Table 1.

Genetic interactions of rng8Δ, rng9Δ, and myo51 mutations with other cytokinesis mutations

Parent 1a Parent 2a Percentage of viable double mutants at 25°C Total number of tetrads Genetic interaction at 25°Cb 
rng8Δ myo2-E1 33 19 +++ 
rng8Δ rlc1Δ 43 36c +++ 
rng8Δ myp2Δ 100 24 ++ 
rng8Δ myo2-ΔIQ1 ΔIQ2 100 17 
rng8Δ ain1Δ 100 18 +d 
rng8Δ cdc3-124 100 17 +e 
rng8Δ cdc8-110 100 16 − 
rng8Δ clp1Δ 100 12 − 
rng8Δ mid1-6 100 12 − 
rng8Δ mid1-366 100 11 − 
rng9Δ myo2-E1 43 23 +++ 
rng9Δ rlc1Δ 25 19 +++ 
rng9Δ myp2Δ 100 18 ++ 
myo51Δ myo2-E1 43 17 +++ 
myo51Δ rlc1Δ 30 21 +++ 
myo51Δ myp2Δ 96 20 ++ 
myo51Δ ain1Δ 100 22 +d 
myo51Δ rng8Δ 100 17 − 
myo51(753–1,471) myo2-E1 44 19 +++ 
myo51(901–1,471) myo2-E1 45 22 +++ 
myo51(1–1,294) myo2-E1 78 20 ++ 
myo51(753–1,471) myp2Δ 100 18 − 
myo51(901–1,471) myp2Δ 100 14 − 
myo51(1–1,294) myp2Δ 100 20 ++ 
Parent 1a Parent 2a Percentage of viable double mutants at 25°C Total number of tetrads Genetic interaction at 25°Cb 
rng8Δ myo2-E1 33 19 +++ 
rng8Δ rlc1Δ 43 36c +++ 
rng8Δ myp2Δ 100 24 ++ 
rng8Δ myo2-ΔIQ1 ΔIQ2 100 17 
rng8Δ ain1Δ 100 18 +d 
rng8Δ cdc3-124 100 17 +e 
rng8Δ cdc8-110 100 16 − 
rng8Δ clp1Δ 100 12 − 
rng8Δ mid1-6 100 12 − 
rng8Δ mid1-366 100 11 − 
rng9Δ myo2-E1 43 23 +++ 
rng9Δ rlc1Δ 25 19 +++ 
rng9Δ myp2Δ 100 18 ++ 
myo51Δ myo2-E1 43 17 +++ 
myo51Δ rlc1Δ 30 21 +++ 
myo51Δ myp2Δ 96 20 ++ 
myo51Δ ain1Δ 100 22 +d 
myo51Δ rng8Δ 100 17 − 
myo51(753–1,471) myo2-E1 44 19 +++ 
myo51(901–1,471) myo2-E1 45 22 +++ 
myo51(1–1,294) myo2-E1 78 20 ++ 
myo51(753–1,471) myp2Δ 100 18 − 
myo51(901–1,471) myp2Δ 100 14 − 
myo51(1–1,294) myp2Δ 100 20 ++ 
a

Single parent mutants were 95–100% viable on tetrad plates at 25°C.

b

Cells were grown exponentially in YE5S liquid medium before checking the morphology under DIC. The severity of cytokinesis defects compared to the parents (in terms of abnormal septation) was classified as: “+++,” very strong synthetic interaction and very severe cytokinesis defects; “++,” strong synthetic interaction and prominent cytokinesis defects; “+,” mild synthetic interaction and moderate cytokinesis defects; or “−,” no additive cytokinesis defects.

c

rng8 and rlc1 genes are tightly linked (∼34 kb) and only seven colonies were predicted double mutants in this cross.

d

The interaction was more obvious in EMM5S.

e

The interaction was more obvious at 28°C.

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