List of rice diseases
Encyclopedia
Bacterial diseases
| Bacterial diseases |
|
|---|---|
| Bacterial blight | Xanthomonas oryzae Xanthomonas oryzae Xanthomonas oryzae is a species of proteobacteria. The major host of the bacteria is rice .The species contains two pathovars which are non-European: Xanthomonas oryzae pv. oryzae and Xanthomonas oryzae pv... pv. oryzae = X. campestris pv. oryzae |
| Bacterial leaf streak | Xanthomonas oryzae pv. oryzicola |
| Foot rot | Erwinia chrysanthemi |
| Grain rot | Burkholderia glumae Burkholderia glumae Burkholderia glumae is a Gram-negative soil bacterium.... |
| Pecky rice (kernel spotting) | Damage by bacteria (see also underfungal and miscellaneous diseases) |
| Sheath brown rot | Pseudomonas fuscovaginae Pseudomonas fuscovaginae Pseudomonas fuscovaginae is a fluorescent, Gram-negative soil bacterium that is pathogenic to rice, causing brown sheath rot. The type strain is CCUG 32780.... |
Fungal diseases
| Fungal diseases |
|
|---|---|
| Aggregate sheath spot | Ceratobasidium oryzae-sativae Rhizoctonia oryzae-sativae [anamorph] |
| Black kernel | Curvularia lunata Cochliobolus lunatus Cochliobolus lunatus Cochliobolus lunatus is a fungal plant pathogen.- External links :* *... [teleomorph] |
| Blast (leaf, neck [rotten neck], nodal and collar) | Pyricularia grisea Pyricularia oryzae Magnaporthe grisea Magnaporthe grisea Magnaporthe grisea, also known as rice blast fungus, rice rotten neck, rice seedling blight, blast of rice, oval leaf spot of graminea, pitting disease, ryegrass blast, and Johnson spot, is a plant-pathogenic fungus that causes an important disease affecting rice. It is now known that M... [teleomorph] |
| Brown spot | Cochliobolus miyabeanus Cochliobolus miyabeanus Cochliobolus miyabeanus is a fungus that causes brown spot disease in rice. This disease was the causal agent of the Bengal famine of 1943.It was used by the USA as a biological weapon in Japan during World War II.-Sources:... Bipolaris oryzae [anamorph] |
| Crown sheath rot | Gaeumannomyces graminis |
| Downy mildew | Sclerophthora macrospora Sclerophthora macrospora Sclerophthora macrospora is a plant pathogen.- External links :**... |
| Eyespot | Drechslera gigantea Drechslera gigantea Drechslera gigantea is a plant pathogen that causes eyespot disease on many host plants.- External links :* *... |
| False smut | Ustilaginoidea virens Ustilaginoidea virens Ustilaginoidea virens, perfect sexual stage Villosiclava virens, is a plant pathogen which causes the disease False Smut of rice which reduces both grain yield and grain quality. The disease occurs in more than 40 countries, especially in the rice producing countries of Asia. but also in the U.S.... |
| Kernel smut | Tilletia barclayana Tilletia barclayana Tilletia barclayana is a plant pathogen.- External links :* *... Neovossia horrida |
| Leaf smut | Entyloma oryzae |
| Leaf scald | Microdochium oryzae Cercospora oryzae Sphaerulina oryzina Sphaerulina oryzina Sphaerulina oryzina is a fungal plant pathogen.- External links :* *... [teleomorph] |
| Pecky rice (kernel spotting) | Damage by many fungi including Cochliobolus miyabeanus Cochliobolus miyabeanus Cochliobolus miyabeanus is a fungus that causes brown spot disease in rice. This disease was the causal agent of the Bengal famine of 1943.It was used by the USA as a biological weapon in Japan during World War II.-Sources:... Curvularia Curvularia Curvularia is a hyphomycete fungus which is a facultative pathogen of many plant species and of the soil. Most Curvularia are found in tropical regions, though a few are found in temperate zones.... spp. Fusarium Fusarium Fusarium is a large genus of filamentous fungi widely distributed in soil and in association with plants. Most species are harmless saprobes, and are relatively abundant members of the soil microbial community. Some species produce mycotoxins in cereal crops that can affect human and animal health... spp. Microdochium oryzae Sarocladium oryzae Sarocladium oryzae Sarocladium oryzae is a plant pathogen causing the sheath rot disease of rice. In culture it produces 0.3–0.627 micrograms of helvolic acid and 0.9–4.8 micrograms of cerulenin per milliliter of culture medium. The level of helvolic acid correlated with a higher incidence of sheath rot... and other fungi. |
