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Related Concept Videos

Meristems and Plant Growth02:36

Meristems and Plant Growth

Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.
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Seed Structure and Early Development of the Sporophyte

Seed structures are composed of a protective seed coat surrounding a plant embryo, and a food store for the developing embryo. The embryo contains the precursor tissues for leaves, stem, and roots. The endosperm and cotyledons—seed leaves—act as the food reserves for the growing embryo.
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Morphogenesis

Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
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Light Acquisition

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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The Angiosperm Life Cycle

Plants have a life cycle split between two multicellular stages: a haploid stage—with cells containing one set of chromosomes—and a diploid stage—with cells containing two sets of chromosomes. The haploid stage is the gamete-producing gametophyte, and the diploid stage is the spore-producing sporophyte.

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Improved Methods for Preparing Transverse Sections and Unrolled Whole Mounts of Maize Leaf Primordia for Fluorescence and Confocal Imaging
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Leaf development.

Hirokazu Tsukaya1

  • 1National Institute for Basic Biology/Center for Integrated Bioscience, Okazaki National Institutes, Myodaiji-cho, Okazaki 444-8585, Japan; Additional affiliations: 'Form and Function', PRESTO, Japan Science and Technology Corporation, Japan; School of Advanced Sciences, The Graduate University for Advanced Studies, Shonan Villege, Hayama, Kanagawa 240-0193, Japan; fax: +81-564-55-7512; tsukaya@nibb.ac.jp.

The Arabidopsis Book
|February 4, 2012
PubMed
Summary
This summary is machine-generated.

Understanding leaf development is crucial for comprehending seed plant growth. Genetic studies in Arabidopsis thaliana reveal key mechanisms controlling leaf development, despite complex cellular processes.

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Area of Science:

  • Plant developmental biology
  • Molecular genetics
  • Angiosperm development

Background:

  • The shoot system, comprising leaves, stems, and buds, is fundamental to seed plant development.
  • Floral organs in angiosperms are modified leaves, highlighting the significance of leaf development studies.
  • Leaf development is complex, involving simultaneous cell division and elongation, particularly in dicotyledonous plants like Arabidopsis thaliana.

Purpose of the Study:

  • To review current knowledge on the mechanisms controlling leaf development in Arabidopsis thaliana.
  • To synthesize findings from developmental and molecular genetic studies on leaf development.
  • To emphasize the importance of leaf development for understanding overall plant growth and function.

Main Methods:

  • Genetic approaches in Arabidopsis thaliana as a model organism.
  • Analysis of developmental and molecular genetic studies.
  • Review of existing literature on leaf development mechanisms.

Main Results:

  • Genetic studies in Arabidopsis have elucidated various mechanisms governing leaf development.
  • The complexity of cell division and elongation in leaf primordia presents challenges to classical anatomical studies.
  • Vascular patterning is identified as a significant factor influencing leaf shape.

Conclusions:

  • Understanding leaf development is essential for a comprehensive understanding of seed plants.
  • Genetic research in Arabidopsis provides powerful insights into plant development.
  • Further research is needed to fully elucidate the intricate processes of leaf development.