Anaerobic Fungi Isolated From Bactrian Camel Rumen Contents Have Strong Lignocellulosic Bioconversion Potential

This study aims to obtain anaerobic fungi from the rumen and fecal samples and investigates their potential for lignocellulosic bioconversion. Multiple anaerobic strains were isolated from rumen contents (CR1–CR21) and fecal samples (CF1–CF10) of Bactrian camel using the Hungate roll tube technique....

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Main Authors: Yihan Xue, Rui Shen, Yuqi Li, Zhanying Sun, Xiaoni Sun, Fengming Li, Xiaobin Li, Yanfen Cheng, Weiyun Zhu
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-07-01
Series:Frontiers in Microbiology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmicb.2022.888964/full
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author Yihan Xue
Rui Shen
Yuqi Li
Zhanying Sun
Xiaoni Sun
Fengming Li
Xiaobin Li
Yanfen Cheng
Weiyun Zhu
author_facet Yihan Xue
Rui Shen
Yuqi Li
Zhanying Sun
Xiaoni Sun
Fengming Li
Xiaobin Li
Yanfen Cheng
Weiyun Zhu
author_sort Yihan Xue
collection DOAJ
description This study aims to obtain anaerobic fungi from the rumen and fecal samples and investigates their potential for lignocellulosic bioconversion. Multiple anaerobic strains were isolated from rumen contents (CR1–CR21) and fecal samples (CF1–CF10) of Bactrian camel using the Hungate roll tube technique. After screening for fiber degradability, strains from rumen contents (Oontomyces sp. CR2) and feces (Piromyces sp. CF9) were compared with Pecoramyces sp. F1 (earlier isolated from goat rumen, having high CAZymes of GHs) for various fermentation and digestion parameters. The cultures were fermented with different substrates (reed, alfalfa stalk, Broussonetia papyrifera leaves, and Melilotus officinalis) at 39°C for 96 h. The Oontomyces sp. CR2 had the highest total gas and hydrogen production from most substrates in the in vitro rumen fermentation system and also had the highest digestion of dry matter, neutral detergent fiber, acid detergent fiber, and cellulose present in most substrates used. The isolated strains provided higher amounts of metabolites such as lactate, formate, acetate, and ethanol in the in vitro rumen fermentation system for use in various industrial applications. The results illustrated that anaerobic fungi isolated from Bactrian camel rumen contents (Oontomyces sp. CR2) have the highest lignocellulosic bioconversion potential, suggesting that the Bactrian camel rumen could be a good source for the isolation of anaerobic fungi for industrial applications.
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spelling doaj.art-4434d0d14b504e5883684581b8be8dfe2022-12-22T03:42:41ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2022-07-011310.3389/fmicb.2022.888964888964Anaerobic Fungi Isolated From Bactrian Camel Rumen Contents Have Strong Lignocellulosic Bioconversion PotentialYihan Xue0Rui Shen1Yuqi Li2Zhanying Sun3Xiaoni Sun4Fengming Li5Xiaobin Li6Yanfen Cheng7Weiyun Zhu8Laboratory of Gastrointestinal Microbiology, National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, Nanjing, ChinaLaboratory of Gastrointestinal Microbiology, National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, Nanjing, ChinaLaboratory of Gastrointestinal Microbiology, National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, Nanjing, ChinaLaboratory of Gastrointestinal Microbiology, National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, Nanjing, ChinaLaboratory of Gastrointestinal Microbiology, National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, Nanjing, ChinaCollege of Animal Science, Xinjiang Agricultural University, Ürümqi, ChinaCollege of Animal Science, Xinjiang Agricultural University, Ürümqi, ChinaLaboratory of Gastrointestinal Microbiology, National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, Nanjing, ChinaLaboratory of Gastrointestinal Microbiology, National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, Nanjing, ChinaThis study aims to obtain anaerobic fungi from the rumen and fecal samples and investigates their potential for lignocellulosic bioconversion. Multiple anaerobic strains were isolated from rumen contents (CR1–CR21) and fecal samples (CF1–CF10) of Bactrian camel using the Hungate roll tube technique. After screening for fiber degradability, strains from rumen contents (Oontomyces sp. CR2) and feces (Piromyces sp. CF9) were compared with Pecoramyces sp. F1 (earlier isolated from goat rumen, having high CAZymes of GHs) for various fermentation and digestion parameters. The cultures were fermented with different substrates (reed, alfalfa stalk, Broussonetia papyrifera leaves, and Melilotus officinalis) at 39°C for 96 h. The Oontomyces sp. CR2 had the highest total gas and hydrogen production from most substrates in the in vitro rumen fermentation system and also had the highest digestion of dry matter, neutral detergent fiber, acid detergent fiber, and cellulose present in most substrates used. The isolated strains provided higher amounts of metabolites such as lactate, formate, acetate, and ethanol in the in vitro rumen fermentation system for use in various industrial applications. The results illustrated that anaerobic fungi isolated from Bactrian camel rumen contents (Oontomyces sp. CR2) have the highest lignocellulosic bioconversion potential, suggesting that the Bactrian camel rumen could be a good source for the isolation of anaerobic fungi for industrial applications.https://www.frontiersin.org/articles/10.3389/fmicb.2022.888964/fullanaerobic fungibioconversionstrain isolationhydrogenosome metabolismlignocellulose degradation
spellingShingle Yihan Xue
Rui Shen
Yuqi Li
Zhanying Sun
Xiaoni Sun
Fengming Li
Xiaobin Li
Yanfen Cheng
Weiyun Zhu
Anaerobic Fungi Isolated From Bactrian Camel Rumen Contents Have Strong Lignocellulosic Bioconversion Potential
Frontiers in Microbiology
anaerobic fungi
bioconversion
strain isolation
hydrogenosome metabolism
lignocellulose degradation
title Anaerobic Fungi Isolated From Bactrian Camel Rumen Contents Have Strong Lignocellulosic Bioconversion Potential
title_full Anaerobic Fungi Isolated From Bactrian Camel Rumen Contents Have Strong Lignocellulosic Bioconversion Potential
title_fullStr Anaerobic Fungi Isolated From Bactrian Camel Rumen Contents Have Strong Lignocellulosic Bioconversion Potential
title_full_unstemmed Anaerobic Fungi Isolated From Bactrian Camel Rumen Contents Have Strong Lignocellulosic Bioconversion Potential
title_short Anaerobic Fungi Isolated From Bactrian Camel Rumen Contents Have Strong Lignocellulosic Bioconversion Potential
title_sort anaerobic fungi isolated from bactrian camel rumen contents have strong lignocellulosic bioconversion potential
topic anaerobic fungi
bioconversion
strain isolation
hydrogenosome metabolism
lignocellulose degradation
url https://www.frontiersin.org/articles/10.3389/fmicb.2022.888964/full
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