Difference between revisions of "Phytoplasma solani"
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{{LiteratureDB|{{PAGENAME}}|browse,crops}} | {{LiteratureDB|{{PAGENAME}}|browse,crops}} | ||
| + | [[File:Vitis vinifera phytoplasma.jpg|300px|thumb|Symptoms of "bois noir" infection in grapevine adults (click on image to enlarge it)<br/>Source: [http://commons.wikimedia.org/wiki/File:Vitis_vinifera_phytoplasma.jpg Wikimedia Commons]]] | ||
<font color="#800000">'''''Candidatus'' Phytoplasma solani'''</font> Quaglino et al., 2013 - (stolbur phytoplasma)<br/> | <font color="#800000">'''''Candidatus'' Phytoplasma solani'''</font> Quaglino et al., 2013 - (stolbur phytoplasma)<br/> | ||
This phytoplasma is associated with "bois noir" of grapevine in the Mediterranean Europe as well as with various stolbur diseases of other crops. A survey in 2006 revealed an infected grapevine plant in British Columbia (Canada), see [[Plant Disease (2007) 91, p. 1682 (Rott et al.)| Rott et al. 2007]]. It has been also reported from several other regions. | This phytoplasma is associated with "bois noir" of grapevine in the Mediterranean Europe as well as with various stolbur diseases of other crops. A survey in 2006 revealed an infected grapevine plant in British Columbia (Canada), see [[Plant Disease (2007) 91, p. 1682 (Rott et al.)| Rott et al. 2007]]. It has been also reported from several other regions. | ||
The symptoms on grapevine include leaf discoloration and curling, berry shriveling, and irregular maturation of the wood. In some areas a disease incidence of more than 50% has been reported. On cherry, leaves are small, curled, chlorotic and turn red prematurely. On potatoes, it is associated with purple top disease which includes symptoms like stunting, chlorosis, slight purple coloration of new growth, swollen nodes, proliferated axillary buds, and aerial tubers. On maize the midribs, leaves and stalks show reddening, followed by desiccation of the entire plant and abnormal ear development. | The symptoms on grapevine include leaf discoloration and curling, berry shriveling, and irregular maturation of the wood. In some areas a disease incidence of more than 50% has been reported. On cherry, leaves are small, curled, chlorotic and turn red prematurely. On potatoes, it is associated with purple top disease which includes symptoms like stunting, chlorosis, slight purple coloration of new growth, swollen nodes, proliferated axillary buds, and aerial tubers. On maize the midribs, leaves and stalks show reddening, followed by desiccation of the entire plant and abnormal ear development. | ||
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|fr=bois noir de la vigne | |fr=bois noir de la vigne | ||
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| − | At present, there is no effective strategy to manage the disease. For example the application of insecticides on the host plants has not influenced the disease or the vector | + | Various planthopper species from the family Cixiidae have been implicated as vectors of this phytoplasma, like ''[[Hyalesthes obsoletus]]'' (more than 50% of individuals might carry the phytoplasma in some areas) and ''[[Reptalus panzeri]]''. The phytoplasma has bee also associated with weeds, like ''[[Convolvulus arvensis (weed)|Convolvulus arvensis]]''. |
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| + | At present, there is no effective strategy to manage the disease. For example the application of insecticides on the host plants has not influenced the disease or the vector populations. However, in some cases the recovery of diseased plants has been reported, indicating a resistance mechanism in grapevine. There is also evidence that resistance inducers (e.g. benzothiadiazole) could be used to promote such recoveries. | ||
The phytoplasma has been previously grouped into subgroup 16SrI-G, but is now regarded as belonging to subgroup 16SrXII-A. The reference strain of this species is STOL11. | The phytoplasma has been previously grouped into subgroup 16SrI-G, but is now regarded as belonging to subgroup 16SrXII-A. The reference strain of this species is STOL11. | ||
[[Category:16SrXII phytoplasma group]] | [[Category:16SrXII phytoplasma group]] | ||
Revision as of 17:24, 23 February 2015
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Source: Wikimedia Commons
Candidatus Phytoplasma solani Quaglino et al., 2013 - (stolbur phytoplasma)
This phytoplasma is associated with "bois noir" of grapevine in the Mediterranean Europe as well as with various stolbur diseases of other crops. A survey in 2006 revealed an infected grapevine plant in British Columbia (Canada), see Rott et al. 2007. It has been also reported from several other regions.
The symptoms on grapevine include leaf discoloration and curling, berry shriveling, and irregular maturation of the wood. In some areas a disease incidence of more than 50% has been reported. On cherry, leaves are small, curled, chlorotic and turn red prematurely. On potatoes, it is associated with purple top disease which includes symptoms like stunting, chlorosis, slight purple coloration of new growth, swollen nodes, proliferated axillary buds, and aerial tubers. On maize the midribs, leaves and stalks show reddening, followed by desiccation of the entire plant and abnormal ear development.
| Vernacular names | |
|---|---|
| • Deutsch: | Vergilbungskrankheit der Rebe |
| • English: | maize redness bois noir of grapevine stolbur of pepper phytoplasma 16SrXII-A phytoplasma subgroup stolbur phytoplasma |
| • Français: | bois noir de la vigne |
Various planthopper species from the family Cixiidae have been implicated as vectors of this phytoplasma, like Hyalesthes obsoletus (more than 50% of individuals might carry the phytoplasma in some areas) and Reptalus panzeri. The phytoplasma has bee also associated with weeds, like Convolvulus arvensis.
At present, there is no effective strategy to manage the disease. For example the application of insecticides on the host plants has not influenced the disease or the vector populations. However, in some cases the recovery of diseased plants has been reported, indicating a resistance mechanism in grapevine. There is also evidence that resistance inducers (e.g. benzothiadiazole) could be used to promote such recoveries.
The phytoplasma has been previously grouped into subgroup 16SrI-G, but is now regarded as belonging to subgroup 16SrXII-A. The reference strain of this species is STOL11.
