Plant tissue culture is a collection of techniques used to maintain or grow plant cells, tissues or organs under sterile conditions on a nutrient culture medium of known composition. Different techniques in plant tissue culture may offer certain advantages over traditional methods of propagation.
This practical manual has been prepared in response to the necessities of the graduate students as an introduction to the in vitro tissue culture techniques and some molecular aspects.
Table of Contents
1 Sterilization techniques
2 Preparation of stock solutions
3 Preparation of media ms medium
4 Surface sterilization of explants
5 Preparation of explant for callus induction
6 Characterization of callus
7 Sub culturing of the callus on differentiation media
8 Establishment of suspension culture from grown callus
9 Extraction of secondary metabolites from callus
10 Micro-propagation of plant By shoot tip & nodal culture method
11 Anther culture for haploid production
12 Protoplast isolation
13 Preparation of synthetic seeds
14 Hairy root induction through Agrobacterium mediated gene transfer
15 Rapid extraction of plant DNA
16 Development of RAPD map
Objectives and Topics
This practical manual aims to provide comprehensive laboratory protocols for fundamental and advanced techniques in plant tissue culture, enabling students and researchers to perform standardized procedures for plant propagation, genetic analysis, and metabolite extraction.
- Principles and methods of laboratory sterilization.
- Procedures for callus induction, sub-culturing, and suspension culture.
- Techniques for micro-propagation and haploid production.
- Genetic manipulation through Agrobacterium-mediated transformation.
- Molecular biology methods including DNA extraction and RAPD mapping.
Extract from the Book
STERILIZATION TECHNIQUES
Sterilization techniques are designed to kill or remove a wide range of micro-organism including protozoa, fungi, bacteria, viruses. Autoclaving, dry heat sterilization and filtration are adequate for most cell and organ culture materials.
[A] AUTOCLAVING
The laboratory apparatus designed to use steam under regulated pressure to achieve sterilization is called autoclave.
Principle: Water boils at 100°C depending on the vapor pressure of the atmosphere. If the atmospheric pressure is raised the boiling temperature for water will also rise. So if the steam pressure inside a close vessel is increased to 15 lb/inch2. The temperature can go up to 121.6°C. An autoclave is equipped with device that can maintain saturated steam at a designated temperature and pressure for any period of time.
Chapter Summary
Sterilization techniques: This chapter outlines essential laboratory safety and decontamination methods, including autoclaving, hot air oven use, and filter sterilization.
Preparation of stock solutions: Describes the systematic approach to preparing concentrated chemical stocks to facilitate accurate media preparation for tissue culture.
Preparation of media ms medium: Details the precise formulation and chemical requirements for Murashige and Skoog (MS) medium to support plant growth.
Surface sterilization of explants: Focuses on chemical methods to eliminate surface contaminants from plant tissues before inoculation.
Preparation of explant for callus induction: Explains the selection and preparation of plant tissues to initiate undifferentiated cell growth.
Characterization of callus: Discusses the morphological, textural, and physiological parameters used to evaluate callus quality.
Sub culturing of the callus on differentiation media: Covers the transition from undifferentiated callus to organized plantlet regeneration through hormonal control.
Establishment of suspension culture from grown callus: Explains techniques for maintaining dispersed cell cultures in liquid media for biochemical studies.
Extraction of secondary metabolites from callus: Provides procedures for isolating commercially valuable chemical compounds from cultured plant cells.
Micro-propagation of plant By shoot tip & nodal culture method: Outlines the protocol for clonal propagation using specific explant types to ensure uniformity.
Anther culture for haploid production: Details the method for producing haploid plants through the manipulation of microspores.
Protoplast isolation: Describes the enzymatic removal of cell walls to create protoplasts for genetic and fusion studies.
Preparation of synthetic seeds: Explains the encapsulation of somatic embryos in a protective gel to create artificial seeds.
Hairy root induction through Agrobacterium mediated gene transfer: Covers genetic transformation techniques for inducing root development.
Rapid extraction of plant DNA: Provides a streamlined protocol for isolating genomic DNA from plant material.
Development of RAPD map: Describes the application of PCR-based markers to assess genetic variation and polymorphism.
Keywords
Plant Tissue Culture, Sterilization, Callus Induction, Micro-propagation, Agrobacterium, Synthetic Seeds, Protoplast Isolation, RAPD, DNA Extraction, Secondary Metabolites, MS Medium, Anther Culture, Genetic Transformation, Suspension Culture, Morphogenesis.
Frequently Asked Questions
What is the primary focus of this manual?
The manual provides practical protocols for plant tissue culture, covering everything from basic sterilization to advanced molecular techniques like RAPD mapping.
Which key research areas are covered?
The manual covers plant propagation, genetic transformation, metabolite extraction, and various histological/molecular analysis techniques.
What is the main objective of the described experiments?
The objective is to equip students with the skills required to successfully perform in vitro plant culture and genetic analysis within a biotechnology laboratory.
Which scientific methods are primarily utilized?
The manual employs techniques such as aseptic handling, enzymatic digestion, PCR-based genetic screening, and colorimetric chemical estimation.
How is the main content structured?
The book is organized into distinct experimental chapters, each containing an introduction, principles, requirements, procedures, and discussion sections.
What defines the characteristics of this laboratory manual?
It is characterized by step-by-step procedures, clear identification of chemical and instrumental requirements, and foundational knowledge of plant biotechnology.
Why is sterilization considered the first critical step?
Sterilization is essential because contaminants like bacteria and fungi outgrow plant cultures, making the maintenance of a strictly aseptic environment the foundational condition for success.
What is the difference between direct and indirect androgenesis?
In direct androgenesis, microspores develop directly into embryoids, whereas in indirect androgenesis, the cells first form a callus before differentiating into plantlets.
What role do growth regulators play in callus induction?
Growth regulators like auxins and cytokinins are precisely varied to induce dedifferentiation in explants, allowing them to form a callus or differentiate into shoots and roots.
- Arbeit zitieren
- Hirenkumar Sherathiya (Autor:in), 2012, Practical manual for Plant Tissue Culture, München, GRIN Verlag, https://www.hausarbeiten.de/document/265322
