• Pierce's disease of grapevine

  General Xylella fastidiosa is a gram-negative bacterium which is limited to xylem tissue. It has many hosts, many of which show minor or no symptoms. More and more plant species are discovered as host

• Wheat bunt

  General Tilletia tritici and Tilletia laevis only differ in one gene and easily hybridize. There is debate whether they should indeed be considered separate species, since they cause the exact same sy

• Bacterial spot

  General Xanthomonas vesicatoria is a bacterium that causes bacterial leaf spot on peppers and tomatoes. Damage symptoms Xanthomonas vesicatoria in tomato causes small, water-soaked spots on leaves whi

• Powdery mildew

  General Powdery mildew is a fungal disease that is caused by many different species of fungi such as Erysiphe, Podosphaera, Oïdium, Leveillula. Damage symptoms Powdery mildew symptoms are fairly simil

• Leaf stripe

  General Pyrenophora graminea is a disease of Barley that causes significant yield losses. Damage symptoms Symptoms first occur on the first, second and third leaf and subsequently on other leaves. Yel

• Bacterial soft rot, bacterial stem rot

  General Erwinia carotovora subsp. carotovora has recently been renamed Pectobacterium carotovora . It is one of the pectolytic bacteria causing extensive bacterial rots (bacterial soft rot, bacterial

• Bacterial canker of tomato

  General Clavibacter is a quarantine organism in Europe, which means that strong efforts are used to prevent the bacterium from entering. When the occasional infection is found, strict measures are tak

• Angular leaf spot

  General Xanthomonas fragariae is a leaf spot disease found in strawberry. Damage symptoms Xanthomonas fragariae initially causes small, water-soaked lesions on the underside of the leaf. They enlarge

• Gummy stem blight

  General Mycosphaerella cucumis (Didymella bryoniae) is a fungal plant pathogen that causes gummy stem blight. Damage symptoms Mycosphaerella cucumis in cucumber causes brown lesions on the foot and hi

• Black root rot of cucurbits

  General Phomopsis sclerotioides is a plant pathogen infecting cucurbits, causing black root rot of cucurbits. Damage symptoms Phomopsis sclerotioides causes grey-black spots with a dark demarcation li