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Physiological and biochemical changes in tomato cultivar PT-3 with dual inoculation of mycorrhiza and PGPR against root-knot nematode
- Source :
- Symbiosis. 71:175-183
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Arbuscular mycorrhizal fungi (AMF) and plant growth promoting rhizobacteria (PGPR) have potential to control soil-borne diseases including plant-parasitic nematodes. First, the effects of dual inoculation of mycorrhiza (Rhizophagus irregularis) and two stains of pseudomonads (Pseudomonas jessenii strain R62 and Pseudomonas synxantha strain R81) on tomato (Solanum lycopersicum cv. PT-3) growth were tested. Further, the physiological and biochemical changes caused by these beneficial organisms during infection by the root-knot nematode Meloidogyne incognita were studied. The experiment was conducted under glass house conditions and carried out up to one month after nematode inoculation. Plants treated with dual or individual inoculation of AMF and PGPR showed significantly enhanced plant growth and reduced nematode infection. In addition, they exhibited potent activity of phenolics (28 %) and defensive enzymes i.e. peroxidase (PO; 1.26 fold), polyphenyloxidase (PPO; 1.35 fold) and superoxide dismutase (SOD; 1.09 fold) while a significant reduction in malondialdehyde (MDA; 1.63 fold) and hydrogen peroxide (H2O2; 1.30 fold) content was recorded when compared to the nematode-infected plants. These findings indicate the feasibility of AMF and PGPR individually or in combinations as potential biocontrol agents for the management of root-knot nematodes.
- Subjects :
- 0106 biological sciences
Rhizophagus irregularis
biology
fungi
Pseudomonas jessenii
food and beverages
04 agricultural and veterinary sciences
biology.organism_classification
Rhizobacteria
medicine.disease
01 natural sciences
Pseudomonas synxantha
Nematode infection
Botany
040103 agronomy & agriculture
Meloidogyne incognita
medicine
0401 agriculture, forestry, and fisheries
Root-knot nematode
Mycorrhiza
General Agricultural and Biological Sciences
010606 plant biology & botany
Subjects
Details
- ISSN :
- 18787665 and 03345114
- Volume :
- 71
- Database :
- OpenAIRE
- Journal :
- Symbiosis
- Accession number :
- edsair.doi...........3a6a4df3d7db2de861282e84c0ad0078