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TRANSPORTER OF IBA1 Links Auxin and Cytokinin to Influence Root Architecture.

Publication ,  Journal Article
Michniewicz, M; Ho, C-H; Enders, TA; Floro, E; Damodaran, S; Gunther, LK; Powers, SK; Frick, EM; Topp, CN; Frommer, WB; Strader, LC
Published in: Developmental cell
September 2019

Developmental processes that control root system architecture are critical for soil exploration by plants, allowing for uptake of water and nutrients. Conversion of the auxin precursor indole-3-butyric acid (IBA) to active auxin (indole-3-acetic acid; IAA) modulates lateral root formation. However, mechanisms governing IBA-to-IAA conversion have yet to be elucidated. We identified TRANSPORTER OF IBA1 (TOB1) as a vacuolar IBA transporter that limits lateral root formation. Moreover, TOB1, which is transcriptionally regulated by the phytohormone cytokinin, is necessary for the ability of cytokinin to exert inhibitory effects on lateral root production. The increased production of lateral roots in tob1 mutants, TOB1 transport of IBA into the vacuole, and cytokinin-regulated TOB1 expression provide a mechanism linking cytokinin signaling and IBA contribution to the auxin pool to tune root system architecture.

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Published In

Developmental cell

DOI

EISSN

1878-1551

ISSN

1534-5807

Publication Date

September 2019

Volume

50

Issue

5

Start / End Page

599 / 609.e4

Related Subject Headings

  • Vacuoles
  • Plant Roots
  • Intracellular Membranes
  • Indoles
  • Indoleacetic Acids
  • Developmental Biology
  • Cytokinins
  • Arabidopsis Proteins
  • Arabidopsis
  • Anion Transport Proteins
 

Citation

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Michniewicz, M., Ho, C.-H., Enders, T. A., Floro, E., Damodaran, S., Gunther, L. K., … Strader, L. C. (2019). TRANSPORTER OF IBA1 Links Auxin and Cytokinin to Influence Root Architecture. Developmental Cell, 50(5), 599-609.e4. https://doi.org/10.1016/j.devcel.2019.06.010
Michniewicz, Marta, Cheng-Hsun Ho, Tara A. Enders, Eric Floro, Suresh Damodaran, Lauren K. Gunther, Samantha K. Powers, et al. “TRANSPORTER OF IBA1 Links Auxin and Cytokinin to Influence Root Architecture.Developmental Cell 50, no. 5 (September 2019): 599-609.e4. https://doi.org/10.1016/j.devcel.2019.06.010.
Michniewicz M, Ho C-H, Enders TA, Floro E, Damodaran S, Gunther LK, et al. TRANSPORTER OF IBA1 Links Auxin and Cytokinin to Influence Root Architecture. Developmental cell. 2019 Sep;50(5):599-609.e4.
Michniewicz, Marta, et al. “TRANSPORTER OF IBA1 Links Auxin and Cytokinin to Influence Root Architecture.Developmental Cell, vol. 50, no. 5, Sept. 2019, pp. 599-609.e4. Epmc, doi:10.1016/j.devcel.2019.06.010.
Michniewicz M, Ho C-H, Enders TA, Floro E, Damodaran S, Gunther LK, Powers SK, Frick EM, Topp CN, Frommer WB, Strader LC. TRANSPORTER OF IBA1 Links Auxin and Cytokinin to Influence Root Architecture. Developmental cell. 2019 Sep;50(5):599-609.e4.
Journal cover image

Published In

Developmental cell

DOI

EISSN

1878-1551

ISSN

1534-5807

Publication Date

September 2019

Volume

50

Issue

5

Start / End Page

599 / 609.e4

Related Subject Headings

  • Vacuoles
  • Plant Roots
  • Intracellular Membranes
  • Indoles
  • Indoleacetic Acids
  • Developmental Biology
  • Cytokinins
  • Arabidopsis Proteins
  • Arabidopsis
  • Anion Transport Proteins