Postharvest Chitosan Treatment Induces Resistance in Potato Against Fusarium sulphureum

Effects of preharvest application of antagonistic yeast combined with chitosan on decay and quality of harvested table grape fruit

“…occurring naturally on table grape berries but lacked a significantly negative impact on the naturally occurring microflora of yeasts and yeast‐like fungi, among which antagonistic micro‐organisms are frequent 2. Pre‐ or postharvest chitosan treatments enhanced disease resistance of the host by regulating defence‐related enzymes such as PAL, chitinase, β‐1,3‐glucanase, POD, PPO and SOD in table grapes,2, 3 litchi,27 mango,28 tomato29, 30 and potato 31. The antagonistic activity of C. laurentii against pathogenic fungi has been widely investigated 16, 32, 33.…”

Chitosan combined with sodium silicate treatment induces resistance against rot caused by Alternaria alternata in postharvest jujube fruit

“…The secondary metabolites produced by this pathway, such as flavonoids, total phenolic compounds and lignin, are of great significance in plant resistance to diseases and formation of a support system (Chen et al, 2014;Dixon et al, 2002). The structure formed by these substances can act as a barrier to restrict activities of invading pathogens (Mohammadi & Kazemi, 2002;Sun et al, 2008). As a speed-limiting enzyme in phenylpropane metabolic pathway, PAL is involved in the synthesis of phenolic compounds, lignin, plant protectin and other antifungal substances, which are closely related to defence reactions in plants (Liu et al, 2005).…”

“…It is reported that chitosan treating can directly inhibit spore germination and mycelial growth on different pathogen such as Alternaria alternata, Colletotrichum gloeosporioides, Botrytis cinerea and Penicillium expansum (Bautista-Baños, Hernández-López, Bosquez-Molina, & Wilson, 2003;Liu, Tian, Meng, & Xu, 2007;Wang et al, 2014). Sun, Bi, Li, Han, and Ge (2008) pointed out that inducing disease resistance in plants with chitosan was related to enzymatic responses and metabolism biosynthesis. Sun, Bi, Li, Han, and Ge (2008) pointed out that inducing disease resistance in plants with chitosan was related to enzymatic responses and metabolism biosynthesis.…”

“…At present, chitosan has been used for controlling postharvest disease of sweet cherry (Feliziani et al, 2013), tomato , fresh cut honey melons (Irkin & Guldas, 2014), jujube and so on. Sun, Bi, Li, Han, and Ge (2008) pointed out that inducing disease resistance in plants with chitosan was related to enzymatic responses and metabolism biosynthesis. In their experiment, chitosan treating and inoculation increased the activity of phenylalanine ammonia lyase (PAL), polyphenol oxidase (PPO) and peroxidase (POD) in potato tissues, as well as the contents of flavonoids and lignin.…”

Comparative analysis of activities of vital defence enzymes during induction of resistance in pearl millet against downy mildew

“…Chitosan-induced resistance against gray mold (Botrytis cinerea) and blue mold (Penicillium expansum) in tomato resulted in increased activities of peroxidase and PPO (Liu et al 2007). Sun et al (2008) reported significant increase in activities of peroxidase and PPO during Chitosan-mediated resistance in potato against Fusarium dry rot (Fusarium sulphureum). BTH treatment to peaches resulted in induced resistance against fruit rot (Penicillium expansum) and showed enhanced activities of PAL, peroxidase and polyphenoloxidase (Liu et al 2005).…”