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. 2017 Jul 25;16(1):124–136. doi: 10.1111/pbi.12754

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© 2017 The Authors. Plant Biotechnology Journal published by Society for Experimental Biology and The Association of Applied Biologists and John Wiley & Sons Ltd.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Stem anatomy of EgLBD22‐oe, EgLBD29‐oe and EgLBD37‐oe and wild‐type hybrid poplar (Populus glandulossa × Populus alba) trees. Fixed stem sections were stained with safranin and fast green (Gefan biotechnology Co. Ltd., Shanghai). (a, e) Stem structure of ten‐week‐old wild‐type 84k plant. (b, f) Stem structure of ten‐week‐old EgLBD37‐oe plant. (c, g) Stem structure of ten‐week‐old EgLBD29‐oe plant. (d, h) Stem structure of ten‐week‐old EgLBD22‐oe plant. In EgLBD37‐oe plant, the overall width of cortex region and the lignified component was significantly increased (b, f). Increased phloem fibre production in the EgLBD29‐oe plant was observed (arrow in g) when compared with wild‐type 84k (arrow in e), EgLBD37‐oe (arrow in f) and EgLBD22‐oe plant (arrow in h).