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Screening of macrofungal strains capable of degrading lignocellulose at low temperatures
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Mingyue LIU1, 2, Aiping WANG1, *, Ruilin ZHAO2, 3, *
Acta Microbiologica Sinica | 2025, 65(4) : 1529 - 1541
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Acta Microbiologica Sinica | 2025, 65(4): 1529-1541
Microbial resources isolation, classification and evaluation
Screening of macrofungal strains capable of degrading lignocellulose at low temperatures
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Mingyue LIU1, 2, Aiping WANG1, *, Ruilin ZHAO2, 3, *
Affiliations
  • 1.College of Agriculture, Shanxi Agricultural University, Jinzhong, Shanxi, China
  • 2.State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
  • 3.College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
Published: 2025-04-04 doi: 10.13343/j.cnki.wsxb.20250030
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[Objective] To mine the macrofungal strains capable of efficiently degrading straw at low temperatures, thereby improving the utilization efficiency of straw resources, we measured the lignocellulose degradation abilities of 955 macrofungal strains. [Methods] First, we employed the plate method to screen the strains with carboxymethyl cellulase, xylanase, and laccase activities. Then, we carried out a filter paper degradation test to screen the cellulose-degrading strains. Finally, we performed liquid fermentation with the selected strains and measured their enzyme activities on days three, six, nine, and 12 to identify the dominant strains with strong lignocellulose-degrading abilities. [Results] We identified 11 macrofungal strains exhibiting strong lignocellulose degradation capabilities at a low temperature (15 ℃). The 11 strains were Trametes suaveolens, Irpex lacteus, Crucibulum laeve, Stereum hirsutum, Pleurotus ostreatus, Phlebia acerina, Agaricus xanthodermus, Neofomitella fumosipora, Pholiota multicingulata, Abortiporus biennis, and Armillaria cepistipes. Notably, C. laeve, A. xanthodermus, and P. multicingulata were newly reported for their high lignocellulose-degrading abilities. The maximum activities of carboxymethyl cellulase, xylanase, and laccase in the 11 strains reached 262.31, 91.03, and 196.50 U/mL, respectively. T. suaveolens exhibited carboxymethyl cellulase activity of 168.17 U/mL at 15 ℃, which was significantly higher than that (67.88 U/mL) observed at room temperature. P. ostreatus showed the carboxymethyl cellulase activity of 150.78 U/mL and the laccase activity of 154.32 U/mL. S. hirsutum achieved the laccase activity of 63.27 U/mL at 15 ℃, which was twice the level measured at room temperature. [Conclusion] We successfully identified 11 macrofungal strains with strong lignocellulose-degrading abilities at 15 ℃. The findings provide valuable microbial resources for the degradation of lignocellulose in cold regions and lay a theoretical basis for application of these strains in low-temperature industries.

low-temperature tolerance  /  macrofungi  /  lignocellulose degradation
Mingyue LIU, Aiping WANG, Ruilin ZHAO. Screening of macrofungal strains capable of degrading lignocellulose at low temperatures[J]. Acta Microbiologica Sinica, 2025 , 65 (4) : 1529 -1541 . DOI: 10.13343/j.cnki.wsxb.20250030
  • Strategic Priority Research Program of the Chinese Academy of Sciences(XDA28030401)
Year 2025 volume 65 Issue 4
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Article Info
doi: 10.13343/j.cnki.wsxb.20250030
  • Receive Date:2025-01-13
  • Online Date:2026-02-06
  • Published:2025-04-04
Article Data
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History
  • Received:2025-01-13
  • Accepted:2025-03-07
Funding
Strategic Priority Research Program of the Chinese Academy of Sciences(XDA28030401)
Affiliations
    1.College of Agriculture, Shanxi Agricultural University, Jinzhong, Shanxi, China
    2.State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
    3.College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China

Corresponding:

*E-mail: WANG Aiping, ;
ZHAO Ruilin,
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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