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Molecular mechanism of arginine methyltransferase BcHMT2 in regulating the growth, development, and pathogenicity of Botrytis cinerea
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Yubo LI1, 2, Siqi DENG1, Guang’en DONG1, Jinping ZANG1, Helong SI1, Jingao DONG1, 2, Jihong XING1, 2, Kang ZHANG1, 2
Acta Microbiologica Sinica | 2026, 66(8) : 3889 - 3901
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Acta Microbiologica Sinica | 2026, 66(8): 3889-3901
• Research Article •
Molecular mechanism of arginine methyltransferase BcHMT2 in regulating the growth, development, and pathogenicity of Botrytis cinerea
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Yubo LI1, 2, Siqi DENG1, Guang’en DONG1, Jinping ZANG1, Helong SI1, Jingao DONG1, 2, Jihong XING1, 2, Kang ZHANG1, 2
Affiliations
  • 1.Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, Hebei, China
  • 2.State Key Laboratory of North China Crop Improvement and Regulation, Baoding, Hebei, China
About Author:

These authors contributed equally to this work.

Published: 2026-08-04 doi: 10.13343/j.cnki.wsxb.20260164
Outline
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[Objective] To elucidate the role of arginine methyltransferase in the growth, development, and pathogenicity of Botrytis cinerea. [Methods] Bioinformatics approaches were used to perform sequence alignment, phylogenetic analysis, and conserved domain prediction of the arginine methyltransferase HMT2 from eight fungal species, including B. cinerea, Saccharomyces cerevisiae, Fusarium graminearum, and Magnaporthe oryzae. The gene encoding this enzyme in B. cinerea was identified as BcHMT2. The BcHMT2-deleted mutant was constructed via homologous recombination, followed by phenotypic characterization and pathogenicity assays. [Results] The BcHMT2-deleted mutant exhibited a significantly reduced growth rate, significantly weakend cell wall-degrading enzyme activity, and decreased sclerotial production and conidiation. Meanwhile, the hyphal cells became smaller and the conidial morphology was abnormal. In addition, the mutant displayed markedly attenuated pathogenicity on tomato fruits and tobacco leaves. [Conclusion] This study reveals the regulatory role of BcHMT2 in the growth, development, and pathogenicity of B. cinerea, providing novel insights into the research on the prevention and control of gray mold.

Botrytis cinerea  /  arginine methyltransferase  /  BcHMT2  /  growth and development  /  pathogenicity
Yubo LI, Siqi DENG, Guang’en DONG, Jinping ZANG, Helong SI, Jingao DONG, Jihong XING, Kang ZHANG. Molecular mechanism of arginine methyltransferase BcHMT2 in regulating the growth, development, and pathogenicity of Botrytis cinerea[J]. Acta Microbiologica Sinica, 2026 , 66 (8) : 3889 -3901 . DOI: 10.13343/j.cnki.wsxb.20260164
Funding
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  • National Natural Science Foundation of China(32072369)
  • Central Guidance for Local Technology Development Funding(246Z6506G)
Appendix
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Year 2026 volume 66 Issue 8
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Article Info
doi: 10.13343/j.cnki.wsxb.20260164
  • Receive Date：2026-02-28
  • Online Date：2026-08-21
  • Published：2026-08-04
Article Data
Affiliations
History
  • Received：2026-02-28
  • Accepted：2026-03-17
Funding
National Natural Science Foundation of China(32072369)
Central Guidance for Local Technology Development Funding(246Z6506G)
Affiliations
    1.Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Baoding, Hebei, China
    2.State Key Laboratory of North China Crop Improvement and Regulation, Baoding, Hebei, China

Corresponding:

E-mail: XING Jihong, ;
ZHANG Kang,
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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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