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Identification and characterization of sugarcane Sporisorium scitamineum antagonists
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Nan LI1, Dazhi SUN1, Ziwei WANG2, Jingjing CAO3, Zhiqin WANG3, Pan ZHAO3, 4, Naiqin ZHONG1, 3, 4, *
Acta Microbiologica Sinica | 2024, 64(10) : 3685 - 3701
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Acta Microbiologica Sinica | 2024, 64(10): 3685-3701
• Research Articles •
Identification and characterization of sugarcane Sporisorium scitamineum antagonists
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Nan LI1, Dazhi SUN1, Ziwei WANG2, Jingjing CAO3, Zhiqin WANG3, Pan ZHAO3, 4, Naiqin ZHONG1, 3, 4, *
Affiliations
  • 1 School of Agriculture, Ningxia University, Yinchuan 750021, Ningxia, China
  • 2 College of Plant Protection, Shanxi Agricultural University, Jinzhong 030600, Shanxi, China
  • 3 Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
  • 4 Inner Mongolia Autonomous Region Key Laboratory for Integrated Development of Potato Industry, Hulunbuir 021000, Inner Mongolia, China
Published: 2024-06-14 doi: 10.13343/j.cnki.wsxb.20240169
Outline
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Sugarcane smut caused by Sporisorium scitamineum is one of the major diseases affecting the development of China's sugar industry, and biocontrol is currently the most efficient and safe means, which necessitates the screening of antagonists with strong environmental adaptability and inhibitory effects. [Objective] To isolate and identify the strains with good antagonistic effects against S. scitamineum from soil and provide high-quality biocontrol strain resources for the efficient prevention and control of sugarcane smut. [Methods] The antagonists were isolated by the plate confrontation assay, and their taxonomic status was determined by morphological observation, physiological and biochemical tests, and 16S rRNA gene sequencing. The pot and field experiments were conducted to study the inhibition effects of the antagonists on sugarcane smut. [Results] Three strains of bacteria with significant antagonistic effects were obtained. Strains GB-3 and GH16-3 were identified as Bacillus velezensis and GH16-8 as B. amyloliquefaciens, with the inhibition zone diameters of (30.00±1.07), (44.00±1.21), and (18.00±0.89) mm and the inhibition rates of 16.12%, 31.92%, and 5.91%, respectively. The inhibition effects of the three strains against sugarcane smut were 74.33%, 76.57%, and 69.07% in pots and 20.08%, 55.59%, and 50.08% in fields, respectively. All the three strains had phosphorus-solubilizing ability, tolerance to extreme salt-alkaline environments, and inhibitory effects on a variety of phytopathogenic bacteria and fungi, with the indole-3-acetic acid (IAA) yields of 2.12, 1.30, and 1.22 mg/L, respectively. The application of the three strains increased the sugarcane plant height by 28.25%, 17.09%, and 23.31%, respectively. [Conclusion] Strain GH16-3 has strong environmental adaptability, growth-promoting effect, and prevention effect against sugarcane smut, demonstrating a promising application prospect.

sugarcane smut  /  Sporisorium scitamineum  /  antagonist  /  inhibition effects
Nan LI, Dazhi SUN, Ziwei WANG, Jingjing CAO, Zhiqin WANG, Pan ZHAO, Naiqin ZHONG. Identification and characterization of sugarcane Sporisorium scitamineum antagonists[J]. Acta Microbiologica Sinica, 2024 , 64 (10) : 3685 -3701 . DOI: 10.13343/j.cnki.wsxb.20240169
Funding
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  • Strategic Priority Research Program of Chinese Academy of Sciences(XDA0450000)
  • State Key Laboratory of Plant Genomics Program(SKLPG2016A-40)
  • Key Technologies Research and Development Program of Inner Mongolia Autonomous Region(2021GG0300)
Appendix
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Year 2024 volume 64 Issue 10
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Article Info
doi: 10.13343/j.cnki.wsxb.20240169
  • Receive Date：2024-03-19
  • Online Date：2026-03-21
  • Published：2024-06-14
Article Data
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History
  • Received：2024-03-19
  • Accepted：2024-06-03
Funding
Strategic Priority Research Program of Chinese Academy of Sciences(XDA0450000)
State Key Laboratory of Plant Genomics Program(SKLPG2016A-40)
Key Technologies Research and Development Program of Inner Mongolia Autonomous Region(2021GG0300)
Affiliations
    1 School of Agriculture, Ningxia University, Yinchuan 750021, Ningxia, China
    2 College of Plant Protection, Shanxi Agricultural University, Jinzhong 030600, Shanxi, China
    3 Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
    4 Inner Mongolia Autonomous Region Key Laboratory for Integrated Development of Potato Industry, Hulunbuir 021000, Inner Mongolia, China

Corresponding:

*ZHONG Naiqin, E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
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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