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. 2014 Apr 17;65(12):3097–3110. doi: 10.1093/jxb/eru153

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© The Author 2014. Published by Oxford University Press on behalf of the Society for Experimental Biology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2. — DRNL marks bract founder cells and shows an interplay between bract and abaxial sepal initiation in lfy and puchi. (A) DRNL::GFP expression in a puchi inflorescence (top view) showing the IM and different floral stages. DRNL expression in the IM marks a bract that separates from the IM before sepal initiation. (B) DRNL::GFP expression (top view) in a lfy inflorescence showing different floral stages. Note bract expression in incipient and early FMs as the bract separates from the IM and elongates. Asterisks mark the continued spiral phyllotaxis of DRNL expression within the FM after sepal initiation. (C) Close-up of the inset in B, showing the resumption of a spiral phyllotaxis in the lfy IM with a divergence angle of 137.5^o. (D–K) DRNL::GFP marks an elongating bract outgrowing from the IM in D (puchi) and H (lfy); a bract and two lateral sepals in a lateral oblique view of a stage-2 flower of E (puchi) and I (lfy); a bract, lateral, and abaxial sepal in a lateral oblique view of a stage-2 flower of F (puchi) and J (lfy); a bract, lateral, abaxial, and adaxial sepal in a late stage-2 flower of G (puchi) and K (lfy). Abbreviations: as in Fig. 1 and FM=floral meristem; br=bract. Asterisks show the resumed spiral phyllotaxy of organ initiation in lfy. Red represents chlorophyll autofluorescence. (This figure is available in colour at JXB online.)