Enrichment and broad representation of plant biomass-degrading enzymes in the specialized hyphal swellings of Leucoagaricus gongylophorus, the fungal symbiont of leaf-cutter ants
Abstract
Leaf-cutter ants are prolific and conspicuous constituents of Neotropical ecosystems that derive energy from specialized fungus gardens they cultivate using prodigious amounts of foliar biomass. The basidiomycetous cultivar of the ants, Leucoagaricus gongylophorus, produces specialized hyphal swellings called gongylidia that serve as the primary food source of ant colonies. Gongylidia also contain plant biomass-degrading enzymes that become concentrated in ant digestive tracts and are deposited within fecal droplets onto fresh foliar material as ants incorporate it into the fungus garden. Although the enzymes concentrated by L. gongylophorus within gongylidia are thought to be critical to the initial degradation of plant biomass, only a few enzymes present in these hyphal swellings have been identified. Here we use proteomic methods to identify proteins present in the gongylidia of three Atta cephalotes colonies. Our results demonstrate that a diverse but consistent set of enzymes is present in gongylidia, including numerous plant biomass-degrading enzymes likely involved in the degradation of polysaccharides, plant toxins, and proteins. Overall, gongylidia contained over three quarters of all biomass-degrading enzymes identified in the L. gongylophorus genome, demonstrating that the majority of the enzymes produced by this fungus for biomass breakdown are ingested by the ants. We also identify amore »
- Authors:
-
- University of Wisconson-Madison, Madison, WI (United States). Department of Bacteriology; University of Hawaii, Manoa, Honolulu, HI (United States). Cemter for Microbial Oceanography Research and Education.
- University of Wisconson-Madison, Madison, WI (United States). Department of Bacteriology.
- University of Wisconson-Madison, Madison, WI (United States). Department of Bacteriology.
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Biological Sciences Divisio
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Biological Sciences Division; University of Oklahoma, Norman, OK (United States). Department of Chemistry and Biochemistr
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Biological Sciences Division.
- Smithsonian National Museum of Natural History, Washington, DC (United States)
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF)
- OSTI Identifier:
- 1213522
- Grant/Contract Number:
- AC05-76RL01830; FC02-07ER64494
- Resource Type:
- Accepted Manuscript
- Journal Name:
- PLoS ONE
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 8; Journal ID: ISSN 1932-6203
- Publisher:
- Public Library of Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; fungi; ants; proteases; fungal genomics; biomass (ecology); proteomics; symbiosis; fungiculture
Citation Formats
Aylward, Frank O., Khadempour, Lily, Tremmel, Daniel M., McDonald, Bradon R., Nicora, Carrie D., Wu, Si, Moore, Ronald J., Orton, Daniel J., Monroe, Matthew E., Piehowski, Paul D., Purvine, Samuel O., Smith, Richard D., Lipton, Mary S., Burnum-Johnson, Kristin E., Currie, Cameron R., and Brady, Sean. Enrichment and broad representation of plant biomass-degrading enzymes in the specialized hyphal swellings of Leucoagaricus gongylophorus, the fungal symbiont of leaf-cutter ants. United States: N. p., 2015.
Web. doi:10.1371/journal.pone.0134752.
Aylward, Frank O., Khadempour, Lily, Tremmel, Daniel M., McDonald, Bradon R., Nicora, Carrie D., Wu, Si, Moore, Ronald J., Orton, Daniel J., Monroe, Matthew E., Piehowski, Paul D., Purvine, Samuel O., Smith, Richard D., Lipton, Mary S., Burnum-Johnson, Kristin E., Currie, Cameron R., & Brady, Sean. Enrichment and broad representation of plant biomass-degrading enzymes in the specialized hyphal swellings of Leucoagaricus gongylophorus, the fungal symbiont of leaf-cutter ants. United States. https://doi.org/10.1371/journal.pone.0134752
Aylward, Frank O., Khadempour, Lily, Tremmel, Daniel M., McDonald, Bradon R., Nicora, Carrie D., Wu, Si, Moore, Ronald J., Orton, Daniel J., Monroe, Matthew E., Piehowski, Paul D., Purvine, Samuel O., Smith, Richard D., Lipton, Mary S., Burnum-Johnson, Kristin E., Currie, Cameron R., and Brady, Sean. Fri .
