First Report of Diplodia corticola Causing Bleeding Cankers on Black Oak (Quercus velutina)

Mating patterns of black oak Quercus velutina (Fagaceae) in a Missouri oak-hickory forest.

Wind-pollinated forest trees usually have high outcrossing rates, but allogamy does not necessarily translate into high pollen movement. The goal of this study was to determine the outcrossing rates, pollen pool genetic structure, and the size of the effective pollination neighborhood in a population of black oak, Quercus velutina, in a Missouri oak-hickory forest. Based on 6 allozyme loci, 12 ...

The Description of Zapatella davisae, New Species, (Hymenoptera: Cynipidae) a Pest Gallwasp of Black Oak (Quercus velutina) in New England, USA

— Many species of gall wasp (Cynipidae) essentially co-exist with their host oak tree species. Occasionally, the association becomes destructive to the tree, as is the case with Zapatella davisae, new species. This species is a twig galler, and as such, in the cases of heavy infestation, cause flagging, leaf clumping, and dieback of branches and twigs. Historical records of other species of Zap...

First report of Fusarium chlamydosporum causing crown rot and dumping of on Durum wheat in Algeria

Several species of Fusarium infect durum wheat plants in the eastern part of Algeria. Endophytic fungus from random wheat seeds were sampled from fifty locations in eastern Algeria and shows the existence of Fusarium chlamydosporum regarding the macroscopic and microscopic characteristics. Molecular identification using EF1 and ITS1 primers were confirmed the presence of Fusarium chlamydosporum...

Diplofuranones A and B, two further new 4-monosubstituted 2(3H)-dihydrofuranones produced by Diplodia corticola, a fungus pathogen of cork oak

Two new 4-monosubstituted 2(3H)-dihydrofuranones, named diplofuranones A and B, were isolated from liquid cultures of Diplodia corticola, a plant pathogenic fungus causing a canker disease of cork oak (Quercus suber L.). The same fungus also produces several metabolites such as the diplopyrone, the (3S,4R)-transand the (3R,4R)-cis-4-hydroxymellein, the sapinofuranone B and its (S,S)-enantiomer,...

Effect of feeding young oak (Quercus pyrenaica) leaves to cattle on ruminal fermentation Effect of the administration of young oak (Quercus pyrenaica) leaves to cattle on ruminal fermentation