A new acylated triterpene together with prunasin, (-)-epicatechin, daucosterol, and three triterpenes, ursolic, oleanolic, and pomolic acids was isolated from the root of Chaenomeles japonica (THUNB.) LINDL. (Rosaceae) and determined to be 3-O-(E)-3, 5-dihydroxycinnamoylursolic acid on the basis of NMR and FAB-MS experiments.

Two new species of the genus Neophyllobius Berlese, 1886 are described: Neophyllobius lorestanicus sp. nov. collected from soil under Prunus domestica L. (Rosaceae) in Markazi province and Neophyllobius ostovani sp. nov. from soil and rotten leaves of oak trees in Fars province, Iran. A key to all known Iranian and Turkish species of Neophyllobius is provided.

Two new species belonging to the family Stigmaeidae, Cheylostigmaeus tarae sp. nov. and Stigmaeus delaramae sp. nov., are described from specimens collected from soil and litter under pear trees, Pyrus communis L. (Rosaceae) in Iran. A key to all Iranian species of the genera Cheylostigmaeus (male) and Stigmaeus (female) are provided. 

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...

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 ...