Genetic framework for flattened leaf blade formation in unifacial leaves of Juncus prismatocarpus.

The Plant Cell
Takahiro YamaguchiHirokazu Tsukaya

Abstract

Angiosperm leaves generally develop as bifacial structures with distinct adaxial and abaxial identities. However, several monocot species, such as iris and leek, develop unifacial leaves, in which leaf blades have only abaxial identity. In bifacial leaves, adaxial-abaxial polarity is required for leaf blade flattening, whereas many unifacial leaves become flattened despite their leaf blades being abaxialized. Here, we investigate the mechanisms underlying the development and evolution of flattened leaf blades in unifacial leaves. We demonstrate that the unifacial leaf blade is abaxialized at the gene expression level and that an ortholog of the DROOPING LEAF (DL) gene may promote flattening of the unifacial leaf blade. In two closely related Juncus species, Juncus prismatocarpus, which has flattened unifacial leaves, and Juncus wallichianus, which has cylindrical unifacial leaves, DL expression levels and patterns correlate with the degree of laminar outgrowth. Genetic and expression studies using interspecific hybrids of the two species reveal that the DL locus from J. prismatocarpus flattens the unifacial leaf blade and expresses higher amounts of DL transcript than does that from J. wallichianus. We also show that leaf blade...Continue Reading

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Citations

May 24, 2012·Plant & Cell Physiology·Takahiro YamaguchiHirokazu Tsukaya
Mar 15, 2012·The Plant Cell·Hokuto NakayamaHirokazu Tsukaya
Jul 19, 2013·The Arabidopsis Book·Hirokazu Tsukaya
Sep 6, 2013·Molekuliarnaia genetika, mikrobiologiia i virusologiia·L V OzerovaS Y Morozov
Dec 10, 2015·Frontiers in Plant Science·Yasunori Ichihashi, Hirokazu Tsukaya
Jul 24, 2012·The Plant Journal : for Cell and Molecular Biology·Nikolaos VosnakisSinéad Drea
Nov 28, 2013·Genesis : the Journal of Genetics and Development·Kenji Fukushima, Mitsuyasu Hasebe
Feb 11, 2014·Current Opinion in Plant Biology·Hirokazu Tsukaya
May 25, 2015·Trends in Genetics : TIG·Aaron Sluis, Sarah Hake
Jun 12, 2016·Journal of Theoretical Biology·Yoshinori HayakawaAtsushi Mochizuki
Jun 28, 2016·Current Opinion in Genetics & Development·Cristina L Walcher-Chevillet, Elena M Kramer
Jan 1, 2013·Plants·Miyuki Nakata, Kiyotaka Okada
Aug 15, 2018·The New Phytologist·Phillip A ConklinMichael J Scanlon
Jul 1, 2011·Functional Plant Biology : FPB·Adrienne B NicotraHirokazu Tsukaya
Jul 12, 2018·Development·Aude Maugarny-Calès, Patrick Laufs
Dec 18, 2018·The New Phytologist·Xiaofeng Yin, Hirokazu Tsukaya
Dec 2, 2020·Trends in Plant Science·Yuling JiaoJan Traas
Nov 17, 2020·Frontiers in Plant Science·Darren Manuela, Mingli Xu
Feb 23, 2021·Journal of Integrative Plant Biology·Hongfeng WangChuanen Zhou
Feb 24, 2021·Plant Physiology·Akira NukazukaHirokazu Tsukaya

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