Abstract:
:For obligate plant-parasitic nematodes, cryopreservation has advantages over the usual preservation methods on whole plants or axenic culture systems, because the latter two are labourious and time and space consuming. In addition, cross contamination among different isolates can occur easily. Moreover, specific genetic studies require maintenance of the original population. The nematode under investigation, Radopholus similis, is a plant-parasitic nematode from the humid tropics. Therefore, any treatment at low temperatures is likely to add extra stress to the nematode, making the development of a cryopreservation protocol extremely difficult. In this paper, we describe experiments to achieve a successful cryopreservation protocol for the tropical nematode R. similis using vitrification solution-based methods based on a well defined mixture of cryoprotectants in combination with ultra-rapid cooling and thawing rates. A two-step treatment was used consisting of an incubation in glycerol followed by the application of a vitrifying mixture of methanol, glycerol and glucose. After cryopreservation, the pathogenicity of the nematodes was not altered, since they could infect and reproduce on carrot discs after recovery in the Ringer solution. The cryopreservation method described can be used for routine cryopreservation of R. similis lines from different origins.
journal_name
Cryobiologyjournal_title
Cryobiologyauthors
Elsen A,Vallterra SF,Van Wauwe T,Thuy TT,Swennen R,De Waele D,Panis Bdoi
10.1016/j.cryobiol.2007.06.006subject
Has Abstractpub_date
2007-10-01 00:00:00pages
148-57issue
2eissn
0011-2240issn
1090-2392pii
S0011-2240(07)00101-0journal_volume
55pub_type
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