Enhancement of sphaeropsis canker of aleppo pine by the Israeli pine bast scale

Autor:	Z. Solel, Z. Madar, M. Kimchi
Rok vydání:	2005
Předmět:	Canker animal structures biology Inoculation Homoptera fungi food and beverages Plant Science biology.organism_classification medicine.disease medicine.disease_cause complex mixtures Margarodidae Aleppo Pine Insect Science Botany Shoot Infestation medicine Bast fibre
Zdroj:	Phytoparasitica. 33:28-32
ISSN:	1876-7184 0334-2123
DOI:	10.1007/bf02980922
Popis:	An interaction between the fungal pathogenSphaeropsis sapinea (Fr.) Dyko & Sutton, causal organism of Sphaeropsis canker, and the Israeli pine bast scaleMatsucoccus josephi (Homoptera: Margarodidae), causal agent of pine decline, was studied, since both were prevalent on Aleppo pine (Pinus halepensis) stands.Sphaeropsis sapinea was isolated from larvae (stage II) and molts of the Israeli pine bast scale collected in four Aleppo pine stands. When Aleppo pine saplings were infested with pine bast scale and subsequently inoculated withS. sapinea most plants died, whereas mortality of seedlings inoculated withS. sapinea alone without previous scale infestation was negligible. Scale infestation of saplings without subsequent fungal inoculation caused the death of one third of the plants. Wounding of pine shoot apices by removal of needle fascicles enhanced infection byS. sapinea. The results support the assumption thatM. josephi can play an important role in transmitting the fungal inoculum to the host tree as well as enabling its penetration to the shoots through wounds in the bark.
Databáze:	OpenAIRE
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