Phenotypes of transformants.

<p>(a) Micrographs of chloronema and caulonema cells of the wild type (WT), <i>PpLrgB1</i> single-(ΔB1)#2, <i>PpLrgB2</i> single (ΔB2)#5 and double (ΔB1/ΔB2)#1-knockout lines, and ΔB1 complemented with the <i>AtLrgB</i> gene (ΔB1 + AtLrgB)#5. Chloronema and caulonema cells of WT and ΔB1#2 plants grown under high-CO₂ conditions for 5 days are also presented. (b) Measurement method for bending angle (θ).