Field evaluation of Streptomyces rubrogriseus HDZ-9-47 for biocontrol of Meloidogyne incognita on tomato
| Autor: | Shu-sen Liu, Pei Liu, Heng Jian, Jianlong Zhao, Na Jin, Qian Liu, Xue-yan Wang, Wen-jing Li, Hui Xue |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine nematicidal metabolites Streptomyces rubrogriseus Agriculture (General) parasitism Biological pest control Plant Science 01 natural sciences Biochemistry S1-972 03 medical and health sciences Food Animals control efficacy Meloidogyne incognita biocontrol Residue (complex analysis) Ecology biology Hatching food and beverages biology.organism_classification Post transplant Spore Horticulture 030104 developmental biology Agronomy Animal Science and Zoology Agronomy and Crop Science Terra incognita 010606 plant biology & botany Food Science |
| Zdroj: | Journal of Integrative Agriculture, Vol 16, Iss 6, Pp 1347-1357 (2017) |
| ISSN: | 2095-3119 |
| Popis: | Streptomyces rubrogriseus HDZ-9-47, isolated from eggs of Meloidogyne spp., was evaluated as a potential biocontrol agent of Meloidogyne incognita under in vitro and protective field. Microscopic observations showed that HDZ-9-47 parasitized eggs of M. incognita within 7 days. In vitro, the culture filtrate of HDZ-9-47 caused 97.0% mortality of second-stage juveniles (J2s) of M. incognita and inhibited more than 50% egg hatching. In the field, compared with the control, the root-knot index and J2s density in the treatment of drench the broth contained 1012 HDZ-9-47 spores were respectively reduced by 51.1 and 80.7% at 90 days post transplantation, which were better than that in other application doses and methods. In addition, reduction rates of root-knot index and J2s density of the treatment of combined application of HDZ-9-47 with biofumigation was 87.1 and 91.0%, respectively, better than either of HDZ-9-47 or biofumigation used alone or fosthiazate treatment. And tomato yield also increased by 16.1%. Together, our results suggest that HDZ-9-47 could be an effective biocontrol agent of M. incognita, and that application of HDZ-9-47 combined with cabbage residue biofumigation was a promising and sustainable option for M. incognita control. |
| Databáze: | OpenAIRE |
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