Phenolics in the Interaction Pseudomonas Sp./ Dianthus Caryophyllus / Fusarium Oxysporum F.SP. Dianthi

Niemann, Gerard J.; Steijl, Harko

doi:10.17660/actahortic.1994.381.77

Cited by 5 publications

(2 citation statements)

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“…In the similar manner bioagents might have involved in induction of resistance constitutively against the pathogen attack. Several phenolics or phenolics phytoalexins are known to inhibit the growth of phytopathogenic bacteria, and growth retardation by phenolics has been considered an essential factor in polygenic resistance (Mohan and Mahadevan, 1996;Mondal et al, 2001;Niemann et al, 1994). It is easily imagined that these bioagents enhanced the antibacterial products, which restricts the development of challenging seed-borne and pathogenic bacteria.…”

Section: Discussionmentioning

confidence: 99%

Induction of Systemic Resistance by Biocontrol Agents against Bacterial Blight of Cotton Caused by Xanthomonas campestris pv. malvacearum

Raghavendra¹,

Lokesh

Sugunachar

et al. 2013

Int. J. Phytopathol.

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Bioagents such as Trichoderma harzianum, Pseudomonas fluorescens and Bacillus subtilis were isolated from cotton rhizosphere soil and tested individually for their effectiveness in controlling bacterial blight of cotton caused by Xanthomonas campestris pv. malvacearum (Xcm). Talc based formulations were prepared and used for seed treatment at different concentrations for assessing their ability to stimulate plant growth and to control bacterial blight disease. Among bioagents, P. fluorescens and T. harzianum proved to be effective in controlling disease under field conditions. Other than direct action, these bioagents triggered the defense related enzymes involved in synthesis of phenols. Higher activity of peroxidase, phenylalanine ammonia-lyase, polyphenol oxidase and b-1,3-glucanase was observed in P. fluorescens and T. harzianum treated cotton plants after challenge inoculation with Xcm. Seed treatment with these bioagents enhanced the seed germination and growth parameters against blight disease and they also induced systemic resistance in plant for defense mechanisms.

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Section: Discussionmentioning

confidence: 99%

Induction of Systemic Resistance by Biocontrol Agents against Bacterial Blight of Cotton Caused by Xanthomonas campestris pv. malvacearum

Raghavendra¹,

Lokesh

Sugunachar

et al. 2013

Int. J. Phytopathol.

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“…No significant differences between the two treatments could be detected. Several phenolics or phytoalexins are known to inhibit the growth of phytopathogenic bacteria and growth retardation by phenolics has been considered an essential factor in polygenic resistance (Niemann et al 1994;Mohan & Mahadevan 1996;Mondal et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Role of cultivars, physical, chemical and organic treatments in the management of bacterial blight of cotton

Raghavendra

Lokesh

Prakash

2009

Archives Of Phytopathology And Plant Protection

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As a part of a broader program for management of bacterial blight of cotton, the cultivars, the application of bactericides, chemicals and organics were evaluated. Among cultivars JK (42 -44) was found to be resistant and the cultivar LRA-5166 remained highly pathogenic. Seeds of cotton cv. LRA 5166 and JK (42 -44) inoculated with Xanthomonas campestris pv. malvacearum were subjected to different treatments in the greenhouse and field experiments to evaluate seed germination and their resistance to blight and in improving seed germination in cotton, respectively. Hot water treatment inhibited the incidence of bacterial blight to a lesser extent and the germination was also poor. Organic treatments exhibited better performance in increasing germination and in reduction of blight disease, which was significantly superior over all other treatments by 72, 67, 66 and 68%, respectively. Whereas in the case of chemical treatment, the incidence of blight was reduced to a greater extent and germination was affected.

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Accumulation of phytoalexins in leaves of plane tree (Platanus spp.) expressing susceptibility or resistance toCeratocystis fimbriata f. sp.platani

et al. 1995

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Inoculation of leaves of resistant Platanus occidentalis and susceptible Platanus acerifolia leaves with Ceratocystis fimbriata f. sp. platani, the canker stain disease agent, induced foliar necrosis and biosynthesis of two phytoalexins, scopoletin and umbelliferone. Foliar symptoms keep localized and accumulation of coumarin phytoalexins was rapid for incompatible interactions. Necrosis spread widely and accumulation of these phenolic compounds was much later and lower for compatible interactions. The differential response could be used in a genetic improvement program for resistance against canker stain.

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Phenolics in the Interaction Pseudomonas Sp./ Dianthus Caryophyllus / Fusarium Oxysporum F.SP. Dianthi

Cited by 5 publications

References 0 publications

Induction of Systemic Resistance by Biocontrol Agents against Bacterial Blight of Cotton Caused by Xanthomonas campestris pv. malvacearum

Induction of Systemic Resistance by Biocontrol Agents against Bacterial Blight of Cotton Caused by Xanthomonas campestris pv. malvacearum

Role of cultivars, physical, chemical and organic treatments in the management of bacterial blight of cotton

Accumulation of phytoalexins in leaves of plane tree (Platanus spp.) expressing susceptibility or resistance toCeratocystis fimbriata f. sp.platani

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