Confirmation of hybridity using GISH and determination of 18S rDNA copy number using FISH in interspecific F1 hybrids of Tecoma (Bignoniaceae)

Genome ◽  
2012 ◽  
Vol 55 (6) ◽  
pp. 437-445 ◽  
Author(s):  
Ryan N. Contreras ◽  
John M. Ruter ◽  
Joann Conner ◽  
Yajuan Zeng ◽  
Peggy Ozias-Akins

Interspecific hybridization in Tecoma Juss. was conducted to develop novel forms for the nursery industry. We report fertile hybrids from the cross T. garrocha Hieron. (pistillate parent) × T. stans (L.) Juss. ex Kunth. Leaf morphology of the F1 hybrids of T. garrocha × T. stans was intermediate between the parents. GISH also confirmed hybridity. The F1 hybrids were successfully backcrossed to both parents and self-pollinated to produce BC and F2 progeny. Tecoma garrocha , T. stans, and T. guarume A. DC. ‘Tangelo’ were self-fertile. The F1 hybrids also were crossed with T. capensis (Thunb.) Lindl. and T. guarume ‘Tangelo’, resulting in three-species hybrids. FISH conducted on F1 hybrids identified four copies of the 18S internal transcribed spacer region. Further analysis using FISH has the potential to provide information on the evolution of Bignoniaceae and the potential role of polyploidy.

Cytokine ◽  
2012 ◽  
Vol 60 (3) ◽  
pp. 593-595 ◽  
Author(s):  
Veronica Tisato ◽  
Lorenzo Monasta ◽  
Gianni Biolo ◽  
Francesco Donatelli ◽  
Paola Secchiero ◽  
...  

1991 ◽  
Vol 37 (1) ◽  
pp. 90-93 ◽  
Author(s):  
Mlchele Petrarulo ◽  
Martino Marangella ◽  
Omalla Bianco ◽  
Franco Linari

Abstract We propose using ion chromatography to determine tartrate concentration in urine. A 100-microL sample of urine is diluted and injected into the chromatograph. Tartrate is eluted within 11.5 min as a distinct and well-resolved peak. The sensitivity of the standard procedure (signal-to-noise ratio, 3/1) is 30 mumol/L. The intra-run and interrun coefficients of variation are 2.5% and 4.1%, respectively. Mean analytical recovery of known amounts of added tartrate ranges between 94.2% and 104.0%. We investigated the specificity of the procedure by analyzing urine containing added dicarboxylic acids structurally related to tartrate. The reliability of the procedure makes it suitable for investigating tartrate metabolism, e.g., the potential role of tartrate as an inhibitor of crystallization in calcium nephrolithiasis.


2016 ◽  
Vol 46 (6) ◽  
pp. 943-949 ◽  
Author(s):  
Geraldo Salgado-Neto ◽  
Marcos André Braz Vaz ◽  
Jerson Vanderlei Carús Guedes ◽  
Marlove Fátima Brião Muniz ◽  
Elena Blume

ABSTRACT: The scientific and economic importance of soybean root rot justifies the study of this disease, especially the role of insects as dispersers in the spread of root pathogens. The objective was to identify and evaluate qualitatively and quantitatively the role of Cyclocephala modesta, Dyscinetus gagatesand Diloboderus abderus(Coleoptera: Melolonthidae) in the dispersion of root pathogens in cultivated fields. The fungi were identified to the species level with DNA extraction and sequencing of these organisms within Melolonthidae larvae. Larvae were dissected and separated into the parts: mouth parts, prothorax, cuticle and digestive tract (alimentary canal). The Internal Transcribed Spacer region of the rRNA was amplified and compared to sequences deposited in GenBank. This is the first record of dispersion Fusarium oxysporumby Cyclocephala modesta, Dyscinetus gagatesand Diloboderus abderus (Coleoptera: Melolonthidae) under soybean in Brazil.


2007 ◽  
Vol 2 (3) ◽  
pp. 201-210
Author(s):  
L.A. Vilas-Boas . ◽  
M.A. Coronado . ◽  
G.T. Vilas-Boas . ◽  
R.F.H. Dekker . ◽  
A.M. Barbosa . ◽  
...  

Parasitology ◽  
2016 ◽  
Vol 143 (11) ◽  
pp. 1437-1442 ◽  
Author(s):  
JASNA KRALJIK ◽  
ANNA PAZIEWSKA-HARRIS ◽  
DANA MIKLISOVÁ ◽  
LUCIA BLAŇAROVÁ ◽  
LADISLAV MOŠANSKÝ ◽  
...  

SUMMARYWe investigated the diversity of Bartonella in Apodemus agrarius, an important rodent of peri-domestic habitats, which has spread into Europe in the past 1000 years. Spleen samples of 344 A. agrarius from Eastern Slovakia were screened for the presence of Bartonella spp. using 16S–23S rRNA internal transcribed spacer region and bacteria were detected in 9% of rodents. Based on sequencing of three housekeeping genes (gltA, rpoB and groEL) Bartonella genotypes were ascribed to the species typical for mice and voles: B. grahamii, B. taylorii and B. birtlesii. However, the study also confirmed presence of genotypes belonging to the B. clarridgeiae/B. rochalimae clade, and the B. elizabethae/B. tribocorum clade, which are not commonly found in woodland rodents. In addition, a potential recombination event between these two genotypes was noted, which highlights an important role of A. agrarius in shaping Bartonella diversity and evolution.


Sign in / Sign up

Export Citation Format

Share Document