Characterization of Brazilian Cordyceps fumosorosea isolates: Conidial production, tolerance to ultraviolet-B radiation, and elevated temperature

Rojas, Víctor Manuel Arévalo; Iwanicki, Natasha Sant ́Anna; D’Alessandro, Celeste Paola; Fatoretto, Maíra Blumer; Demétrio, Clarice Garcia Borges; Delalibera, Ítalo

doi:10.1016/j.jip.2023.107888

Cited by 5 publications

(2 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Brown and Smith [51], colonies of C. farinosa grew slowly at 10-14 • C, with a higher growth rate at 24 • C. At 27 • C, its slowdown was observed, with a complete lack of growth at 37 • C. In turn, Ayysamy and Baskaran [52] report that the optimum temperature for colony growth of the C. farinosa strain they studied was 25 • C, with smaller colonies formed at 20 • C and the smallest at 30 • C. The germination process of C. farinosa spores was best at 20 • C and 25 • C. In our study, we found that after 24 h, spore germination of the investigated fungal species was the most intense at 25 • C. According to Tian et al [53], the temperature of 26 • C was most favorable for the conidial germination of C. fumosorosea and for the infection of Bemisia tabaci Genadius 2nd instar nymphs. Rojas et al [54] found that all Brazilian isolates of C. fumosorosea showed a fast reduction in germination during the first 30 min of exposure to 45 • C.…”

Section: Discussionmentioning

confidence: 99%

Temperature Requirements for the Colony Growth and Conidial Germination of Selected Isolates of Entomopathogenic Fungi of the Cordyceps and Paecilomyces Genera

Tkaczuk,

Majchrowska-Safaryan

2023

Agriculture

View full text Add to dashboard Cite

The aim of the study was to determine the effect of temperature on the colony growth and conidia germination of selected species of entomopathogenic fungi in the genus Cordyceps (C. farinosa, C. fumosorosea and C. coleopterorum) and one isolate of Paecilomyces suffultus. In the first part of the experiment, selected isolates were grown on Sabouraud (SDA) medium at six temperatures: 5, 10, 15, 20, 25 and 30 °C. Colony growth was observed every 3 days until day 18, by measuring the colony diameter. In the second part of the experiment, slides with an SDA medium and spores were placed in incubators with the above temperature and observations on conidia germination were carried out after 24 and 48 h. The results revealed that the thermal optimum for colony growth of the fungal isolates was within the temperature range of 15 °C and 25 °C. The optimum temperature for the growth of P. suffultus colonies was 15 °C, with 20 °C for C. farinosa and C. coleopterorum. The highest thermal requirements were demonstrated by the C. fumosorosea, which developed best at 25 °C. Cordyceps farinosa and C. fumosorosea developed in a wider temperature range, from 5 °C to 30 °C. In contrast, growth of C. coleopterorum and P. suffultus colonies was observed only at temperatures between 10 °C and 25 °C. After 24 h, spore germination of the fungal species was most intense at 25 °C. After both 24 and 48 h, the temperature of 5 °C stopped the spore germination of all fungal species, and in the case of C. farinosa and C. fumosorosea no germination was also found at 30 °C. This study on the effect of temperature on the growth and spore germination of the species C. coleopterorum and P. suffultus is the first research of its type. The fungal isolates tested in this work in terms of thermal requirements have shown high pathogenicity in relation to selected plant pests in previous studies, which indicates their potential usefulness in IPM programs.

show abstract

Section: Discussionmentioning

confidence: 99%

Temperature Requirements for the Colony Growth and Conidial Germination of Selected Isolates of Entomopathogenic Fungi of the Cordyceps and Paecilomyces Genera

Tkaczuk,

Majchrowska-Safaryan

2023

Agriculture

View full text Add to dashboard Cite

show abstract

“…Cordyceps tenuipes are widely used as a raw material in functional foods in Japan and South Korea, because of their important immune-regulatory, antitumor, analgesic, antibacterial, antimalaria, and other pharmacological effects [ 2 ]. Cordyceps fumosorosea are an important environmentally safe alternative to chemical pesticides for the interspecific transmission and biological control of pest insects [ 3 , 4 ]. One of the best-known edible and medicinal cordycipitoid fungi is C. militaris ; it has been used in East Asian countries, including China, Korea, and Japan, for many years and it is currently widely used in Western countries [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Molecular Phylogeny and Morphology Reveal Cryptic Species in the Cordyceps militaris Complex from Vietnam

Wang

Dong

Luo

et al. 2023

JoF

View full text Add to dashboard Cite

The Cordyceps militaris complex, which is a special group in the genus Cordyceps, is rich in species diversity and is widely distributed in nature. Throughout the investigations of arthropod-pathogenic fungi in the national reserves and in Vietnam parks, collections of C. militaris attacking lepidopteran pupae or larvae were located in the soil and on the leaf litter. The phylogenetic analyses of the combined nrSSU, nrLSU, TEF, RPB1, and RPB2 sequence data indicated that the fungal materials collected in Vietnam belonged to C. militaris and two hidden species in the C. militaris complex. The phylogenetic analyses and morphological comparisons presented here strongly supported the descriptions of C. polystromata and C. sapaensis as new taxa as well as C. militaris as a known species. The morphological characteristics of 11 species in the C. militaris complex, which included two novel species and nine known taxa, were also compared.

show abstract

Improvement of the entomopathogenic fungus Cordyceps javanica efficacy against Diaphorina citri (Hemiptera: Liviidae) under ultraviolet-B radiation and lower relative air humidity provided by oil formulations

Conceschi,

Iwanicki,

de Andrade Moral

et al. 2024

BioControl

View full text Add to dashboard Cite

Characterization of Brazilian Cordyceps fumosorosea isolates: Conidial production, tolerance to ultraviolet-B radiation, and elevated temperature

Cited by 5 publications

References 46 publications

Temperature Requirements for the Colony Growth and Conidial Germination of Selected Isolates of Entomopathogenic Fungi of the Cordyceps and Paecilomyces Genera

Temperature Requirements for the Colony Growth and Conidial Germination of Selected Isolates of Entomopathogenic Fungi of the Cordyceps and Paecilomyces Genera

Molecular Phylogeny and Morphology Reveal Cryptic Species in the Cordyceps militaris Complex from Vietnam

Improvement of the entomopathogenic fungus Cordyceps javanica efficacy against Diaphorina citri (Hemiptera: Liviidae) under ultraviolet-B radiation and lower relative air humidity provided by oil formulations

Contact Info

Product

Resources

About