Streptomyces araujoniae HZ-R6, isolated from Himalayan onion (Allium wallichii Kunth) endorhiza, promotes growth of Chinese chive and protects from grey mould caused by Botrytis cinerea
Streptomyces araujoniae HZ-R6, isolated from Himalayan onion (Allium wallichii Kunth) endorhiza, promotes growth of Chinese chive and protects from grey mould caused by Botrytis cinerea
Chinese chive (Allium tuberosum Rottler ex Spreng.), a perennial herb originating from China, is gaining popularity due to its nutritional values and medicinal properties. Grey mould caused by Botrytis cinerea, inflicts substantial economic damage upon the Chinese chive industry. Streptomyces, a ubiquitous bacterial genus that can be associated with plants, is renowned for its remarkable capability to synthesise an array of bioactive compounds. These compounds have demonstrated significant value in the realm of agricultural applications. Nevertheless, studies emphasised the exploration of eco-friendly management approaches, such as biocontrol microorganisms and plant growth-promoting bacteria (PGPB) specifically for Chinese chive, still subject to restrictions to this day. In our study, 21 endophytic Streptomyces strains, identified by molecular methods and morphological analysis, were isolated from Himalayan onion (Allium wallichii Kunth) collected from Jiucaiping mountain, Guizhou, China. Among them, S. araujoniae HZ-R1, HZ-R3, HZ-R6, HZ-R10, and HZ-S2 illustrated strong antagonistic activity (≥50 per cent of mycelium growth inhibition) against Botrytis cinerea in vitro. Additionally, S. araujoniae HZ-R6 showed remarkable growth-promoting capabilities by directly increasing plant biomass and indirectly enhancing various physiological properties. Leveraging its potential as biostimulant, we assessed the efficacy of S. araujoniae HZ-R6 against B. cinerea on Chinese chives in a greenhouse setting. A statistically significant 43.28% reduction in disease incidence and disease index was observed in the treatment group compared to the control group. Our findings suggests that S. araujoniae HZ-R6 has great potential to be further considered as a biofertilizer or biofungicide for the production of Chinese chives.
Biocontrol, Himalayan onion, Plant growth promotion, Streptomyces araujoniae, grey mould
803-821
Zhou, Xiaohui
58e12130-b24b-41c0-85fc-85cc4bbaa4b0
Ouyang, Hao
17f2bdc0-c467-4ed1-8b23-8de25a4dd0f6
Ghani, Muhammad imran
e55fd3f1-9b8e-4e10-99c5-b7efbb9e6ab4
Hu, Xiaojing
b6163e68-42db-4a89-a339-7b51c67977fb
Cernava, Tomislav
a13d65aa-2529-479a-ba90-69ebbc4ba07f
Chen, Xiaoyulong
02c0a0f6-0927-47d3-80ab-68b70e81c9fb
2025
Zhou, Xiaohui
58e12130-b24b-41c0-85fc-85cc4bbaa4b0
Ouyang, Hao
17f2bdc0-c467-4ed1-8b23-8de25a4dd0f6
Ghani, Muhammad imran
e55fd3f1-9b8e-4e10-99c5-b7efbb9e6ab4
Hu, Xiaojing
b6163e68-42db-4a89-a339-7b51c67977fb
Cernava, Tomislav
a13d65aa-2529-479a-ba90-69ebbc4ba07f
Chen, Xiaoyulong
02c0a0f6-0927-47d3-80ab-68b70e81c9fb
Zhou, Xiaohui, Ouyang, Hao, Ghani, Muhammad imran, Hu, Xiaojing, Cernava, Tomislav and Chen, Xiaoyulong
(2025)
Streptomyces araujoniae HZ-R6, isolated from Himalayan onion (Allium wallichii Kunth) endorhiza, promotes growth of Chinese chive and protects from grey mould caused by Botrytis cinerea.
Biocontrol Science and Technology, 35 (7), .
(doi:10.1080/09583157.2025.2503778).
Abstract
Chinese chive (Allium tuberosum Rottler ex Spreng.), a perennial herb originating from China, is gaining popularity due to its nutritional values and medicinal properties. Grey mould caused by Botrytis cinerea, inflicts substantial economic damage upon the Chinese chive industry. Streptomyces, a ubiquitous bacterial genus that can be associated with plants, is renowned for its remarkable capability to synthesise an array of bioactive compounds. These compounds have demonstrated significant value in the realm of agricultural applications. Nevertheless, studies emphasised the exploration of eco-friendly management approaches, such as biocontrol microorganisms and plant growth-promoting bacteria (PGPB) specifically for Chinese chive, still subject to restrictions to this day. In our study, 21 endophytic Streptomyces strains, identified by molecular methods and morphological analysis, were isolated from Himalayan onion (Allium wallichii Kunth) collected from Jiucaiping mountain, Guizhou, China. Among them, S. araujoniae HZ-R1, HZ-R3, HZ-R6, HZ-R10, and HZ-S2 illustrated strong antagonistic activity (≥50 per cent of mycelium growth inhibition) against Botrytis cinerea in vitro. Additionally, S. araujoniae HZ-R6 showed remarkable growth-promoting capabilities by directly increasing plant biomass and indirectly enhancing various physiological properties. Leveraging its potential as biostimulant, we assessed the efficacy of S. araujoniae HZ-R6 against B. cinerea on Chinese chives in a greenhouse setting. A statistically significant 43.28% reduction in disease incidence and disease index was observed in the treatment group compared to the control group. Our findings suggests that S. araujoniae HZ-R6 has great potential to be further considered as a biofertilizer or biofungicide for the production of Chinese chives.
Text
Final MS version
- Accepted Manuscript
Restricted to Repository staff only until 23 June 2026.
Request a copy
More information
Accepted/In Press date: 30 April 2025
e-pub ahead of print date: 23 June 2025
Published date: 2025
Keywords:
Biocontrol, Himalayan onion, Plant growth promotion, Streptomyces araujoniae, grey mould
Identifiers
Local EPrints ID: 504107
URI: http://eprints.soton.ac.uk/id/eprint/504107
ISSN: 0958-3157
PURE UUID: e989441a-f999-4da8-902d-86ae7cd0021e
Catalogue record
Date deposited: 26 Aug 2025 16:41
Last modified: 18 Oct 2025 02:09
Export record
Altmetrics
Contributors
Author:
Xiaohui Zhou
Author:
Hao Ouyang
Author:
Muhammad imran Ghani
Author:
Xiaojing Hu
Author:
Tomislav Cernava
Author:
Xiaoyulong Chen
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics