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Volume 11
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Isolation and Identification of Endophytic Chaetomium sp. Strain V3 from Ambrosia and Its Effects on Tomato Plant Growth

by
Yuping Jiang
1,
Nazish Mehnaz
2,
Bing Song
1,
Mengyu Sun
1,
Leibei Yang
1,
Xuemei Li
1,
Yueying Li
1,
Lanlan Wang
1,
Ze Wang
1,
Yuzhu Dong
1,* and
Lianju Ma
1,*
1
College of Life Science, Shenyang Normal University, Shenyang 110034, China
2
Department of Microbiology and Molecular Genetics, The Women University Multan, Multan 60000, Pakistan
*
Authors to whom correspondence should be addressed.
J. Fungi 2025, 11(12), 870; https://doi.org/10.3390/jof11120870 (registering DOI)
Submission received: 4 November 2025 / Revised: 4 December 2025 / Accepted: 5 December 2025 / Published: 7 December 2025
(This article belongs to the Section Environmental and Ecological Interactions of Fungi)
Versions Notes

Abstract

Ragweed (Ambrosia artemisiifolia L.), an invasive species, is well-known for its rapid growth, strong reproductive potential, and high stress tolerance. The evolutionary distinctiveness and strong ecological adaptability of Ambrosia have enabled the endophytic fungi that coevolved with it to become valuable microbial resources. In this study, one of the endophytic fungi isolated from ragweed was named strain V3. Strain V3 was identified as Chaetomium sp. (Ascomycota) based on morphological characteristics and molecular analyses. The strain V3 promotes tomato growth by significantly increasing plant height, root length, the number of lateral roots, and chlorophyll content, effectively enhancing photosynthesis and consequently improving fruit yield. Meanwhile, compared to the control, tomato fruits inoculated with strain V3 exhibited significantly higher levels of vitamin C (VC) and lycopene, indicating a notable enhancement in fruit quality. Additionally, strain V3 is capable of producing phytohormones, including indole-3-acetic acid (IAA), gibberellin (GA3), and zeatin, and of regulating the expression of tomato auxin response factor (ARF) genes. This study demonstrates that strain V3 has the potential to promote tomato plant growth.
Keywords: ragweed; endophytic fungi; Chaetomium sp.; growth-promoting mechanisms; phytohormones; ARF ragweed; endophytic fungi; Chaetomium sp.; growth-promoting mechanisms; phytohormones; ARF

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MDPI and ACS Style

Jiang, Y.; Mehnaz, N.; Song, B.; Sun, M.; Yang, L.; Li, X.; Li, Y.; Wang, L.; Wang, Z.; Dong, Y.; et al. Isolation and Identification of Endophytic Chaetomium sp. Strain V3 from Ambrosia and Its Effects on Tomato Plant Growth. J. Fungi 2025, 11, 870. https://doi.org/10.3390/jof11120870

AMA Style

Jiang Y, Mehnaz N, Song B, Sun M, Yang L, Li X, Li Y, Wang L, Wang Z, Dong Y, et al. Isolation and Identification of Endophytic Chaetomium sp. Strain V3 from Ambrosia and Its Effects on Tomato Plant Growth. Journal of Fungi. 2025; 11(12):870. https://doi.org/10.3390/jof11120870

Chicago/Turabian Style

Jiang, Yuping, Nazish Mehnaz, Bing Song, Mengyu Sun, Leibei Yang, Xuemei Li, Yueying Li, Lanlan Wang, Ze Wang, Yuzhu Dong, and et al. 2025. "Isolation and Identification of Endophytic Chaetomium sp. Strain V3 from Ambrosia and Its Effects on Tomato Plant Growth" Journal of Fungi 11, no. 12: 870. https://doi.org/10.3390/jof11120870

APA Style

Jiang, Y., Mehnaz, N., Song, B., Sun, M., Yang, L., Li, X., Li, Y., Wang, L., Wang, Z., Dong, Y., & Ma, L. (2025). Isolation and Identification of Endophytic Chaetomium sp. Strain V3 from Ambrosia and Its Effects on Tomato Plant Growth. Journal of Fungi, 11(12), 870. https://doi.org/10.3390/jof11120870

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