Biotechnology of floral development

Type :

Presentation

Pages :

8 pages

Format :

.doc

Published date :

11/14/2008

Category :

Science & technology

Sub category :

Biology

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Summary :

Introduction.
Methods for gene discovery and manipulation.
1. Modern agro-biotechnology techniques.
2. Reverse genetic system.
Gene silencing.
1. A more favored manipulation method.
Misexpression-overexpression.
1. Ectopically express a particular gene or unlink the expression of a gene from its normal regulatory control pathway.
2. A constitutive high level of expression of transgenes.
Gene targets for biotechnology in flowering.
Floral development and biotechnology in woody perennial species.

Abstract

The understanding of floral development at a molecular level has proceeded at an unprecedented rate. Molecular genetic studies on two model plants, Antirrhinum and Arabidopsis in particular, have provided the foundation for this progress through the initial identification of genes involved in flowering. Recent efforts at elucidating the regulatory networks controlling the transition to flowering in the model plant Arabidopsis have identified over 80 independent loci, which have important roles in the control of flowering in this species. An even larger number of genes have been discovered controlling events downstream of floral initiation. This extensive compliment of genes also forms very complicated regulatory networks that integrate environmental and developmental mechanisms to coordinate the reproductive process. There have been many excellent review articles published recently, including those found in this volume, that provide an in-depth study of those genes involved in floral timing and floral organogenesis. The reader is encouraged to seek these out in order to appreciate the complexity inherent in the control of this vitally important developmental process.