TY - JOUR
T1 - Assessment of the effect of chitosan of different molecular weights in controlling Rhizopus rots in tomato fruits
AU - Hernández-Lauzardo, Ana N.
AU - Guerra-Sánchez, María G.
AU - Hernández-Rodríguez, Annia
AU - Heydrich-Pérez, Mayra
AU - Vega-Pérez, Josam
AU - Velázquez-del Valle, Miguel G.
N1 - Funding Information:
The authors are grateful to the National Polytechnic Institute for financial support.
PY - 2012/1
Y1 - 2012/1
N2 - The effect of chitosan was evaluated in three isolates of Rhizopus stolonifer from infected tomatoes that were harvested in different regions of the state of Morelos, México. Changes in the membrane integrity of spores, modifications in pH media and the proteins released were analysed in each isolate against three different molecular weights of chitosan at three fixed concentrations. There was an observed decline in the integrity of spores in the presence of chitosan at all the concentrations evaluated. The protein released was different depending on the isolate, kind of chitosan and used concentration. There was a significant difference in the pH changes on the growth media for all the tested isolates. Chitosan of high molecular weight showed the best results to inhibit the infection caused by R. stolonifer on the tomato fruits. The severity of symptoms of soft rot was not related with the molecular weight of chitosan.
AB - The effect of chitosan was evaluated in three isolates of Rhizopus stolonifer from infected tomatoes that were harvested in different regions of the state of Morelos, México. Changes in the membrane integrity of spores, modifications in pH media and the proteins released were analysed in each isolate against three different molecular weights of chitosan at three fixed concentrations. There was an observed decline in the integrity of spores in the presence of chitosan at all the concentrations evaluated. The protein released was different depending on the isolate, kind of chitosan and used concentration. There was a significant difference in the pH changes on the growth media for all the tested isolates. Chitosan of high molecular weight showed the best results to inhibit the infection caused by R. stolonifer on the tomato fruits. The severity of symptoms of soft rot was not related with the molecular weight of chitosan.
KW - Rhizopus stolonifer
KW - antifungal effect
KW - chitosan
KW - postharvest diseases
UR - http://www.scopus.com/inward/record.url?scp=84857241547&partnerID=8YFLogxK
U2 - 10.1080/03235400903345190
DO - 10.1080/03235400903345190
M3 - Artículo
SN - 0323-5408
VL - 45
SP - 33
EP - 41
JO - Archives of Phytopathology and Plant Protection
JF - Archives of Phytopathology and Plant Protection
IS - 1
ER -