List of poinsettia diseases
Encyclopedia
Bacterial diseases
| Bacterial diseases |
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|---|---|
| Bacterial leaf spot | Curtobacterium flaccumfaciens Curtobacterium flaccumfaciens Curtobacterium flaccumfaciens is a Gram-positive soil bacterium that causes disease on a variety of plants.... = Corynebacterium flaccumfaciens pv. poinsettiae Pseudomonas cichorii Pseudomonas cichorii Pseudomonas cichorii is a Gram-negative soil bacterium that is pathogenic to plants. It has a wide host range, and can have an important economical impact on lettuce, celery and chrysanthemum crops.. P. cichorii was first isolated on endives , from which it derives its name. It produces... P. marginalis Pseudomonas marginalis Pseudomonas marginalis is a soil bacterium that can cause soft rots of plant tissues. Based on 16S rRNA analysis, P. marginalis has been placed in the P. fluorescens group.... P. syringae Pseudomonas syringae Pseudomonas syringae is a rod shaped, Gram-negative bacterium with polar flagella. It is a plant pathogen which can infect a wide range of plant species, and exists as over 50 different pathovars, all of which are available to legitimate researches via international culture collections such as the... subsp. syringae Xanthomonas campestris Xanthomonas campestris Xanthomonas campestris is a bacterial species that causes a variety of plant diseases. Available from the NCPPB,and other international Culture collections such as ICMP, ATCC, and LMG in a purified form, it is used in the commercial production of a high-molecular-weight polysaccharide - xanthan... pv. poinsettiaecola |
| Bacterial stem rot | Erwinia carotovora subsp. carotovora Erwinia chrysanthemi |
| Crown gall | Agrobacterium tumefaciens Agrobacterium tumefaciens Agrobacterium tumefaciens is the causal agent of crown gall disease in over 140 species of dicot. It is a rod shaped, Gram negative soil bacterium... |
| Greasy center | Pseudomonas viridiflava Pseudomonas viridiflava Pseudomonas viridiflava is a fluorescent, Gram-negative, soil bacterium that is pathogenic to plants. It was originally isolated from the dwarf or runner bean, in Switzerland. Based on 16S rRNA analysis, P. viridiflava has been placed in the P. syringae group. Following ribotypical analysis... |
Fungal diseases
| Fungal diseases |
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|---|---|
| Anthracnose | Colletotrichum capsici Colletotrichum capsici Colletotrichum capsici is a plant pathogen which causes leaf blight on Chlorophytum borivilianum, basil, chickpea and pepper as well as dieback in pigeonpea and anthracnose in poinsettia.- External links :* *... Colletotrichum dematium Colletotrichum dematium Colletotrichum dematium is a plant pathogen causing anthracnose.- External links :* *... Glomerella cingulata Glomerella cingulata Glomerella cingulata is a plant pathogenic fungus that causes disease on many different hosts including quince and apple bitter rot and anthracnose on many fruit and vegetable species. Glomerella cingulata is the sexual stage while the asexual stage is called Colletotrichum gloeosporioides.-... Colletotrichum gloeosporioides [anamorph] |
| Aerial blight | Ceratobasidium ramicola Ceratobasidium ramicola Ceratobasidium ramicola is a plant pathogen.- External links :* *... Rhizoctonia ramicola [anamorph] |
| Basal stem and crown rot | Sclerotinia sclerotiorum Sclerotinia sclerotiorum Sclerotinia sclerotiorum is a plant pathogenic fungus and can cause a disease called white mold if conditions are correct. S. sclerotiorum can also be known as cottony rot, watery soft rot, stem rot, drop, crown rot and blossom blight... |
| Basal stem and root rot | Ceratocystis Ceratocystis Ceratocystis is a genus of fungi within the Ceratocystidaceae family.-Species:*Ceratocystis acericola*Ceratocystis acoma*Ceratocystis adiposa*Ceratocystis aequivaginata*Ceratocystis albida*Ceratocystis albofundus... sp. Thielaviopsis basicola Thielaviopsis basicola Thielaviopsis basicola is a plant pathogen.- External links :* *... [anamorph] Chalara elegans [synanamorph] |
| Black rot | Botryodiplodia sp. |
| Bract, flower and leaf blight | Phytophthora drechsleri Phytophthora drechsleri Phytophthora drechsleri is a plant pathogen.- External links :**... |
| Bract spot | Corynespora cassiicola Corynespora cassiicola Corynespora cassiicola is a plant pathogen.- External links :* *... |
| Crown and stem rot | Fusarium oxysporum Fusarium oxysporum Fusarium oxysporum Schlecht. as emended by Snyder and Hansen comprises all the species, varieties and forms recognized by Wollenweber and Reinking within an infrageneric grouping called section Elegans... Nectria haematococca Fusarium solani [anamorph] |
| Cutting rot | Cylindrocladium scoparium |
