• Following the decades-long warming and drying trend in Alaska, there is mounting evidence that temperature-induced drought stress is associated with disease outbreaks in the boreal forest. Recent evidence of this trend is an outbreak of Cytospora canker disease (fungal pathogen Valsa melanodiscus (anamorph = Cytospora umbrina)) on Alnus species. • For Alnus fruticosa, we examined the effects ...

In order to study of the form-genus Cytospora, around 400 specimens were collected from all over the Iran during 2003-2005. In this paper, the first part of the obtained results, including seven form-species are presented. Cytospora atrocirrhata, C. carbonacea, C. gutnerae, C. nivea and C. rosarum are reported as new members for mycoflora of Iran. Also, Vitis vinifera for C. leucostoma and Celt...

cytospora dieback and canker disease is one of prevalent disease of walnut trees in iran caused by several species of cytospora genus. the aim of this study was to determination of virulence degree in 58 isolates of dominant species, cytospora chrysosperma. isolates from 12 provinces of iran; hamedan, kurdistan, kermanshah, ilam, west azarbaijan, zanjan, markazi, lorestan, chaharmahal va bakhti...

Almond canker diseases are destructive and can reduce the yield as well lifespan of almond orchards. These may affect trunk branches both young mature trees result in tree death soon after orchard establishment severe cases. Between 2015 2018, 70 orchards were visited throughout Central Valley California upon requests from farm advisors for disease diagnosis. Two major identified, including Bot...

genetic diversity relationships of 50 isolates of cytospora schulzeri on apple from different parts of the semirom region were analyzed using 15 polymerase chain reaction (pcr) based markers, 7 random amplified polymorphic dnas (rapds) and 8 microsatellite primed polymerase chain reaction (mp-pcr). using 7 selected rapd primers 113 bands were generated, of which 81 bands were polymorphic (71.7%...

In a taxonomic study on form-species of form-genus Cytospora, about four hundred fungal specimens were collected from all over the Iran during 2003-2005. In this paper, the second part of the obtained results, including seven form-species are presented. Cytospora intermedia, C. kantschavelii, C. leucosperma and C. ribis are reported as new members for mycoflora of Iran. Salix aegyptiaca for C. ...