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Cited by 223

The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.

Auxin Acts in Xylem-Associated or Medullary Cells to Mediate Apical Dominance

Open access
Booker, Jonathan, Chatfield, Steven, Leyser, Ottoline·2003·The Plant Cell

Abstract

A role for auxin in the regulation of shoot branching was described originally in the Thimann and Skoog model, which proposes that apically derived auxin is transported basipetally directly into the axillary buds, where it inhibits their growth. Subsequent observations in several species have shown that auxin does not enter axillary buds directly. We have found similar results in Arabidopsis. Grafting studies indicated that auxin acts in the aerial tissue; hence, the principal site of auxin action is the shoot. To delineate the site of auxin action, the wild-type AXR1 coding sequence, which is required for normal auxin sensitivity, was expressed under the control of several tissue-specific promoters in the auxin-resistant, highly branched axr1-12 mutant background. AXR1 expression in the xylem and interfascicular schlerenchyma was found to restore the mutant branching to wild-type levels in both intact plants and isolated nodes, whereas expression in the phloem did not. Therefore, apically derived auxin can suppress branching by acting in the xylem and interfascicular schlerenchyma, or in a subset of these cells.

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Metadata

Authors
Booker, J., Chatfield, S., & Leyser, O.
Venue
The Plant Cell
Published
2003-01-23
Volume
15
Issue
2
Pages
495-507
ISSN
  • 1040-4651 (ISSN-L)
  • 1532-298X
OpenAlex
W2113281628
Cited by
223
References
17
FWCI
11.09
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Auxin Acts in Xylem-Associated or Medullary Cells to Mediate Apical Dominance. https://app.cochat.ai/papers/10.1105/tpc.007542
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Booker, J., Chatfield, S., & Leyser, O. (2003). Auxin Acts in Xylem-Associated or Medullary Cells to Mediate Apical Dominance. The Plant Cell. https://doi.org/10.1105/tpc.007542

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