You'll also want to learn about how to treat gummosis. Find out everything you need to know in … L. J. Klotz and H. S. Fawcett The in 1930 published the results Plant Pathology Short Lecture Notes: Bacterial Citrus Canker- Symptoms, Causal Organism, Etiology, Disease Cycle and Control Measures of Bacterial Canker Ø Bacteria multiply in the intercellular space of the cortical region. Citrus in Ghana are seriously affected by gummosis, which causes trunk cankers and tree death. Light brown to grayish spots with dark margin and yellow halo. The causal organism of this disease is Phytophthora citrophthora . What is gummosis? Phytophthora citrophthora was confirmed as the causal agent of the disease. Raised, tumor-like growth with yellow halo on young fruits. If you have stone fruit trees, you'll need to learn what causes gummosis disease. thora, was the causal organism. Phytophthora citrophthora was confirmed as the causal agent of the disease. mandarin The discovery of the true andcause of foot rot made it possible to study the susceptibility of the many varieties of citrus. Citrus gummosis Causal organism: Phytophthora citrophthora Symptoms It is a soil borne fungus. Causal Organism The bacterium causing citrus canker was known as Xanthomonas campestris pv. Flat lesions, with sunken brown center on older fruit. Citrus gummosis is a disease of citrus in which we can see the gum production on root and trunk. Ø The infection is favoured by mild temperature and humid weather. symptoms are the bark of stem and branches are cracked. The disease was originally related to Phytophthora parasitica but more recently to Lasiodiplodia theobromae. Hosts Citrus. Popular notes are given on the symptoms and control of citrus gummosis [Phytophthora sp. The aetiology of citrus gummosis in Ghana was reassessed in the same locations surveyed by previous studies. Primary colonization is on roots causing discolouration, root decay, bark degradation at collar region and leaf falling. The aetiology of citrus gummosis in Ghana was reassessed in the same locations surveyed by previous studies. The bacterium of citrus canker has a short life in soil or in fallen leaves. citri.