Related Experiment Video
Updated: Feb 9, 2026
12:05
A Workflow for the Quantitative Assessment of the Endophytic and Epiphytic Bacterial Microbiomes of the Bark of Populus trichocarpa
Published on: June 27, 2025
1.2K
Additional AM Fungi Inoculation Increase Populus cathayana Intersexual Competition.
Qiuping Wu1, Yun Tang1, Tingfa Dong1,2
1Key Laboratory of Southwest China Wildlife Resources Conservation, China West Normal University, Nanchong, China.
Frontiers in Plant Science
|June 6, 2018
Summary
Arbuscular mycorrhizal (AM) fungi inoculation amplified sex-specific competition in Populus cathayana. Females benefited more from this symbiosis, showing enhanced growth and nutrient uptake compared to males.
Area of Science:
- Plant Biology
- Mycology
- Ecology
Background:
- Sex-specific responses to arbuscular mycorrhizal (AM) fungi are known in dioecious plants.
- The impact of AM fungi on intersexual competition remains understudied.
Purpose of the Study:
- To investigate how additional AM fungi supply influences intersexual competition in *Populus cathayana*.
- To determine if AM fungi alter sex-specific competitive abilities.
Main Methods:
- *Populus cathayana* saplings were subjected to two treatments: inoculation with *Funneliformis mosseae* and a control (non-inoculated).
- Saplings were grown with the opposite sex for 3 months to simulate intersexual competition.
- Measurements included root structure, nutrient content, morphology, and biomass accumulation.
Main Results:
- AM fungi inoculation induced significant sexual differences in root structure and nutrient uptake (N, K, Mg).
- Inoculated plants showed enlarged sexual differences in morphology and biomass accumulation (height, leaf area, dry mass).
- Inoculated females exhibited higher values in most measured traits than males.
Conclusions:
- Additional AM fungi supply intensifies intersexual competition in *Populus cathayana*.
- Females gain greater symbiosis-mediated benefits from AM fungi than males under competition.
- AM fungi play a crucial role in modulating sex-specific plant interactions.
Related Concept Videos
02:34Competition
24.9K
When organisms require the same limited resources within an environment, they may have to compete for them. Competition is a net-negative interaction. Even if two competing individuals or populations do not interact directly, the overall fitness of both competitors is lowered as a result of not having full access to the limited resource.
24.9K
02:11The Roles of Bacteria and Fungi in Plant Nutrition
47.4K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
47.4K
01:27Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)
4.4K
α,β-Unsaturated carbonyl compounds with two electrophilic sites, the carbonyl carbon, and the β carbon, are susceptible to nucleophilic attack via two modes: conjugate or 1,4-addition and direct or 1,2-addition.
Conjugate addition results in a thermodynamically stable product. The reaction retains the stronger C=O bond at the expense of the weaker C=C π bond. The process is slow as the β carbon is less electrophilic than the carbonyl carbon.
Direct addition products are...
Conjugate addition results in a thermodynamically stable product. The reaction retains the stronger C=O bond at the expense of the weaker C=C π bond. The process is slow as the β carbon is less electrophilic than the carbonyl carbon.
Direct addition products are...
4.4K
01:29Overview of Fungi
1.9K
Fungi are a diverse group of eukaryotes more closely related to animals than other eukaryotes. Fungal cell walls comprise chitin, a polysaccharide that provides structural strength, and glucans, which contribute to flexibility and integrity. Other polysaccharides, such as mannans and galactosans, may supplement or replace chitin in some fungi. These adaptations, along with their preference for acidic environments and tolerance for high osmotic pressure, enable fungi to thrive in various...
1.9K
01:18Increasing Function
400
An increasing function exhibits a rise in output values as input values increase. This behavior is depicted graphically as a curve or line that slopes upward from left to right. Such a function satisfies the condition that if x1 < x2, then f(x1) < f(x2), indicating that the function values grow with increasing inputs. This concept is fundamental in understanding growth trends across various domains, such as population dynamics, financial investments, or resource consumption.The...
400
01:08Conjugate Addition of Enolates: Michael Addition
3.6K
The attack of a nucleophile at the β carbon of an α,β-unsaturated carbonyl compound is called conjugate addition. Conjugate addition reactions of active methylene compounds, such as β-diketones, β-keto esters, β-keto nitriles, and α-nitro ketones, are called Michael addition reactions.
3.6K