The microsporidium Nosema pyrausta is an important mortality factor of the European corn borer, Ostrinia nubilalis. The present study was aimed at N. pyrausta virulence testing to the beet webworm (BW), Loxostege sticticalis. This agricultural pest, L. sticticalis, was highly vulnerable to N. pyrausta. The parasite's spores were located in salivary glands, adipose tissue, and Malpighian tubules of the infected specimens. Infection was transmitted transovarially through at least 3 laboratory generations, in which BW fitness indices were lower than in the control, and moth emergence and fertility decreased prominently. Transovarial infection was most detrimental to female egg-laying ability, resulting in zero fertility in F3. When propagated in BW, the microsporidium tended to increase its virulence to L. sticticalis, as compared to the Ostrinia isolates. The parasite's ability to infect this host at low dosages and transmit vertically should guarantee its effective establishment and spread within BW populations. In conclusion, N. pyrausta is a promising agent against BW, which is a notorious polyphagous pest in Eurasia.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jip.2021.107675 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Microsporidia-cypovirus interactions during simultaneous infection of the tree defoliator Dendrolimus sibiricus (Lepidoptera: Lasiocampidae).
J Invertebr Pathol
November 2024
All-Russian Institute of Plant Protection, sh. Podbelskogo 3, Pushkin, St. Petersburg 196608, Russia. Electronic address:
The Siberian moth, Dendrolimus sibiricus is a dangerous forest defoliator, the number one pest of boreal forests in Asia. Search for effective and ecologically friendly control measures drives attention to microbial pathogens. Viruses and microsporidia are obligate intracellular parasites widespread in insect populations causing either chronic or acute infections.
View Article and Find Full Text PDFTransgenic overexpression of bmo-miR-6498-5p increases resistance to in the silkworm, .
Appl Environ Microbiol
October 2024
State Key Laboratory of Resource Insects, Southwest University, Chongqing, China.
Article Synopsis
- * Researchers developed a transgenic silkworm line that overexpresses a specific microRNA (miR-6498-5p), resulting in higher survival rates and reduced proliferation of microsporidia in these larvae.
- * Metabolomics analysis revealed 56 metabolites related to amino acid and vitamin metabolism pathways, suggesting that miR-6498-5p enhances host resistance by altering its amino acid metabolism and providing a new approach to combat microsporidia infections.
Nosema bombycis: A remarkable unicellular parasite infecting insects.
J Eukaryot Microbiol
November 2024
State Key Laboratory of Resource Insects, Chongqing Key Laboratory of Microsporidia Infection and Control, Southwest University, Chongqing, China.
Microsporidia are opportunistic fungal-like pathogens that cause microsporidiosis, which results in significant economic losses and threatens public health. Infection of domesticated silkworms by the microsporidium Nosema bombycis causes pébrine disease, for which this species of microsporidia has received much attention. Research has been conducted extensively on this microsporidium over the past few decades to better understand its infection, transmission, host-parasite interaction, and detection.
View Article and Find Full Text PDFMolecular characterization and phylogenetic analyses of MetAP2 gene and protein of isolated from Guangdong, China.
Front Vet Sci
June 2024
Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China.
Background: Pebrine, caused by microsporidium , is a devastating disease that causes serious economic damages to the sericulture industry. Studies on development of therapeutic and diagnostic options for managing pebrine in silkworms are very limited. () of microsporidia is an essential gene for their survival and has been exploited as the cellular target of drugs such as fumagillin and its analogues in several microsporidia spp.
View Article and Find Full Text PDFThe Function of Different Subunits of the Molecular Chaperone CCT in the Microsporidium : NbCCTζ Interacts with NbCCTα.
J Fungi (Basel)
March 2024
College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, China.
Chaperonin containing tailless complex polypeptide 1 (CCT) is a molecular chaperone protein that consists of eight completely different subunits and assists in the folding of newly synthesized peptides. The zeta subunit of CCT is a regulatory factor for the folding and assembly of cytoskeletal proteins as individuals or complexes. In this study, the zeta subunit of (NbCCTζ) is identified for the first time.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!