Two isolates of fungal entomopathogen Beauveria bassiana (Balsamo) Vuillemin (Hypocreales: Clavicipitaceae) were grown on cooked rice using diphasic liquid-solid fermentation in plastic bags to produce and harvest spore powder. The cultures were dried and significant differences were found for isolates and time of harvest. The spores were harvested manually and mechanically and after the cultur...

A molecular phylogenetic study of selected species of three sub-genera of the genus Cordyceps was undertaken, along with representatives of the genera Akanthomyces, Aschersonia, Gibellula, Hymenostilbe, Hypocrella, Nomuraea, and Torrubiella, to examine their inter-relationship. Phylogenetic analyses of the data indicated that the Clavicipitaceae form a monophy|etic group within the Hypocreales,...

BACKGROUND Grasses release the most widespread aeroallergens with considerable sensitization rates, while different species produce several pollen concentration peaks throughout the season. This study analyzed the prevalence of grass species in three different European city areas and compared the flowering period of these species with daily pollen concentrations and the symptom loads of grass p...

In the framework of interaction nets 6], Yves Lafont has proved 8] that every interaction system can be simulated by a system composed of 3 symbols named , and. One may wonder if it is possible to nd a similar universal system with less symbols. In this paper, we show a way to simulate every interaction system with a speciic interaction system constituted of only 2 symbols. By transitivity, we ...

Los suelos sódicos ocupan una extensa proporción de la Depresión del Salado. El sodio aumenta el pH y provoca dispersión las arcillas generando modificaciones en estructura los que perjudican crecimiento cultivos al reducir su porosidad infiltración. La aplicación yeso puede mejorar características sódicos. Se realizó un ensayo se aplicaron tres dosis yeso: A) 0 kg/ha (testigo); B) 100 (en líne...

During our expedition at Lang Biang Biosphere Reserve, samples of DL0023, parasitizing on wasps, were collected, then sent to the biology laboratory, Dalat University, Lam Dong Province, Vietnam, preliminarily morphologically identify name this species as Ophiocordyceps sphecocephala. The method Phenol (pH = 8)/Chloroform was applied isolated DNA. PCR assays and sequencing performed amplify ITS...

Vegetation succession was studied for 12 years on an abandoned nutrient-poor small field surrounded by a strip of natural grassland. No fertilizers or herbicides were applied. Few weeds or annuals were present during this period. Only two plants, i.e. Agrostis capillaris and Festuca rubra , dominated during the 12 years. At two spatial scales (0.04 and 0.4 m) a dramatic increase in species rich...