Cytological observations of cucumber plants during induced resistance elicited by rhizobacteria

Jeun, Yong Chull; Park, K.S; Kim, C.H; Fowler, W.D; Kloepper, Joseph W.

doi:10.1016/s1049-9644(03)00082-3

Cited by 81 publications

(53 citation statements)

References 41 publications

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“…The mechanisms of plant growth promotion includes phytohormone production (Egamberdiyeva, 2007;Shaharoona et al 2006), asymbiotic N 2 fixation (Salantur et al 2006), production of siderophores, synthesis of antibiotics, enzymes and/or fungicidal compounds (Bharathi et al 2004 andJeun et al 2004;Ahmad et al 2007) and Article solubilization of mineral nutrients (Cattelan et al 1999). Under salinity stress, PGPR have positive effects on plants specifically on germination rate and seedling growth (Kokelis-Burelle et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Effect of Brevibacterium iodinum RS16 and Methylobacterium oryzae CBMB20 Inoculation on Seed Germination and Early Growth of Maize and Sorghum-sudangrass hybrid Seedling under Different Salinity Levels

Kim¹,

Hwang²,

Saravanan³

et al. 2012

Korean Journal of Soil Science and Fertilizer

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Salinity is one of the most relevant abiotic factor limiting crop yield and its net primary productivity. In addition, salinity induces an increased stress ethylene synthesis in plants which, in turn, exacerbate the responses to the stressor. Bacterial single or co-inoculation effect was tested using previously characterized plant growth promoting (PGP) bacteria Brevibacterium iodinum RS16 and Methylobacterium oryzae CBMB20 on maize and sorghum-sudan grass hybrid under different concentrations of NaCl. Non-inoculated maize and sorghum-sudangrass hybrid showed 33.4% and 20.0% reduction in seed germination under highest NaCl (150 mM) level tested. However, under the same NaCl concentration, co-inoculation with B. iodinum RS16 and M. oryzae CBMB20 PGP strains increased the seed germination in maize (16.7%) and sorghumsudangrass hybrid (4.4%). In Gnotobiotic growth pouch experiments conducted for maize and sorghumsudangrass hybrid, co-inoculation of PGP B. iodinum RS16 and M. oryzae CBMB20 mitigated the salinity stress and promoted root length by 22.9% and 29.7%, respectively. Thus the results of this study could help in development of potential bioinoculants that may be suitable for crop production under saline conditions.

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Section: Introductionmentioning

confidence: 99%

Effect of Brevibacterium iodinum RS16 and Methylobacterium oryzae CBMB20 Inoculation on Seed Germination and Early Growth of Maize and Sorghum-sudangrass hybrid Seedling under Different Salinity Levels

Kim¹,

Hwang²,

Saravanan³

et al. 2012

Korean Journal of Soil Science and Fertilizer

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“…Virulent pathogens induce rapid cellular defense responses such as AOS accumulation, callose and phenolic compound deposition, and augmented transcriptions of defense-related responses in plants primed by PGPR (Benhamou et al, 2002;Faize et al, 2004;Jeun et al, 2004;Pare et al, 2005;Park et al, 2002;Verhagen et al, 2010;Whipps, 2001;Yedidia et al, 2003). Besides arresting pathogen proliferation in planta, AOS are involved in cell wall fortification (Olivain et al, 2003) and protein cross-linking, and acts as signaling molecules mediating systemic resistance.…”

Section: Introductionmentioning

confidence: 99%

Priming by Rhizobacterium Protects Tomato Plants from Biotrophic and Necrotrophic Pathogen Infections through Multiple Defense Mechanisms

Ahn

Lee

Kim

et al. 2011

Molecules and Cells

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A selected strain of rhizobacterium, Pseudomonas putida strain LSW17S (LSW17S), protects tomato plants (Lycopersicon esculentum L. cv. Seokwang) from bacterial speck by biotrophic Pseudomonas syringae pv. tomato strain DC3000 (DC3000) and bacterial wilt by necrotrophic Ralstonia solanacearum KACC 10703 (Rs10703). To investigate defense mechanisms induced by LSW17S in tomato plants, transcription patterns of pathogenesis-related (PR) genes and H 2 O 2 production were analyzed in plants treated with LSW17S and subsequent pathogen inoculation. LSW17S alone did not induce transcriptions of employed PR genes in leaves and roots. DC3000 challenge following LSW17S triggered rapid transcriptions of PR genes and H 2 O 2 production in leaves and roots. Catalase infiltration with DC3000 attenuated defense-related responses and resistance against DC3000 infection. Despite depriving H 2 O 2 production and PR1b transcription by the same treatment, resistance against Rs10703 infection was not deterred significantly. H 2 O 2 is indispensable for defense signaling and/or mechanisms primed by LSW17S and inhibition of bacterial speck, however, it is not involved in resistance against bacterial wilt.

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“…The fresh culture and formulations (Talc and Sodium alginate) of P.fluorescens isolate 2, significantly increased seed germination and seedling vigor over the control. Such plant growth promotion activities of P.fluorescens was reported in crops such as, rice, wheat, sorghum pearl millet, tomato, brinjal, chilli, redgram, cucumber and sunflower [25,37,38,39,[21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]. The fresh cultures of the biocontrol agent were found to be best in reducing fusarium wilt under green house conditions.…”

Section: Resultsmentioning

confidence: 92%

“…P.fluorescens isolated from rhizosphere soil samples of tomato were employed against an important seed and soil borne pathogen of tomato, F.oxysporum. P.fluorescens bacteria are important rhizosphere microbes and are efficient in suppressing root and foliar diseases of several plant species [8,9,21,22,[23][24]. Fusarium oxysporum was isolated from infected seeds of PKM I which showed 7% incidence.…”

Section: Resultsmentioning

confidence: 99%

BIOLOGICAL CONTROL OF F. OXYSPORUM f. sp. LYCOPERSICI CAUSING WILT OF TOMATO BY PSEUDOMONAS FLUORESCENS

BB¹,

S²,

AC³

et al. 2011

Int J of Micr Res

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Abstract-Pseudomonas fluorescens is one of the major fungal biocontrol agents found in the soil and the rhizosphere of various crop systems. Ten isolates of P.fluorescens were isolated from rhizosphere soil samples collected from various tomato-growing fields and evaluated for their efficacy in increasing seed quality variables of tomato and in inhibiting the mycelial growth of Fusarium oxysporum. Pseudomonas isolate 2 produced effective results and was selected and mass multiplied. Talc and sodium alginate formulations of mass multiplied using different agents were prepared and evaluated for their effects against fusarium wilt under greenhouse conditions. Fresh cultures of Pf2 isolate was found to increase seedling emergence and reduce fusarium wilt disease incidence when compared to the control and the formulations.

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Cytological observations of cucumber plants during induced resistance elicited by rhizobacteria

Cited by 81 publications

References 41 publications

Effect of Brevibacterium iodinum RS16 and Methylobacterium oryzae CBMB20 Inoculation on Seed Germination and Early Growth of Maize and Sorghum-sudangrass hybrid Seedling under Different Salinity Levels

Effect of Brevibacterium iodinum RS16 and Methylobacterium oryzae CBMB20 Inoculation on Seed Germination and Early Growth of Maize and Sorghum-sudangrass hybrid Seedling under Different Salinity Levels

Priming by Rhizobacterium Protects Tomato Plants from Biotrophic and Necrotrophic Pathogen Infections through Multiple Defense Mechanisms

BIOLOGICAL CONTROL OF F. OXYSPORUM f. sp. LYCOPERSICI CAUSING WILT OF TOMATO BY PSEUDOMONAS FLUORESCENS

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