A ProMED-mail post
<http://www.promedmail.org>
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International Society for Infectious Diseases <http://www.isid.org>
Date: Mon 26 May 2014
Source: Fresh Plaza [edited]
<http://www.freshplaza.com/article/121258/Bangladesh-exported-more-than-100-tons-of-diseased-potatoes-to-Russia>
104 tons of ware potatoes that arrived in the seaport of Vladivostok [Primorsky Krai] from the People's Republic of Bangladesh in May 2014 appeared to be infected with a dangerous quarantine disease -- potato brown rot (_Ralstonia solanacearum_).
The import of unsafe agricultural products has been banned:
Rosselkhoznadzor (Federal Service for Veterinary and Phytosanitary
Surveillance) in Primorsky Krai [Primorye] and Sakhalin Region prescribed to return the infected consignment of potatoes back to the country-exporter.
The serious bacterial disease of ware potato imported into Primorsky Krai has been detected for the 4th time. The 1st 2 cases were detected in April this year [2014], when 203 tons of infected potatoes arrived in Vladivostok from India. The 3rd case was registered at the beginning of May 2014: 57 tons of potatoes arrived from Korea were infected with brown rot.
--
Communicated by:
ProMED-mail
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[Brown rot (also called bacterial wilt) of potato is caused by _Ralstonia solanacearum_ race 3 (biovar 2, adapted to cooler
temperatures) or race 1 (prevalent in warmer areas). These pathogens can also affect tomato and other solanaceous plants. Different races and biovars cause lethal wilting diseases on more than 200 known hosts including many important crops.
Brown rot symptoms include internal staining and rotting of tubers, wilting, and death of plants, and may result in substantial yield losses. However, there may also be latent infections. The pathogens can survive in potato tubers during storage posing a high risk for introduction of the pathogen to new areas.
The bacteria are spread by mechanical means (including insects), contaminated equipment, infected plant material (including seed potatoes), soil, and water. They can survive in soil on plant debris or roots of hosts. Some weeds and unharvested potato plants may serve as pathogen reservoirs. Disease management is difficult, relying mostly on exclusion from new areas. Some cultural methods (such as crop rotation) and limited genetic resistance may be used.
Maps
Russia:
<http://www.map-of-russia.org/map-of-russia.gif> and <http://healthmap.org/promed/p/11269>
Russian regions:
<http://map.rin.ru/index_e.html>
Pictures
Potato brown rot symptoms:
<http://www.massnrc.org/PESTS/pestFAQsheets/popup_code/ralstoniafig07.htm>
and
<http://www.eppo.org/QUARANTINE/bacteria/Ralstonia_solanacearum/PSDMSO_images.htm>
Susceptible and resistant potato cultivars:
<http://www.cals.ncsu.edu/course/pp728/Ralstonia/potato_field.gif>
Links
Brown rot disease information:
<http://www.agric.wa.gov.au/objtwr/imported_assets/content/pw/ph/dis/veg/fs00701.pdf>,
<http://www.fera.defra.gov.uk/plants/publications/documents/factsheets/brownrot.pdf>,
<http://www.plantmanagementnetwork.org/pub/php/review/2009/ralstonia/>,
and
<http://www.agriculture.gov.ie/media/migration/farmingsectors/crops/potatoes/
potatodiseasesandtests/Potato%20Brown%20Rot%20information%20sheet%20%28doc%20992Kb%29050210.pdf>
_R. solanacearum_ wilts, general information:
<http://www.eppo.org/QUARANTINE/bacteria/Ralstonia_solanacearum/PSDMSO_ds.pdf>,
<http://www.cals.ncsu.edu/course/pp728/Ralstonia/Ralstonia_solanacearum.html>,
and
<http://www.oisat.org/pests/diseases/bacterial/bacterial_wilt.html>
Diagnosis and description of _R. s._ races:
<http://www.eppo.org/QUARANTINE/bacteria/Ralstonia_solanacearum/pm7-21(1)%20PSDMSO%20web.pdf>
Description and taxonomy of _R. solanacearum_:
<http://www.uniprot.org/taxonomy/305>,
<http://expasy.org/sprot/hamap/RALSO.html>, and via <http://www.bacterio.cict.fr/qr/ralstonia.html>
- Mod.DHA]
[See Also:
2011
----
Brown rot, potato - Russia: (KL) ex Egypt 20110418.1208
2010
----
Brown rot, potato - Lesotho: (MS, TT) 20100221.0591
2009
----
Brown rot, potato - Australia: (QLD), new strain 20090821.2958
2008
----
Brown rot, potato - Ireland 20081028.3401 Brown rot, potato - Russia: (IRK) ex China 20080820.2595 Brown rot, potato - Mauritius: 1st report 20080515.1629 Potato diseases - India: (West Bengal) 20080206.0477
2007
----
Brown rot, potato - Ireland: 1st report 20071022.3438 and older items in the archives]
Topics
Species
