RT info:eu-repo/semantics/article
T1 Influence of the ectomycorrhizal fungus Laccaria laccata on pre-emergence, post-emergence an late damping-off by Fusarium oxysporum and F. verticillioides on Stone pine seedlings
A1 Machón, P.
A1 Pajares Alonso, Juan Alberto
A1 Díez Casero, Julio Javier
A1 Alves Santos, Fernando Manuel
K1 Forest nursery
K1 Fusarium damping-off
K1 Laccaria laccata
K1 Mycorrhization
K1 Pinus pinea
K1 Plant protection
K1 3108 Fitopatología
AB In greenhouse experiments, the ectomycorrhizal fungus Laccaria laccata was evaluated for biological control of preemergence,post-emergence and late damping-off of Pinus pinea caused by Fusarium verticillioides and F. oxysporum.In pre-emergence damping-off assays, preinoculation with Laccaria laccata did not significantly improve germination ofseeds and no statistical significant differences were found in Fusarium treatments when compared with controls. At 18weeks after sowing, inoculation with L. laccata reduced the incidence of post-emergence damping-off but differences weresignificant only in F. oxysporum treatments. Pinus pinea transplanted plants were used in late damping off assays, and onlyF. oxysporum produced significant damage. Inoculation with L. laccata did not attenuate significantly the virulence ofF. oxysporum. However, the percentage of mycorrhization did not reached significant level, so the amount of mycorrhizalfungus was insufficient for effective protection. Although very low percentages of mycorrhization were recorded in allmycorrhized treatments, and Fusarium occurrence significantly reduced mycorrhization, those levels have been efficient toreduce damage in F. oxysporum post-emergence damping-off assays. In short, pre-emergence damping-off was not found;only F. oxysporum produced significant damage on P. pinea seedlings and L. laccata reduced damage when the percentageof mycorrhization reached a significant level. These results have been compared with previous work on P. sylvestrisinoculated with the same mycorrhizae isolate and Fusarium pathogens.
PB Springer
SN 0334-5114
YR 2009
FD 2009
LK https://uvadoc.uva.es/handle/10324/65410
UL https://uvadoc.uva.es/handle/10324/65410
LA eng
NO Symbiosis, 2009, vol. 49, p. 101-109
NO Producción Científica
DS UVaDOC
RD 27-dic-2024