Dollet Michel, Ahmadegbe J.C., Gargani Daniel, Marché Sylvie, Guerrini F., Segur C., Baltz Théo, Muller Emmanuelle.
1993. Specificity of phytopathogenic trypanosomes (Phytomonas spp.).
In : International Congress of Plant Pathology. 6
Résumé : #Phytomonas# spp. do exist in plants. Different species of plants host #Phytomonas#, but significant pathogenicity has been observed in only four plants : coconut (Hartrot disease), oil palm (Marchitez disease), coffee (Phloem necrosis) and #Alpinia purpurata# (wilt). It is possible to differentiate #Phytomonas# specifically associated with this diseases from the others by several criteria. At the biological level : 1°) They are located in the sieve tubes, whereas others occur in latex tubes or in the fruits, 2°) Primoculture of pathogenic #Phytomonas# (Phloem restricted) can be obtained only with insect cell cultures. At the molecular level : 1°) Phloem restricted #Phytomonas# can be set apart by their schyzodeme, 2°) They harbor a double stranded RNA which could be of viral origin. Moreover, isolates of phloem restricted #Phytomonas# can be characterized by the size of the minicircles of kinetoplastic DNA, and their restriction endonucleases pattern.
Mots-clés Agrovoc : Cocos nucifera, Elaeis guineensis, Coffea, Alpinia purpurata, Phytomonas
Classification Agris : H20 - Maladies des plantes
Auteurs et affiliations
- Dollet Michel
- Ahmadegbe J.C.
- Gargani Daniel
- Marché Sylvie
- Guerrini F.
- Segur C.
- Baltz Théo
- Muller Emmanuelle
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/400841/)
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