabiting Plant Woody Tissues and Their Interactions with Fungi

mycolabadmin

Bacteria living in tree wood work together with fungi to break down wood and nutrients, which is important for forest health. Some bacteria can protect trees from harmful fungi by fighting them off, making them useful for controlling plant diseases. Understanding how bacteria and fungi interact in wood can help us grow healthier plants, manage tree diseases better, and improve wood decomposition processes.

High-Resolution Melting assays development for discrimination of fungal pathogens causing Grapevine Trunk Diseases

mycolabadmin

Researchers developed quick and affordable DNA tests to identify fungal diseases in grapevines before they show visible symptoms. Using a technique called High-Resolution Melting, the tests can detect ten different disease-causing fungi that damage grape plants. These early detection tools help vineyard owners treat infected plants faster and save money on crop losses.

Disease: Grapevine trunk diseases