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Effects of Trichoderma harzianum applications on fresh pruning wounds in Actinidia deliciosa for the protection against pathogens associated with the “wood decay” of kiwifruit

Neri, L.; Baraldi, R.; Osti, F. and Di Marco, S. (2008) Effects of Trichoderma harzianum applications on fresh pruning wounds in Actinidia deliciosa for the protection against pathogens associated with the “wood decay” of kiwifruit. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

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Summary

A chronic wood wasting disease of kiwifruit (Actinidia deliciosa) has recently been identified in Italian kiwifruit vineyards. This disease is principally caused by Phaeoacremonium aleophilum and Fomitiporia mediterranea. The “wood decay” causes a reduced productivity and longevity in the vineyards and influences the quality of the final product. “Wood decay” has a high incidence throughout the vineyards, and is difficult to eradicate once present, leaving prevention as the best defence strategy. The different pathogens causing the disease infect the plant mainly through pruning wounds. We studied a commercial formulation of Trichoderma harzianum T22 for the protection of pruning wounds, and thus for the prevention and reduction of the infection. The studies were carried out on potted plants, on shoots of the year that were cut, simulating a summer pruning, and treated with a T. harzianum commercial suspension. A different morphologic reaction was observed on treated and control shoots; physiological processes connected to the reaction, such as the variation in the levels of a growth-promoting hormone (auxin) and the content of total phenols were investigated through biochemical and histological analyses. The higher levels of auxin and phenols recorded in treated shoots suggested a stimulation of T. harzianum on the wound healing processes.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:kiwifruit, decay, pruning, Trichoderma harzianum
Subjects: Crop husbandry > Production systems > Fruit and berries
Research affiliation: International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 2.6 Crop health and weed management
Deposited By: Tommasini, Dr M.Grazia
ID Code:12142
Deposited On:07 Oct 2008
Last Modified:12 Apr 2010 07:36
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:This paper is published in the conference proceedings:
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. http://orgprints.org/13672 and http://orgprints.org/13674

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