Effects of postharvest oligochitosan treatment on fungal diseases and defence responses in Dongxue peach fruit

Food Science and Technology International = Ciencia Y Tecnología De Los Alimentos Internacional
Chen ChenAili Jiang

Abstract

In this study, the effects of oligochitosan treatment on controlling postharvest diseases in Dongxue peach ( Prunus Persica L. Batsch, cv Dongxuemi) were examined and the possible underlying mechanisms were discussed. Results showed that the disease incidence and lesion area in peach fruit inoculated with Monilinia fructicola and Penicillium expansum were all remarkably reduced by oligochitosan treatment. Oligochitosan treatment inhibited spore germination and mycelial growth of the two fungi in vitro. Oligochitosan treatment also induced upregulation of the salicylic acid signalling pathway-related genes (NPR1, PR1 and phenylalanine ammonia lyase) and enhanced the levels of total phenolics, flavonoids and lignin in peach. Meanwhile, enzymatic activities of superoxide dismutase, catalase, polyphenoloxidase, ascorbate peroxidase and phenylalanine ammonia lyase also increased. These findings suggest that the effects of oligochitosan on the disease control of peach fruit may be associated with its direct antimicrobial effects as well as increasing antioxidant, phenylpropanoid metabolism and accumulating antifungal compounds by activating the salicylic acid-dependent pathway.

References

Feb 16, 2002·Methods : a Companion to Methods in Enzymology·K J Livak, T D Schmittgen
Aug 9, 2002·Trends in Plant Science·Jean-Pierre Métraux
Feb 25, 2003·Bioscience, Biotechnology, and Biochemistry·Naomi ObaraOsamu Kodama
Nov 10, 2006·Molecular Biology Reports·Fuyun ZhangYukui Zhang
Apr 1, 2010·Journal of the Science of Food and Agriculture·Lingyu YangXianghong Meng
May 4, 2011·Journal of Integrative Plant Biology·Chuanfu An, Zhonglin Mou
Apr 3, 2013·Carbohydrate Polymers·Zengxin MaXianghong Meng
Dec 3, 2014·Plant Science : an International Journal of Experimental Plant Biology·Dhirendra Kumar

❮ Previous
Next ❯

Citations

Nov 13, 2018·Journal of the Science of Food and Agriculture·Yuan SuiXianghong Meng

❮ Previous
Next ❯

Methods Mentioned

BETA
MDA
PCR

Software Mentioned

SPSS

Related Concepts

Related Feeds

Antifungals (ASM)

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.

Antifungals

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.