"Enrichment and broad representation of plant biomass-degrading enzymes in the specialized hyphal swellings of Leucoagaricus gongylophorus, the fungal symbiont of leaf-cutter ants". United States. https://doi.org/10.1371/journal.pone.0134752. https://www.osti.gov/servlets/purl/1213522.
@article{osti_1213522,
title = {Enrichment and broad representation of plant biomass-degrading enzymes in the specialized hyphal swellings of Leucoagaricus gongylophorus, the fungal symbiont of leaf-cutter ants},
author = {Aylward, Frank O. and Khadempour, Lily and Tremmel, Daniel M. and McDonald, Bradon R. and Nicora, Carrie D. and Wu, Si and Moore, Ronald J. and Orton, Daniel J. and Monroe, Matthew E. and Piehowski, Paul D. and Purvine, Samuel O. and Smith, Richard D. and Lipton, Mary S. and Burnum-Johnson, Kristin E. and Currie, Cameron R. and Brady, Sean},
abstractNote = {Leaf-cutter ants are prolific and conspicuous constituents of Neotropical ecosystems that derive energy from specialized fungus gardens they cultivate using prodigious amounts of foliar biomass. The basidiomycetous cultivar of the ants, Leucoagaricus gongylophorus, produces specialized hyphal swellings called gongylidia that serve as the primary food source of ant colonies. Gongylidia also contain plant biomass-degrading enzymes that become concentrated in ant digestive tracts and are deposited within fecal droplets onto fresh foliar material as ants incorporate it into the fungus garden. Although the enzymes concentrated by L. gongylophorus within gongylidia are thought to be critical to the initial degradation of plant biomass, only a few enzymes present in these hyphal swellings have been identified. Here we use proteomic methods to identify proteins present in the gongylidia of three Atta cephalotes colonies. Our results demonstrate that a diverse but consistent set of enzymes is present in gongylidia, including numerous plant biomass-degrading enzymes likely involved in the degradation of polysaccharides, plant toxins, and proteins. Overall, gongylidia contained over three quarters of all biomass-degrading enzymes identified in the L. gongylophorus genome, demonstrating that the majority of the enzymes produced by this fungus for biomass breakdown are ingested by the ants. We also identify a set of 40 of these enzymes enriched in gongylidia compared to whole fungus garden samples, suggesting that certain enzymes may be particularly important in the initial degradation of foliar material. Our work sheds light on the complex interplay between leaf-cutter ants and their fungal symbiont that allows for the host insects to occupy an herbivorous niche by indirectly deriving energy from plant biomass.},
doi = {10.1371/journal.pone.0134752},
journal = {PLoS ONE},
number = 8,
volume = 10,
place = {United States},
year = {Fri Aug 28 00:00:00 EDT 2015},
month = {Fri Aug 28 00:00:00 EDT 2015}
}
Web of Science
Works referenced in this record:
The Dynamics of Plant Cell-Wall Polysaccharide Decomposition in Leaf-Cutting Ant Fungus Gardens
journal, March 2011
- Moller, Isabel E.; De Fine Licht, Henrik H.; Harholt, Jesper
- PLoS ONE, Vol. 6, Issue 3
Fungus garden platforms improve hygiene during nest establishment in Acromyrmex ants (Hymenoptera, Formicidae, Attini)
journal, January 2007
- Fernández-Marín, H.; Zimmerman, J. K.; Wcislo, W. T.
- Insectes Sociaux, Vol. 54, Issue 1
MEROPS : the database of proteolytic enzymes, their substrates and inhibitors
journal, October 2013
- Rawlings, Neil D.; Waller, Matthew; Barrett, Alan J.
- Nucleic Acids Research, Vol. 42, Issue D1
The Genome Sequence of the Leaf-Cutter Ant Atta cephalotes Reveals Insights into Its Obligate Symbiotic Lifestyle
journal, February 2011
- Suen, Garret; Teiling, Clotilde; Li, Lewyn
- PLoS Genetics, Vol. 7, Issue 2
Evolutionary patterns of proteinase activity in attine ant fungus gardens
journal, January 2011
- Semenova, Tatyana A.; Hughes, David P.; Boomsma, Jacobus J.
