Morphological and Molecular Characterization of Longidorus americanum n. sp. (Nematoda Longidoridae), a Needle Nematode Parasitizing Pine in Georgia

Morphological and Molecular Characterization of Longidorus americanum n. sp. (Nematoda : Longidoridae), a Needle Nematode Parasitizing Pine in Georgia

We describe and illustrate a new needle nematode, Longidorus americanum n. sp., associated with patches of severely stunted and chlorotic loblolly pine, (Pinus taeda L.) seedlings in seedbeds at the Flint River Nursery (Byromville, GA). It is characterized by having females with a body length of 5.4...

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Bibliographische Detailangaben
Veröffentlicht in:Journal of nematology. - 1969. - 37(2005), 1 vom: 03. März, Seite 94-104
1. Verfasser: Handoo, Z A (VerfasserIn)
Weitere Verfasser: Carta, L K, Skantar, A M, Ye, W, Robbins, R T, Subbotin, S A, Fraedrich, S W, Cram, M M
Format: Aufsatz
Sprache:English
Veröffentlicht: 2005
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article DNA sequencing Georgia Longidorus americanum n. sp. SEM loblolly pine molecular data morphology neddle nematode new species mehr... phylogenetics taxonomy
Beschreibung
Zusammenfassung:We describe and illustrate a new needle nematode, Longidorus americanum n. sp., associated with patches of severely stunted and chlorotic loblolly pine, (Pinus taeda L.) seedlings in seedbeds at the Flint River Nursery (Byromville, GA). It is characterized by having females with a body length of 5.4-9.0 mm; lip region slightly swollen, anteriorly flattened, giving the anterior end a truncate appearance; long odontostyle (124-165 microm); vulva at 44%-52% of body length; and tail conoid, bluntly rounded to almost hemispherical. Males are rare but present, and in general shorter than females. The new species is morphologically similar to L. biformis, L. paravineacola, L. saginus, and L. tarjani but differs from these species either by the body, odontostyle and total stylet length, or by head and tail shape. Sequence data from the D2-D3 region of the 28S rDNA distinguishes this new species from other Longidorus species. Phylogenetic relationships of Longidorus americanum n. sp. with other longidorids based on analysis of this DNA fragment are presented. Additional information regarding the distribution of this species within the region is required
Beschreibung:Date Completed 14.07.2011
Date Revised 20.10.2021
published: Print
Citation Status PubMed-not-MEDLINE
ISSN:0022-300X