Fig. 3From: Self S-RNase reduces the expression of two pollen-specific COBRA genes to inhibit pollen tube growth in pearPbCOB.A.1 and PbCOB.A.2 promote pollen tube growth. a The length of pollen tubes treated with the recombinant protein of PbCOB.A.1 or PbCOB.A.2, His-tag (Empty vector), and buffer (control). b The length of pollen tubes co-treated with the recombinant protein of PbCOB.A.1 and self or non-self S-RNase. c The length of pollen tubes co-treated with the recombinant protein of PbCOB.A.2 and self or non-self S-RNase. Standard error was calculated from at least 90 pollen tubes. Analysis of variance was calculated by Student’s t-test. Lowercase letters (a and b) indicate P < 0.05Back to article page