Dynamics of genets in cluonal plants
1Dept of Botany, Stockholm University, S-106 91 Stockholm, Sweden.
Trends in Ecology & Evolution
|January 18, 2011
Summary
Life cycles of clonal plants are complex. This review synthesizes recent research on seedling recruitment, genetic structure, and growth to understand their population dynamics and evolution.
Area of Science:
- Ecology
- Evolutionary Biology
- Plant Science
Background:
- Clonal plant life-cycle dynamics, including dispersal, recruitment, and survival of genetic individuals, are poorly understood.
- These long-lived plants present unique challenges for studying whole life-cycle processes.
- Inferences can be drawn from specific population aspects like seedling recruitment and genetic structure.
Purpose of the Study:
- To review recent findings on clonal plant population dynamics.
- To synthesize knowledge on seedling recruitment, genetic structure, and growth form variation.
- To draw conclusions regarding genet population structure, regulation, and life history evolution.
Main Methods:
- Review of recent studies on clonal plant populations.
- Analysis of data on seedling recruitment.
- Examination of genetic structure and growth form variation.
Main Results:
- Recent studies provide insights into previously enigmatic clonal plant processes.
- Seedling recruitment, genetic structure, and growth form variation are key indicators of population dynamics.
- Understanding these aspects aids in comprehending genet population regulation.
Conclusions:
- Life history evolution in clonal plants is influenced by population structure and regulation.
- Further research integrating various population aspects is crucial for a holistic understanding.
- This review consolidates current knowledge and highlights future research directions.
Related Concept Videos
02:39Gene Flow
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
02:38Asexual Reproduction
Asexual reproduction allows plants to reproduce without growing flowers, attracting pollinators, or dispersing seeds. Offspring are genetically identical to the parent and produced without the fusion of male and female gametes.
02:57Plant Tissue Culture
Plant tissue culture is widely used in both primary and applied science. Applications range from plant development studies to functional gene studies, crop improvement, commercial micropropagation, virus elimination, and conservation of rare species.
01:29Non-nuclear Inheritance
Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm—such as chloroplasts and mitochondria—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
02:13Overview of Transposition and Recombination
Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
01:09Mutation, Gene Flow, and Genetic Drift
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).Mechanisms of Genetic VariationThe original sources of genetic variation are mutations,...