Results 61 to 70 of about 8,420 (205)

Nuclear, mitochondrial and plastid gene phylogenies of Dinophysis miles (Dinophyceae): evidence of variable types of chloroplasts.

open access: yesPLoS ONE, 2011
The Dinophysis genus is an ecologically and evolutionarily important group of marine dinoflagellates, yet their molecular phylogenetic positions and ecological characteristics such as trophic modes remain poorly understood.
Dajun Qiu   +3 more
doaj   +1 more source

Comparison of transcriptional activity profiling by metabolic labeling or nuclear RNA sequencing

open access: yesThe Plant Journal, Volume 123, Issue 3, August 2025.
Significance Statement A uracil analog, EU, can be incorporated in vivo into newly synthesized RNA during normal transcription. In maize root tips, we found the entire population of nuclear RNA is remarkably similar in composition to newly synthesized RNA, but both differ substantially from cellular RNA, which is largely of cytoplasmic origin.
E. E. Wear   +5 more
wiley   +1 more source

Dientamoeba fragilis diagnosis by fecal screening: relative effectiveness of traditional techniques and molecular methods

open access: yesJournal of Infection in Developing Countries, 2018
Introduction: Dientamoeba fragilis, an intestinal trichomonad, occurs in humans with and without gastrointestinal symptoms. Its presence was investigated in individuals referred to Milad Hospital, Tehran.
Negin Hamidi   +4 more
doaj   +1 more source

Organization and expression analysis of 5S and 45S ribosomal DNA clusters in autotetraploid Carassius auratus

open access: yesBMC Ecology and Evolution, 2021
Background Autotetraploid Carassius auratus (4n = 200, RRRR) (abbreviated as 4nRR) is derived from whole genome duplication of Carassius auratus red var. (2n = 100, RR) (abbreviated as RCC).
Chun Zhao   +10 more
doaj   +1 more source

Lilium pseudonanum (Liliaceae), a Rare and Cryptic Species From Southeast Xizang, China

open access: yesEcology and Evolution, Volume 15, Issue 7, July 2025.
Lilium pseudonanum is a newly identified, critically endangered species endemic to the eastern Himalayas, distinguished from L. nanum through genomic evidence despite its morphological similarity. Genetic analyses reveal a complex hybrid origin involving chloroplast capture and nuclear introgression, while ecological niche modeling predicts future ...
Xiaojuan Chen, Yumei Yuan, Yundong Gao
wiley   +1 more source

Identification of causal agent of blossom blight of loquat in Zhejiang Province, China

open access: yes浙江大学学报. 农业与生命科学版, 2009
The blossom blight of loquat occurred severely in 2007 in loquat orchards in Deqing County, Jiaxing District, Zhejiang Province of China, causing the flower spike wilt and death of loquat. To identify the causal agent, six Botrytis sp.
SUN Hu   +3 more
doaj   +1 more source

Conserved Organisation of 45S rDNA Sites and rDNA Gene Copy Number among Major Clades of Early Land Plants. [PDF]

open access: yesPLoS ONE, 2016
Genes encoding ribosomal RNA (rDNA) are universal key constituents of eukaryotic genomes, and the nuclear genome harbours hundreds to several thousand copies of each species.
Marcela Rosato   +3 more
doaj   +1 more source

The Nucleotide Sequences of 5.8-S Ribosomal RNA from Xenopus laevis and Xenopus borealis [PDF]

open access: yesEuropean Journal of Biochemistry, 1978
1. The nucleotide sequence of 5.8-S rRNA from Xenopus laevis is given; it differs by a C in equilibrium U transition at position 140 from the 5.8-S rRNA of Xenopus borealis. 2. The sequence contains two completely modified and two partially modified residues. 3. Three different 5' nucleotides are found: pU-C-G (0.4) pC-G (0.2) and pG (0.4). 4.
Tom Mathieson, Peter J. Ford
openaire   +3 more sources

Evaluation of RNA extraction methods in rice and their application in expression analysis of resistance genes against Magnaporthe oryzae

open access: yesBiotechnology & Biotechnological Equipment, 2017
Extraction of RNA of high quality and integrity is essential for gene expression studies and all downstream RNA-based techniques. The leaves of 16 merit Malaysian rice varieties were used to isolate total RNA using five different methods.
Parisa Azizi   +7 more
doaj   +1 more source

Three Forms of the 5.8‐S Ribosomal RNA Species in Saccharomyces cerevisiae [PDF]

open access: yesEuropean Journal of Biochemistry, 1974
The existence of three stable forms of the 5.8‐S ribosomal RNA species in Saccharomyces cerevisiae has been demonstrated. The major form constitutes approximately 90% of the total 5.8‐S RNA and the two minor forms each constitute approximately 5%. The nucleotide sequence of the major form begins pA‐A‐A‐Cp.
openaire   +3 more sources

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