| Root rots | Fusarium Fusarium Fusarium is a large genus of filamentous fungi widely distributed in soil and in association with plants. Most species are harmless saprobes, and are relatively abundant members of the soil microbial community. Some species produce mycotoxins in cereal crops that can affect human and animal health... spp. Pythium Pythium Pythium is a genus of parasitic oomycete. Most species are plant parasites, but Pythium insidiosum is an important pathogen of animals... spp. Pythium dissotocum Pythium dissotocum Pythium dissotocum is a plant pathogen.- External links :* *... Pythium spinosum Pythium spinosum Pythium spinosum is a plant pathogen.- External links :* *... |
| Seedling blight | Cochliobolus miyabeanus Cochliobolus miyabeanus Cochliobolus miyabeanus is a fungus that causes brown spot disease in rice. This disease was the causal agent of the Bengal famine of 1943.It was used by the USA as a biological weapon in Japan during World War II.-Sources:... Curvularia Curvularia Curvularia is a hyphomycete fungus which is a facultative pathogen of many plant species and of the soil. Most Curvularia are found in tropical regions, though a few are found in temperate zones.... spp. Fusarium Fusarium Fusarium is a large genus of filamentous fungi widely distributed in soil and in association with plants. Most species are harmless saprobes, and are relatively abundant members of the soil microbial community. Some species produce mycotoxins in cereal crops that can affect human and animal health... spp. Rhizoctonia solani Rhizoctonia solani Rhizoctonia solani is a plant pathogenic fungus with a wide host range and worldwide distribution. This plant pathogen was discovered more than 100 years ago. Rhizoctonia solani frequently exists as thread-like growth on plants or in culture. Asexual spores are not produced, only the sexual stage... Sclerotium rolfsii Athelia rolfsii Athelia rolfsii Athelia rolfsii is a corticioid fungus in the family Atheliaceae. It is a facultative plant pathogen and is the causal agent of "southern blight" disease in crops.-Taxonomy:... [teleomorph] and other pathogenic fungi. |
| Sheath blight | Thanatephorus cucumeris Rhizoctonia solani Rhizoctonia solani Rhizoctonia solani is a plant pathogenic fungus with a wide host range and worldwide distribution. This plant pathogen was discovered more than 100 years ago. Rhizoctonia solani frequently exists as thread-like growth on plants or in culture. Asexual spores are not produced, only the sexual stage... [anamorph] |
| Sheath rot | Sarocladium oryzae Sarocladium oryzae Sarocladium oryzae is a plant pathogen causing the sheath rot disease of rice. In culture it produces 0.3–0.627 micrograms of helvolic acid and 0.9–4.8 micrograms of cerulenin per milliliter of culture medium. The level of helvolic acid correlated with a higher incidence of sheath rot... Acrocylindrium oryzae |
| Sheath spot | Rhizoctonia oryzae |
| Stackburn (Alternaria leaf spot) | Alternaria padwickii Alternaria padwickii Alternaria padwickii is a plant pathogen that attacks rice. It is associated with the disease stackburn, otherwise known as alternaria leaf spot.- External links :* *... |
| Stem rot | Magnaporthe salvinii Magnaporthe salvinii Magnaporthe salvinii is a fungal plant pathogen that causes stem rot in rice.- External links :* *... Sclerotium oryzae [synanamorph] |
| Water-mold (seed-rot and seedling disease) | Achlya conspicua Achlya conspicua Achlya conspicua is a plant pathogen.- External links :* *... Achlya klebsiana Achlya klebsiana Achlya klebsiana is a plant pathogen.- External links :* *... Fusarium Fusarium Fusarium is a large genus of filamentous fungi widely distributed in soil and in association with plants. Most species are harmless saprobes, and are relatively abundant members of the soil microbial community. Some species produce mycotoxins in cereal crops that can affect human and animal health... spp. Pythium Pythium Pythium is a genus of parasitic oomycete. Most species are plant parasites, but Pythium insidiosum is an important pathogen of animals... spp. Pythium dissotocum Pythium dissotocum Pythium dissotocum is a plant pathogen.- External links :* *... Pythium spinosum Pythium spinosum Pythium spinosum is a plant pathogen.- External links :* *... |
Miscellaneous diseases and disorders
| Miscellaneous diseases and disorders |
|
|---|---|
| Alkalinity or salt damage | Excessive salt concentration in soil or water |
| Bronzing | Zinc deficiency |
| Cold injury | Low temperatures |
| Panicle blight | Cause undetermined |
| Pecky rice (kernel spotting) | Feeding injury by rice stink bug |
| Straighthead | Arsenic induced, unknown physiological disorder |
| White tip (see nematodes) | Aphelenchoides besseyi |