scholarly journals Strain Identity of the Ectomycorrhizal Fungus Laccaria bicolor Is More Important than Richness in Regulating Plant and Fungal Performance under Nutrient Rich Conditions

2017 ◽  
Vol 8 ◽  
Author(s):  
Christina Hazard ◽  
Laura Kruitbos ◽  
Hazel Davidson ◽  
Fatou T. Mbow ◽  
Andy F. S. Taylor ◽  
...  
Keyword(s):  
Ectomycorrhizal Fungus ◽  
Laccaria Bicolor ◽  
Fungal Performance

Survival in the soil of the ectomycorrhizal fungus Laccaria bicolor and the effects of a mycorrhiza helper Pseudomonas fluorescens

2001 ◽  
Vol 33 (12-13) ◽  
pp. 1683-1694 ◽  
Author(s):  
C Brulé ◽  
P Frey-Klett ◽  
J.C Pierrat ◽  
S Courrier ◽  
F Gérard ◽  
...  
Keyword(s):  
Pseudomonas Fluorescens ◽  
Ectomycorrhizal Fungus ◽  
Laccaria Bicolor

Cloning and characterization of a symbiosis-related gene from an ectomycorrhizal fungus Laccaria bicolor

Gene ◽  
1998 ◽  
Vol 222 (2) ◽  
pp. 203-212 ◽  
Author(s):  
Sung-Jae Kim ◽  
Jun Zheng ◽  
Shivanand T Hiremath ◽  
Gopi K Podila
Keyword(s):  
Ectomycorrhizal Fungus ◽  
Laccaria Bicolor ◽  
Related Gene

scholarly journals Characterization of Transposable Elements in the Ectomycorrhizal Fungus Laccaria bicolor

PLoS ONE ◽  
2012 ◽  
Vol 7 (8) ◽  
pp. e40197 ◽  
Author(s):  
Jessy Labbé ◽  
Claude Murat ◽  
Emmanuelle Morin ◽  
Gerald A. Tuskan ◽  
François Le Tacon ◽  
...  
Keyword(s):  
Transposable Elements ◽  
Ectomycorrhizal Fungus ◽  
Laccaria Bicolor

Symbiosis-regulated expression of an acetyl-CoA acetyltransferase gene in the ectomycorrhizal fungus Laccaria bicolor

2006 ◽  
Vol 84 (9) ◽  
pp. 1405-1416 ◽  
Author(s):  
Shiv T. Hiremath ◽  
Sujata Balasubramanian ◽  
Jun Zheng ◽  
Gopi K. Podila
Keyword(s):  
Structural Changes ◽  
Plant Root ◽  
Ectomycorrhizal Fungus ◽  
Malate Synthase ◽  
Laccaria Bicolor ◽  
Symbiotic Association ◽  
Acetyl Coa ◽  
Ectomycorrhizal Symbiosis ◽  
Coordinated Expression ◽  
Lipid Metabolism Genes

The ectomycorrhiza is a symbiotic organ generated from the intricate association of fungal hyphae and plant root. The establishment of the ectomycorrhiza is a coordinated process of cross-talk between plant and fungus, followed by metabolic, developmental, and structural changes in the fungus, resulting in its growth toward the root. The initial stages of the symbiotic association are significant, since the direction of the association is determined by the gene expression level shifts that occur at this time. We have isolated a Laccaria bicolor (Maire) Orton cDNA clone corresponding to acetyl-CoA acetyltransferase (Lb-AAT), which is expressed during interaction with red pine roots and is symbiosis regulated. Acetyl-CoA acetyltransferase (EC 2.3.1.9) is an enzyme of the β-oxidation pathway that degrades long-chain fatty acids to acetyl-CoA. Expression of Lb-AAT is regulated by plant presence, by glucose, and by the presence of acetate or oleate in the medium. It is proposed that the role of Lb-AAT in the symbiosis is generation of two carbon compounds from stored lipids and generation of acetoacetyl-CoA in early interaction facilitating net growth from existing cell material. These results coupled with recent microarray analysis that revealed coordinated expression of malate synthase and other lipid metabolism genes along with Lb-AAT, suggest that this role for Lb-AAT could be an important part of preinfection process in ectomycorrhizal symbiosis and in the transfer and utilization of the carbon in the fungus.

scholarly journals A Transcriptomic Atlas of the Ectomycorrhizal Fungus Laccaria bicolor

2021 ◽  
Vol 9 (12) ◽  
pp. 2612
Author(s):  
Joske Ruytinx ◽  
Shingo Miyauchi ◽  
Sebastian Hartmann-Wittulsky ◽  
Maíra de Freitas Pereira ◽  
Frédéric Guinet ◽  
...  
Keyword(s):  
Developmental Stages ◽  
Morphological Differentiation ◽  
Functional Differentiation ◽  
Ectomycorrhizal Fungus ◽  
Fine Tuning ◽  
Laccaria Bicolor ◽  
Transcriptional Responses ◽  
Wide Range ◽  
Transcriptional Changes ◽  
Ecm Fungi

Trees are able to colonize, establish and survive in a wide range of soils through associations with ectomycorrhizal (EcM) fungi. Proper functioning of EcM fungi implies the differentiation of structures within the fungal colony. A symbiotic structure is dedicated to nutrient exchange and the extramatricular mycelium explores soil for nutrients. Eventually, basidiocarps develop to assure last stages of sexual reproduction. The aim of this study is to understand how an EcM fungus uses its gene set to support functional differentiation and development of specialized morphological structures. We examined the transcriptomes of Laccaria bicolor under a series of experimental setups, including the growth with Populus tremula x alba at different developmental stages, basidiocarps and free-living mycelium, under various conditions of N, P and C supply. In particular, N supply induced global transcriptional changes, whereas responses to P supply seemed to be independent from it. Symbiosis development with poplar is characterized by transcriptional waves. Basidiocarp development shares transcriptional signatures with other basidiomycetes. Overlaps in transcriptional responses of L. bicolor hyphae to a host plant and N/C supply next to co-regulation of genes in basidiocarps and mature mycorrhiza were detected. Few genes are induced in a single condition only, but functional and morphological differentiation rather involves fine tuning of larger gene sets. Overall, this transcriptomic atlas builds a reference to study the function and stability of EcM symbiosis in distinct conditions using L. bicolor as a model and indicates both similarities and differences with other ectomycorrhizal fungi, allowing researchers to distinguish conserved processes such as basidiocarp development from nutrient homeostasis.

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