- BMC Microbiology, Vol. 11, Issue 1
Leucoagaricus gongylophorus Produces Diverse Enzymes for the Degradation of Recalcitrant Plant Polymers in Leaf-Cutter Ant Fungus Gardens
journal, April 2013
- Aylward, Frank O.; Burnum-Johnson, Kristin E.; Tringe, Susannah G.
- Applied and Environmental Microbiology, Vol. 79, Issue 12
Cellulose degradation byLeucocoprinus gongylophorus, the fungus cultured by the leaf-cutting antAtta sexdens rubropilosa
journal, January 1995
- Bacci, M.; Anversa, M. M.; Pagnocca, F. C.
- Antonie van Leeuwenhoek, Vol. 67, Issue 4
Faecal proteinases of the fungus-growing ant, Atta texana: Properties, significance and possible origin
journal, October 1975
- Boyd, Norman D.; Martin, Michael M.
- Insect Biochemistry, Vol. 5, Issue 5
Chemically Etched Open Tubular and Monolithic Emitters for Nanoelectrospray Ionization Mass Spectrometry
journal, November 2006
- Kelly, Ryan T.; Page, Jason S.; Luo, Quanzhou
- Analytical Chemistry, Vol. 78, Issue 22, p. 7796-7801
Rapid shifts in Atta cephalotes fungus-garden enzyme activity after a change in fungal substrate (Attini, Formicidae)
journal, November 2010
- Kooij, P. W.; Schiøtt, M.; Boomsma, J. J.
- Insectes Sociaux, Vol. 58, Issue 2
Microbial Community Structure of Leaf-Cutter Ant Fungus Gardens and Refuse Dumps
journal, March 2010
- Scott, Jarrod J.; Budsberg, Kevin J.; Suen, Garret
- PLoS ONE, Vol. 5, Issue 3
Fungal hyphae as a source of nutrients for the leaf-cutting ant Atta sexdens
journal, March 1995
- Bass, M.; Cherrett, J. M.
- Physiological Entomology, Vol. 20, Issue 1
The Evolutionary Innovation of Nutritional Symbioses in Leaf-Cutter Ants
journal, January 2012
- Aylward, Frank O.; Currie, Cameron R.; Suen, Garret
- Insects, Vol. 3, Issue 1
An extracellular aryl-alcohol oxidase from the white-rot fungus Bjerkandera adusta
journal, March 1990
- Muheim, Andreas; Waldner, Roland; Leisola, Matti S. A.
- Enzyme and Microbial Technology, Vol. 12, Issue 3
STEPS: A grid search methodology for optimized peptide identification filtering of MS/MS database search results
journal, February 2013
- Piehowski, Paul D.; Petyuk, Vladislav A.; Sandoval, John D.
- PROTEOMICS, Vol. 13, Issue 5
Laccase detoxification mediates the nutritional alliance between leaf-cutting ants and fungus-garden symbionts
journal, December 2012
- De Fine Licht, H. H.; Schiott, M.; Rogowska-Wrzesinska, A.
- Proceedings of the National Academy of Sciences, Vol. 110, Issue 2
Faecal proteinases of the fungus-growing ant, Atta texana: Their fungal origin and ecological significance
journal, November 1975
- Boyd, Norman D.; Martin, Michael M.
- Journal of Insect Physiology, Vol. 21, Issue 11
Parameters for accurate genome alignment
journal, February 2010
- Frith, Martin C.; Hamada, Michiaki; Horton, Paul
- BMC Bioinformatics, Vol. 11, Issue 1
Do herbivores exert top‐down effects in Neotropical savannas? Estimates of biomass consumption by leaf‐cutter ants
journal, January 2008
- Costa, Alan N.; Vasconcelos, Heraldo L.; Vieira‐Neto, Ernane H. M.
