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Related Concept Videos

Pollination and Flower Structure02:40

Pollination and Flower Structure

Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.
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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Related Experiment Video

Updated: Jun 13, 2026

Forced Flowering in Mandarin Trees under Phytotron Conditions
08:42

Forced Flowering in Mandarin Trees under Phytotron Conditions

Published on: March 6, 2019

LEAFY blossoms.

Edwige Moyroud1, Elske Kusters, Marie Monniaux

  • 1Laboratoire de Physiologie Cellulaire Végétale, UMR5168, Centre National de la Recherche Scientifique, Commissariat à l'Energie Atomique, Institut National de la Recherche Agronomique, Université Joseph Fourier, 17 av. des Martyrs, bât. C2, 38054 Grenoble, France.

Trends in Plant Science
|April 24, 2010
PubMed
Summary
This summary is machine-generated.

The LEAFY (LFY) gene is crucial for flower development in flowering plants. Recent research suggests LFY homologs have ancient roles in plant growth and evolved to regulate reproductive genes in seed plants.

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Area of Science:

  • Plant developmental biology
  • Evolutionary genetics
  • Molecular biology

Background:

  • The LEAFY (LFY) gene and its homologs are plant-specific transcription factors.
  • These genes are vital for floral fate determination and flower patterning in angiosperms.
  • The function of LFY-like genes in non-flowering plants (gymnosperms, ferns, mosses) is largely unknown.

Purpose of the Study:

  • To review recent findings on LFY protein function.
  • To explore the evolutionary history of LFY homologs across land plants.
  • To propose a model for the evolution of LFY gene functions.

Main Methods:

  • Literature review of recent research on LFY genes.
  • Comparative analysis of LFY homologs across plant lineages.
  • Phylogenetic analysis to infer evolutionary relationships.

Main Results:

  • LFY protein functions in floral meristem identity and flower development.
  • LFY-like genes are present in diverse land plants, including non-flowering species.
  • Evidence suggests an ancestral role in regulating cell division and arrangement.

Conclusions:

  • LFY homologs possess conserved functions in basic plant growth regulation.
  • Novel functions in activating reproductive gene networks evolved in seed plants.
  • The LFY gene family has played a significant role since the origin of flowering plants.