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Article
Microbial biodiversity associated with the walnut Juglans regia L. in South Tyrol (Italy)
Mitteilungen Klosterneuburg
  • Ruth Pardatscher, Research Centre for Agriculture and Forestry, Laimburg
  • Wolfgang Schweigkofler, Research Centre for Agriculture and Forestry, Laimburg
Document Type
Article
Publication Date
1-1-2009
Department
Natural Sciences and Mathematics
Abstract
The endophytic and epiphytic microflora from walnut trees in South Tyrol (Northern Italy) was analyzed. A total of 16 trees from 8 sites were sampled at three dates during the warm season (May, July and September) in 2005, using plant material from three different tissue types (leaves, fruit and lignified twigs). Samples were either transferred directly onto nutrient medium or surface sterilized prior to plating to distinguish between epiphytic and endophytic growth. A total of 3,880 culturable isolates were obtained, the vast majority of the isolates (3,742) belonging to fungi (96.4%); only 138 (3.6%) were bacteria. Fungal isolates were classified into 30 genera, Alternaria, Penicillium, Phoma, Botryosphaeria, Fusarium, Cladosporium, Phyllosticta and Epicoccum being the most common taxa. Although epiphytic growth predominated (73.9% of the identified isolates), a significant number of endophytes (26.1%) were isolated as well. More isolates were obtained from leaves (45.3%) than from twigs (31.8%) and fruit (23.0%). Seasonal effects were not very distinct, but a tendency towards higher isolation success in September was observed.
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Copyright © 2009 Mitteilungen Klosterneuburg. All rights reserved.

Publisher Statement
Originally published as Pardatscher, R., & Schweigkofler, W. (2009). Microbial biodiversity associated with walnut Juglans regia L. in south Tyrol (Italy). Mitt Klosterneuburg, 59, 24-30.
Citation Information
Ruth Pardatscher and Wolfgang Schweigkofler. "Microbial biodiversity associated with the walnut Juglans regia L. in South Tyrol (Italy)" Mitteilungen Klosterneuburg Vol. 59 (2009) p. 24 - 30 ISSN: 0007-5922
Available at: http://works.bepress.com/wolfgang_schweigkofler/27/