- Journal of Vegetation Science, Vol. 19, Issue 6
The carbohydrate-active enzymes database (CAZy) in 2013
journal, November 2013
- Lombard, Vincent; Golaconda Ramulu, Hemalatha; Drula, Elodie
- Nucleic Acids Research, Vol. 42, Issue D1
The Cellulose-Utilizing Capability of the Fungus Cultured by the Attine Ant Atta colombica tonsipes1
journal, November 1969
- Martin, Michael M.; Weber, Neal A.
- Annals of the Entomological Society of America, Vol. 62, Issue 6
FOLy: An integrated database for the classification and functional annotation of fungal oxidoreductases potentially involved in the degradation of lignin and related aromatic compounds
journal, May 2008
- Levasseur, Anthony; Piumi, François; Coutinho, Pedro M.
- Fungal Genetics and Biology, Vol. 45, Issue 5
Evolutionary History of the Symbiosis Between Fungus-Growing Ants and Their Fungi
journal, December 1994
- Chapela, I. H.; Rehner, S. A.; Schultz, T. R.
- Science, Vol. 266, Issue 5191
Evidence that the fungus cultured by leaf-cutting ants does not metabolize cellulose
journal, May 2002
- Abril, Adriana B.; Bucher, Enrique H.
- Ecology Letters, Vol. 5, Issue 3
Spectral Probabilities and Generating Functions of Tandem Mass Spectra: A Strike against Decoy Databases
journal, August 2008
- Kim, Sangtae; Gupta, Nitin; Pevzner, Pavel A.
- Journal of Proteome Research, Vol. 7, Issue 8
Microfungal “Weeds” in the Leafcutter Ant Symbiosis
journal, March 2008
- Rodrigues, A.; Bacci Jr, M.; Mueller, U. G.
- Microbial Ecology, Vol. 56, Issue 4
The fungal symbiont of Acromyrmex leaf-cutting ants expresses the full spectrum of genes to degrade cellulose and other plant cell wall polysaccharides
journal, January 2013
- Grell, Morten N.; Linde, Tore; Nygaard, Sanne
- BMC Genomics, Vol. 14, Issue 1
Variability of non-mutualistic filamentous fungi associated withAtta sexdens rubropilosa nests
journal, September 2005
- Rodrigues, A.; Pagnocca, F. C.; Bacci, M.
- Folia Microbiologica, Vol. 50, Issue 5
Activity of faecal fluid of a leaf-cutting ant toward plant cell wall polysaccharides
journal, December 1975
- Martin, M. M.; Boyd, N. D.; Gieselmann, M. J.
- Journal of Insect Physiology, Vol. 21, Issue 12
Leaf-cutting ant fungi produce cell wall degrading pectinase complexes reminiscent of phytopathogenic fungi
journal, December 2010
- Schiøtt, Morten; Rogowska-Wrzesinska, Adelina; Roepstorff, Peter
- BMC Biology, Vol. 8, Issue 1
An Insect Herbivore Microbiome with High Plant Biomass-Degrading Capacity
journal, September 2010
- Suen, Garret; Scott, Jarrod J.; Aylward, Frank O.
- PLoS Genetics, Vol. 6, Issue 9
The fungus gardens of leaf-cutter ants undergo a distinct physiological transition during biomass degradation: Metabolomics of leaf-cutter ant fungus gardens
journal, April 2014
- Huang, Eric L.; Aylward, Frank O.; Kim, Young-Mo
- Environmental Microbiology Reports, Vol. 6, Issue 4
Symbiotic adaptations in the fungal cultivar of leaf-cutting ants
journal, December 2014
- De Fine Licht, Henrik H.; Boomsma, Jacobus J.; Tunlid, Anders
- Nature Communications, Vol. 5, Issue 1
Weeding and grooming of pathogens in agriculture by ants
journal, May 2001
- Currie, Cameron R.; Stuart, Alison E.
- Proceedings of the Royal Society of London. Series B: Biological Sciences, Vol. 268, Issue 1471
Self-made frits for nanoscale columns in proteomics
journal, October 2005
- Maiolica, Alessio; Borsotti, Dario; Rappsilber, Juri
- PROTEOMICS, Vol. 5, Issue 15
Metagenomic and metaproteomic insights into bacterial communities in leaf-cutter ant fungus gardens
journal, March 2012
- Aylward, Frank O.; Burnum, Kristin E.; Scott, Jarrod J.
