Phylogenetic relationships of Phytophthora species based on ribosomal ITS I DNA sequence analysis with emphasis on Waterhouse groups V and VI

Phylogenetic analysis of Phytophthora species based on mitochondrial and nuclear DNA sequences

“…Growth characteristics (like colony morphology and optimal growth temperature) are not unequivocal, and traits depend on the method used for measurement (e.g., the effect of growth media or host tissue on oospore size), or may vary because of ambiguity in trait description by observers (e.g., papillate vs. semi-papillate). The problems associated with assigning isolates to either P. drechsleri or P. cryptogea exemplify this situation (Erwin and Ribeiro, 1996;Forster et al, 2000). Additionally, growth characteristics and morphological traits are phenotypic, and groups of species sharing similar traits do not necessarily reflect evolutionary relatedness, since they may have evolved independently (convergent evolution).…”

One stop shop: backbones trees for important phytopathogenic genera: I (2014)

“…Early efforts to understand phylogenetic relationships in Phytophthora focused on the use of the nuclear encoded rDNA, primarily the ITS region (Förster et al 2000;Cooke and Duncan 1997;Crawford et al 1996). Cooke et al (2000) published the first comprehensive phylogenetic analysis of the genus using the ITS region to examine the phylogeny of 50 species.…”

Identification of Phytophthora spp. from Perennial Crops in Malaysia, Its Pathogenicity and Cross-pathogenicity

“…A NJ tree based on the ITS sequences illustrated that P. palmivora and P. nicotianae were clearly from two FIGURE 3. Sporangium of Phytophthora isolate from cocoa (A) and durian (B) was caducous with prominent papilla and short pedicel and from (C) rubber isolates was noncoducous with prominent papilla tree based on ITS sequences (Cooke et al 2000;Crawford et al 1996;Förster et al 2000;Lee & Taylor 1992). The finding from this study is similar to Bowman et al (2007) which successfully differentiated both P. palmivora and P. nicotianae using restriction fragment length polymorphism (RFLP) on the ITS region for species identification.…”