Rapid and Quantitative Detection of Leifsonia xyli subsp. xyli in Sugarcane Stalk Juice Using a Real-Time Fluorescent TaqMan PCR AssayReportar como inadecuado




Rapid and Quantitative Detection of Leifsonia xyli subsp. xyli in Sugarcane Stalk Juice Using a Real-Time Fluorescent TaqMan PCR Assay - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

BioMed Research International - Volume 2016 2016, Article ID 2681816, 8 pages -

Research ArticleNational Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China

Received 22 June 2016; Revised 6 August 2016; Accepted 10 August 2016

Academic Editor: Francesca Mancianti

Copyright © 2016 Hua-Ying Fu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Ratoon stunting disease RSD of sugarcane, one of the most important diseases seriously affecting the productivity of sugarcane crops, was caused by the bacterial agent Leifsonia xyli subsp. xyli Lxx. A TaqMan probe-based real-time quantitative polymerase chain reaction qPCR assay was established in this study for the quantification of Lxx detection in sugarcane stalk juice. A pair of PCR primers Pat1-QF-Pat1-QR and a fluorogenic probe Pat1-QP targeting the Part1 gene of Lxx were used for the qPCR assay. The assay had a detection limit of 100 copies of plasmid DNA and 100 fg of Lxx genomic DNA, which was 100-fold more sensitive than the conventional PCR. Fifty 28.7% of 174 stalk juice samples from two field trials were tested to be positive by qPCR assay, whereas, by conventional PCR, only 12.1% 21-174 were tested to be positive with a published primer pair CxxITSf#5-CxxITSr#5 and 15.5% 27-174 were tested to be positive with a newly designed primer pair Pat1-F2-Pat1-R2. The new qPCR assay can be used as an alternative to current diagnostic methods for Lxx, especially when dealing with certificating a large number of healthy cane seedlings and determining disease incidence accurately in commercial fields.





Autor: Hua-Ying Fu, Sheng-Ren Sun, Jin-Da Wang, Kashif Ahmad, Heng-Bo Wang, Ru-Kai Chen, and San-Ji Gao

Fuente: https://www.hindawi.com/



DESCARGAR PDF




Documentos relacionados