Lichen Symbiosis
Lichen Symbiosis - Related Videos
00:58
Symbiosis
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2026
Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
11:28
Layers of Symbiosis - Visualizing the Termite Hindgut Microbial Community
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Cited by 1 •
2007
Jared Leadbetter takes us for a nature walk through the diversity of life resident in the termite hindgut - a microenvironment containing 250 different species found nowhere else on Earth. Jared reveals that the symbiosis exhibited by this system is multi-layered and involves not only a relationship between the termite and its gut inhabitants, but also involves a complex web of symbiosis among the gut microbes themselves.
07:43
Production of Arbuscular Mycorrhizal (AM) Fungal Inoculum and Phenotypic Evaluation of Rice and AM Symbiosis Under Saline Conditions
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2025
This article describes a protocol for generating arbuscular mycorrhizal (AM) fungi inoculum to investigate AM-enhanced salt stress tolerance in rice.
03:55
Urethroplasty with Pedicled Tunica Vaginalis for the Treatment of Long-segment Anterior Urethral Stricture Caused by Lichen Sclerosus of Glans Penis
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Cited by 1 •
2024
This article introduces a surgical method using a pedicled tunica vaginalis to treat long-segment urethral stricture resulting from lichen sclerosus. The tunica vaginalis is an excellent substitute for the urethra, leading to quick postoperative recovery for patients.
07:13
CRISPR-Cas9-based Mutagenesis in the Entomopathogenic Nematode Steinernema hermaphroditum and the Maintenance of Mutant Lines
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2025
This article demonstrates CRISPR-Cas9-mediated genome engineering in Steinernema hermaphroditum, an entomopathogenic (EPN: insect-parasitic) nematode and an emerging genetic model. The described technology is useful for creating mutants, allowing for the elucidation of gene functions in nematode biology that are relevant to mutualistic and parasitic symbiosis.
FAQs
The partnership coordinates access to several limiting resources rather than relying on a single exchange. The fungal network supplies physical support and helps obtain water and minerals, while the photosynthetic partner supplies organic carbon made during photosynthesis. This division of functions helps maintain the lichen as a stable biological system on surfaces where resources are scarce.
When the photosynthetic partner is a cyanobacterium, the association may gain access to fixed nitrogen as well as photosynthetic carbon. Nitrogen fixation can therefore add a nutrient-related benefit that is not supplied by every photosynthetic partner. This distinction makes the identity of the partner biologically important when researchers examine lichen nutrition and ecological performance.
Several complementary functions contribute to persistence under exposed conditions. The fungal network offers structure and protection, while its access to water and minerals supports the photosynthetic partner. Together, these features help lichens occupy bare rock and nutrient-poor surfaces. The association therefore illustrates how cooperation can expand the environments available to organisms that function together.
Lichens provide a biological system for examining how different organisms share functions while facing environmental constraints. Researchers can relate the partners’ resource contributions to the ability of the association to persist in exposed or nutrient-poor settings. This makes lichen symbiosis relevant to broader questions about cooperation, stress tolerance, and the conditions that support stable biological partnerships.
In biodiversity research, lichens can be examined as associations involving different fungal and photosynthetic partners, including green algae and cyanobacteria. Their variety creates opportunities to investigate how partnership composition relates to ecological roles and habitat occupation. Such studies connect organismal diversity with cooperation, nutrient availability, and the development of biological communities on difficult surfaces.
Lichens are relevant to environmental monitoring because their occurrence and condition can be considered in studies of environmental settings. They also contribute to weathering and soil formation, linking the activity of the association to longer-term ecosystem development. Consequently, lichen research can connect observations of biological partnerships with changes in surfaces, habitats, and emerging ecosystems.