Open AccessITS region of the rDNA of Pythium rhizosaccharum sp. nov. isolated from sugarcane roots: taxonomy and comparison with related species
Author(s) -
Singh Kusum Kumari,
Mathew Ritta,
Masih Isaac Emmanuel,
Paul Bernard
Publication year - 2003
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1016/s0378-1097(03)00206-4
Subject(s) - biology , ribosomal dna , rhizosphere , internal transcribed spacer , botany , saccharum officinarum , pythium , sporangium , taxonomy (biology) , oomycete , ribosomal rna , sensu , phylogenetics , gene , genus , genetics , bacteria , spore
Pythium rhizosaccharum (F‐1244) was isolated from soil samples taken in the rhizosphere of sugarcane ( Saccharum officinarum ) in the north‐eastern India. This species is characterized by its smooth‐walled, spherical sporangia and rarely formed sexual structures. When formed, the antheridial branches wrap around the oogonia and soon disappear after fertilization. The internal transcribed spacer (ITS) region of its rDNA is comprised of 904 bases. The taxonomical description of this new species and its comparison with related species are given here, together with the nucleotide sequences of the ITS1 and ITS2, and the 5.8S gene of its ribosomal nuclear DNA.