Grass pea and pea phylogenetic relatedness reflected at Fusarium oxysporum host range

Vascular wilt, caused by the infection of soil-borne pathogen Fusarium oxysporum (Fo), is one most destructive diseases many crops, including legumes such as grass pea (Lathyrus sativus), with several formae speciales (ff. spp.) defined according to their hosts. Commonly described host-specific, Fo could, in some cases, show a broader host range comprising related plant species, making its characterization an important aspect epidemiology and crop protection. No information on identification status strains able infect available, nor whether could act different ff. spp.. In this study, two isolated from (Fo ex. L. sativus 1 2) was evaluated using legume species: (Pisum sativum), lentil (Lens culinaris), chickpea (Cicer arietinum), common bean (Phaseolus vulgaris), barrel medic (Medicago truncatula). addition, responses causal agents fusarium wilt these f. sp. pisi, lentis, ciceris, phaseoli, medicaginis, were also investigated. Disease symptom evaluation disease rating over time, area under progress curve (AUDPC) rate (DIr), revealed that 2 are infecting only although low aggressiveness. Grass be infected pisi races, race being virulent strain pea, even more than retrieved originally pea. The phylogenetic relatedness between may part explain observation, indicating can legume-related species Additionally, specialization might occurring, particular isolates lower virulence itself. These cross-inoculation results reinforce importance performing host-range studies, specialist pathogens, identify potential closely alternative hosts consequently improve or adapt control management.