The laticifer system of Chamaesyce thymifolia: a closed host environment for plant trypanosomatids
Biocell
; 24(2): 123-132, Aug. 2000.
Article
em En
| LILACS
| ID: lil-335905
Biblioteca responsável:
BR1.1
ABSTRACT
Specimens of Chamaesyce thymifolia (Euphorbiaceae) infected and uninfected by Phytomonas sp., a parasite of the Trypanosomatidae family, were anatomically and ultrastructurally analyzed with special emphasis on the laticifer system. C. thymifolia presents branched non-articulated laticifers and was heavily infected by Phytomonas sp. in all collection sites. Infection was often observed in the initial stages inside the vacuole, when the latex particles could be seen. In intermediary stages of laticifer differentiation, Phytomonas sp. were found free in the cytoplasm, inside small vacuoles or in the central vacuole. In differentiated laticifers that had only the plasma membrane, Phytomonas sp. were free in the latex and close to the cell membrane. Infected and uninfected plants showed identical anatomy and ultrastructure and the starch grain numbers in the latex were not reduced in the presence of this flagellate. Biochemical analysis of the latex of infected and uninfected plants presented similar levels of protein, carbohydrate and beta-1,3-glucanase, suggesting that this species is not pathogenic for the host. Besides, all infected plants complete its life cycle. Plants infected with Phytomonas presented occasionally virus like particles and bacteria inside the laticifer tubes.
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Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Plantas
/
Organelas
/
Trypanosomatina
/
Interações Hospedeiro-Parasita
Limite:
Animals
Idioma:
En
Revista:
Biocell
Assunto da revista:
Clulas
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Argentina