Rana/Pol III: A family of SINE-like sequences in the genomes of western Palearctic water frogs

Genome ◽  
1999 ◽  
Vol 42 (3) ◽  
pp. 504-511 ◽  
Author(s):  
S Bucci ◽  
M Ragghianti ◽  
G Mancino ◽  
G Petroni ◽  
F Guerrini ◽  
...  
Keyword(s):  
Repeat Unit ◽  
Rana Esculenta ◽  
Green Water ◽  
North African ◽  
Hybrid Form ◽  
Evolutionary Pattern ◽  
The North ◽  
Water Frogs ◽  
Western Palearctic ◽  
Pol Iii

The highly repetitive Rana/Pol III family consists of short, tandemly arrayed sequences, scattered throughout the genomes of Palearctic green water frogs. The repeat unit is about 250 bp in length and is a composite element: it contains a SINE-like retroposon with a tRNA structure, flanked by two short direct repeats, and the occurrence of two internal repeats gives evidence that an additional transposition event may have inserted a segment within the already transposed element. Rana/Pol III family is present in the genomes of Rana lessonae, R. ridibunda, and their hybrid form R. esculenta, as well as in R. shqiperica, R. epeirotica, R. cretensis, and the Italian taxon. These sequences are also present in the Iberian R. perezi, although less abundant, but appear to be lacking in the north African speciesR. saharica. The distribution of Rana/Pol III in the genomes of Palearctic green frogs is in agreement with the phyletic history based on genetic data. The evolutionary pattern proposed for the genus Rana enables us to suppose that the hybridogenetic mechanism is one of the factors accounting for the possible horizontal transfer of Rana/Pol III elements from the central-north Europe species to R. perezi.Key words: repetitive DNA, SINE-like retroposons, hybridogenesis, Rana esculenta group.

The Atlas Massif separates a northern and a southern mitochondrial haplotype group of North African water frogs Pelophylax saharicus (Anura: Ranidae) in Morocco

2015 ◽  
Vol 36 (4) ◽  
pp. 437-443 ◽  
Author(s):  
Aziza Lansari ◽  
Miguel Vences ◽  
Susanne Hauswaldt ◽  
Ralf Hendrix ◽  
David Donaire ◽  
...  
Keyword(s):  
Mitochondrial Haplotype ◽  
North African ◽  
High Atlas ◽  
Water Frog ◽  
The North ◽  
Water Frogs ◽  
Atlas Mountains ◽  
High Atlas Mountains ◽  
Gene Coi ◽  
Area North

We assessed the genetic variation of 47 Moroccan populations of the North African water frog (Pelophylax saharicus) using partial sequences of the mitochondrial cytochrome oxidase subunit I gene (COI). All 239 samples belonged to the main haplotype clade previously identified from Morocco, with no haplotypes of the Algerian/Tunisian clades among our samples. Altogether 40 haplotypes were found, with a maximum of 13 mutational steps between them. Two weakly divergent haplogroups separated by a minimum of six mutational steps were distributed (i) in the Anti-Atlas and the Sahara (south of the High Atlas Mountains) versus (ii) in the Middle Atlas, the High Atlas, and in the Rif area north of the Atlas Massif. Haplotypes of the northern haplogroup were found at the southernmost locality, which might be due to human translocation, and co-occurrence of the two haplogroups was recorded at three sites within the range of the northern haplogroup.

Characterization of two repetitive DNA families (RrS1 and Rana/Pol III) in the genomes of Palaearctic green water frogs

1999 ◽  
Vol 66 (3) ◽  
pp. 255-263 ◽  
Author(s):  
Matilde Ragghianti ◽  
Stefania Bucci ◽  
Francesca Guerrini ◽  
Giorgio Mancino
Keyword(s):  
Repetitive Dna ◽  
Green Water ◽  
Water Frogs ◽  
Pol Iii

Immunological Relationship of Western Palearctic Water Frogs (Salientia: Ranidae)

1982 ◽  
Vol 3 (2) ◽  
pp. 135-143 ◽  
Author(s):  
Thomas Uzzell
Keyword(s):  
Dry Period ◽  
Hybrid Form ◽  
Water Frogs ◽  
Western Palearctic ◽  
Hybrid Pair ◽  
Immunological Relationship ◽  
Microcomplement Fixation ◽  
Relationship Of ◽  
Sum Of Distances ◽  
Rana Lessonae

