Arabidopsis: Insights into Gene Function

Flashcards covering key concepts and vocabulary related to gene function in Arabidopsis, as presented in the lecture.

Arabidopsis thaliana

The best plant for molecular genetic research, small and easy to grow.

Wild-type gene

The normal version of a gene that leads to the conventional phenotype.

Mutant gene

A gene that has undergone mutation and results in an altered phenotype.

Phenotype

The observable traits or characteristics of an organism.

Forward genetic approach

A method to identify and analyze the function of genes by studying mutant organisms.

Diploid

Having two complete sets of chromosomes, one from each parent.

Heterozygous

Having two different alleles for a particular gene.

Genome sequence

The complete DNA sequence of an organism's genetic material.

Transcription factor

A protein that binds to specific DNA sequences to regulate gene expression.

Seed mutagenesis

A process of using chemicals or radiation to induce mutations in seeds.

ABC model of flower morphogenesis

A model that explains the role of specific genes in determining flower structure.

Agrobacterium

A genus of bacteria used in plant genetic engineering for transformation.

Glabra1 mutant

A mutant in Arabidopsis used to identify the GL1 gene, which encodes a transcription factor.

Floral dip

A method for transforming Arabidopsis using Agrobacterium during flowering.

Protein-encoding genes

Genes that contain the information necessary to produce proteins.

Mutants

Organisms that have undergone a mutation leading to a change in phenotype.

Self-fertilisation

The process of fertilization in which an organism fertilizes itself.

Functional genomics

A field of study that aims to understand the function of genes and their products.

Cell commitment

The process by which cells become committed to a specific differentiation pathway.

Epidermis trichome

Hair-like structures on the surface of the plant, involved in various functions.

Gene isolation

The process of separating a specific gene from the rest of the genome for study.

Why are plants considered excellent experimental systems?

Plants are excellent experimental systems because they have a relatively simple genome, are easy to grow, and can produce a large number of progeny.

What are some methods for introducing foreign genes into plants?

Methods to introduce foreign genes into plants include Agrobacterium-mediated transformation, biolistics (gene gun), and electroporation.

Why is gene expression important for plant growth and development?

Gene expression is critical for plant growth and development as it regulates key processes such as cell division, differentiation, and responses to environmental signals.

What is the significance of Arabidopsis in genetic research?

Arabidopsis is significant in genetic research due to its small genome, short life cycle, and extensive resources available for studying gene function.

How does light affect plant development through photoreceptors?

Light, detected by specific photoreceptors, regulates various aspects of plant development including seed germination, flowering time, and stem elongation.