Table 1.

Fmk1 and Mpk1, but not Hog1, are required for vegetative hyphal fusion (VHF) in Fusarium oxysporum.

Strain	VHF
wt	+
fmk1Δ	−
fmk1Δ + fmk1	+
mpk1Δ	−
mpk1Δ + mpk1	+
hog1Δ#14	+
hog1Δ#15	+
fmk1Δ mpk1Δ	−
fmk1Δ hog1Δ	−
mpk1Δ hog1Δ	−

Presence (+) or absence (−) of VHF was determined by spreading microconidia on top of a plate containing 4 mL of solid minimal medium. After 14 h at 28° C, VHF events were observed microscopically. Three hundred germlings were examined for each isolate and each experiment was repeated at least three times.