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• The effect of foreign stallions on the Hungarian Furioso-North Star breed

  67-70

  Renáta Klein

  János Oláh

  Sándor Mihók

  János Posta

  Views:

  569

  The most common aim of animal conservation programs is to maintain genetic diversity. Furioso-North Star is an indigenous Hungarian horse breed originated from Mezőhegyes Stud. The breed is based on two founder stallions, Furioso Senior and North Star Senior. The aim of this research study was to analyze the effect of the foreign breeding stallions to the genetic structure of Hungarian Furioso-North Star breed. The genetic structure of the breed was studied from pedigree data what was received from the Furioso-North Star Horse Breeding Association. Foals born between 2015–2018 were chosen as reference population. Every breeding stallion was marked by nationality (Austrian, Czech, German, Hungarian, Romanian or Slovak) according to their birth place. The population was described with genetic variability, what was calculated using Endog software. The Furioso-North Star breed is popular in Central Europe and nearby countries. The stallion imports and the stallion transfers were necessary and useful as they made changes in the composition of the genetic variability. The new genes and the new lines have refreshed the genetic structure. There were several breeds, like the Nonius, Shagya Arabian and English Thoroughbred, whose had an impact on the genetic structure of the Furioso-North Star breed.

• Cytochrome b diversity of Hungarian Botrytis cinerea strains

  18-21

  Mojtaba Asadollahi

  Éva Fekete

  Erzsébet Fekete

  Levente Karaffa

  László Irinyi

  Ersébet Sándor

  Views:

  284

  In the mitochondrion of eukaryotes, cytochrome b is a component of respiratory chain complex III. Cytochrome b is encoded by the
  cytochrome b (CYTB) gene located in the mitochondrial genome. The fungicidal activity of QoIs relies on their ability to inhibit mitochondrial respiration by binding at the so-called Qo site (the outer quinol-oxidation site) of the complex III. Since their introduction, QoIs (like azoxystrobin) have become essential components of plant disease control programs because of their wide-ranging efficacy against many agriculturally important fungal diseases like grey mould on various crops. QoI resistance primarily arises from a target-site-based mechanism involving mutations in the mitochondrial CYTB. As the management of grey mould is often dependent on chemicals, the rational design of control programs requires the information about the diversity of genes connected with resistance in field populations of the pathogen.
  Monospore B. cinerea field isolates has been collected during 2008-2009 from different hosts in Hungary. PCR fragment length analysis
  indicated the high frequency presence of type large intron in the isolates while in a few strains G143A substitution could also be detected.
  These results indicated the heterogeneity of CYTB in the Hungarian B. cinerea populations, which possibly involve the heteroplasmy of this
  mitochondrial gene, moreover indicates the existence op azoxystrobin resistant populations in Hungary.
  This work was supported by NKFP-A2-2006/0017 grant. Erzsébet Fekete is a grantee of the János Bolyai Scholarship (BO/00519/09/8).