- The ISME Journal, Vol. 6, Issue 9
The prominent role of fungi and fungal enzymes in the ant–fungus biomass conversion symbiosis
journal, April 2014
- Lange, L.; Grell, M. N.
- Applied Microbiology and Biotechnology, Vol. 98, Issue 11
Metabolism of Plant Polysaccharides byLeucoagaricus gongylophorus, the Symbiotic Fungus of the Leaf-Cutting Ant Atta sexdens L
journal, December 1998
- Gomes De Siqueira, Célia; Bacci, Maurício; Pagnocca, Fernando Carlos
- Applied and Environmental Microbiology, Vol. 64, Issue 12
Electron and Fluorescence Microscopy of Extracellular Glucan and Aryl-Alcohol Oxidase during Wheat-Straw Degradation by Pleurotus eryngii
journal, January 1998
- Barrasa, J. M.; Gutiérrez, A.; Escaso, V.
- Applied and Environmental Microbiology, Vol. 64, Issue 1
Self-made frits for nanoscale columns in proteomics
journal, October 2005
- Maiolica, Alessio; Borsotti, Dario; Rappsilber, Juri
- PROTEOMICS, Vol. 5, Issue 15
STEPS: A grid search methodology for optimized peptide identification filtering of MS/MS database search results
journal, February 2013
- Piehowski, Paul D.; Petyuk, Vladislav A.; Sandoval, John D.
- PROTEOMICS, Vol. 13, Issue 5
Fungus garden platforms improve hygiene during nest establishment in Acromyrmex ants (Hymenoptera, Formicidae, Attini)
journal, January 2007
- Fernández-Marín, H.; Zimmerman, J. K.; Wcislo, W. T.
- Insectes Sociaux, Vol. 54, Issue 1
Microfungal “Weeds” in the Leafcutter Ant Symbiosis
journal, March 2008
- Rodrigues, A.; Bacci Jr, M.; Mueller, U. G.
- Microbial Ecology, Vol. 56, Issue 4
Faecal proteinases of the fungus-growing ant, Atta texana: Properties, significance and possible origin
journal, October 1975
- Boyd, Norman D.; Martin, Michael M.
- Insect Biochemistry, Vol. 5, Issue 5
The presence of chitinase in the digestive fluids of ants
journal, January 1976
- Martin, M. M.; Gieselmann, M. J.; Martin, J. S.
- Comparative Biochemistry and Physiology Part A: Physiology, Vol. 53, Issue 4
Fungal enzymes transferred by leaf-cutting ants in their fungus gardens
journal, January 2004
- Rønhede, Stig; Boomsma, Jacobus J.; Rosendahl, Søren
- Mycological Research, Vol. 108, Issue 1
Metagenomic and metaproteomic insights into bacterial communities in leaf-cutter ant fungus gardens
journal, March 2012
- Aylward, Frank O.; Burnum, Kristin E.; Scott, Jarrod J.
- The ISME Journal, Vol. 6, Issue 9
Symbiotic adaptations in the fungal cultivar of leaf-cutting ants
journal, December 2014
- De Fine Licht, Henrik H.; Boomsma, Jacobus J.; Tunlid, Anders
- Nature Communications, Vol. 5, Issue 1
MEROPS : the database of proteolytic enzymes, their substrates and inhibitors
journal, October 2013
- Rawlings, Neil D.; Waller, Matthew; Barrett, Alan J.
- Nucleic Acids Research, Vol. 42, Issue D1
Reduced biological control and enhanced chemical pest management in the evolution of fungus farming in ants
journal, March 2009
- Fernández-Marín, Hermógenes; Zimmerman, Jess K.; Nash, David R.
- Proceedings of the Royal Society B: Biological Sciences, Vol. 276, Issue 1665
Fungal hyphae as a source of nutrients for the leaf-cutting ant Atta sexdens
journal, March 1995
- Bass, M.; Cherrett, J. M.
