This article is a list of diseases of crucifers (Brassica and Raphanus spp.).
Bacterial diseases | |
---|---|
Bacterial leaf spot | Pseudomonas syringae pv. maculicola |
Bacterial soft rot Erwinia | Erwinia carotovora |
Bacterial soft rot Pseudomonas | Pseudomonas marginalis pv. marginalis |
Black rot | Xanthomonas campestris pv. campestris |
Crown gall | Agrobacterium tumefaciens |
Xanthomonas leaf spot | Xanthomonas campestris pv. raphani |
Miscellaneous diseases and disorders | |
---|---|
Autogenic necrosis | Genetic disorder |
Black speck | Physiological |
Brown girdling root rot | Unidentified |
Scab | Streptomyces S. scabies |
Nematodes, parasitic | |
---|---|
Awl | Dolichodorus spp. |
Cyst | |
Lesion | |
Pin | Paratylenchus spp. |
Root-knot | Meloidogyne spp. |
Sting | Belonolaimus spp. |
Viral diseases | |
---|---|
Cauliflower mosaic | Cauliflower mosaic virus |
Radish mosaic | Radish mosaic virus |
Turnip mosaic | Turnip yellow mosaic virus |
Yellows | Beet western yellows virus |
Erysimum, or wallflower, is a genus of flowering plants in the cabbage family, Brassicaceae. It includes more than 150 species, both popular garden plants and many wild forms. The genus Cheiranthus is sometimes included here in whole or in part. Erysimum has since the early 21st century been ascribed to a monogeneric cruciferous tribe, Erysimeae, characterised by sessile, stellate (star-shaped) and/or malpighiaceous (two-sided) trichomes, yellow to orange flowers and multiseeded siliques.
The spring peeper is a small chorus frog widespread throughout the eastern United States and Canada. They are so called because of their chirping call that marks the beginning of spring. There are currently two subspecies recognized although detailed genetic and behavioral analysis demonstrates they likely are not biologically real:
A crucifer or cross-bearer is, in some Christian churches, a person appointed to carry the church's processional cross, a cross or crucifix with a long staff, during processions at the beginning and end of the service.
Downy mildew refers to any of several types of oomycete microbes that are obligate parasites of plants. Downy mildews exclusively belong to Peronosporaceae. In commercial agriculture, they are a particular problem for growers of crucifers, grapes and vegetables that grow on vines. The prime example is Peronospora farinosa featured in NCBI-Taxonomy and HYP3. This pathogen does not produce survival structures in the northern states of the United States, and overwinters as live mildew colonies in Gulf Coast states. It progresses northward with cucurbit production each spring. Yield loss associated with downy mildew is most likely related to soft rots that occur after plant canopies collapse and sunburn occurs on fruit. Cucurbit downy mildew only affects leaves of cucurbit plants.
Botryotinia fuckeliana is a plant pathogen, and the causal agent of gray mold disease.
Black rot is a name used for various diseases of cultivated plants caused by fungi or bacteria, producing dark brown discoloration and decay in the leaves of fruit and vegetables:
Xanthomonas campestris is a bacterium that causes a variety of plant diseases, including "black rot" in cruciferous vegetables and bacterial wilt of turfgrass.
Albugo candida, commonly known as white rust, is a species of oomycete in the family Albuginaceae. It is sometimes called a fungus, but in fact forms part of a distinct lineage of fungus-like microorganisms, Oomycetes, commonly known as water moulds. A. candida is an obligate plant pathogen that infects Brassicaceae species and causes the disease known as white rust or white blister rust. It has a relatively smaller genome than other oomycetes.
Pseudomonas marginalis is a soil bacterium that can cause soft rots of plant tissues. It infects poinsettia, lettuce, and crucifers.
Pseudomonas cannabina is a gray, Gram-negative, fluorescent, motile, flagellated, aerobic bacterium that causes leaf and stem rot of hemp, from which it derives its name. It was formerly classified as a pathovar of Pseudomonas syringae, but following ribotypical analysis, it was reinstated as a species. The type strain is CFBP 2341.
