Pepper root exudate alleviates cucumber root-knot nematode infection by recruiting a rhizobacterium
- Author
- Tian Tian, Godelieve Gheysen (UGent) , Tina Kyndt (UGent) , Chenmi Mo, Xueqiong Xiao, Yanyan Lv, Haibo Long, Gaofeng Wang and Yannong Xiao
- Organization
- Abstract
- Root-knot nematodes (Meloidogyne spp.) have garnered significant attention from researchers owing to the substantial damage they cause to crops and their worldwide distribution. However, controlling these nematodes is challenging because a limited number of chemical pesticides and biocontrol agents are effective against them. Here, we demonstrate that pepper rotation markedly reduces Meloidogyne incognita infection in cucumber and diminishes the presence of p-hydroxybenzoic acid in the soil, a compound known to exacerbate M. incognita infection. Pepper rotation also restructures the rhizobacterial community, leading to the colonization of the cucumber rhizosphere by two Pseudarthrobacter oxydans strains (RH60 and RH97), facilitated by enrichment of palmitic acid in pepper root exudates. Both strains exhibit high nematocidal activity against M. incognita and have the ability to biosynthesize indoleacetic acid and biodegrade p-hydroxybenzoic acid. RH60 and RH97 also induce systemic resistance in cucumber plants and promote their growth. These data suggest that the pepper root exudate palmitic acid alleviates M. incognita infection by recruiting beneficial P. oxydans to the cucumber rhizosphere. Our analyses identify a novel chemical component in root exudates and reveal its pivotal role in crop rotation for disease control, providing intriguing insights into the keystone function of root exudates in plant protection against root-knot nematode infection.
- Keywords
- WILT DISEASE, PLANT, ACID, RHIZOSPHERE, TOMATO, continuous cropping obstacles, crop rotation, phenolic acids, Pseudarthrobacter oxydans, palmitic acid, root exudates
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01JM9XDKE573CF9GNCFE5EFC95
- MLA
- Tian, Tian, et al. “Pepper Root Exudate Alleviates Cucumber Root-Knot Nematode Infection by Recruiting a Rhizobacterium.” PLANT COMMUNICATIONS, vol. 6, no. 1, 2025, doi:10.1016/j.xplc.2024.101139.
- APA
- Tian, T., Gheysen, G., Kyndt, T., Mo, C., Xiao, X., Lv, Y., … Xiao, Y. (2025). Pepper root exudate alleviates cucumber root-knot nematode infection by recruiting a rhizobacterium. PLANT COMMUNICATIONS, 6(1). https://doi.org/10.1016/j.xplc.2024.101139
- Chicago author-date
- Tian, Tian, Godelieve Gheysen, Tina Kyndt, Chenmi Mo, Xueqiong Xiao, Yanyan Lv, Haibo Long, Gaofeng Wang, and Yannong Xiao. 2025. “Pepper Root Exudate Alleviates Cucumber Root-Knot Nematode Infection by Recruiting a Rhizobacterium.” PLANT COMMUNICATIONS 6 (1). https://doi.org/10.1016/j.xplc.2024.101139.
- Chicago author-date (all authors)
- Tian, Tian, Godelieve Gheysen, Tina Kyndt, Chenmi Mo, Xueqiong Xiao, Yanyan Lv, Haibo Long, Gaofeng Wang, and Yannong Xiao. 2025. “Pepper Root Exudate Alleviates Cucumber Root-Knot Nematode Infection by Recruiting a Rhizobacterium.” PLANT COMMUNICATIONS 6 (1). doi:10.1016/j.xplc.2024.101139.
- Vancouver
- 1.Tian T, Gheysen G, Kyndt T, Mo C, Xiao X, Lv Y, et al. Pepper root exudate alleviates cucumber root-knot nematode infection by recruiting a rhizobacterium. PLANT COMMUNICATIONS. 2025;6(1).
- IEEE
- [1]T. Tian et al., “Pepper root exudate alleviates cucumber root-knot nematode infection by recruiting a rhizobacterium,” PLANT COMMUNICATIONS, vol. 6, no. 1, 2025.
@article{01JM9XDKE573CF9GNCFE5EFC95,
abstract = {{Root-knot nematodes (Meloidogyne spp.) have garnered significant attention from researchers owing to the substantial damage they cause to crops and their worldwide distribution. However, controlling these nematodes is challenging because a limited number of chemical pesticides and biocontrol agents are effective against them. Here, we demonstrate that pepper rotation markedly reduces Meloidogyne incognita infection in cucumber and diminishes the presence of p-hydroxybenzoic acid in the soil, a compound known to exacerbate M. incognita infection. Pepper rotation also restructures the rhizobacterial community, leading to the colonization of the cucumber rhizosphere by two Pseudarthrobacter oxydans strains (RH60 and RH97), facilitated by enrichment of palmitic acid in pepper root exudates. Both strains exhibit high nematocidal activity against M. incognita and have the ability to biosynthesize indoleacetic acid and biodegrade p-hydroxybenzoic acid. RH60 and RH97 also induce systemic resistance in cucumber plants and promote their growth. These data suggest that the pepper root exudate palmitic acid alleviates M. incognita infection by recruiting beneficial P. oxydans to the cucumber rhizosphere. Our analyses identify a novel chemical component in root exudates and reveal its pivotal role in crop rotation for disease control, providing intriguing insights into the keystone function of root exudates in plant protection against root-knot nematode infection.}},
articleno = {{101139}},
author = {{Tian, Tian and Gheysen, Godelieve and Kyndt, Tina and Mo, Chenmi and Xiao, Xueqiong and Lv, Yanyan and Long, Haibo and Wang, Gaofeng and Xiao, Yannong}},
issn = {{2590-3462}},
journal = {{PLANT COMMUNICATIONS}},
keywords = {{WILT DISEASE,PLANT,ACID,RHIZOSPHERE,TOMATO,continuous cropping obstacles,crop rotation,phenolic acids,Pseudarthrobacter oxydans,palmitic acid,root exudates}},
language = {{eng}},
number = {{1}},
pages = {{16}},
title = {{Pepper root exudate alleviates cucumber root-knot nematode infection by recruiting a rhizobacterium}},
url = {{http://doi.org/10.1016/j.xplc.2024.101139}},
volume = {{6}},
year = {{2025}},
}
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