Cowpea resistance induced against Fusarium oxysporum f. sp. tracheiphilum by crustaceous chitosan and by biomass and chitosan obtained from Cunninghamella elegans

Berger, Lúcia Raquel Ramos; Stamford, Newton Pereira; Willadino, Lília; Laranjeira, Delson; Lima, Marcos Antônio Barbosa de; Malheiros, Samuel Marcus Montarroyos; Oliveira, Wanderson José de; Stamford, Thayza Christina Montenegro

doi:10.1016/j.biocontrol.2015.09.006

Cited by 51 publications

(37 citation statements)

References 34 publications

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“…The tissues were then rinsed 3 times each one for 10 min in 0.1 M sodium phosphate buffer (pH 7.2), and dehydrated through an ethanol series, 25, 50, 70, 90, and 100% dry, 15 min each step, 2 × 100% (Mahto & Das, ; Parker, Parker, Smith, & Waldron, ; Talbot & White, ; Uwins, Murray, & Gould, ). The preparation process was then followed by chemical drying via HMDS, under a laboratory hood overnight (Berger et al, ; Bray, Bagu, & Koegler, ; Maricle et al, ; Pathan et al, ). Each specimen was mounted onto the aluminum stub using double‐sided sticky carbon tabs, and each surface was gold‐coated to create electrical conductivity.…”

Section: Methodsmentioning

confidence: 99%

Scanning electron microscopy study of microstructure damage and micromechanical behavior of potato tissue by impact during storage

Nikara

Ahmadi

Nia

2018

J Food Process Engineering

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Impact damage of potato occurs during handling, transportation, sorting, and storage. In this research, scanning electron microscopy (SEM) analysis was employed to investigate the micromechanical changes of potato tissue by applying impact levels of 0 (control), 0.032, 0.185, and 0.335 J over a 16‐week storage period. Specific gravity, moisture content, cell turgor pressure, mechanical properties of tissue were determined. The cell section area, cell perimeter, and cell roundness and impact damage were obtained through the analysis of SEM images. The analysis showed a significant correlation between micromechanical properties and physiological changes for impacted potato tissue during the storage (p < .01). With increasing impact energy and storage time, a statistically significant decrease occurred in water content, cell turgor pressure, and microstructural features. Variations in mechanical properties of non‐impacted potato tissue during storage included increased specific gravity and puncture parameters. The interaction between the impact levels and storage time on the impact damage was statistically significant (p < .05), so that a higher impact energy leads to an increase in the impact damage during storage time. It was indicated the largest distorted microstructure with maximum physiological alterations in storage duration. These results would be of great assistance in optimization and design of pressing machines, which are important for the development of the food industry. Practical applications This article examines the microstructural and micromechanical changes in the impacted potato tissue during storage. Moreover, it investigates the importance of controlling potato damage due to dynamic loads during harvest and post‐harvest processes, the role of the impact severity on the damage, and damage spread in tissue during the storage period. The electron microscope images of the impact location are reported in this article, which is helpful for predicting the damage in the potato tissue using finite element simulation.

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Section: Methodsmentioning

confidence: 99%

Scanning electron microscopy study of microstructure damage and micromechanical behavior of potato tissue by impact during storage

Nikara

Ahmadi

Nia

2018

J Food Process Engineering

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“…Similarly, chitosan from C. elegans demonstrated a double action against Fusarium oxysporum f. sp. tracheiphilum in cowpea plants: besides showing direct antifungal activity, it also induced the plant's natural defenses by increasing the activities of enzymes catalase (CAT) and peroxidase (POX) …”

Section: Applications Of Fungal Chitin Chitosan and Chitin/chitosan–mentioning

confidence: 99%

Chitinous polymers: extraction from fungal sources, characterization and processing towards value‐added applications

