Root Hairs (eBook, PDF)

Cell and Molecular Biology
Redaktion: Ridge, R. W.; Emons, A. M. C.

• Format: PDF

Produktbeschreibung

Root hairs are tip-growing cells that originate from epidennal cells called trichoblasts. Their role may be simply thought of as extending the surface area of the root to facilitate absorption of nutrients and water. However, as you will see in this book, the root hair is far more than that. To an increasingly larger number of plant biologists, the root hair is a model cell. It grows in much the same way as a pollen tube, by sending vast numbers of vesicles containing cell wall precursors to a rounded apical dome, the tip. Once the trichoblast becomes committed to root hair fonnation, it no longer divides. The root hair cell has a migrating nucleus and a complex cytoskeleton. It has a varied cell wall. It is easy to observe through differential interference contrast microscopy because there are no other cells around it to disturb the image. Cytoplasmic streaming is exceptionally clear, and amyloplasts and even mitochondria and endoplasmic reticulum can be seen without reporter labelling in some species. Root hair mutants are easy to distinguish and catalogue. Plant honnones are involved in their growth and development. It is thus an almost ideal plant cell for experimental manipulation and observation. The root hair is also involved in interactions with soil microbes, as you will learn from later chapters of the book.

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Produktdetails

• Verlag: Springer Japan
• Seitenzahl: 336
• Erscheinungstermin: 6. Dezember 2012
• Englisch
• ISBN-13: 9784431683704
• Artikelnr.: 44058997

Inhaltsangabe

1 Root Hair Ultrastructure and Tip Growth.- 2 The Role of Microtubules in Root Hair Growth and Cellulose Microfibril Deposition.- 3 The Root Hair Actin Cytoskeleton as Backbone, Highway, Morphogenetic Instrument and Target for Signalling.- 4 Cell Cleaving: A Method for Studying the Extracellular Matrix-Cytoskeleton-Plasma Membrane Continuum in Root Hairs.- 5 Advanced Fluorescence Microspectroscopic Methods for the Study of Single Living Root Hairs.- 6 Molecules at the Tips of Root Hairs.- 7 Hormonal Control of Root Hair Growth and Development.- 8 Electrobiology of Root Hairs.- 9 Calcium in Root Hair Growth.- 10 pH Regulation in and by Root Hairs.- 11 Evidence for the Uptake of Non-Essential Ions and Essential Nutrient Ions by Root Hairs and Their Effect on Root Hair Development.- 12 Specification of Root Hair Cells.- 13 Genetics of Root Hair Development.- 14 Infection of Root Hairs by Rhizobia: Infection Thread Development with Emphasis on the Microtubular Cytoskeleton.- 15 Nod-Factors in Symbiotic Development of Root Hairs.- 16 Rhizobium-Induced Plant Gene Expression in Root Hairs.- 17 The Involvement of Root Hairs in Mycorrhizal Associations.- 18 Root Hair-Frankia Interactions in Actinorhizal Symbioses.