Skip to main content

Leaf-induced gibberellin signaling is essential for internode elongation, cambial activity, and fiber differentiation in tobacco stems.

Publication ,  Journal Article
Dayan, J; Voronin, N; Gong, F; Sun, T-P; Hedden, P; Fromm, H; Aloni, R
Published in: The Plant cell
January 2012

The gibberellins (GAs) are a group of endogenous compounds that promote the growth of most plant organs, including stem internodes. We show that in tobacco (Nicotiana tabacum) the presence of leaves is essential for the accumulation of bioactive GAs and their immediate precursors in the stem and consequently for normal stem elongation, cambial proliferation, and xylem fiber differentiation. These processes do not occur in the absence of maturing leaves but can be restored by application of C(19)-GAs, identifying the presence of leaves as a requirement for GA signaling in stems and revealing the fundamental role of GAs in secondary growth regulation. The use of reporter genes for GA activity and GA-directed DELLA protein degradation in Arabidopsis thaliana confirms the presence of a mobile signal from leaves to the stem that induces GA signaling.

Duke Scholars

Published In

The Plant cell

DOI

EISSN

1532-298X

ISSN

1040-4651

Publication Date

January 2012

Volume

24

Issue

1

Start / End Page

66 / 79

Related Subject Headings

  • Signal Transduction
  • Plant Stems
  • Plant Leaves
  • Plant Biology & Botany
  • Nicotiana
  • Molecular Sequence Data
  • Gibberellins
  • 3108 Plant biology
  • 0607 Plant Biology
  • 0604 Genetics
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Dayan, J., Voronin, N., Gong, F., Sun, T.-P., Hedden, P., Fromm, H., & Aloni, R. (2012). Leaf-induced gibberellin signaling is essential for internode elongation, cambial activity, and fiber differentiation in tobacco stems. The Plant Cell, 24(1), 66–79. https://doi.org/10.1105/tpc.111.093096
Dayan, Jonathan, Nickolay Voronin, Fan Gong, Tai-ping Sun, Peter Hedden, Hillel Fromm, and Roni Aloni. “Leaf-induced gibberellin signaling is essential for internode elongation, cambial activity, and fiber differentiation in tobacco stems.The Plant Cell 24, no. 1 (January 2012): 66–79. https://doi.org/10.1105/tpc.111.093096.
Dayan J, Voronin N, Gong F, Sun T-P, Hedden P, Fromm H, et al. Leaf-induced gibberellin signaling is essential for internode elongation, cambial activity, and fiber differentiation in tobacco stems. The Plant cell. 2012 Jan;24(1):66–79.
Dayan, Jonathan, et al. “Leaf-induced gibberellin signaling is essential for internode elongation, cambial activity, and fiber differentiation in tobacco stems.The Plant Cell, vol. 24, no. 1, Jan. 2012, pp. 66–79. Epmc, doi:10.1105/tpc.111.093096.
Dayan J, Voronin N, Gong F, Sun T-P, Hedden P, Fromm H, Aloni R. Leaf-induced gibberellin signaling is essential for internode elongation, cambial activity, and fiber differentiation in tobacco stems. The Plant cell. 2012 Jan;24(1):66–79.

Published In

The Plant cell

DOI

EISSN

1532-298X

ISSN

1040-4651

Publication Date

January 2012

Volume

24

Issue

1

Start / End Page

66 / 79

Related Subject Headings

  • Signal Transduction
  • Plant Stems
  • Plant Leaves
  • Plant Biology & Botany
  • Nicotiana
  • Molecular Sequence Data
  • Gibberellins
  • 3108 Plant biology
  • 0607 Plant Biology
  • 0604 Genetics