Araújo

Ferreira

Torres

et al. 2020

J of Chemical Tech & Biotech

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Chitin, chitosan and their complexes with β‐glucan (chitin–glucan complex, CGC, and chitosan–glucan complex, ChGC) are value‐added polysaccharides extracted from the cell‐walls of many fungi. Commercial chitin and its deacetylated form, chitosan, are currently obtained from marine waste material, mostly animal sources (crustaceans and marine invertebrates), through harsh chemical procedures that have low reproducibility due to the variability of the composition of the sources and their seasonal character. These disadvantages are overcome by using fungi as sources of chitinous polymers. The extraction of chitin/chitosan from fungi cell‐walls has the great advantage of yielding products with stable composition and properties, using simpler procedures, with the added benefit of also generating CGC and ChGC, two copolymers that combine the proven properties of chitin/chitosan with those of β‐glucans. Over the last decades, fungal chitinous polymers have been the focus of extensive research that included optimization of the cultivation conditions of a wide range of species and the development of optimized extraction, purification and characterization techniques, as well as the demonstration of the biopolymers' biological properties, which include immunomodulatory, anticancer, antioxidant and antimicrobial activity. Given these properties, several attempts were made to develop applications for them in areas ranging from biomedicine and pharmaceuticals to food and agriculture. Despite their wide range of proven functional properties that include the ability to form different polymeric structures, as well as biological activity, fungal chitinous biopolymers are still underexplored. Nevertheless, these biopolymers hold great potential for development into valuable products or applications that are surely worth further investigation. © 2019 Society of Chemical Industry

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“…Plant pathogenic fungi are economically important agricultural microorganisms, because they induce decay on a very large number of agricultural crops (Berger et al 2016;Soltani Nejad et al 2016a). Plant pathogenic fungi are economically important agricultural microorganisms, because they induce decay on a very large number of agricultural crops (Berger et al 2016;Soltani Nejad et al 2016a).…”

Section: Introductionmentioning

confidence: 99%

Application of Soil‐borne Actinomycetes for Biological Control against Fusarium Wilt of Chickpea (Cicer arietinum) caused by Fusarium solani fsp pisi

Soltanzadeh

Nejad

Bonjar

2016

Journal of Phytopathology

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Black root rot, caused by Fusarium solani f.sp. pisi, is a devastating soil‐borne disease in chickpea in Iran with no effective control measures. With the aim of finding applicable biocontrol agents to alleviate the malady, isolates of Actinomycetes isolated from soil and their antagonistic effect against F. solani f.sp. pisi were evaluated both in vitro and in vivo. More than 100 Actinomycetes isolates were screened for their antifungal activities against the pathogen. The most active isolates were evaluated in greenhouse for their biocontrol performance. Based on the results of dual cultures in screening evaluations, the size of inhibition zone of fungal growth, and the most effective antagonist isolates (S3, S12 and S40) were selected for further studies. Identity of active isolates was determined, in this regard, 16S rDNA of isolates were amplified using universal bacterial primers FD1 and RP2. The PCR products were purified and sequenced. Sequence analysis of 16S rDNA was then performed using NCBI BLAST method. Comparison of the near full length 16S rRNA sequence of isolates to GenBank sequences demonstrated that isolates S3 and S12 were most similar to Streptomyces antibioticus, while isolate S40 was most similar to Streptomyces peruviensis. Biocontrol studies of these isolates in control of the disease in greenhouse significantly decreased the disease severity. Actinomycetes isolate S12 demonstrated the greatest effect in reducing disease than the other two. Results of this research are at preliminary stage for developing biocontrol agents. These data can be utilized as a platform for future studies with the aim of commercializing these biocontrol products and hoping to step towards sustainable agriculture.

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Cowpea resistance induced against Fusarium oxysporum f. sp. tracheiphilum by crustaceous chitosan and by biomass and chitosan obtained from Cunninghamella elegans

Cited by 51 publications

References 34 publications

Scanning electron microscopy study of microstructure damage and micromechanical behavior of potato tissue by impact during storage

Scanning electron microscopy study of microstructure damage and micromechanical behavior of potato tissue by impact during storage

Chitinous polymers: extraction from fungal sources, characterization and processing towards value‐added applications

Application of Soil‐borne Actinomycetes for Biological Control against Fusarium Wilt of Chickpea (Cicer arietinum) caused by Fusarium solani fsp pisi

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