Histopathological Changes in Banana Roots Caused by Pratylenchus Coffeae, Meloidogyne Incognita and Radopholus Similis, and Identification of Rapd Markers Associated With P. Coffeae Resistance

Histopathological Modifications in Musa cavendishii Roots Induced by Radopholus similis and Meloidogyne incognita

“…The lignified cells were spread abundantly were found in the vascular cylinder. Same results reported by Nithya et al (2007) and Valette et al (1998).…”

“…Generally, a few of phenolic and lignified cells were showed in the vascular cylinder compared with the cortex layer, which were contained moderate number of phenolic and lignified cells after R. similis penetration. Similar observations reported by Valette et al (1998) andNithya et al (2007) revealed that a few of phenolic and lignified cells were the formed by R. similis in the damaged cells of cortex in susceptible of banana cultivars, and suggested that this bodies had appositive correlating with cultivar resistance to nematode infestation. Where, these bodies contributed in increasing the resistance of the host against the plant-parasitic nematodes through some methods, which indicated by Ride (1975); formed in chemical modification through the cell wall lacerating by the nematode enzymes (Vaganan, 2014); normal reaction of the cell wall to the spread of nematode toxins to the host, or formed by the host to limiting the pathogen nutrition process (Nicholson and Hammerschmidt, 1992;Appel, 1993).…”

“…This study showed that Radopholus similis and Meloidogyne incognita is able to develop as affected pathogens on banana, Musa cavendishii, through the significantly histological modifications in roots tissues structure (Wuyts et al, 2007). The histological symptoms were varied as a result of the invasion, penetration and feeding process of M. incognita, where this study showed that the formation of multinucleate cells, giant cells, hypertrophic nuclei cells (Nithya et al, 2007). In giant cells were observed as normal form but we noted that the giant cells at each site of infections were varied and the number of radial cells ranges between five and six cells in one group.…”