Journal of Phytopathology and Pest Management 4(2): 30-37, 2017
pISSN:2356-8577 eISSN: 2356-6507
Journal homepage: http://ppmj.net/
∗
Corresponding author: M. A. El-Qurashi,
E-mail: mostafa.elqurashi@agr.au.edu.eg
30
Copyright © 2017
Morphological and molecular identification of
root-knot nematodes infecting pomegranate in
Assiut Governorate, Egypt
M. A. El-Qurashi
1*
, Aida M. I. El-Zawahry
1
, K. M. H. Abd-El-Moneem
1
, M. I. Hassan
2
1
Department of Plant Pathology, Faculty of Agriculture, Assiut University, Assiut, Egypt
2
Department of Genetics, Faculty of Agriculture, Assiut University, Assiut, Egypt
Abstract
Key words: Root-knot nematodes, Meloidogyne javanica, pomegranate, perineal patterns, polymerase
chain reaction, SCAR markers.
Root-knot nematodes are the most plant parasitic nematodes causing serious damage
in pomegranate. Accurate identification of Meloidogyne species is of great importance
for effective management of root-knot nematodes. Morphological identification of
Meloidogyne spp. has been long and extensively used. However, molecular diagnostics
was reported as a replacement or a complement method. Examination of the perineal
patterns of the female was typically identified the nematode isolates as M. javanica
which was dominant in all five pomegranate samples. For further confirmation of
identification, a polymerase chain reaction (PCR)-based assay with two species-
specific sequence characterized amplified regions (SCAR) primer sets was performed.
The Fjav/Rjav and MJ-F/MJ-R primers efficiently amplified SCAR markers of 670
and 517 bp, respectively, which were previously reported for M. javanica. These
results support that SCAR markers are a powerful tool for rapid and effective
detection and could be used as a complementary tool together with the morphological
identification of root-knot nematodes.