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Original Articles

Acremonium recifei: a new causal agent of macadamia quick decline

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Pages 42-44 | Accepted 01 Dec 1998, Published online: 07 Feb 2013
 

Abstract

Quick decline is the most serious disease of macadamia trees in Hawaii. Some macadamia trees showing symptoms of quick decline in commercial orchards on the island of Hawaii did not display macroscopic fungal fruiting bodies on the trunks. Acremonium recifei was consistently isolated from bark and wood obtained from trunks of these trees. The fungus was demonstrated to kill twigs of healthy macadamia trees when these twigs were artificially inoculated. Results suggest that trunk infection by A. recifei may lead to girdling, resulting in a rapid decline of macadamia trees.

Résumé

Le dépérissement rapide est la maladie ta plus grave des macadamias à Hawaii. Quelques macadamias avec des symptômes de dépérissement rapide dans des pépinières commerciales de l’île d’Hawaii n’avaient pas de fructifications fongiques macroscopiques sur le tronc. L’Acremonium recifei fut régulièrement isolé de l’écorce et du bois provenant du tronc de ces arbres. Lorsque inoculé artificiellement aux rameaux de macadamias sains, le champignon fut capable de tuer ces rameaux. Les résultats suggérent que l’infection du tronc par I’ A. recifei peut mener à l’annélation et, en conséquence, au dépérissement rapide des macadamias.

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