scholarly journals STUDIES ON RELATIONSHIP BETWEEN STORAGE FUNGI OF COWPEA AND THEIR COLONIZATION IN THE ROOTS

2021 ◽  
Vol 10 (4) ◽  
Keyword(s):  
Storage Fungi

Free fatty acid content of cacao beans infested with storage fungi

1973 ◽  
Vol 21 (4) ◽  
pp. 665-670 ◽  
Author(s):  
Arthur P. Hansen ◽  
Ronald E. Welty ◽  
Rong-Sen Shen
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Free Fatty Acid Content ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Storage Fungi

FUNGI ASSOCIATED WITH HOT SPOTS IN FARM STORED GRAIN

1962 ◽  
Vol 42 (1) ◽  
pp. 130-141 ◽  
Author(s):  
H. A. H. Wallace ◽  
R. N. Sinha
Keyword(s):  
Hot Spots ◽  
Viable Seed ◽  
Stored Grain ◽  
Surface Layers ◽  
Bulk Heating ◽  
Storage Fungi ◽  
Grain Bulks ◽  
Penicillium Spp ◽  
Water Contents

The temperature, moisture, germination and fungal relationships of normal and heated wheat and oats collected from grain bulks in 13 granaries in Manitoba and Saskatchewan were determined during the falls and winters of 1957–60. Eight bulks were studied in detail. It was found that hot spots could develop anywhere in a bin. Temperatures up to 53 °C. (in winter) were obtained and were usually highest at the base of the bulk. Heating grain was relatively dry (less than 11 per cent) except along the surface. The highest water contents (27 per cent) in the bulks always occurred in the gram along the surface layers. Loss of germinability could occur anywhere in the bulk. Field fungi, such as Alternaria, were common in viable seed, but negligible in heated grain. The seeds in hot spots were predominantly infected by storage fungi, among which Penicillium spp. were the most abundant, even in relatively dry grain at the 6-foot depth. Other fungi commonly found were Aspergillus spp., especially A. flavus Link, A. fumigatus Fresenius, A. versicolor (Vuillemin) Tiraboschi and Absidia spp. Actinomycetes (Streptomyces) were common in some heating grain bulks.

scholarly journals EFFECT OF PLANT EXTRACTS ON SPORULATION AND SPORE GERMINATION OF STORED MELON SEED FUNGI

2014 ◽  
Vol 1 (1) ◽  
pp. 21-29
Author(s):  
Amadi E. ◽  
Deleke E. ◽  
Olahan G. ◽  
Garuba T. ◽  
Adebola M.O.
Keyword(s):  
Plant Extracts ◽  
Spore Germination ◽  
Fusarium Species ◽  
Phytochemical Screening ◽  
Nutrient Contents ◽  
Melon Seed ◽  
Storage Fungi ◽  
Test Organisms ◽  
Melon Seeds

Frequently, stored melon seeds fail to preserve to their time of use. Storage fungi invade these seeds and cause their deterioration. A study was, therefore, carried out to determine the effect of guava (Psidiumguajava L.) leaf and ginger (Zingiberofficinale) rhizome extracts on the sporulation and spore germination of the invading seed fungi.Dried leaves and rhizomes were ground in sterile mortar, filtered through a wire sieve and then extracted usingthree different solvents. Results revealed that both extracts hindered sporulation and spore germination in the four fungi tested namely: Aspergillusflavus, A. niger, Rhizopusstolonifer and Fusarium species. The effect of the extracts on the test organisms increased with concentration of the extracts. Phytochemical screening confirmed the presence of alkaloids, saponins, lipids,tannins, flavonoids, and steroids. A reduction in nutrient contents was also observed in infested melon seeds. These results are significant and would serve as a template for planning the control of storage fungi in melon seeds in particular and other crop produce in general.

scholarly journals Phytosanitary Quality of Genotypes of Wheat Seeds Used Northern Paraná State

2020 ◽  
Vol 12 (6) ◽  
pp. 57
Author(s):  
Jacqueline Dalbelo Puia ◽  
Leandro Camargo Borsato ◽  
Marilize Cristina Gonçalves de Oliveira ◽  
Adriano Thibes Hoshino ◽  
Marcelo Giovanetti Canteri ◽  
...  
Keyword(s):  
Quality Evaluation ◽  
Morphological Characteristics ◽  
Storage Fungi ◽  
Health Quality ◽  
Alternaria Sp ◽  
Low Incidence ◽  
Aspergillus Sp ◽  
Rhizopus Sp ◽  
Wheat Seeds