| Dieback | Lasiodiplodia theobromae Lasiodiplodia theobromae Lasiodiplodia theobromae is a plant pathogen with a very wide host range. It causes rotting and dieback in most species it infects. On rare occasions it has been found to cause Fungal keratitis. It is a common post harvest fungus disease of citrus known as stem-end rot.- External links :* *... Botryosphaeria theobromae |
| Gray mold | Botryotinia ricini Amphobotrys ricini Amphobotrys ricini Amphobotrys ricini is a plant pathogen which causes disease on several species including Gray Mold Blight on Euphorbia milii and poinsettia.- External links :* *... [anamorph] Botrytis ricini Botryotinia fuckeliana Botryotinia fuckeliana Botryotinia fuckeliana is a plant pathogen, and the causal agent of gray mold disease.The specific epithet was named by mycologist Heinrich Anton de Bary in honor of another mycologist, Karl Wilhelm Gottlieb Leopold Fuckel.... Botrytis cinerea Botrytis cinerea Botrytis cinerea is a necrotrophic fungus that affects many plant species, although its most notable hosts may be wine grapes. In viticulture, it is commonly known as botrytis bunch rot; in horticulture, it is usually called grey mould or gray mold.The fungus gives rise to two different kinds of... [anamorph] |
| Leaf necrosis | Cladosporium Cladosporium Cladosporium is a genus of fungi including some of the most common indoor and outdoor molds. Species produce olive-green to brown or black colonies, and have dark-pigmented conidia that are formed in simple or branching chains.... sp. Macrophoma Macrophoma Macrophoma is a genus of anamorphic fungi in the family Botryosphaeriaceae.-Species:*Macrophoma abietis*Macrophoma abietis-pectinatae*Macrophoma abscondita*Macrophoma acaciaecola*Macrophoma acanthina*Macrophoma aceris... sp. |
| Leaf spot | Alternaria euphorbiicola Alternaria euphorbiicola Alternaria euphorbiicola is a plant pathogen.- External links :* *... Ascochyta Ascochyta Ascochyta is a genus of ascomycote fungi, containing several pathogens to plants. The taxonomy of this genus is still incomplete.Some of these pathogens affect grass species, including grains.- Some species of Ascochyta :... sp. Cercospora pulcherrimae 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.... sp. Drechslera Drechslera Drechslera is a genus of fungi. Many of the species in this genus are plant pathogens. Drechslera puttaparthii is a new species found recently by Dr.Vijay Kumar. at Department of Biosciences. Sri Sathya Sai institute of higher learning. Prasanthinilayam.... sp. Myrothecium roridum Myrothecium roridum Myrothecium roridum is a plant pathogen. Myrotoxin B has been isolated from it.- External links :* *... Phyllosticta Phyllosticta Phyllosticta is a genus of fungi. Many of the species in this genus are plant pathogens.-Species:*Phyllosticta aberiae*Phyllosticta abietis*Phyllosticta abortiva*Phyllosticta abramovii*Phyllosticta abricola... sp. Syspastospora parasitica Syspastospora parasitica Syspastospora parasitica is a mycoparasitic fungus. It attacks other fungi, particularly species of Beauveria and Isaria . It parasitizes the mycelium of its host by means of specialized contact cells, and produces dark brown, long-necked perithecia.... Melanospora parasitica Stemphylium sp. |
| Mushroom root rot | Armillaria tabescens Armillaria tabescens Armillaria tabescens is a species of fungus in the Physalacriaceae family of mushroom. It is a plant pathogen.- External links :* *... |
| Powdery mildew | Oidium Oidium This article is about a type of fungal spore. For the ascomycete genus, see Oidium . For the fungus that causes powdery mildew on grapes, see Uncinula necator.... sp. Erysiphe Erysiphe Erysiphe is a genus of fungi in the Erysiphaceae family. Many of the species in this genus are plant pathogens which cause powdery mildew.... sp. Microsphaera euphorbiae Microsphaera euphorbiae Microsphaera euphorbiae is a plant pathogen.- External links :* *... |
| Root rot | Phytophthora nicotianae Phytophthora nicotianae Phytophthora nicotianae is a plant pathogen. It can be found in the root of Zamioculcas zamiifolia.- External links :* *... Phytophthora nicotianae var. parasitica Pythium aphanidermatum Pythium aphanidermatum Pythium aphanidermatum is a plant pathogen.- External links :**... Pythium debaryanum Pythium debaryanum Pythium debaryanum is a plant pathogen.- External links :**... Pythium myriotylum Pythium myriotylum Pythium myriotylum is a plant pathogen.- External links :**... Pythium perniciosum Pythium perniciosum Pythium perniciosum is a plant pathogen.- External links :* *... Pythium splendens Pythium splendens Pythium splendens is a plant pathogen.- External links :**... Pythium ultimum Pythium ultimum Pythium ultimum is a plant pathogen.- External links :***... |
| Root and stem rot | 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] |
