Multiplex Real-Time Quantitative PCR to Detect and Quantify Verticillium dahliae Colonization in Potato Lines that Differ in Response to Verticillium Wilt

Autor:	J. Bae, Walter R. Stevenson, Shelley Jansky, Douglas I. Rouse, Zahi K. Atallah
Rok vydání:	2007
Předmět:	biology Inoculation fungi food and beverages Plant Science Fungi imperfecti biology.organism_classification Microbiology law.invention law Multiplex polymerase chain reaction Multiplex Verticillium dahliae Verticillium wilt Agronomy and Crop Science Polymerase chain reaction Solanaceae
Zdroj:	Phytopathology®. 97:865-872
ISSN:	1943-7684 0031-949X
Popis:	Atallah, Z. K., Bae, J., Jansky, S. H., Rouse, D. I., and Stevenson, W. R. 2007. Multiplex real-time quantitative PCR to detect and quantify Verticillium dahliae colonization in potato lines that differ in response to Verticillium wilt. Phytopathology 97:865-872. Potato early dying (PED), also known as Verticillium wilt, caused by Verticillium dahliae, is a seasonal yield-limiting disease of potato worldwide, and PED-resistant cultivars currently represent only a small percentage of potato production. In this study, we developed a real-time quantitative polymerase chain reaction (Q-PCR) approach to detect and quantify V. dahliae. The efficiency of the designed primer pair VertBtF/VertBt-R, derived from the sequence of the β-tubulin gene, was greater than 95% in monoplex Q-PCR and duplex (using Plexor technology) procedures with primers PotAct-F/PotAct-R, obtained from the sequence of the actin gene, designed for potato. As few as 148 fg of V. dahliae DNA were detected and quantified, which is equivalent to five nuclei. QPCR detected V. dahliae in naturally infected air-dried potato stems and fresh stems of inoculated plants. Spearman correlations indicated a high correlation (upward of 80%) between V. dahliae quantifications using QPCR and the currently used plating assays. Moreover, Q-PCR substantially reduced the variability compared with that observed in the plating assay, and allowed for the detection of V. dahliae in 10% of stem samples found to be pathogen free on the culture medium. The described Q-PCR approach should provide breeders with a more sensitive and less variable alternative to time-consuming plating assays to distinguish response of breeding lines to colonization by V. dahliae.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5ae065647b1ab5c9db61f0eee16e7ef https://doi.org/10.1094/phyto-97-7-0865 Zobrazit plný text záznamu