Figure 4.

Phenotypes of ae3-1 as2-101 Leaves.

(A) Later-appearing ae3-1 as2-101 rosette leaves, which all show a needle-like structure.

(B) An inflorescence branch of ae3-1 as2-101, showing that cauline leaves are needle-like.

(C) to (E) Epidermis of a needle-like leaf in ae3-1 as2-101.

(D) and (E) Close-ups of epidermis in (C), corresponding to the boxed regions indicated by d and e, respectively.

(F) A transverse section, showing a vascular bundle at the proximal part of an ae3-1 as2-101 needle-like rosette leaf with a phloem-surrounding-xylem structure. Arrowheads indicate phloem.

Bars = 150 μm in (A) and (C), 5 mm in (B), and 50 μm in (D) to (F).