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Fig. 4 | BMC Plant Biology

Fig. 4

From: Jasmonate promotes auxin-induced adventitious rooting in dark-grown Arabidopsis thaliana seedlings and stem thin cell layers by a cross-talk with ethylene signalling and a modulation of xylogenesis

Fig. 4

Histological images of Ws and opr3 IBA + Kin-TCLs cultured with or without MeJA. (a-f) Longitudinal radial sections of Ws (a, c, e) and opr3 (b, d, f) TCLs cultured in the absence of MeJA (a, b), or in the presence of either 0.01 μM MeJA (c, d) or 10 μM MeJA (e, f). (a) Cell divisions starting from the stem endodermis (day 3). (b) Meristematic cell clusters organized by the endodermis derivative cells (day 5). (c) Elongating ARs protruding from the explant (day 15). (d) ARPs (on the left, longitudinal section view) and ARs (on the right, transection view) at day 15. (e) Xylary elements (arrow) differentiating from the endodermis-derived cells (day 15). (f) Hypertrophic cells and de novo formed xylary elements (arrow) surrounding a meristematic cell cluster (magnified in the Inset) (day 15). Sections stained with toluidine blue. (Images from the first replicate). Bars = 50 μm (a, b, e and Inset in f), 100 μm (c, d, f)

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BMC Plant Biology

ISSN: 1471-2229

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