title: Chitosan and oligochitosan enhance the resistance of peach fruit to brown rot.
abstract: The effects of chitosan and oligachitosan on resistance induction of peach fruit against brown rot caused by Monilinia fructicola were investigated. Both chitosan and oligochitosan showed significant effect on controlling this disease. Moreover, chitosan and oligochitosan delayed fruit softening and senescence. The two antifungal substances enhanced antioxidant and defense-related enzymes, such as catalase (CAT), peroxidase (POD), β-1,3-glucanase (GLU) and chitinase (CHI), and they also stimulated the transcript expression of POD and GLU. These findings suggest that the effects of chitosan and oligochitosan on disease control and quality maintenance of peach fruit may be associated with their antioxidant property and the elicitation of defense responses in fruit.
authors.affiliation: College of Food Science & Engineering, Ocean University of China, Qingdao 266003, PR China.
authors.forename: Zengxin
authors.initials: Z
authors.lastname: Ma
authors.forename: Lingyu
authors.initials: L
authors.lastname: Yang
authors.forename: Haixia
authors.initials: H
authors.lastname: Yan
authors.forename: John F
authors.initials: JF
authors.lastname: Kennedy
authors.forename: Xianghong
authors.initials: X
authors.lastname: Meng
mesh_terms: D000935:Antifungal Agents / Q000494:pharmacology*; D002374:Catalase / Q000235:genetics / Q000378:metabolism; D002686:Chitin / Q000031:analogs & derivatives* / Q000494:pharmacology; D002688:Chitinases / Q000235:genetics / Q000378:metabolism; D048271:Chitosan / Q000494:pharmacology*; D060467:Disease Resistance; D063427:Food Quality; D005638:Fruit / Q000201:enzymology / Q000382:microbiology*; D015870:Gene Expression; D004693:Glucan Endo-1,3-beta-D-Glucosidase / Q000235:genetics / Q000378:metabolism; D009844:Oligosaccharides; D009195:Peroxidase / Q000235:genetics / Q000378:metabolism; D010935:Plant Diseases / Q000382:microbiology*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D027861:Prunus / Q000201:enzymology / Q000382:microbiology*; D015003:Yeasts / Q000187:drug effects
chemical_list: D000935:Antifungal Agents; D009844:Oligosaccharides; D010940:Plant Proteins; C493484:oligochitosan; D002686:Chitin; D048271:Chitosan; D002374:Catalase; D009195:Peroxidase; D002688:Chitinases; D004693:Glucan Endo-1,3-beta-D-Glucosidase