Biological and molecular features of Nosema rachiplusiae sp. n., a microsporidium isolated from the neotropical moth Rachiplusia nu (Guenée) (Lepidoptera: Noctuidae)
| Autor: | Alicia Sciocco-Cap, J. D. Arneodo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Argentina Zoology Moths 01 natural sciences Lepidoptera genitalia 03 medical and health sciences Rachiplusia nu Nosema Agronomía reproducción y protección de plantas parasitic diseases Animals DNA Fungal Phylogeny Microscopy General Veterinary biology fungi General Medicine Spores Fungal biology.organism_classification Microsporidium 010602 entomology 030104 developmental biology Infectious Diseases RNA Ribosomal CIENCIAS AGRÍCOLAS Insect Science Larva Microsporidia Ultrastructure Noctuidae Parasitology Polar filament Agricultura Silvicultura y Pesca Ribosomes |
| DOI: | 10.1007/s00436-018-5820-z |
| Popis: | Light, electron microscopy and DNA analyses were performed to characterize a microsporidium infecting Rachiplusia nu larvae from a laboratory rearing in Argentina. Diplokaryotic spores were oval and measured 3.61 ± 0.29 × 1.61 ± 0.14 μM (fresh). The spore wall was composed of an electron-dense exospore and an electron-lucent endospore, ca. 30 nm and 100–120 nm thick, respectively. The polar filament was arranged in a single rank of 10–12 coils (typically 11). Microsporidian cells were found in the cytoplasm, next to the endoplasmic reticulum (especially the prespore stages) and generally surrounded by electron-lucent spaces. The infection was polyorganotropic; the fat body appeared as the most heavily invaded tissue, followed by tracheal matrix and epidermis. A molecular phylogeny based on the small (SSU) and large subunit (LSU) ribosomal RNA genes clearly placed the new isolate within the “Nosema bombycis clade”. Considering both SSU and LSU concatenated partial sequences, the microsporidium from R. nu showed 99.5% nucleotide similarity with N. bombycis and 99.8% with its closest relative, a microsporidium isolated from Philosamia cynthia. According to its genetic and biological features, the R. nu isolate is proposed as the new species Nosema rachiplusiae sp. n., expanding the limited knowledge on microsporidia associated to endemic South-American moths. Fil: Arneodo Larochette, Joel Demián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Microbiología y Zoología Agrícola; Argentina Fil: Sciocco Cap, Alicia. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Microbiología y Zoología Agrícola; Argentina |
| Databáze: | OpenAIRE |
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