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KANADI regulates organ polarity in Arabidopsis

Author

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  • Randall A. Kerstetter

    (University of Pennsylvania, Plant Science Institute)

  • Krista Bollman

    (University of Pennsylvania, Plant Science Institute)

  • R. Alexandra Taylor

    (University of Pennsylvania, Plant Science Institute)

  • Kirsten Bomblies

    (University of Pennsylvania, Plant Science Institute)

  • R. Scott Poethig

    (University of Pennsylvania, Plant Science Institute)

Abstract

Leaves and floral organs are polarized along their adaxial–abaxial (dorsal–ventral) axis. In Arabidopsis, this difference is particularly obvious in the first two rosette leaves, which possess trichomes (leaf hairs) on their adaxial surface but not their abaxial surface1,2,3. Mutant alleles of KANADI (KAN) were identified in a screen for mutants that produce abaxial trichomes on these first two leaves. kan mutations were originally identified as enhancers of the mutant floral phenotype of crabs claw (crc), a gene that specifies abaxial identity in carpels4,5. Here we show that KAN is required for abaxial identity in both leaves and carpels, and encodes a nuclear-localized protein in the GARP family of putative transcription factors. The expression pattern of KAN messenger RNA and the effect of ectopically expressing KAN under the regulation of the cauliflower mosaic virus (CAMV) 35S promoter indicate that KAN may also specify peripheral identity in the developing embryo.

Suggested Citation

  • Randall A. Kerstetter & Krista Bollman & R. Alexandra Taylor & Kirsten Bomblies & R. Scott Poethig, 2001. "KANADI regulates organ polarity in Arabidopsis," Nature, Nature, vol. 411(6838), pages 706-709, June.
    • Handle: RePEc:nat:nature:v:411:y:2001:i:6838:d:10.1038_35079629
    DOI: 10.1038/35079629
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    Cited by:

    1. Sheng Yang & Weiwei Cai & Ruijie Wu & Yu Huang & Qiaoling Lu & Hui Wang & Xueying Huang & Yapeng Zhang & Qing Wu & Xingge Cheng & Meiyun Wan & Jingang Lv & Qian Liu & Xiang Zheng & Shaoliang Mou & Dey, 2023. "Differential CaKAN3-CaHSF8 associations underlie distinct immune and heat responses under high temperature and high humidity conditions," Nature Communications, Nature, vol. 14(1), pages 1-17, December.

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