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Cytokinin regulates compound leaf development in tomato.
Plant Cell. 2010 Oct; 22(10):3206-17.PC

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.

Authors+Show Affiliations

The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University, Rehovot, Israel.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

20959562

Citation

Shani, Eilon, et al. "Cytokinin Regulates Compound Leaf Development in Tomato." The Plant Cell, vol. 22, no. 10, 2010, pp. 3206-17.
Shani E, Ben-Gera H, Shleizer-Burko S, et al. Cytokinin regulates compound leaf development in tomato. Plant Cell. 2010;22(10):3206-17.
Shani, E., Ben-Gera, H., Shleizer-Burko, S., Burko, Y., Weiss, D., & Ori, N. (2010). Cytokinin regulates compound leaf development in tomato. The Plant Cell, 22(10), 3206-17. https://doi.org/10.1105/tpc.110.078253
Shani E, et al. Cytokinin Regulates Compound Leaf Development in Tomato. Plant Cell. 2010;22(10):3206-17. PubMed PMID: 20959562.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cytokinin regulates compound leaf development in tomato. AU - Shani,Eilon, AU - Ben-Gera,Hadas, AU - Shleizer-Burko,Sharona, AU - Burko,Yogev, AU - Weiss,David, AU - Ori,Naomi, Y1 - 2010/10/19/ PY - 2010/10/21/entrez PY - 2010/10/21/pubmed PY - 2011/4/16/medline SP - 3206 EP - 17 JF - The Plant cell JO - Plant Cell VL - 22 IS - 10 N2 - 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. SN - 1532-298X UR - https://www.unboundmedicine.com/medline/citation/20959562/Cytokinin_regulates_compound_leaf_development_in_tomato_ L2 - https://academic.oup.com/plcell/article-lookup/doi/10.1105/tpc.110.078253 DB - PRIME DP - Unbound Medicine ER -