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Article http://dx.doi.org/10.26855/ijfsa.2025.06.007

The Impact of Soil Environmental Factors on the Colonization of Penicillium Purpurogenum and the Efficacy of Nematode Control

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Fangfang Yan¹, Yingjie Zhang¹, Jun Feng¹, Jialin Bai¹, Xingbing Pan¹, Zhengbing Wang¹, Min Mao¹, Wei Ren^2,*

¹Panzhihua Branch of Sichuan Tobacco Corporation, Panzhihua 617026, Sichuan, China.

²Yunnan Green Leaf Bio-control Technology Co., Ltd., Yuxi 653100, Yunnan, China.

*Corresponding author: Wei Ren

Science and Technology Project of Sichuan Tobacco Company, China Tobacco Corporation (202051040024037).

Published: August 15,2025

Abstract

This study systematically explored the regulatory mechanism of soil environmental factors (pH, humidity, temperature, and organic matter content) on the colonization ability of Penicillium purpurogenum and its nematode control effect. The experiments showed that within the pH range of 6.0-7.5, the spore ger-mination rate of Penicillium purpurogenum reached over 92%. The optimal humidity for mycelial expansion was 25%-30% of field capacity, with a growth rate of 4.3mm/d. When the temperature was maintained at 25-28℃, the nematode parasitism rate increased by 47.6% compared to the control group. When the soil organic matter content was ≥2.5%, the spore production of Penicillium purpurogenum increased by 2.1 times, and it could continuously release chitinase (activity up to 38.7U/mg) to destroy nematode egg shells. Principal component analysis revealed that the interaction of the four factors could explain 78.3% of the variation in control effect (R²=0.783, p<0.01). This study provides a theoretical basis for constructing a three-in-one biological control model of "soil micro-environment-microbial activity-pest control", which is particularly suitable for green control of root-knot nematodes in protected agriculture. It is expected to reduce the use of chemical pesticides by more than 60%, and has important practical value for achieving ecological agricultural construction under the "dual carbon" goals.

Keywords

Soil environment; Penicillium purpurogenum; Colonization; Nematode control; Soil conditions

References

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How to cite this paper

The Impact of Soil Environmental Factors on the Colonization of Penicillium Purpurogenum and the Efficacy of Nematode Control

How to cite this paper: Fangfang Yan, Yingjie Zhang, Jun Feng, Jialin Bai, Xingbing Pan, Zhengbing Wang, Min Mao, Wei Ren. (2025) The Impact of Soil Environmental Factors on the Colonization of Penicillium Purpurogenum and the Efficacy of Nematode Control. International Journal of Food Science and Agriculture, 9(2), 80-84.

DOI: http://dx.doi.org/10.26855/ijfsa.2025.06.007