‘Candidatus Paenicardinium endonii’, an endosymbiont of the plant-parasitic nematode Heterodera glycines (Nemata: Tylenchida), affiliated to the phylum Bacteroidetes
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'Candidatus Paenicardinium endonii', an endosymbiont of the plant-parasitic nematode Heterodera glycines (Nemata: Tylenchida), affiliated to the phylum Bacteroidetes.
Bacteria-like endosymbionts of females of the plant-parasitic nematodes Globodera rostochiensis and Heterodera goettingiana and juveniles of Heterodera glycines were first observed during transmission electron microscopy (TEM) studies conducted in the 1970s. These organisms were characterized as being rod-shaped, ranging in size from 0.3 to 0.5 microm in diameter and 1.8 to 3 microm in length a...
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In the plant-parasite nematode Heterodera glycines, 2 forms, in addition to the diploid (9 bivalents), have been isolated and analysed: a tetraploid (18 bivalents) and an aneuploid (14 bivalents, hybrid between the diploid and the tetraploid). Observations on the formation of their karyotypes indicates normal and non-homologous pairing. Eighteen normal synaptonemal complexes (SC) are present in...
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Despite advances in understanding plant responses to nematode infection, little information exists regarding parasitic mechanisms. Recently, it has become possible to perform genetic analysis of soybean cyst nematode. Integration of classic and reverse genetics and genomic approaches for the parasite, with host genetics and genomics will expand our knowledge of nematode parasitism.
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We sequenced the entire coding region of the mitochondrial genome of Heterodera glycines. The sequence obtained comprised 14.9 kb, with PCR evidence indicating that the entire genome comprised a single, circular molecule of approximately 21-22 kb. The genome is the most T-rich nematode mitochondrial genome reported to date, with T representing over half of all nucleotides on the coding strand. ...
متن کاملChanges in FaRP-like peptide levels during development of eggs from the plant-parasitic cyst nematode, Heterodera glycines.
The plant-parasitic cyst nematode Heterodera glycines requires a host plant to complete its life cycle, which involves hatching of infective juveniles that parasitize through root entry. A laboratory population of H. glycines grown on soybean, Glycine max, undergoes a sharp increase in maturity between 5 and 6 weeks in culture, as measured by the proportion of eggs containing well developed pre...
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ژورنال
عنوان ژورنال: International Journal of Systematic and Evolutionary Microbiology
سال: 2006
ISSN: 1466-5026,1466-5034
DOI: 10.1099/ijs.0.64234-0