Effects of middle-viscosity chitosan on Ramularia cercosporelloides

E. A. Quintana-Obregón; M. Plascencia-Jatomea; R. I. Sánchez-Mariñez; A. Burgos-Hernandez; G. A. González-Aguilar; J. Lizardi-Mendoza; M. O. Cortez-Rocha

doi:10.1016/j.cropro.2010.08.018

Effects of middle-viscosity chitosan on Ramularia cercosporelloides

E. A. Quintana-Obregón^*, M. Plascencia-Jatomea, R. I. Sánchez-Mariñez, A. Burgos-Hernandez, G. A. González-Aguilar, J. Lizardi-Mendoza, M. O. Cortez-Rocha

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The inhibitory properties of middle-viscosity Chitosan on the growth of fungus Ramularia cercosporelloides were studied in vitro. The inhibitory concentration that delayed 50% of the radial growth (IC₅₀) was 3.4 g l^-1 for middle-viscosity Chitosans with molecular weights of about 133 and 187 kDa (middle molecular weight) dissolved in lactic and acetic acids, respectively. At 96 h of incubation and under the same growing conditions, inhibitions of 91.79% and 73.13% of the radial growth of the fungus were observed when 3.4 g l^-1 of Chitosan was dissolved in 0.05 M acetic and 0.05 M lactic acid, respectively. The biomass production was significantly lower than that observed in the controls at 72 h. Based on these in vitro results; Chitosan could be a good alternative to control the disease caused by R. cercosporelloides on safflower.

Original language	English
Pages (from-to)	88-90
Number of pages	3
Journal	Crop Protection
Volume	30
Issue number	1
DOIs	https://doi.org/10.1016/j.cropro.2010.08.018
State	Published - Jan 2011

Bibliographical note

Funding Information:
The study was funded by the Mexican Council for Science and Technology (CONACyT) through the projects 58249 and 53493 J1 at the University of Sonora and for the scholarship for postgraduate studies to E.A. Quintana-Obregón.

Keywords

Antifungal
Biomass production
Carthamus tinctorius
Ramularia cercosporelloides

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10.1016/j.cropro.2010.08.018

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title = "Effects of middle-viscosity chitosan on Ramularia cercosporelloides",

abstract = "The inhibitory properties of middle-viscosity Chitosan on the growth of fungus Ramularia cercosporelloides were studied in vitro. The inhibitory concentration that delayed 50% of the radial growth (IC50) was 3.4 g l-1 for middle-viscosity Chitosans with molecular weights of about 133 and 187 kDa (middle molecular weight) dissolved in lactic and acetic acids, respectively. At 96 h of incubation and under the same growing conditions, inhibitions of 91.79% and 73.13% of the radial growth of the fungus were observed when 3.4 g l-1 of Chitosan was dissolved in 0.05 M acetic and 0.05 M lactic acid, respectively. The biomass production was significantly lower than that observed in the controls at 72 h. Based on these in vitro results; Chitosan could be a good alternative to control the disease caused by R. cercosporelloides on safflower.",

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note = "Funding Information: The study was funded by the Mexican Council for Science and Technology (CONACyT) through the projects 58249 and 53493 J1 at the University of Sonora and for the scholarship for postgraduate studies to E.A. Quintana-Obreg{\'o}n.",

year = "2011",

month = jan,

doi = "10.1016/j.cropro.2010.08.018",

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AU - Quintana-Obregón, E. A.

AU - Plascencia-Jatomea, M.

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AU - Burgos-Hernandez, A.

AU - González-Aguilar, G. A.

AU - Lizardi-Mendoza, J.

AU - Cortez-Rocha, M. O.

N1 - Funding Information: The study was funded by the Mexican Council for Science and Technology (CONACyT) through the projects 58249 and 53493 J1 at the University of Sonora and for the scholarship for postgraduate studies to E.A. Quintana-Obregón.

PY - 2011/1

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N2 - The inhibitory properties of middle-viscosity Chitosan on the growth of fungus Ramularia cercosporelloides were studied in vitro. The inhibitory concentration that delayed 50% of the radial growth (IC50) was 3.4 g l-1 for middle-viscosity Chitosans with molecular weights of about 133 and 187 kDa (middle molecular weight) dissolved in lactic and acetic acids, respectively. At 96 h of incubation and under the same growing conditions, inhibitions of 91.79% and 73.13% of the radial growth of the fungus were observed when 3.4 g l-1 of Chitosan was dissolved in 0.05 M acetic and 0.05 M lactic acid, respectively. The biomass production was significantly lower than that observed in the controls at 72 h. Based on these in vitro results; Chitosan could be a good alternative to control the disease caused by R. cercosporelloides on safflower.

AB - The inhibitory properties of middle-viscosity Chitosan on the growth of fungus Ramularia cercosporelloides were studied in vitro. The inhibitory concentration that delayed 50% of the radial growth (IC50) was 3.4 g l-1 for middle-viscosity Chitosans with molecular weights of about 133 and 187 kDa (middle molecular weight) dissolved in lactic and acetic acids, respectively. At 96 h of incubation and under the same growing conditions, inhibitions of 91.79% and 73.13% of the radial growth of the fungus were observed when 3.4 g l-1 of Chitosan was dissolved in 0.05 M acetic and 0.05 M lactic acid, respectively. The biomass production was significantly lower than that observed in the controls at 72 h. Based on these in vitro results; Chitosan could be a good alternative to control the disease caused by R. cercosporelloides on safflower.

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KW - Biomass production

KW - Carthamus tinctorius

KW - Ramularia cercosporelloides

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DO - 10.1016/j.cropro.2010.08.018

M3 - Artículo

SN - 0261-2194

VL - 30

SP - 88

EP - 90

JO - Crop Protection

JF - Crop Protection

IS - 1

ER -

Effects of middle-viscosity chitosan on Ramularia cercosporelloides

Abstract

Bibliographical note

Keywords

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