The involvement of Pseudomonas bacteria in induced systemic resistance in plants (Review)

Jankiewicz, Urszula; Kołtonowicz, M.

doi:10.1134/s0003683812030052

Cited by 33 publications

(24 citation statements)

References 53 publications

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“…In addition, there are indirect mechanisms by which plants with modified lignin biosynthesis could influence each other. Soil organisms have been shown to manipulate plant defense systems (Gehring & Bennett, ; Soto et al ., ; Pineda et al ., ; Jankiewicz & Kołtonowicz, ; Zamioudis & Pieterse, ). In some cases, soil organisms can alter levels of constitutive defense (Gehring & Bennett, ; Pineda et al ., ), whereas, in other cases, they can manipulate inducible defenses (Gehring & Bennett, ; Soto et al ., ; Van der Ent et al ., ; Zamioudis & Pieterse, ).…”

Section: Introductionmentioning

confidence: 99%

Plant lignin content altered by soil microbial community

et al. 2014

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Summary Questions have been raised in various fields of research about the consequences of plants with modified lignin production. As a result of their roles in nutrient cycling and plant diversity, plant–soil interactions should be a major focus of ecological studies on lignin‐modified plants. However, most studies have been decomposition studies conducted in a single soil or in sterile soil. Thus, we understand little about plant–soil interactions in living lignin‐modified plants. In lignin mutants of three different barley (Hordeum vulgare) cultivars and their corresponding wild‐types associated with three different soil microbial communities, we asked: do plant–soil microbiome interactions influence the lignin content of plants?; does a mutation in lignin production alter the outcome of plant–soil microbiome interactions?; does the outcome of plant–soil microbiome interactions depend on host genotype or the presence of a mutation altering lignin production? In roots, the soil community explained 6% of the variation in lignin content, but, in shoots, the soil community explained 21% of the variation in lignin content and was the only factor influencing lignin content. Neither genotype nor mutations in lignin production explained associations with fungi. Lignin content changes in response to a plant's soil microbial community, and may be a defensive response to particular components of the soil community.

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Section: Introductionmentioning

confidence: 99%

Plant lignin content altered by soil microbial community

et al. 2014

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“…Secretion of chitinolytic enzymes by bacteria is considered to be one of the more important mechanisms of biocontrol, which other bacterial metabolites, e.g., 1,3‐glucanases, proteases, antibiotics or siderophores can also participate in . Elimination of plant pests using biological agents is a perfect complement to commonly utilised chemical agents.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of the -NHCOCH 3 acetamide group at the second carbon in the sugar residue ring makes chitin a source of both carbon and nitrogen for many microorganisms [7]. Secretion of chitinolytic enzymes by bacteria is considered to be one of the more important mechanisms of biocontrol, which other bacterial metabolites, e.g., 1,3-glucanases, proteases, antibiotics or siderophores can also participate in [14]. Elimination of plant pests using biological agents is a perfect complement to commonly utilised chemical agents.…”

Section: Introductionmentioning

confidence: 99%

Purification, characterization, and gene cloning of a chitinase from Stenotrophomonas maltophilia N4

Jankiewicz

Brzezinska

2015

J. Basic Microbiol.

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The Stenotrophomonas maltophilia synthesises high-activity chitinase in response to chitin or chitosan induction. The enzyme was purified 8.5 fold and subjected to characterisation. The optimum hydrolysis conditions for this enzyme when using colloidal chitin as substrate were pH 5.6 and temperature of 45 °C. The enzyme demonstrated high thermal stability at 45 °C within 2 h. The studied chitinase exhibited high activity towards colloidal chitin, glycol chitin and chitosan, while it did not hydrolyse glycosidic bonds in carboxymethylcellulose. The enzyme exhibited the highest activity, equalling 90 U/ml, towards Nitrophenyl β-D-N,N',N"-triacetylchitotriose and activity of 37 U/ml towards 4-Nitrophenyl N,N'-diacetyl-β-D-chitobioside. The K(m) value in the presence of the two former substrates was:1.2 and 3.9 mM, respectively, which classifies the studied enzyme as an endochitinase. Cysteine and 2-mercaptoethanol stimulated to a small degree the activity of the chitinase which may indicate the involvement of cysteine residues in the catalysis mechanism. The full length of the nucleotide sequence of this chitinase gene is 2106 bp, which amounts to 702 amino acids.

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“…However salicylic acid was most effective in inducing the enzymes than the microbes. These enzymes are key components of local and induced systemic resistance (Jankiewicz and Kołtonowicz, 2012). Though initially salicylic acid was better than microbes in inducing the defense enzymes, under natural conditions over a longer period of time the antagonistic microbes would build up their populations and induce the plants to produce more of the enzymes, which will not be the case with salicylic acid.…”

Section: Systemic Resistance Induced By Antagonists In Chickpeamentioning

confidence: 99%

Effect of native Trichoderma viride and Pseudomonas fluorescens on the development of Cuscuta campestris on chickpea, Cicer arietinum

Kannan

Kumar

Aditi

et al. 2014

JANS

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Abstract:Cuscuta campestris Yuncker is a serious parasite on several leguminous crops including chickpea in India. Chickpea is an important pulse crop in India and severe incidence of Cuscuta may result in yield loss of about 85.7%. Management of Cuscuta is very difficult because of their intricate relationship with the host, wide host range and lack of resistant genes in the host. Thus induced systemic resistance (ISR) by plant growth promoting microbes (microbial elicitors) may be an effective alternative method for the management of Cuscuta. In the current study, to induce systemic resistance, native isolates of Trichoderma viride Pers. and Pseudomonas fluorescens Flügge were used as seed treatments and foliar spray on chickpea and then infested with C. campestris. Salicylic acid and thiobenzamidazole (synthetic elicitors) were used as standard inducing agents for comparison. Results indicated that fresh seeds of C. campestris germinated rapidly even without scarification and that the germination was not influenced by the proximity of the seeds to the host. Seed treatment followed by foliar sprays with the bioagents and synthetic elicitors induced at 20 and 40 days after sowing (DAS) induced increased production of defense enzymes in chickpea (Cicer arietinum L.) and thus delayed the development (1.8-5 days) and flowering (2.4-4.2 days) of C. campestris. Treatment with both the elicitors also resulted in the enhanced activities of scavengers of enzymes related reactive oxygen species (ROS). Thus the above work would help in the integration of the application of bioagents for effective management of Cuscuta in chickpea.

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The involvement of Pseudomonas bacteria in induced systemic resistance in plants (Review)

Cited by 33 publications

References 53 publications

Plant lignin content altered by soil microbial community

Plant lignin content altered by soil microbial community

Purification, characterization, and gene cloning of a chitinase from Stenotrophomonas maltophilia N4

Effect of native Trichoderma viride and Pseudomonas fluorescens on the development of Cuscuta campestris on chickpea, Cicer arietinum

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