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The formation and patterning of leaves: recent advances

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Abstract

Leaves, the plant’s major photosynthetic organs, form through the activity of groups of pluripotent cells, termed shoot apical meristems (SAMs), located at the growing tips of plants. Leaves develop with a dorso–ventral asymmetry, with the adaxial surface adjacent to the meristem and the abaxial surface developing at a distance from it. Molecular genetic studies have shown that the correct specification of adaxial/abaxial polarity requires communication between the incipient leaf and the meristem, and that the juxtaposition of adaxial/abaxial fates is necessary for lamina outgrowth (Waites and Hudson 1995; McConnell et al. 2001). Over the last few years, a number of factors that control cell fate specification in the apex have been identified. This review will focus on recent advances on distinct but overlapping aspects of leaf development, namely, the transition from meristem to leaf fate and the specification of abaxial/adaxial polarity and its possible role in leaf growth.

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Abbreviations

DL :

DROOPING LEAF

GRAM :

GRAMINIFOLIA

GRO:

GROUCHO

HD-ZIPIII:

Homeodomain-Leucine Zipper III

KNOX :

class I KNOTTED homeobox gene

Lbl1 :

Leafbladeless1

LUG :

LEUGNIG

miRNA:

microRNA

NS :

NARROW SHEATH

PHAN :

PHANTASTICA

PHB :

PHABULOSA

PROL :

PROLONGATA

PRS :

PRESSED FLOWER

Rld1 :

Rolled leaf1

SAM:

Shoot apical meristem

TUP1:

Glucose repression regulatory protein

STY :

STYLOSA

WUS :

WUSCHEL

KAN :

KANADI

YAB :

YABBY

ZYB :

Zea mays YABBY

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Authors and Affiliations

  1. Department of Plant Sciences, University of Oxford, Oxford, OX1 3RB, UK

    Claudia Canales, Stephen Grigg & Miltos Tsiantis

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  1. Claudia Canales
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  2. Stephen Grigg
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  3. Miltos Tsiantis
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Correspondence to Miltos Tsiantis.

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Canales, C., Grigg, S. & Tsiantis, M. The formation and patterning of leaves: recent advances. Planta 221, 752–756 (2005). https://doi.org/10.1007/s00425-005-1549-x

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