Nitrogen isotopes, carbon isotopes, and pyrolysis products in wood decay fungi, woody tissues, and cellulose from a long-term log decomposition experiment at H.J. Andrews Experimental Forest, Oregon, USA
| Main Author: | Hobbie, Erik A. |
|---|---|
| Other Authors: | Grandy, A. Stuart, Harmon, Mark |
| Format: | Dataset |
| Terbitan: |
Mendeley
, 2019
|
| Subjects: | |
| Online Access: |
https:/data.mendeley.com/datasets/hwtz5j2k7c |
| ctrlnum |
0.17632-hwtz5j2k7c.1 |
|---|---|
| fullrecord |
<?xml version="1.0"?>
<dc><creator>Hobbie, Erik A.</creator><title>Nitrogen isotopes, carbon isotopes, and pyrolysis products in wood decay fungi, woody tissues, and cellulose from a long-term log decomposition experiment at H.J. Andrews Experimental Forest, Oregon, USA</title><publisher>Mendeley</publisher><description>We combined elemental, isotopic, and compositional patterns in wood, cellulose, and sporocarps to investigate functional and isotopic differences in six taxa of decay fungi during log decomposition. Fungal protein was 4-5‰ higher in δ15N and 3-4‰ higher in δ13C than non-protein. Fungal δ15N correlated with the proportion of protein in N-containing pyrolysis products. 15N partitioning between protein and non-protein pools in mycelia prior to sporocarp formation controlled sporocarp δ15N relative to N sources. Radiocarbon measurements separated fungi into heartwood colonizers (Fomitopsis and Hericium, ~30+-year-old carbon) and sapwood colonizers (Mycena, Hypholoma, and Trametes, 1-12-year-old carbon). Sporocarps were 0-2.5‰ higher in δ13C than wood cellulose; this was attributed to compositional differences, assimilation of some 13C-enriched hemicellulose or sucrose, and 13C discrimination during metabolism. Research highlights included: (1) Strategies of carbon and nitrogen acquisition differ among wood decay fungi, (2) Fungal taxa varied widely in chemical composition as assessed by pyrolysis GC-MS, (3) Fungal carbon was from one (Mycena) to 30+ years (Fomitopsis, Hericium) old, (4) Hericium preferentially assimilated 13C-enriched hemicellulose, (5) The removal of 13C-depleted C6 atoms in pentoses causes high 13C in hemicellulose, (6) taxa varied in N partitioning among sporocarps, mycelia, protein, and non-protein. From these measurements, we improved the quantitative and conceptual understanding of how sources, composition and metabolic processing determined isotopic composition of fungi.
</description><subject>Forest Ecology</subject><contributor>Grandy, A. Stuart</contributor><contributor>Harmon, Mark</contributor><type>Other:Dataset</type><identifier>10.17632/hwtz5j2k7c.1</identifier><rights>Creative Commons Attribution 4.0 International</rights><rights>http://creativecommons.org/licenses/by/4.0</rights><relation>https:/data.mendeley.com/datasets/hwtz5j2k7c</relation><date>2019-02-20T02:23:39Z</date><recordID>0.17632-hwtz5j2k7c.1</recordID></dc>
|
| format |
Other:Dataset Other |
| author |
Hobbie, Erik A. |
| author2 |
Grandy, A. Stuart Harmon, Mark |
| title |
Nitrogen isotopes, carbon isotopes, and pyrolysis products in wood decay fungi, woody tissues, and cellulose from a long-term log decomposition experiment at H.J. Andrews Experimental Forest, Oregon, USA |
| publisher |
Mendeley |
| publishDate |
2019 |
| topic |
Forest Ecology |
| url |
https:/data.mendeley.com/datasets/hwtz5j2k7c |
| contents |
We combined elemental, isotopic, and compositional patterns in wood, cellulose, and sporocarps to investigate functional and isotopic differences in six taxa of decay fungi during log decomposition. Fungal protein was 4-5‰ higher in δ15N and 3-4‰ higher in δ13C than non-protein. Fungal δ15N correlated with the proportion of protein in N-containing pyrolysis products. 15N partitioning between protein and non-protein pools in mycelia prior to sporocarp formation controlled sporocarp δ15N relative to N sources. Radiocarbon measurements separated fungi into heartwood colonizers (Fomitopsis and Hericium, ~30+-year-old carbon) and sapwood colonizers (Mycena, Hypholoma, and Trametes, 1-12-year-old carbon). Sporocarps were 0-2.5‰ higher in δ13C than wood cellulose; this was attributed to compositional differences, assimilation of some 13C-enriched hemicellulose or sucrose, and 13C discrimination during metabolism. Research highlights included: (1) Strategies of carbon and nitrogen acquisition differ among wood decay fungi, (2) Fungal taxa varied widely in chemical composition as assessed by pyrolysis GC-MS, (3) Fungal carbon was from one (Mycena) to 30+ years (Fomitopsis, Hericium) old, (4) Hericium preferentially assimilated 13C-enriched hemicellulose, (5) The removal of 13C-depleted C6 atoms in pentoses causes high 13C in hemicellulose, (6) taxa varied in N partitioning among sporocarps, mycelia, protein, and non-protein. From these measurements, we improved the quantitative and conceptual understanding of how sources, composition and metabolic processing determined isotopic composition of fungi.
|
| id |
IOS7969.0.17632-hwtz5j2k7c.1 |
| institution |
Universitas Islam Indragiri |
| affiliation |
onesearch.perpusnas.go.id |
| institution_id |
804 |
| institution_type |
library:university library |
| library |
Teknologi Pangan UNISI |
| library_id |
2816 |
| collection |
Artikel mulono |
| repository_id |
7969 |
| city |
INDRAGIRI HILIR |
| province |
RIAU |
| shared_to_ipusnas_str |
1 |
| repoId |
IOS7969 |
| first_indexed |
2020-04-08T08:23:24Z |
| last_indexed |
2020-04-08T08:23:24Z |
| recordtype |
dc |
| _version_ |
1686587564758138880 |
| score |
17.538404 |