Figure 8.

Visualization of Cellulose Microfibrils in the Innermost Layer of Fiber Cell Walls.

(A) Longitudinal section of the nonelongating region of a wild-type stem showing interfascicular fiber cells (arrow).

(B) Cellulose microfibrils in the middle part of a wild-type fiber cell. Note that microfibrils run in parallel at an angle of 15 to 25° relative to the transverse orientation.

(C) Longitudinal section of the nonelongating region of a fra2 stem showing interfascicular fiber cells (arrow).

(D) Cellulose microfibrils in the middle part of a fra2 fiber cell showing a disoriented pattern.

Bars in (A) and (C) = 25 μm; bars in (B) and (D) = 0.5 μm.