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Bacterial seedling blight of rice (Oryza sativa), caused by pathogen Burkholderia plantarii [4] Early blight of potato and tomato, caused by species of the ubiquitous fungal genus Alternaria Leaf blight of the grasses e.g. Ascochyta species [ 5 ] and Alternaria triticina that causes blight in wheat [ 6 ]
Bacterial diseases; Bacterial spot Xanthomonas euvesicatoria pv. citrumelo: Black pit (fruit) Pseudomonas syringae: Blast Pseudomonas syringae: Citrus canker: Xanthomonas citri pv. citri: Citrus variegated chlorosis Xylella fastidiosa: Huanglongbing = citrus greening Candidatus Liberibacter asiaticus. Candidatus L. africanus
Southern blight Sclerotium rolfsii Athelia rolfsii [teleomorph] Thread blight = Hypochnus leaf blight Corticium stevensii = Pellicularia koleroga = Hypochnus ochroleucus. Valsa canker Valsa ceratosperma Cytospora sacculus [anamorph] Violet root rot Helicobasidium mompa: White root rot Scytinostroma galactinum = Corticium galactinum. White rot
Thorny stem blight Tunstallia aculeata. Thread blight Marasmius tenuissimus. Twig blight Patellaria theae. Twig dieback, stem canker [2] [1] Macrophoma theicola [1] Velvet blight: Septobasidium bogoriense Septobasidium pilosum Septobasidium theae. Violet root rot Sphaerostilbe repens. White root rot Rigidoporus microporus = Rigidoporus lignosus ...
Plant diseases are diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [1] Organisms that cause infectious disease include fungi , oomycetes , bacteria , viruses , viroids , virus -like organisms, phytoplasmas , protozoa , nematodes and parasitic plants . [ 2 ]
Xanthomonas actively kill other bacterial using type IV secretion system and defend itself from amoeba using type VI secretion system. [19] [20] [1] To prevent infections, limiting the introduction of the bacteria is key. Some resistant cultivars of certain plant species are available as this may be the most economical means for controlling ...
An example of this is the partnership with the leaf-mining fly Scaptomyza flava, which creates holes in leaves during oviposition that the pathogen can take advantage of. [22] The role of taxis in P. syringae has not been well-studied, but the bacteria are thought to use chemical signals released by the plant to find their host and cause infection.
Upon initial infection, the bacteria remain in the epiphytic stage; however, the harmful endophytic stage is reached when the bacteria actually enter the plant host through natural openings. [2] In general, the genes that contribute significantly to the plant-bacteria relationship are the avirulence ( avr ) genes, the hypersensitivity response ...