Effect of chitosan for the control of potato diseases caused by Fusarium species

Abstract

The antifungal activity of chitosan against Fusarium spp. was investigated based on in vitro and in vivo assays, and its possible modes of action were also explored. Chitosan applied at 4.0 g/L of acetic acid‐distilled water solution significantly decreased the mycelial growth of Fusarium oxysporum, Fusarium sambucinum and Fusarium graminearum by 88.4%, 89.0% and 89.8%, respectively. Tuber treatment by chitosan (4.0 g/L) of acetic acid‐distilled water solution, prior to inoculation, reduced dry rot severity induced by F. oxysporum and F. sambucinum by 60.0% and 48.2%, respectively. When tested as plant treatment, potato plants inoculated with Fusarium species, exhibited 33.5%–45.3% less wilting severity as compared to the control. This abiotic treatment improved the phenolic compounds activities and defence‐related enzymes such as peroxidase and polyphenoloxidase in potato tubers inoculated with Fusarium spp. Results clearly demonstrated that chitosan could be explored as an alternative agent to chemical fungicides for the control of tuber dry rot and Fusarium wilt through induction of the plant defence system.

Potential Assessment Multi-Repeating Abiotic/Biotic Motivation Coincide Biofertilizers to Optimize Black Cumin (<i>Nigella sativa</i> L.) Seed Yield Production and Quality

“…Also abiotic/biotic elicitation evoked enhancing SMs production and quality [38] [63] and improvement EO contents in organic agriculture system [64] MO effect on growth and yield of crops and thus can be promoting as a possible sublenent or substitute to inorganic fertilizers [59] these investigations confirmed our results shown in Table 1 and Table 2.…”

Chitosan Hydrochloride Decreases Fusarium graminearum Growth and Virulence and Boosts Growth, Development and Systemic Acquired Resistance in Two Durum Wheat Genotypes

“…In this regard, chitosan was extensively evaluated as a plant biostimulant and antimicrobial agents against different plant pathogens (fungi, bacteria, and viruses), and recently against different Fusarium spp. [ 51 , 52 , 53 , 54 ], and the modes of action have been hypothesized to describe its ability to boost plant growth and defense mechanism [ 39 , 50 ]. Many studies evaluated the antifungal ability of chitosan against FHB pathogens in vitro and in vivo.…”

Chitin- and Chitosan-Based Derivatives in Plant Protection against Biotic and Abiotic Stresses and in Recovery of Contaminated Soil and Water

“…Similarly, chitosan alleviates diseases induced by Fusarium spp. in potato (Solanum tuberosum L.) [15] and by Fusarium oxysporum in rice (Oryza sativa L.) [16]. Interestingly, in Sun Chu Sha mandarin (Citrus reticulata Blanco) plants, hexaacetyl-chitohexaose, a chitin-derived oligosaccharide, affects the vitality of Asian citrus psyllid (Diaphorina citri), the hemipteran vector of Candidatus Liberibacter asiaticus, the pathogen associated with citrus greening disease [17].…”