Figure 2.

The yip4a yip4b Double Mutant Displays an Elongation Deficit.

(A) Five-week-old wild type (WT; Col-0), yip4a-2 and yip4b single mutant, yip4a-1 yip4b and yip4a-2 yip4b double mutant, and yip4a-2 yip4b rescued by expression of YIP4a (HA N-terminal fusion) and YIP4b under their own promoter.

(B) Root length measurements of 10-d-old wild-type, yip4a yip4b, and ech seedlings grown in vitro (three replicates, each with 15 seedlings; average ± sd).

(C) Etiolated hypocotyl length measurements of 5-d-old wild-type, yip4a yip4b, and ech seedlings grown in vitro in darkness (three replicates, each with 15 seedlings; average ± sd).

(D) Etiolated hypocotyl growth kinematic of the wild type, yip4a yip4b, ech, and ech yip4a yip4b triple mutant (n = 10, average ±sd). Significant differences are indicated as *P < 0.05, **P < 0.01, and ***P < 0.001 (t test).

[See online article for color version of this figure.]