EFFECTS OF AMBROSIA BEETLE ATTACK ON CERCIS CANADENSIS

Autor:	Floyd M. Woods, Kathy S. McLean, Micheal A. Davis, Michael E. Miller, Roland R. Dute
Rok vydání:	2002
Předmět:	Hyphal growth biology Ambrosiella Cercis Forestry Plant Science Ambrosia beetle biology.organism_classification medicine.disease_cause Cell wall Parenchyma Infestation Botany medicine Colonization
Zdroj:	IAWA Journal. 23:143-160
ISSN:	2294-1932 0928-1541
DOI:	10.1163/22941932-90000294
Popis:	Damage caused to Cercis canadensis by the Asian ambrosia beetle and its associated micro-organisms was investigated as was host response to infestation. Various micro-organisms were connected with beetle infestation but only filamentous fungi exhibited extensive growth. In particular, species of Ambrosiella were associated with beetle tunnels. Fungal hyphae infected all cell types by growing directly through cell walls, by penetrating pit membranes, and by traversing perforations. Colonization of parenchyma was intensive and these cells probably provided the nutrients for continued hyphal growth. Host cell response to damage included breakdown of the protective layer of some parenchyma cells and accumulation of polysaccharide gels within vessel members. Measurements showed no significant difference in ethylene production by wood samples from infected versus uninfected trees. However, established literature indicates that damage-induced ethylene production was responsible for initiating events that caused vascular blockage by carbohydrate gel.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::88988bda7e3955a3e67803685be2e367 https://doi.org/10.1163/22941932-90000294 Zobrazit plný text záznamu