First Report of Pasteuria sp. Attacking Heterodera glycines in North America
Endospores of a Pasteuria sp. were observed on Heterodera glycines second-stage juveniles and males recovered from soil in microplots in which nematode populations had been declining for several years. Conventional scanning electron microscopy was used to observe and measure endospores on second-sta...
| Veröffentlicht in: | Journal of nematology. - 1969. - 26(1994), 4 Suppl vom: 10. Dez., Seite 612-5 |
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| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
1994
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| Zugriff auf das übergeordnete Werk: | Journal of nematology |
| Schlagworte: | Journal Article Heterodera glycines Pasteuria sp. biological control nematode soybean cyst nematode |
| Zusammenfassung: | Endospores of a Pasteuria sp. were observed on Heterodera glycines second-stage juveniles and males recovered from soil in microplots in which nematode populations had been declining for several years. Conventional scanning electron microscopy was used to observe and measure endospores on second-stage juveniles (J2) of both a race 3 and a race 4 population. Endospores were elipsoidal; those attached to J2 of race 3 measured (X) 4.2 x 3.7 mum with a height of 2.0 mum, and those on race 4 were 4.3 x 3.7 mum with a height of 2.3 mum. Measurements taken under light microscopy indicated that endospores attached to J2 of race 3 were 5.0 x 4.8 mum with a height of 2.2 mum. The velutinous exosporium of the H. glycines-infecting P. nishizawae from Japan was not visible in the Illinois isolate. Differences in endospore morphology and the apparent inability of the Illinois isolate to complete its life cycle in females indicate that the Japanese and Illinois isolates are distinct species of Pasteuria |
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| Beschreibung: | Date Completed 14.07.2011 Date Revised 20.10.2021 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 0022-300X |