Avaliação antagônica in vitro e in vivo de Trichoderma spp. a Rhizopus stolonifer em maracujazeiro amarelo

Abstract

Flora l rot of pa ssion fru it is ca u sed by the fu ngu s Rh izo p u s stolonifer, which attacks newly open flowers and young little fruits. The infection starts in the inner pa rts of the flower bu ds where it causes water-soaked lesions, whose floral tissues acquire a dark-brown coloration. The presence of dark mycelium and fungus fructification

Antagonism and Effect of Volatile Metabolites of Trichoderma spp. on Cladosporium spp.

“…All Trichoderma species presented significant antagonistic effect against F. solani isolates, in which control obtained an exceptionally larger mycelial growth value when compared to those obtained by cultures in the presence of the antagonist agent. This result corroborates those obtained in the studies performed by Bomfim et al (2010), who tested the in vitro antagonism of T. viride, T. harzianum, T. stromaticum and T. virens against Rhizopus stolonifer isolates, where T. viride had greater inhibition of the pathogen growth, while T. stromaticum and T. virens had lower inhibition potential when compared to the other species. Nevertheless, all biocontrol agents differed from control.…”

Survey of endophytic Alternaria species isolated from plants in the Brazilian restinga biome

“…Although many tests have already been performed demonstrating antimicrobial activity against Staphylococcus aureus, Bacillus subtilis, Micrococcus luteus and Pseudomonas aeruginosa [69; 67], the bioactive metabolites are promising against pathogenic fungi which cause plant disease, such as those applied for the control of Fusarium solani [70].The production of non-volatile metabolites by one of the antagonists here caused a reduction in the mycelial development of the phytopathogen T. paradoxa, confirming that the production of antibiotics may be more important in the inhibition of other organisms than the competition for nutrients [71]. Among the effects caused by antibiotics, reduction or paralysis of growth and sporulation, reduction in spore germination, hyphal distortion and endolysis may be observed [55].…”

“…The control treatment consisted of monitoring T. paradoxa development on PDA plates after removal of the cellophane, where the same fungus had been growing, for 4 to 11 days. Three replicate plates were used for each treatment [55].…”

Antagonismo de Trichoderma SPP. E Bacillus subtilis (UFV3918) a Fusarium sambucinum em Pinus elliottii engelm

“…(2,21 cm) (Tabela 2). Bonfim et al (2010) destacaram uma rápida ação antagônica de Trichoderma spp. sobre Rhyzopus stolonifer, com inibição do crescimento micelial do patógeno em apenas 72 h de confronto.…”