Erysiphe cruciferarum is a plant pathogen of the family Erysiphaceae, which causes the main powdery mildew of crucifers, including on Brassica crops, such as cauliflower, cabbage, broccoli, and Brussels sprouts. E. cruciferarum is distributed worldwide, and is of particular concentration in continental Europe and the Indian subcontinent. E. cruciferarum is an ascomycete fungus that has both sexual and asexual stages. It is also an obligate parasite that appears to have host specificity; for example, isolates from turnip will not infect Brussels sprout, and vice versa. While being a part of the family Erysiphaceae, it belongs to those members in which the conidia are formed singly and whose haustoria are multilobed.
Alternaria brassicae is a plant pathogen able to infect most Brassica species including important crops such as broccoli, cabbage and oil seed rape. It causes damping off if infection occurs in younger plants and less severe leaf spot symptoms on infections of older plants.
Verticillium albo-atrum is a plant pathogen with many hosts.
Rhinella crucifer is a species of toad in the family Bufonidae. It endemic to Brazil and known from the Atlantic Forest of eastern Brazil between the states of Ceará in the north and Rio de Janeiro in the south. Common name striped toad has been coined for it. "Rhinella pombali" is a hybrid between Rhinella ornata and this species.
A processional cross is a crucifix or cross which is carried in Christian processions. Such crosses have a long history: the Gregorian mission of Saint Augustine of Canterbury to England carried one before them "like a standard", according to Bede. Other sources suggest that all churches were expected to possess one. They became detachable from their staffs, so that the earliest altar crosses were processional crosses placed on a stand at the end of the procession. In large churches the "crux gemmata", or richly jewelled cross in precious metal, was the preferred style. Notable early examples include the Cross of Justin II, Cross of Lothair, and Cross of Cong.
The Crucifer of Blood is a play by Paul Giovanni that is adapted from the Arthur Conan Doyle novel The Sign of the Four. It depicts the character Irene St. Claire hiring the detective Sherlock Holmes to investigate the travails that her father and his three compatriots suffered over a pact made over a cursed treasure chest in colonial India during the Indian Rebellion of 1857.
Phymanthus crucifer, commonly known as rock flower anemone, flower anemone, red beaded anemone or the beaded anemone, is a species of sea anemone in the family Phymanthidae. It has been described as "closely similar" to Heteractis aurora in several ways, commonly exhibiting "tentacles with swollen cross-bars" bearing large clusters of stinging nematocysts. However, P. crucifer may also be found with smooth tentacles, sometimes in the immediate vicinity of a swollen-crossbarred specimen.
Black rot, caused by the bacterium Xanthomonas campestris pv. campestris (Xcc), is considered the most important and most destructive disease of crucifers, infecting all cultivated varieties of brassicas worldwide. This disease was first described by botanist and entomologist Harrison Garman in Lexington, Kentucky, US in 1889. Since then, it has been found in nearly every country in which vegetable brassicas are commercially cultivated.
Bacterial soft rots are caused by several types of bacteria, but most commonly by species of gram-negative bacteria, Erwinia, Pectobacterium, and Pseudomonas. It is a destructive disease of fruits, vegetables, and ornamentals found worldwide, and affects genera from nearly all the plant families. The bacteria mainly attack the fleshy storage organs of their hosts, but they also affect succulent buds, stems, and petiole tissues. With the aid of special enzymes, the plant is turned into a liquidy mush in order for the bacteria to consume the plant cell's nutrients. Disease spread can be caused by simple physical interaction between infected and healthy tissues during storage or transit. The disease can also be spread by insects. Control of the disease is not always very effective, but sanitary practices in production, storing, and processing are something that can be done in order to slow the spread of the disease and protect yields.
Crucifer is an unincorporated community in Henderson County, Tennessee, United States.