Lichen symbiosis: Search and recognition of partners

Инсарова, И.Д.; Blagoveshchenskaya, E. Yu.

doi:10.1134/s1062359016040038

Cited by 15 publications

(11 citation statements)

References 55 publications

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“…For instance, T. jamesii -associating lichen-forming fungi might find it easier to retrieve the compatible partner from the photobiont pool and consequently their colonization in the disturbed region may not be limited by photobiont availability. This is particularly important for lichens, which have a phase in their reproductive cycle, during which fungi and algae disperse separately, e.g., in sexual reproduction after fungal spore release [31,68,69]. Thus, the processes of relichenization (fungal and algal partners joining to form a new lichen thallus) and recolonization of novel or disturbed habitats, might be comparatively easier for mycobionts associating with generalist algae.…”

Section: Discussionmentioning

confidence: 99%

A Glimpse into Genetic Diversity and Symbiont Interaction Patterns in Lichen Communities from Areas with Different Disturbance Histories in Białowieża Forest, Poland

et al. 2019

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Anthropogenic disturbances can have strong impacts on lichen communities, as well as on individual species of lichenized fungi. Traditionally, lichen monitoring studies are based on the presence and abundance of fungal morphospecies. However, the photobionts, as well photobiont mycobiont interactions also contribute to the structure, composition, and resilience of lichen communities. Here we assess the genetic diversity and interaction patterns of algal and fungal partners in lichen communities along an anthropogenic disturbance gradient in Białowieża Forest (Poland). We sampled a total of 224 lichen thalli in a protected, a managed, and a disturbed area of the forest, and sequenced internal transcribed spacer (ITS) ribosomal DNA (rDNA) of both, fungal and algal partners. Sequence clustering using a 97% similarity threshold resulted in 46 fungal and 23 green algal operational taxonomic units (OTUs). Most of the recovered photobiont OTUs (14 out of 23) had no similar hit in the NCBI-BLAST search, suggesting that even in well studied regions, such as central Europe, a lot of photobiont diversity is yet undiscovered. If a mycobiont was present at more than one site, it was typically associated with the same photobiont OTU(s). Generalist species, i.e., taxa that associate with multiple symbiont partners, occurred in all three disturbance regimes, suggesting that such taxa have few limitations in colonizing or persisting in disturbed areas. Trebouxia jamesii associated with 53% of the fungal OTUs, and was generally the most common photobiont OTU in all areas, implying that lichens that associate with this symbiont are not limited by the availability of compatible photobionts in Central European forests, regardless of land use intensity.

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Section: Discussionmentioning

confidence: 99%

A Glimpse into Genetic Diversity and Symbiont Interaction Patterns in Lichen Communities from Areas with Different Disturbance Histories in Białowieża Forest, Poland

et al. 2019

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“…Lichens are sophisticated plants, living in dependent relationships with fungi and algae, and the pertinent partners are made public as mycobiont and phycobiont, severally. The plant forms a plant structure or lichenized stroma which will contain characteristic secondary metabolites in all lichens [3]. They present on barks, stems, leaves and within the soil, however typically grow in habitats less favorable for higher plants [4].…”

Section: Introductionmentioning

confidence: 99%

Hematological, antioxidant and protective performance of Usnea longissima on chemical induced hepatotoxicity in experimental animals

Verma¹,

Paswan²,

Raj³

et al. 2017

JCLM

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“…On the other hand, interesting results presented by Díaz et al [41] suggest a cytoskeletal-driven mode of cyanobacteria chemotaxis similar to those of eukaryotic cells responding to a chemoattractant gradient. It has been concluded that Nostoc chemotaxis toward arginase requires actin and myosin II-like proteins.…”

Section: Discussionmentioning

confidence: 88%

“…Lectins found in both prokaryotic and eukaryotic cells play an important role in cell interaction processes. Synthesis of fungal lectins with arginase activity and the occurrence of an algal receptor showing urease activity are absolutely required in the formation of lichen associations [41]. Urease on the algae cell wall acts as a ligand for fungal arginase, fixing it on the cell wall and preventing it to penetrate the cell [20].…”

Section: Cytoskeleton Reorganization In Nostoc Cells In Response To Tmentioning

confidence: 99%

“…So, lectins with arginase activity participate as recognizing proteins of compatible alga binding to a specific receptor on the cell wall. However, they penetrate and cause destruction of algae cells if the specific receptor does not exist [41]. This is the case of noncompatible interaction, as it is shown in Figure 5.…”

Section: Cytoskeleton Reorganization In Nostoc Cells In Response To Tmentioning

confidence: 99%

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Role of the Cytoskeletal Actomyosin Complex in the Motility of Cyanobacteria and Fungal Spores

Sánchez-Elordi¹,

Díaz²,

Vicente³

et al. 2020

Parasitology and Microbiology Research

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This study demonstrates the involvement of the cytoskeleton in the movement of cyanobacteria and fungal spores to their hosts to establish a state of symbiosis or pathogenicity. The term symbiosis sensu lato is referred not only to commensalism and mutualism but also to the parasitic aberrations. The establishment of association implies that the endohabitant can move on a wet surface until finding an entry point in the exohabitant surface. In aqueous media, the exohabitant secretes glycoproteins that form a chemoattraction gradient for the invading cells. In lichens, the gradient consists of fungal lectins whose function is to recognize a compatible green alga or cyanobacterium. In the case of pathogens, the secreted proteins usually are a mixture that includes false quorum and chemoattractant signals, and cell wall digestive enzymes. The results indicate that fungal lectins and defense proteins bind to specific cell wall receptors for signaling the activation of cytoskeleton, causing successive cycles of cell contraction-relaxation that permits the migration of the endohabitant. In this study, different biochemical and microscopy techniques have been used. The mechanisms through which the cytoskeleton carries out these cycles of cell contractionrelaxation are described, being this a remarkable advance compared to previous results.

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Lichen symbiosis: Search and recognition of partners

Cited by 15 publications

References 55 publications

A Glimpse into Genetic Diversity and Symbiont Interaction Patterns in Lichen Communities from Areas with Different Disturbance Histories in Białowieża Forest, Poland

A Glimpse into Genetic Diversity and Symbiont Interaction Patterns in Lichen Communities from Areas with Different Disturbance Histories in Białowieża Forest, Poland

Hematological, antioxidant and protective performance of Usnea longissima on chemical induced hepatotoxicity in experimental animals

Role of the Cytoskeletal Actomyosin Complex in the Motility of Cyanobacteria and Fungal Spores

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