Broad-spectrum antimicrobial activity of volatile organic compounds from endophytic Pseudomonas putida BP25 against diverse plant pathogens
| Autor: | Rajamma Suseelabhai, Aundy Kumar, Santhosh J. Eapen, Valiya Nadakkakath Agisha, Neelam Sheoran |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
fungi food and beverages Biology Antimicrobial biology.organism_classification 01 natural sciences Endophyte Plant disease Pseudomonas putida 010602 entomology Broad spectrum Insect Science Pepper Botany human activities Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Biocontrol Science and Technology. 29:1069-1089 |
| ISSN: | 1360-0478 0958-3157 |
| DOI: | 10.1080/09583157.2019.1657067 |
| Popis: | Black pepper endophytic Pseudomonas putida BP25 produced diverse antimicrobial volatile organic compounds having potential for plant disease management. Chemically synthesised volatiles such as 2, 5-dimethyl pyrazine; 2-methyl pyrazine; dimethyl trisulphide; 2-ethyl 5-methyl pyrazine; and 2-ethyl 3, 6-dimethyl pyrazine showed inhibitory activity against oomycete pathogens, Phytophthora capsici & Pythium myriotylum; fungal pathogens, Rhizoctonia solani, Colletotrichum gloeosporioides, Athelia rolfsii, Gibberella moniliformis & Magnaporthe oryzae; bacterial pathogen, Ralstonia pseudosolanacearum and plant parasitic nematode, Radopholus similis. Among them, dimethyl trisulphide completely inhibited oomycete and fungal pathogens as well as R. similis at a concentration of 2.65 µg cm−3 under in vitro conditions. Pyrazines suppressed Phytophthora lesions on shoot cuttings of black pepper upon in planta volatile treatment. Dimethyl trisulphide was the only compound that exhibited soil fumigant activity against P. capsici, R. solani and A. rolfsii (6.25 µg cm−3), C. gloeosporioides and G. moniliformis (12.5 µg cm−3), and R. similis (50 µg cm−3). Altogether, endophytic Pseudomonas putida BP25 and its volatile organic compounds offer an alternative strategy for eco-friendly disease management in agriculture. |
| Databáze: | OpenAIRE |
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