Antifungal effects of chitosan with different molecular weights on in vitro development of Rhizopus stolonifer (Ehrenb.:Fr.) Vuill

Hernández-Lauzardo, Ana Niurka; Bautista‐Baños, Silvia; Valle, Miguel G. Velázquez-del; Méndez-Montealvo, M.G.; Sánchez‐Rivera, Mirna M.; Bello‐Pérez, Luis A.

doi:10.1016/j.carbpol.2007.12.020

Cited by 185 publications

(101 citation statements)

References 21 publications

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“…They reported that a different group of N-(benzyl)chitosan derivatives exhibited high inhibition percentages (> 90%) on the spore germination for F. oxysporum at 1000 mg/l. Hernández-Lauzardo et al (2008) added that the spore germination of R. stolonifer was affected by chitosan of different molecular weights (1.74 × 10 4 , 2.38 × 10 4 and 3.07 × 10 4 g/mol). They found that chitosan of 1.74 × 10 4 g/mol and 2.38 × 10 4 g/mol markedly reduced the spore germination, but no significant effects were found among the tested concentrations (1.0 g/mol, 1.5 g/mol and 2.0 mg/l).…”

Section: Antibacterial Activity Of Chitosan Compoundsmentioning

confidence: 99%

Chemically modified chitosans as antimicrobial agents against some plant pathogenic bacteria and fungi

Rabea¹,

Steurbaut²

2010

Plant Prot. Sci.

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Rabea E.I., Steurbaut W. (2010): Chemically modified chitosans as antimicrobial agents against some plant pathogenic bacteria and fungi. Plant Protect. Sci., 46: 149-158.The antimicrobial activity of eight chemically modified chitosans against plant pathogenic bacteria of crown gall disease agrobacterium tumefaciens and soft mould disease Erwinia carotovora and fungi of early blight disease alternaria alternata, root rot disease Fusarium oxysporum, and damping off disease Pythium debaryanum was investigated. The minimum inhibitory concentration (MIC) of these compounds against the tested bacteria showed that N- (o,o-dichlorobenzyl)chitosan exhibited a high activity against a. tumefaciens and E. carotovora (MIC = 500 and 480 mg/l, respectively). In addition, the antifungal behaviour was investigated in vitro on mycelial growth and spore germination. N-(p-fluorobenzyl)chitosan was the most active against the mycelial growth of a. alternata with an EC 50 of 703.4 mg/l, while the N- (o-chloro,o-fluorobenzyl)chitosan exhibited a high activity against F. oxysporum and P. debaryanum (EC 50 = 641.2 and 155.7 mg/l, respectively). Against the fungal spore germination, all modified chitosans showed a higher inhibition of spore germination than unmodified chitosan. The compound of N-(o,o-di fluorobenzyl)chitosan exhibited a high inhibition percentage against a. alternata. However, N-(o-chlorobenzyl)chitosan and N-(p-chlorobenzyl)chitosan were significantly highly active against the spore germination of F. oxysporum.

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Section: Antibacterial Activity Of Chitosan Compoundsmentioning

confidence: 99%

Chemically modified chitosans as antimicrobial agents against some plant pathogenic bacteria and fungi

Rabea¹,

Steurbaut²

2010

Plant Prot. Sci.

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“…pathogen inhibition (Xu et al, 2007;Hernández-Lauzardo et al, 2008;Badawy & Rabea, 2011;Falcón-Rodríguez et al, 2012) and eliciting plant defence responses (Cabrera et al, 2006;Trotel-Aziz et al, 2006;Falcón-Rodríguez et al, 2011). However, there are not reports regarding the influence of MW on plant growth and yield enhancing under field conditions.…”

Section: Introductionmentioning

confidence: 99%

Chitosans of different molecular weight enhance potato (Solanum tuberosum L.) yield in a field trial

Falcón-Rodríguez

Costales

González-Peña

et al. 2017

Span. j. agric. res.

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Physico-chemical features of chitosan affect its biological activity on plants. In this work, the influence of chitosan molecular mass in potato (Solanum tuberosum L.) yields was investigated. By using chitosan polymers of high (CH-1) and low (CH-2) molecular weight and a hydrolysed chitosan derivative (CHH), two experiments were performed under field conditions to determine the effect of these polymers on yields of two potato varieties, 'Call White' and 'Santana'. For this purpose, the foliar spray of low doses of the derivatives at three cultivation moments was performed and several yield variables were determined at crop harvest. All three chitosan compounds increased the performance variables determined respect to the control, depending on the variable, the dose employed and the mass of the derivative evaluated. In most variables determined, the two lowest doses (200 and 325 mg/ha) provoked the highest increments above control. Chitosans also affected distribution of mass per tuber size, particularly; in 'Santana' variety the two lowest doses enhanced the commercial tuber sizes. Among the polymers, CH-1 caused the greatest increases in performance, while, compared to the polymer, CHH provoked higher yields. In conclusion, foliar application at low doses of high molecular weight and hydrolysed chitosan enhanced potato yield between 15-30%.Additional key words: polymer; oligo-chitosan; plant production; tubers.Correspondence should be addressed to Alejandro B. Falcón-Rodríguez: alfalcon@inca.edu.cu; alfalcon04@yahoo.com

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“…This activity depends on various parameters, including the average degree of acetylation and molecular weight of the chitosans [5][6][7][8], which may be controlled with variable degrees of accuracy. Most significantly, chitosans may also be derivatized with incorporation of acyl and alkyl chains [9,10], and these derivatives have been proven to be even more efficient than their parent chitosans [11].…”

Section: Introductionmentioning

confidence: 99%

Interaction of O-acylated chitosans with biomembrane models: Probing the effects from hydrophobic interactions and hydrogen bonding

Pavinatto¹,

Souza²,

Delezuk³

et al. 2014

Colloids and Surfaces B: Biointerfaces

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Antifungal effects of chitosan with different molecular weights on in vitro development of Rhizopus stolonifer (Ehrenb.:Fr.) Vuill

Cited by 185 publications

References 21 publications

Chemically modified chitosans as antimicrobial agents against some plant pathogenic bacteria and fungi

Chemically modified chitosans as antimicrobial agents against some plant pathogenic bacteria and fungi

Chitosans of different molecular weight enhance potato (Solanum tuberosum L.) yield in a field trial

Interaction of O-acylated chitosans with biomembrane models: Probing the effects from hydrophobic interactions and hydrogen bonding

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