Title: Comparative genomics of pyrophilous fungi reveals a link between fire events and developmental genes

Abstract

Forest fires generate a large amount of carbon that remains resident on the site as dead and partially 'pyrolysed' (i.e. burnt) material that has long residency times and constitutes a significant pool in fire-prone ecosystems. In addition, fire-induced hydrophobic soil layers, caused by condensation of pyrolysed waxes and lipids, increase post-fire erosion and can lead to long-term productivity losses. A small set of pyrophilous fungi dominate post-fire soils and are likely to be involved with the degradation of all these compounds, yet almost nothing is currently known about what these fungi do or the metabolic processes they employ. In this study, we sequenced and analysed genomes from fungi isolated after Rim fire near Yosemite National Park in 2013 and showed the enrichment/expansion of CAZymes and families known to be involved in fruiting body initiation when compared to other basidiomycete fungi. We found gene families potentially involved in the degradation of the hydrophobic layer and pyrolysed organic matter, such as hydrophobic surface binding proteins, laccases (AA1_1), xylanases (GH10, GH11), fatty acid desaturases and tannases. Thus, pyrophilous fungi are important actors to restate the soil's functional capabilities.

Authors:

Steindorff, Andrei S.  ^[1];

• Search DOE PAGES for author "Steindorff, Andrei S."
• Search DOE PAGES for ORCID "0000-0002-2052-2848"

Carver, Akiko ^[2]; Calhoun, Sara  ^[1];

• Search DOE PAGES for author "Calhoun, Sara"
• Search DOE PAGES for ORCID "0000-0003-2942-1338"

Stillman, Kyra ^[3]; Liu, Haowen ^[3]; Lipzen, Anna  ^[1];

• Search DOE PAGES for author "Lipzen, Anna"
• Search DOE PAGES for ORCID "0000-0003-2293-9329"

He, Guifen ^[1]; Yan, Mi ^[1]; Pangilinan, Jasmyn ^[1]; LaButti, Kurt  ^[1];

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• Search DOE PAGES for ORCID "0000-0002-5838-1972"

Ng, Vivian  ^[1];

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• Search DOE PAGES for ORCID "0000-0001-8941-6931"

Bruns, Thomas D.  ^[3];

• Search DOE PAGES for author "Bruns, Thomas D."
• Search DOE PAGES for ORCID "0000-0002-2943-8669"

Grigoriev, Igor V.  ^[2]

• Search DOE PAGES for author "Grigoriev, Igor V."
• Search DOE PAGES for ORCID "0000-0002-3136-8903"

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+ Show Author Affiliations

1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
3. Univ. of California, Berkeley, CA (United States)

Publication Date:

Thu Oct 08 00:00:00 EDT 2020

Research Org.:

Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Biological and Environmental Research (BER)

OSTI Identifier:

1767061

Alternate Identifier(s):

OSTI ID: 1786940; OSTI ID: 1826320

Grant/Contract Number:  

SC0020351; SC0016365; AC02‐05CH11231; DE‐SC0020351; DE‐AC02‐05CH11231; DE‐SC0016365; AC02-05CH11231

Resource Type:

Accepted Manuscript

Journal Name:

Environmental Microbiology

Additional Journal Information:

Journal Volume: 23; Journal Issue: 1; Journal ID: ISSN 1462-2912

Publisher:

Wiley

Country of Publication:

United States

Language:

English

Subject:

59 BASIC BIOLOGICAL SCIENCES; Post-fire soil; Pyrophilous fungi; Comparative genomics