A lichen is an association between a biotrophic fungal partner and a green algal and (or) cyanobacterial partner, which may be considered a "controlled" parasitic interaction. While controlled parasitism implies benefit to both interacting partners, a parasitism that is not controlled implies that one partner benefits to the detriment of the other partner. The objective of this study was to compare morphological development of the interaction between Cladonia rangiferina with its compatible algal partner (Asterochloris glomerata/irregularis) and incompatible algae (Coccomyxa peltigerae and Chloroidium ellipsoideum) at 3 early resynthesis stages. The fungus was co-inoculated with each alga separately and the stages of development were compared using quantitative measures. The first 3 stages of development of the lichen thallus were identified in the compatible interaction as the "pre-contact" stage (1 day post co-inoculation (PCI)), "contact" stage (8 days PCI), and "growth together" stage (21 days PCI). Compatible interactions showed significantly shorter internode length, significantly more new lateral hyphal branches, significantly greater appressorial frequency, and no reduction in cell diameter of the algal cells, compared with incompatible interactions. At 21 days PCI, a parasitic interaction was observed between Cladonia rangiferina and Chloroidium ellipsoideum. These findings support the importance of recognition between compatible partners for successful lichenization. This study also revealed a strategy that may explain the success of this species in northern habitats. Identification of the resynthesis stages of Cladonia rangiferina is required before expression of the proteins involved in recognition and defense can be understood.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1139/cjm-2013-0313 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Differences in nitrogen uptake capacity between ammonium and nitrate with uptake kinetics.
Ying Yong Sheng Tai Xue Bao
July 2024
School of Earth System Science, Tianjin University, Tianjin 300072, China.
Article Synopsis
- Lichens can help scientists monitor pollution by using nitrogen from the atmosphere, but it's not clear how well they absorb ammonium and nitrate, which are forms of nitrogen.
- A research study tested how well lichens take in ammonium and nitrate under different conditions, finding that they prefer ammonium and absorb it more efficiently than nitrate.
- The study also showed that more ammonium in the water makes it harder for lichens to absorb nitrate, especially in the dark, which is important for understanding how to use lichens to check nitrogen pollution levels.
Distribution of metals and radionuclides in the lichens and from the past uranium mining region of Elliot Lake, Ontario, Canada.
Heliyon
December 2022
School of Natural Sciences, Laurentian University, 935 Ramsey Lake Rd. Sudbury, ON, P3E 2C6 Canada.
The present study was performed in the Elliot Lake area (Ontario, Canada), a site of uranium mining and milling for nearly 40 years between 1950's and 1990's. Although mining activities ceased in the mid-1990's, the site hosts several tailings management areas (TMAs) which are under ongoing rehabilitation and monitoring. Several surveys using lichens as a biomonitoring tool were completed in the 1980s and the 1990s to assess the levels of contaminants.
View Article and Find Full Text PDFUnraveling usnic acid: a comparison of biosynthetic gene clusters between two reindeer lichen (Cladonia rangiferina and C. uncialis).
Fungal Biol
January 2023
Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada. Electronic address:
Lichenized fungi are known for their production of a diversity of secondary metabolites, many of which have broad biological and pharmacological applications. By far the most well-studied of these metabolites is usnic acid. While this metabolite has been well-known and researched for decades, the gene cluster responsible for its production was only recently identified from the species Cladonia uncialis.
View Article and Find Full Text PDFNon-Toxic Increases in Nitrogen Availability Can Improve the Ability of the Soil Lichen to Cope with Environmental Changes.
J Fungi (Basel)
March 2022
Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Bloco C2, 1749-016 Lisbon, Portugal.
Climate change and atmospheric nitrogen (N) deposition on drylands are greatly threatening these especially vulnerable areas. Soil biocrust-forming lichens in drylands can provide early indicators of these disturbances and play a pivotal role, as they contribute to key ecosystem services. In this study, we explored the effects of different long-term water availability regimes simulating climate changes and their interaction with N addition on the physiological response of the soil lichen .
View Article and Find Full Text PDFFungal Planet description sheets: 1182-1283.
Persoonia
June 2021
Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands.
Novel species of fungi described in this study include those from various countries as follows: , from , from soil. , as endophyte from healthy leaves of , in fruit of , from stem of , on stems of , from rhizosphere soil of , on living leaves of , , and on living leaves of sp. , from soil.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!