title: Nocardiopsis alkaliphila sp. nov., a novel alkaliphilic actinomycete isolated from desert soil in Egypt.
abstract: An alkaliphilic actinomycete strain, designated YIM 80379T, was isolated from a soil sample collected from the eastern desert of Egypt and subjected to polyphasic taxonomy. The strain produced substrate and aerial mycelia on different media, with an optimum pH for growth of 9.5-10 and scarce or no growth at pH 7. Strain YIM 80379T contained meso-diaminopimelic acid, no diagnostic sugars, type PIII phospholipids and MK-10(H6) and MK-10(H8) as the predominant menaquinones. All of these characters assign isolate YIM 80379T consistently to the genus Nocardiopsis. This was confirmed by 16S rDNA analysis. It can be differentiated from all Nocardiopsis species with validly published names by phenotypic characteristics, phylogenetic analysis and DNA-DNA hybridization results. On the basis of polyphasic evidence, a novel species, Nocardiopsis alkaliphila sp. nov., is proposed. The type strain of the species is YIM 80379T (=CCTCC AA001031T=DSM 44657T).
authors.affiliation: Botany Department, Faculty of Science, Cairo University, Beni-Suef, Egypt.
authors.forename: Wael N
authors.initials: WN
authors.lastname: Hozzein
authors.affiliation: Key Laboratory for Microbial Resources of the Ministry of Education, Laboratory for Conservation and Utilization of Bio-resources, Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, P.R. China.
authors.forename: Wen-Jun
authors.initials: WJ
authors.lastname: Li
authors.affiliation: Botany Department, Faculty of Science, Cairo University, Beni-Suef, Egypt.
authors.forename: Mohammed Ibrahim A
authors.initials: MIA
authors.lastname: Ali
authors.affiliation: Botany Department, Faculty of Science, Cairo University, Beni-Suef, Egypt.
authors.forename: Ola
authors.initials: O
authors.lastname: Hammouda
authors.affiliation: Botany Department, Faculty of Science, Cairo University, Beni-Suef, Egypt.
authors.forename: Ahmed S
authors.initials: AS
authors.lastname: Mousa
authors.affiliation: Key Laboratory for Microbial Resources of the Ministry of Education, Laboratory for Conservation and Utilization of Bio-resources, Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, P.R. China.
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Xu
authors.affiliation: Key Laboratory for Microbial Resources of the Ministry of Education, Laboratory for Conservation and Utilization of Bio-resources, Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, P.R. China.
authors.forename: Cheng-Lin
authors.initials: CL
authors.lastname: Jiang
mesh_terms: D000192:Actinomycetales / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology; D004275:DNA, Ribosomal / Q000235:genetics; D003889:Desert Climate; D004534:Egypt; D008855:Microscopy, Electron, Scanning; D008969:Molecular Sequence Data; D010743:Phospholipids / Q000378:metabolism; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D004275:DNA, Ribosomal; D010743:Phospholipids; D012336:RNA, Ribosomal, 16S