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Cited by 194Plant Molecular Biology ResearchLeaf Properties and Growth MeasurementDevelopmental Biology and Gene Regulation

Cytokinin Regulates Compound Leaf Development in Tomato

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Shani, Eilon, Ben-Gera, Hadas, Shleizer-Burko, Sharona, Burko, Yogev, Weiss, David, Ori, Naomi·2010·The Plant Cell
DOI 10.1105/tpc.110.078253PMC PMC2990126
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Abstract

Leaf shape diversity relies on transient morphogenetic activity in leaf margins. However, how this morphogenetic capacity is maintained is still poorly understood. Here, we uncover a role for the hormone cytokinin (CK) in the regulation of morphogenetic activity of compound leaves in tomato (Solanum lycopersicum). Manipulation of CK levels led to alterations in leaf complexity and revealed a unique potential for prolonged growth and morphogenesis in tomato leaves. We further demonstrate that the effect of CK on leaf complexity depends on proper localization of auxin signaling. Genetic analysis showed that reduction of CK levels suppresses the effect of Knotted1 like homeobox (KNOXI) proteins on leaf shape and that CK can substitute for KNOXI activity at the leaf margin, suggesting that CK mediates the activity of KNOXI proteins in the regulation of leaf shape. These results imply that CK regulates flexible leaf patterning by dynamic interaction with additional hormones and transcription factors.

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Crossref · 10.1105/tpc.110.078253

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  • Tomato DR5:VENUS signal was strong in incipient leaf primordia (P0), indicating a strong auxin response in this region.

    “Tomato plants harboring a DR5:VENUS construct (Shani et al., 2010) revealed a strong DR5:VENUS signal in incipient leaf primordia (P0) (Figure 5A), indicating a strong auxin response in this region.”

    From Auxin Depletion from the Leaf Axil Conditions Competence for Axillary Meristem Formation in <i>Arabidopsis</i> and Tomato (2014) · cites this paper as Shani et al., 2010

  • High CK concentrations promote leaflet formation, while low CK concentrations restrict it.

    “These data suggest that high CK concentrations promote leaflet formation, while low CK concentrations restrict it.”

    From <i>Divide et impera</i>: boundaries shape the plant body and initiate new meristems (2016) · cites this paper as Shani et al., 2010

  • Manipulation of CK concentrations does not interfere with auxin distribution in transgenic tomato plants.

    “In these transgenic plants, auxin response patterns, as indicated by the DR5::VENUS and PIN1::PIN1-GFP reporters, remained unchanged, suggesting that manipulation of CK concentrations does not interfere with auxin distribution (Shani et al., 2010).”

    From <i>Divide et impera</i>: boundaries shape the plant body and initiate new meristems (2016) · cites this paper as Shani et al., 2010

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Authors
Shani, E., Ben-Gera, H., Shleizer-Burko, S., Burko, Y., Weiss, D., & Ori, N.
Affiliations
  • Hebrew University of Jerusalem (IL)
  • The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture and The Otto Warburg Minerva Center for Agricultural Biotechnology, Hebrew University, Rehovot 76100, Israel
ORCID
Venue
The Plant Cell
Publisher
Oxford University Press (OUP)
Published
2010-10-01
Volume
22
Issue
10
Pages
3206-3217
ISSN
  • 1040-4651 (ISSN-L)
  • 1532-298X
DOI
10.1105/tpc.110.078253
PMC
PMC2990126
OpenAlex
W2143684085
Cited by
194
References
3
Citations by year
2026: 9 · 2025: 6 · 2024: 13 · 2023: 9 · 2022: 17 · 2021: 13 · 2020: 13 · 2019: 14 · 2018: 10 · 2017: 6 · 2016: 12 · 2015: 9 · 2014: 12 · 2013: 22 · 2012: 18
FWCI
19.25
Type
journal article
Language
en
Open access
Licence
academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model (vor)
Locations
  • The Plant Cell (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Leaf Properties and Growth Measurement
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
cytokinins, compound leaf development, tomato, leaf shape, auxin signaling, leaf patterning, plant hormone interaction
MeSH terms
Cytokinins, Indoleacetic Acids, Plant Proteins, Homeodomain Proteins, Gene Expression Regulation, Plant, Gene Expression Regulation, Developmental, Plant Leaves, Solanum lycopersicum, RNA, Plant

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