Phytophthora and Pythium are a group of Oomycetes that widely associated with diseases in potato plants. Therefore, this study was conducted to identify the rhizosphere infected plants showing leaf blight. Four isolates were collected from four regions Central Java (UGM_St_TM, UGM_St_BK, UGM_St_BNJ, UGM_St_KJ, isolate Temanggung, Bakal, Banjarnegara, Kejajar respectively), UGM_St_NG as culture ...

The phylogeny of 116 species and varieties of Pythium was studied using parsimony and phenetic analysis of the ITS region of the nuclear ribosomal DNA. The D1, D2 and D3 regions of the adjacent large subunit nuclear ribosomal DNA of half the Pythium strains were also sequenced and gave a phylogeny congruent with the ITS data. All the 40 presently available ex-type strains were included in this ...

Soybean plants doubted to be infcted with damping-off were collected from different naturaly infected districts of Dakahlia Governorate. Frequency the isolated pathogens revealed that Fusarium solani, oxysporum, Rizoctonia Pythium ultimum and Macrophomina Phaseolina. most aggressive pathogenic fungi causing highest percentage pre-emergence in Giza 35and 111soybean cultivars. Among five fungi, o...

Bioavailability of contaminants is a prerequisite for their effective biodegradation in soil. The average bulk concentration of a contaminant, however, is not an appropriate measure for its availability; bioavailability rather depends on the dynamic interplay of potential mass transfer (flux) of a compound to a microbial cell and the capacity of the latter to degrade the compound. In water-unsa...