A cDNA clone that encodes the large subunit of mitochondrial ribosomal RNA (LSU rRNA) from the liver fluke F. hepatica was isolated and characterized. This RNA molecule is polyadenylated at the 3' end and represents 10% of the poly A+RNA in adult F. hepatica. Fluke LSU rRNA has significant sequence homology to mosquito mitochondria LSU rRNA and is more closely related to the mitochondrial rRNA ...

Rickettsia felis is a human pathogen transmitted by the cat flea, Ctenocephalides felis (Bouché) (str. LSU), as well as an obligate symbiont of the parthenogenic booklouse Liposcelis bostrychophila (Badonnel) (str. LSU-Lb). The influence of genetic variability in these two strains of R. felis on host specialization and fitness and possible resulting differences on infection and transmission kin...

We investigated evolutionary relationships among deuterostome subgroups by obtaining nearly complete large-subunit ribosomal RNA (LSU rRNA)-gene sequences for 14 deuterostomes and 3 protostomes and complete small-subunit (SSU) rRNA-gene sequences for five of these animals. With the addition of previously published sequences, we compared 28 taxa using three different data sets (LSU only, SSU onl...

Hosta longipes (Liliaceae), widely distributed throughout Korea, China, Japan, and eastern Russia, is one of the most popular ornamental perennials in public private gardens. In this species has long been used as a traditional medicine for treatment coughs, phlegm, burns, swelling asthma (Kim et al., 2014), its young leaves are also consumed salad vegetable. June 2016, rust disease was observed...

Cryptococcus flavescens and C. terrestris are phenotypically indistinguishable sister species that belong to the order Tremellales (Tremellomycetes, Basidiomycota) and which may be mistaken for C. laurentii based on phenotype. Phylogenetic separation between C. flavescens and C. terrestris was based on rDNA sequence analyses, but very little is known on their intraspecific genetic variability o...

1Tumor Immunology Program, Stanley S. Scott Cancer Center, Louisiana State University–Health Sciences Center (LSU-HSC), New Orleans; 2Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA; 3Department of Pediatrics, LSU-HSC, New Orleans; 4School of Public Health, Louisiana State University, New Orleans; 5Ochsner Clinic Foundation, New Orleans, LA; and 6Dep...

The corn cyst nematode Heterodera zeae was detected in soil from an organic maize field in northern Greece. In greenhouse studies, reproduction of H. zeae was detected on maize plants (Zeae mays) using soil high in organic matter; the field was under winter fallow at the time of sampling. Maize plants were grown in a greenhouse with soil from the affected field used as inoculum. Females appeare...

Terpenes (isoprenoids), derived from isoprenyl pyrophosphates, are versatile natural compounds that act as metabolism mediators, plant volatiles, and ecological communicators. Divergent evolution of homomeric prenyltransferases (PTSs) has allowed PTSs to optimize their active-site pockets to achieve catalytic fidelity and diversity. Little is known about heteromeric PTSs, particularly the mecha...

The compendium presented here is the immediate successor of the collection of large subunit (LSU; 23S-like) rRNA secondary structures compiled by Gutell and Fox [1] in 1988. As in [1], we present each LSU rRNA sequence in the form of a secondary structure, as it is this structure that is a fundamental aspect of the biological activity of the LSU rRNA molecule. As such, the secondary structure p...

The planktonic diatom genus Pseudo-nitzschia contains several genetically closely related species that can produce domoic acid, a potent neurotoxin known to cause amnesic shellfish poisoning (ASP). An early identification and an adequate monitoring of the potential toxic spp. are necessary. However, effective programs time consuming due, in some cases, cell morphology similarities among species...