- Physiological Entomology, Vol. 20, Issue 1
Evolutionary Transitions in Enzyme Activity of ant Fungus Gardens
journal, January 2010
- De Fine Licht, Henrik H.; Schiøtt, Morten; Mueller, Ulrich G.
- Evolution
Parameters for accurate genome alignment
journal, February 2010
- Frith, Martin C.; Hamada, Michiaki; Horton, Paul
- BMC Bioinformatics, Vol. 11, Issue 1
The fungal symbiont of Acromyrmex leaf-cutting ants expresses the full spectrum of genes to degrade cellulose and other plant cell wall polysaccharides
journal, January 2013
- Grell, Morten N.; Linde, Tore; Nygaard, Sanne
- BMC Genomics, Vol. 14, Issue 1
Evolutionary patterns of proteinase activity in attine ant fungus gardens
journal, January 2011
- Semenova, Tatyana A.; Hughes, David P.; Boomsma, Jacobus J.
- BMC Microbiology, Vol. 11, Issue 1
Leaf-cutting ant fungi produce cell wall degrading pectinase complexes reminiscent of phytopathogenic fungi
journal, December 2010
- Schiøtt, Morten; Rogowska-Wrzesinska, Adelina; Roepstorff, Peter
- BMC Biology, Vol. 8, Issue 1
An Insect Herbivore Microbiome with High Plant Biomass-Degrading Capacity
journal, September 2010
- Suen, Garret; Scott, Jarrod J.; Aylward, Frank O.
- PLoS Genetics, Vol. 6, Issue 9
The Genome Sequence of the Leaf-Cutter Ant Atta cephalotes Reveals Insights into Its Obligate Symbiotic Lifestyle
journal, February 2011
- Suen, Garret; Teiling, Clotilde; Li, Lewyn
- PLoS Genetics, Vol. 7, Issue 2
Microbial Community Structure of Leaf-Cutter Ant Fungus Gardens and Refuse Dumps
journal, March 2010
- Scott, Jarrod J.; Budsberg, Kevin J.; Suen, Garret
- PLoS ONE, Vol. 5, Issue 3
The Dynamics of Plant Cell-Wall Polysaccharide Decomposition in Leaf-Cutting Ant Fungus Gardens
journal, March 2011
- Moller, Isabel E.; De Fine Licht, Henrik H.; Harholt, Jesper
- PLoS ONE, Vol. 6, Issue 3
The Evolutionary Innovation of Nutritional Symbioses in Leaf-Cutter Ants
journal, January 2012
- Aylward, Frank O.; Currie, Cameron R.; Suen, Garret
- Insects, Vol. 3, Issue 1
Works referencing / citing this record:
Biodegradation of anthracene and different PAHs by a yellow laccase from Leucoagaricus gongylophorus
journal, February 2019
- Ike, Priscila Tomie Leme; Birolli, Willian Garcia; dos Santos, Danilo Martins
- Environmental Science and Pollution Research, Vol. 26, Issue 9
The past, present and future of microbiome analyses
journal, September 2016
- White, Richard Allen; Callister, Stephen J.; Moore, Ronald J.
- Nature Protocols, Vol. 11, Issue 11
Profiling microbial lignocellulose degradation and utilization by emergent omics technologies
journal, July 2016
- Rosnow, Joshua J.; Anderson, Lindsey N.; Nair, Reji N.
- Critical Reviews in Biotechnology, Vol. 37, Issue 5
Welcome to the Atta world: A framework for understanding the effects of leaf‐cutter ants on ecosystem functions
journal, March 2019
- Swanson, Amanda C.; Schwendenmann, Luitgard; Allen, Michael F.
- Functional Ecology, Vol. 33, Issue 8
The fungal cultivar of leaf-cutter ants produces specific enzymes in response to different plant substrates
journal, October 2016
- Khadempour, Lily; Burnum-Johnson, Kristin E.; Baker, Erin S.
- Molecular Ecology, Vol. 25, Issue 22
Discovery of potential pathways for biological conversion of poplar wood into lipids by co-fermentation of Rhodococci strains
journal, March 2019
- Li, Xiaolu; He, Yucai; Zhang, Libing
- Biotechnology for Biofuels, Vol. 12, Issue 1