AbstractReciprocal immunological distances between six albumins of five taxa (Rana lessonae, Italian non-hybrids, R. perezi, the slow and fast albumins of R. ridibunda, and a sample possibly representing R. saharica) were determined with microcomplement fixation. The immunological distances determined by each antiserum were scaled so that the sum of distances to each albumin was identical to the sum of distances from that albumin. The scaled reciprocal values were then averaged and used to generate 39 Fitch-Margoliash phenograms. The three lowest percent standard deviations (% SD) for phenograms were 5.7, 8.3 and 8.6; the next lowest was 12.1; eight phenograms had % SD less than 20. The three phenograms with lowest (% SD agreed in grouping (a) the two albumins of Rana ridibunda; (b) Rana lessonae and the Italian non-hybrid; and (c) Rana perezi and R. "saharica ". In the lowest % SD phenogram, the two ridibunda alleles are linked to the R. lessonae-Italian non-hybrid pair; in the next, the two ridibunda albumins were linked first to the R. perezi-R. "saharica" pair; in the third, the R. lessonae-Italian non-hybrid pair was linked first to the R. perezi-R. "saharica" pair. These latter two phenograms include legs of -5.8 and -4.7, respectively. Five triads of data among the 35 possible in the lowest% SD phenogram fail to conform to the triangle inequality; this is associated with the failure of the antiserum to the rapidly migrating ridibunda albumin to distinguish between the two ridibunda albumins. This posed no problem in grouping the albumins. The negative legs in the second and third ranked phenograms are like those generated by the Fitch-Margoliash algorithm when additive data are forced into a tree other than that specified by the additive data. The three lowest % SD phenograms agree with other data suggesting groupings of the taxa represented. They all place the two ridibunda albumins together, and they all group R. lessonae with the I talian non-hybrid form; these latter two share numerous electrophoretic markers. The data suggest a divergence ofwestern Palearctic water frogs from the eastern North American R. catesbeiana ofabout 43 x 106 years ago. R. lessonae and the Italian non-hybrid may have shared a common ancestor with R. ridibunda some 12 x 106 years ago; R. lessonae and the Italian non-hybrids may have diverged as recently as 4 x 106 years ago. The two ridibunda albumins may differ by as little as one amino acid residue. The Iberian R. perezi and saharica may have diverged from the central European cluster about 16 x 166 years ago, and from each other about 6 x 106 years ago; this latter divergence may reflect the refilling of the Mediterranean Sea following a dry period some 7-5.5 x 106 years ago.

Aquaculture of First Larval Stages of the North African Green Water Frog

2012 ◽  
Vol 3 (8) ◽  
pp. 44-47
Author(s):  
Meher Bellakhal ◽  
◽  
André Neveu ◽  
Mouna Fartouna Bellakhal ◽  
Hechmi Missaoui
Keyword(s):  
Green Water ◽  
North African ◽  
Water Frog ◽  
Larval Stages ◽  
The North

Skeletochronology and mark–recapture assessments of growth in the North African agamid lizard (Agama impalearis)

1999 ◽  
Vol 249 (4) ◽  
pp. 455-461
Author(s):  
El Hassan El Mouden ◽  
Mohammed Znari ◽  
Richard P. Brown
Keyword(s):  
North African ◽  
Mark Recapture ◽  
Agamid Lizard ◽  
The North

scholarly journals Defatted Hydroethanolic Extract of Ammodaucus leucotrichus Cosson and Durieu Seeds: Antidiabetic and Anti-Inflammatory Activities

2020 ◽  
Vol 10 (24) ◽  
pp. 9147
Author(s):  
Imane Es-Safi ◽  
Hamza Mechchate ◽  
Amal Amaghnouje ◽  
Anna Calarco ◽  
Smahane Boukhira ◽  
...  
Keyword(s):  
Wistar Rats ◽  
Fasting Blood Glucose ◽  
Diabetic Mice ◽  
North African ◽  
Glucose Levels ◽  
The North ◽  
Blood Glucose Levels ◽  
Anti Inflammatory ◽  
Hydroethanolic Extract ◽  
Inflammatory Effect

The seeds of Ammodaucus leucotrichus Cosson and Durieu have been used in the North African Sahara as a traditional medicine to treat diabetes. The present study investigates the antidiabetic, antihyperglycemic, and anti-inflammatory properties of the defatted hydroethanolic extract of Ammodaucus leucotrichus (DHEAM). The antidiabetic and the antihyperglycemic studies were assessed on alloxan-induced diabetic with orally administered doses of DHEAM (100 and 200 mg/kg). At the same time, its anti-inflammatory propriety was evaluated by measuring edema development in the Wistar rats paw induced with carrageenan. Treatment of diabetic mice with DHEAM for four weeks managed their high fasting blood glucose levels, improved their overall health, and also revealed an excellent antihyperglycemic activity. Following the anti-inflammatory results, DHEAM exhibited a perfect activity. HPLC results revealed the presence of seven molecules (chlorogenic acid, 3-p-coumaroylquinic acid, gallic acid, ferulic acid, myricetin, quercetin, luteolin). This work indicates that the DHEAM has an important antidiabetic, antihyperglycemic, and anti-inflammatory effect that can be well established as a phytomedicine to treat diabetes.

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