STUDY OF THE PORTUGUESE POPULATIONS OF POWDERY MILDEW FUNGUS FROM DIVERSE GRAPEVINE CULTIVARS (VITIS VINIFERA)

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Manuela Oliveira (Author) Other; Mario Cunha (Author) FCUP

Journal

Title: Journal International des Sciences de la Vigne et du Vin

Vol. 49

Pages: 173-182

ISSN: 1151-0285

Publisher: Vigne et Vin Publications Internationales

Indexing

ISI Web of Knowledge - 10 Citations

Scopus - 10 Citations

Scientific classification

FOS: Agrarian Sciences > Other Agrarian Sciences

Other information

Authenticus ID: P-00G-SAV

Abstract (EN): Aims: The main goal of this work was to describe the genetic diversity and population structure of Portuguese isolates from Erysiphe necator using a new approach for the sampling of DNA from this pathogen. Methods and results: The present study was conducted in the main demarcated wine regions of Portugal, where leaf and berry samples were collected for further genetic analysis. After DNA extraction, the Internal Transcribed Spacer from the 18S ribosomal RNA (ITS), the Intergenic Spacer (IGS), and the beta-tubulin gene were successfully amplified and sequenced. The populations of E. necator are structured into two genetically distinct groups (A and B), with the majority of the analyzed samples belonging to group B. Conclusion: Regardless of its geographical origin and the Vitis vinifera cultivar, the population of E. necator presents low genetic diversity. Significance and impact of the study: The present work will certainly help to increase the vineyard productivity through a better definition of preventive measures and a potential decrease in the direct and indirect costs associated with the use of fungicides.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10