Related Experiment Video
Updated: May 30, 2025

11:56
Non-radioactive in situ Hybridization Protocol Applicable for Norway Spruce and a Range of Plant Species
Published on: April 17, 2009
21.0K
Kin discrimination causes plastic responses in floral and clonal allocation
Isabeau Lewis1, Jannice Friedman1
1Department of Biology, Queen's University, Kingston, Ontario, Canada.
Proceedings. Biological Sciences
|January 29, 2025
Summary
Plants adjust their flowering and cloning based on neighbor identity. They reduce these traits when kin are near, but increase them when competing with unrelated, high-performing plants.
Area of Science:
- Plant ecology
- Behavioral ecology
- Evolutionary biology
Background:
- Plant interactions are influenced by their neighbors.
- Recognizing and responding to related individuals (kin) is advantageous for plants due to limited seed dispersal and clonal growth.
Purpose of the Study:
- To investigate if plants plastically adjust their floral and clonal allocation in response to neighbor identity.
- To test predictions of reduced floral display and clonality in the presence of kin.
Main Methods:
- Focal individuals of Mimulus guttatus were grown with neighbors of varying relatedness (non-kin, outcross siblings, self siblings).
- Vegetative, floral, and clonal traits were measured to assess plant responses.
Main Results:
- Focal plants reduced floral and clonal allocation when surrounded by kin.
- Plants increased floral and clonal allocation when neighbors were unrelated and high-performing.
Conclusions:
- Mimulus guttatus exhibits a clear and predictable response to kin, adjusting resource allocation accordingly.
- These findings have broad implications for understanding plant neighborhood structure and function.
Related Concept Videos
Frequency-dependent Selection
21.8K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
21.8K
Types of Selection
40.1K
Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
40.1K
Predator-Prey Interactions
16.1K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
16.1K
Chi-square Analysis
37.2K
The chi-square test is a statistical hypothesis test. It is used to check whether there is a significant difference between an expected value and an observed value. In the context of genetics, it enables us to either accept or reject a hypothesis, based on how much the observed values deviate from the expected values.
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
37.2K
Inclusive Fitness
35.9K
Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help.
35.9K
Position-effect Variegation
6.3K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
6.3K

