Anatomical changes induced by two soilborne pathogens (Plasmodiophora brassicae and Meloidogyne javanica) on cabbage.
Abstract
Stunted growth of large patches of cabbage CV. Lupini, associated with severe soil infestations by the root-knot nematodeMeloidogynejauanica and the protist Plasmodiophora brassicae, the casual agent of clubroot disease, was observed in severalfields at Castellaneta, province of Taranto, in southern Italy. The host-parasite responses of cabbage roots to parasitism by the twosoil-borne pathogens was studied and compared. In roots infected by P. brassicae, the plasmodia were present in cortex and pericyclecells, causing hypertrophy and hyperplasia, and developed into resting spores within host tissues. Parasitism of M. jauanicawas characterized by the establishment of distinct permanent feeding sites with giant cells in the cortex, endodermis and vascularparenchyma, which limit water and nutrient translocation.
Autore Pugliese
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Navas-Cortés J. A.; Vovlas N.; Trisciuzzi N.; Castillo P.; Troccoli A.
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Anno di pubblicazione
2010
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