| Rust | Puccinia Puccinia Puccinia is a genus of fungi. All species in this genus are obligate plant pathogens and are known as rusts .Examples of Puccinia rusts and the diseases they cause:* Puccinia asparagi - Asparagus rust... sp. Uromyces euphorbiae Uromyces euphorbiae Uromyces euphorbiae is a plant pathogen.- External links :* *... Uromyces proëminens var. poinsettiae Uromyces proëminens var. poinsettiae Uromyces proëminens var. poinsettiae is a plant pathogen.- External links :* *... |
| Scab | Sphaceloma poinsettiae Sphaceloma poinsettiae Sphaceloma poinsettiae is a plant pathogen. It causes poinsettia scab, which is a spot anthracnose disease.- External links :* *... |
| Stem gall | Nectriella pironii Nectriella pironii Nectriella pironii is a plant pathogen, that parasitizes Aphelandra squarrosa, Clerodendron bungei, Codiaeum variegatum, Jussiaea peruviana, Leucophyllum frutescens, Pittosporum tobria, Plumbago capensis and Psychotria undata.-Plant Symptoms:... Kutilakesa pironii Kutilakesa pironii Kutilakesa pironii is an ascomycete fungus that is a plant pathogen.- External links :* *... [anamorph] |
| Stem rot | Botryosphaeria ribis Botryosphaeria ribis Botryosphaeria ribis is a plant pathogen that infects many trees causing cankers, dieback and death.- External links :**... Diplodia Diplodia Diplodia is a genus of anamorphic fungi in the family Botryosphaeriaceae.-Species:*Diplodia abiegna*Diplodia abrotani*Diplodia abutilonis*Diplodia acaciae*Diplodia acaciarum*Diplodia acanthophylli*Diplodia acericola... sp. Leptothyrium sp. Phoma Phoma Phoma is a genus of common coelomycetous soil fungi. It contains many plant pathogenic species. About 140 Phoma taxa have been defined and recognized which may be divided into two large groups: plurivorous fungi, generally saprobic or weakly parasitic, mainly from temperate regions in Eurasia, but... sp. Phomopsis Phomopsis Phomopsis is a genus of ascomyceta fungi.-Species:Species include:* Phomopsis arnoldiae* Phomopsis asparagi* Phomopsis asparagicola* Phomopsis cannabina* Phomopsis caricae-papayae* Phomopsis coffeae* Phomopsis elaeagni... sp. |
Nematodes, parasitic
| Nematodes, parasitic |
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|---|---|
| Root knot nematode | Meloidogyne spp. |
Viral and viroid diseases
| Viral and viroid diseases |
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|---|---|
| Mosaic | genus Begomovirus Begomovirus The genus Begomovirus contains more than 200 species and belongs to the taxonomic family Geminiviridae. They are plant viruses that as a group have a very wide host range, infecting dicotyledonous plants... , Euphorbia mosaic virus Euphorbia mosaic virus Euphorbia mosaic virus is a plant pathogenic virus of the family Geminiviridae.-External links:**... (EuMV) Poinsettia mosaic virus Poinsettia mosaic virus Poinsettia mosaic virus is a pathogenic plant virus.-External links:**... (possible tymovirus) (PnMV) |
| (symptomless) | Poinsettia (?) alphacryptovirus (PnCV) |
Miscellaneous diseases and disorders
| Miscellaneous diseases and disorders |
|
|---|---|
| Bleaching necrosis | Air pollutant injury from either chlorides (> 0.5 ppm), nitrogen dioxide (> 2-3 ppm) or sulfur dioxide (> 0.5 ppm) |
| Bract necrosis | Physiological disorder favored by high humidity, heavy watering and high (ammoniacal) fertility rates in the last 4 weeks of production |
| Chlorosis | Nitrogen deficiency producing a general foliar yellowing Molybdenum deficiency affecting mature young leaves and producing upward leaf roll Sulfur deficiency causing young leaf yellowing Zinc deficiency producing general yellowing and stunting of new leaves |
| Cyathia drop | Response to low light conditions, dryness and/or high temperatures at the end of the production cycle |
| Dropping (epinasty) | Ethylene toxicity (< 1 ppm) or low temperature chilling |
| Edema | Physiological |
| Interveinal chlorosis | Magnesium deficiency, initiating on older leaves Manganese deficiency, initiating on young mature leaves Ammonium toxicity produces V-shaped chlorotic bands starting at the leaf tip and accompanied by downward leaf cupping |
| Latex eruption | High internal turgor pressure associated with certain cultivars, high humidity, high moisture availability, low temperatures and/or mechanical abrasion |
| Leaf glazing (bronzing) | Peroxyacetyl nitrate (PAN) injury to the lower epidermis (> 0.2 ppm) |
| Marginal necrosis | Potassium deficiency Fluoride toxicity on tips and margins of young leaves and bracts (0.4 ppm in water) Lithium toxicity on older leaves (2 ppm) |
| Stem splitting | Physiological expression of flower initiation |
| Stippling | Ozone injury (> 4 ppm) |
| Terminal shoot necrosis | Excessive soluble salts (> 800 EC X 102) |
| White bract | Chilling injury occurring between 0–10 °C (32–50 F) |