Fischer, Michael

Molnar, Melanie

English

JKI Open Journal Systems (Julius Kühn-Institut)

Nachwuchswissenschaftlerforum / Young Scientists Meeting 2015                  Molnar & Fischer A new wound closure for vines made of electrospun polymer fibers as a protection against the Esca disease Melanie Molnar, Michael Fischer Julius Kühn-Institut, Institute for Plant protection in Fruit Crops and Viticulture, Siebeldingen Email of corresponding author: melanie.molnar@jki.bund.de Due to climatic changes and the inter-national trade with vines, the Esca dis-ease, originally seated in the Mediter-ranean area, has spread worldwide dur-ing the last decades. Esca causes high losses in yield every year by symptoms on leaves, black measles and leather berries. The disease is considered to be a complex of three wood living fungi Phaeomoniella chlamydospora (Pch), Phaeoacre-monium aleophilum (Pal) and Fomitiporia mediterranea (Fmed).In addition symptoms can also be found in the trunk like gummosis, caused by Pch and Pal, and white rot, caused by Fmed. Wounds in the bark of the vines are considered as the main entrance for spores of these fungi. Therefore particular attention has to be paid to the winter pruning of vines where spores can easily invade the plant through numerous pruning wounds close to the stem head. For that reason the wounds have to be pro-tected. Conventional ways of protec-tion like waxes, resins or the application of fungicides have not led to animprovement of the situation so far. As a result a prototype of a new wound closure based on electrospun polymer fibers has been developed and tested in a three year project. The process of electrospinning provides elastic and physically stable non woven fiber mats with a defined pore size providing a physical barrier for the pathogens of the Esca disease, especial-ly Pch and Pal as they infect the plant in an early age. Additionally, the material provides important properties like air-and water permeability promoting the healing process of the plant and pre-vent rotting. At the JKI the tightness of different poymers was tested against spores and germination tubes of Pch. Also the de-gradability of the materials was tested in field trials and in aging tests. Fur-thermore different methods of applica-tions were evaluated as the fibermats should be applied directly after the win-ter pruning.  Berichte aus dem Julius Kühn-Institut 181 11

A new wound closure for vines made of electrospun polymer fibers as a protection against the Esca disease

https://ojs.openagrar.de/index.php/BerichteJKI/article/download/5388/5135

A new wound closure for vines made of electrospun polymer fibers as a protection against the Esca disease

Abstract

Similar works

Full text

Available Versions

JKI Open Journal Systems (Julius Kühn-Institut)