In this work the possible antimicrobial activity of crude methanol extract (CE), hexane, ethyl acetate and butanol fractions, as well as four pure compounds obtained from Rubus imperialis roots was evaluated. The minimal inhibitory concentrations (MIC) were determined using the agar dilution method. The experiments showed that the extract and some fractions exhibited antimicrobial action, parti...

A survey on 13 regions of Kazakhstan was carried out to identify foci fire blight, the extent its spread, range affected crops, and identification infection reserves. The disease mainly concentrated in main fruit growing zone.at south southeast Kazakhstan. Symptoms blight were characteristic two bacterial diseases: namely, necrosis, by Pseudomonas syringae Van. Hall. Erwinia amylovora (Burrill)...

Erwinia amylovora is the causative agent of fire blight, a serious disease of some Rosaceae plants. The newly isolated bacteriophage PhiEaH2 is able to lyse E. amylovora in the laboratory and has reduced the occurrence of fire blight cases in field experiments. This study presents the sequenced complete genome and analysis of phage PhiEaH2.

Abstract Calcium ions are involved in plant self-incompatibility response as important signaling substances cells. In the sporophytic response, Ca 2+ enters stigma papilla cells and plays a key role inhibiting incompatible pollen tube growth. gametophytic reaction of Papaveraceae, female determinants style ( PrsS ) male PrpS recognize each other, promote extracellular influx into tube, destroy ...

leaf anatomy of 27 species of potentilla l. (rosaceae), representing 9 sections and four related genera, especially tylosperma botsch., schistophyllidium (juz. ex fed.) ikonn., drymocallis fourr. ex rydb., and sibbaldia l. from iran were studied using light microscopy. the most outstanding characters of blade and midrib were measured. the result revealed a number of taxonomically important char...

for the first time, potentilla balansae sojak. and potentilla radiata lehm. are reported from north and northeast of iran. potentilla balansae pesmen is akin to p. anatolica and p. umbrosa but differs from both in its smaller petals, fewer tooted leaflets and usually subpinnate leaves. potentilla radiata lehm., is a hybrid species in origin, (p. argentea 㗠p. thuringiaca ). the photographs of ...

Micromorphological study on the seeds of wild species Pyrus (Rosaceae) in Iran and their taxonomic implication