Wheat seeds can be infested and/or infected by microorganisms that might cause deterioration of this propagation structure. The aim of this study was to evaluate the health quality of sixteen wheat genotypes grown in northern Paraná. Therefore, seeds of each genotype were submitted to the blotter test with 16 repetitions, 400 seeds per sample, for phytosanitary quality evaluation. The identification of the fungi was performed based on their morphological characteristics and quantified data. The results revealed variations in incidence, with 20 fungi genera in the analyzed samples. The fungi Rhizopus sp., Aspergillus sp., Penicillium sp. and Bipolaris sp. were found in 100% of the analyzed samples, while Mucor sp. and Alternaria sp. were in 89% and 78% of the samples, respectively. The main pathogens that cause diseases in the aerial part of wheat were not found, or were low incidence in all materials analyzed. The pathogens with the highest incidence associated with wheat seeds were groups of storage fungi and known to produce mycotoxins.

Development of Granary Weevils and Storage Fungi in Columns of Wheat—II1

1960 ◽  
Vol 53 (3) ◽  
pp. 375-380 ◽  
Author(s):  
C. M. Christensen ◽  
A. C. Hodson
Keyword(s):  
Storage Fungi ◽  
And Storage

scholarly journals The role of mycotoxins in pig reproduction: a review

2010 ◽  
Vol 54 (No. 12) ◽  
pp. 565-576 ◽  
Author(s):  
A. Kanora ◽  
D. Maes
Keyword(s):  
Clinical Symptoms ◽  
Negative Impact ◽  
Ergot Alkaloids ◽  
Daily Practice ◽  
Reproductive Failure ◽  
Farm Animals ◽  
Herd Health ◽  
Storage Fungi ◽  
Raising Awareness

Mycotoxins are commonly present in feed for farm animals. Sows and gilts are highly susceptible to mycotoxins. This article presents a review describing the main mycotoxins encountered in pig feed which have a negative impact on sow fertility and reproduction. Consumption of feed that is contaminated with these mycotoxins may cause a variety of symptoms, depending on the type of mycotoxin, quantity and duration of exposure, as well as the health status and condition of the animal at the time of exposure. Two types of fungi are recognized, field fungi and storage fungi. Field fungi such as <I>Fusarium</I> spp., <I>Aspergillus</I> spp. and <I>Claviceps</I> spp. may produce toxins that lead to disturbed reproductive performance. Storage fungi occur if the humidity during storage is too high. In daily practice, the symptoms related to mycotoxicosis can occur at toxin concentrations below the detection limit. Knowledge of the effects of mycotoxins is expanding rapidly. Mycotoxins may still be present in feedstuffs despite negative analytical findings and because of the presence of hot spots in feed and or feedstuffs. Clinical symptoms can be very pronounced, making the diagnosis for the practitioner quite easy but in many cases the symptoms are vague and not at all present at herd level on a regular basis. The practitioner is in the first line of raising awareness in all parties whenever the first indication exists of a possible mycotoxicosis problem causing reproductive failure in breeding pigs. The problems can be resolved only if all parties involved in pig herd health take the necessary preventive measures and actions. The main toxins causing reproductive failure discussed in this article are aflatoxins, ergot alkaloids, trichothecenes and zearalenone.

Evaluation of a Fluorodensitometric Method for Analysis of Ergosterol as a Fungal Marker in Compound Feeds

1999 ◽  
Vol 62 (6) ◽  
pp. 686-690 ◽  
Author(s):  
J. D. BAILLY ◽  
P. LE BARS ◽  
A. PIETRI ◽  
G. BENARD ◽  
J. LE BARS
Keyword(s):  
Essential Role ◽  
Limit Of Detection ◽  
Fungal Contamination ◽  
Good Marker ◽  
Storage Fungi ◽  
Quantitative Development ◽  
Tlc Plates ◽  
Mixed Feeds ◽  
Layer Chromatography ◽  
Tlc Separation

Ergosterol is the principal sterol of fungi and plays an essential role as a component of the cell membrane and other cell constituents. This molecule is considered a good marker of fungal contamination in foods and feeds. This paper reports a rapid and sensitive method to test ergosterol content in compound feeds based on fluorodensitometry after thin-layer chromatography (TLC) separation. This method involves a thermal treatment of TLC plates that leads to the formation of a highly fluorescent ergosterol derivative. Such a dosage allows ergosterol testing in any naturally contaminated samples (limit of detection: 1 ppm of ergosterol) and gives results in close agreement with high-pressure liquid chromatography determination. Moreover, values obtained on mixed feeds for animals at different steps of fungal contamination are linked to quantitative development of storage fungi, evaluated by mycological technique, reinforcing the interest of a rapid method for measuring this fungal marker.

Sign in / Sign up

Export Citation Format

Share Document