Comparison of primary root growth of transgenic <i>Arabidopsis</i> plants expressing mAb CO (CO) and mAb COK (COK) under <i>in vitro</i> and <i>in vivo</i> conditions.

(A) In vitro germinated seedlings examined two weeks after sowing on MS media. The scale bar represents 1 cm in each photograph. (B) Comparison of average primary root lengths of transgenic Arabidopsis plants expressing CO and COK grown under in vitro conditions. (C) Roots of in vivo CO and COK plant seedlings 10 weeks after transplanting from in vitro growth to a soil pot. (D) Comparison of average root lengths of transgenic Arabidopsis plants expressing CO and COK grown in a chamber for 10 weeks. Error bars represent the mean ± SD. Statistically significant differences are indicated by asterisks (**: p < 0.01; NS: not significant).