ENDOPHYTIC ALGAE OF CHONDRUS-CRISPUS (RHODOPHYTA) .5. FINE-STRUCTURE OF THE INFECTION BY ACROCHAETE-OPERCULATA (CHLOROPHYTA)

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dc.contributor.authorCORREA, JA
dc.contributor.authorMCLACHLAN, JL
dc.date.accessioned2025-01-23T19:21:28Z
dc.date.available2025-01-23T19:21:28Z
dc.date.issued1994
dc.description.abstractThe sequence of events taking place during infection of the algal host Chondrus crispus by the algal endophyte Acrochaete operculata was characterised at the ultrastructural level. Infection required settlement of quadriflagellate zoospores on the outer cell wall of the host. The host outer cell wall did not represent a barrier against penetration by the endophyte, which digested its way through. The extent of further spread of A. operculata in C. crispus was determined by the life-history phase of the host. In sporophytic fronds, colonisation of inner tissues occurred by digestion of the intercellular matrix, and infection spread throughout the frond. In gametophytic thalli, infection remained localised, forming a characteristic papule. In spite of these differences, degenerative changes at the cellular level were similar in the two phases of the host. Damage was caused by compression and by penetration of host cells. Final breakdown of the host resulted from the combined effects of A. operculata and bacteria. Bacteria alone did not cause damage to healthy C crispus, but they accelerated cell wall degradation in the presence of A. operculata. Thus, A. operculata should be considered a primary pathogen of C. crispus, causing direct cellular damage and facilitating secondary infections.
dc.fuente.origenWOS
dc.identifier.issn0967-0262
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/98775
dc.identifier.wosidWOS:A1994NF92700006
dc.issue.numero1
dc.language.isoen
dc.pagina.final47
dc.pagina.inicio33
dc.revistaEuropean journal of phycology
dc.rightsacceso restringido
dc.subjectACROCHAETE-OPERCULATA
dc.subjectCELLULAR INTERACTIONS
dc.subjectCHONDRUS-CRISPUS
dc.subjectDISEASE
dc.subjectENDOPHYTE
dc.subjectINFECTION
dc.subjectULTRASTRUCTURE
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleENDOPHYTIC ALGAE OF CHONDRUS-CRISPUS (RHODOPHYTA) .5. FINE-STRUCTURE OF THE INFECTION BY ACROCHAETE-OPERCULATA (CHLOROPHYTA)
dc.typeartículo
dc.volumen29
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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