Sleeping Beauties: Horizontal Transmission via Resting Spores of Species in the Entomophthoromycotina
Many of the almost 300 species of arthropod-pathogenic fungi in the Entomophthoromycotina (Zoopagomycota) are known for being quite host-specific and are able to cause epizootics. Most species produce two main types of spores, conidia and resting spores. Here, we present a review of the epizootiolog...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-08-01
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| Series: | Insects |
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| Online Access: | http://www.mdpi.com/2075-4450/9/3/102 |
| _version_ | 1819144310084337664 |
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| author | Ann E. Hajek Donald C. Steinkraus Louela A. Castrillo |
| author_facet | Ann E. Hajek Donald C. Steinkraus Louela A. Castrillo |
| author_sort | Ann E. Hajek |
| collection | DOAJ |
| description | Many of the almost 300 species of arthropod-pathogenic fungi in the Entomophthoromycotina (Zoopagomycota) are known for being quite host-specific and are able to cause epizootics. Most species produce two main types of spores, conidia and resting spores. Here, we present a review of the epizootiology of species of Entomophthoromycotina, focusing on their resting spores, and how this stage leads to horizontal transmission and persistence. Cadavers in which resting spores are produced can often be found in different locations than cadavers of the same host producing conidia. Resting spores generally are dormant directly after production and require specific conditions for germination. Fungal reproduction resulting from infections initiated by Entomophaga maimaiga resting spores can differ from reproduction resulting from conidial infections, although we do not know how commonly this occurs. Reservoirs of resting spores can germinate for variable lengths of time, including up to several months, providing primary infections to initiate secondary cycling based on conidial infections, and not all resting spores germinate every year. Molecular methods have been developed to improve environmental quantification of resting spores, which can exist at high titers after epizootics. Ecological studies of biological communities have demonstrated that this source of these spores providing primary inoculum in the environment can decrease not only because of germination, but also because of the activity of mycopathogens. |
| first_indexed | 2024-12-22T12:40:06Z |
| format | Article |
| id | doaj.art-eb5564e7f58d48d4b8de95521128b33e |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-12-22T12:40:06Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-eb5564e7f58d48d4b8de95521128b33e2022-12-21T18:25:28ZengMDPI AGInsects2075-44502018-08-019310210.3390/insects9030102insects9030102Sleeping Beauties: Horizontal Transmission via Resting Spores of Species in the EntomophthoromycotinaAnn E. Hajek0Donald C. Steinkraus1Louela A. Castrillo2Department of Entomology, Cornell University, Ithaca, NY 14853, USADepartment of Entomology, University of Arkansas, Fayetteville, AR 72701, USAUSDA ARS, Robert Holley Center for Agriculture & Health, Ithaca, NY 14853, USAMany of the almost 300 species of arthropod-pathogenic fungi in the Entomophthoromycotina (Zoopagomycota) are known for being quite host-specific and are able to cause epizootics. Most species produce two main types of spores, conidia and resting spores. Here, we present a review of the epizootiology of species of Entomophthoromycotina, focusing on their resting spores, and how this stage leads to horizontal transmission and persistence. Cadavers in which resting spores are produced can often be found in different locations than cadavers of the same host producing conidia. Resting spores generally are dormant directly after production and require specific conditions for germination. Fungal reproduction resulting from infections initiated by Entomophaga maimaiga resting spores can differ from reproduction resulting from conidial infections, although we do not know how commonly this occurs. Reservoirs of resting spores can germinate for variable lengths of time, including up to several months, providing primary infections to initiate secondary cycling based on conidial infections, and not all resting spores germinate every year. Molecular methods have been developed to improve environmental quantification of resting spores, which can exist at high titers after epizootics. Ecological studies of biological communities have demonstrated that this source of these spores providing primary inoculum in the environment can decrease not only because of germination, but also because of the activity of mycopathogens.http://www.mdpi.com/2075-4450/9/3/102Entomophthoromycotinainsect pathogenszygosporeazygosporepre-death behavior changefield persistenceepizootics |
| spellingShingle | Ann E. Hajek Donald C. Steinkraus Louela A. Castrillo Sleeping Beauties: Horizontal Transmission via Resting Spores of Species in the Entomophthoromycotina Insects Entomophthoromycotina insect pathogens zygospore azygospore pre-death behavior change field persistence epizootics |
| title | Sleeping Beauties: Horizontal Transmission via Resting Spores of Species in the Entomophthoromycotina |
| title_full | Sleeping Beauties: Horizontal Transmission via Resting Spores of Species in the Entomophthoromycotina |
| title_fullStr | Sleeping Beauties: Horizontal Transmission via Resting Spores of Species in the Entomophthoromycotina |
| title_full_unstemmed | Sleeping Beauties: Horizontal Transmission via Resting Spores of Species in the Entomophthoromycotina |
| title_short | Sleeping Beauties: Horizontal Transmission via Resting Spores of Species in the Entomophthoromycotina |
| title_sort | sleeping beauties horizontal transmission via resting spores of species in the entomophthoromycotina |
| topic | Entomophthoromycotina insect pathogens zygospore azygospore pre-death behavior change field persistence epizootics |
| url | http://www.mdpi.com/2075-4450/9/3/102 |
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