Piptoporellus baudonii is proposed as a new combination for Laetiporus baudonii in the Polyporales (Basidiomycota) based on morphological and molecular features. This parasitic macrofungus attacks cashew trees, Eucalyptus, cassava, Tectona, and some indigenous trees in southern regions of Tanzania and poses a serious threat to agroforestry and livelihood conditions in the area. Phylogenetic trees were produced from partial sequences of three rDNA gene regions and a portion of translation elongation factor 1-alpha (TEF1) gene of Laetiporus baudonii for comparisons with samples from the antrodia clade. Our results reveal a strongly supported group of L. baudonii with Piptoporellus in Fomitopsidaceae. Piptoporellus baudonii shares many morphological features with other members of Piptoporellus but differs from them in having broadly ellipsoid or rarely ovoid basidiospores. Both morphological and phylogenetic evidence justify the placement of L. baudonii in Piptoporellus together with the three other known species in the genus.
A large polyporoid mushroom from the West Usambara Mountains in North-eastern Tanzania produces dark brown, up to 60-cm large fruiting bodies that at maturity may weigh more than 10 kg. It has a high rate of mycelial growth and regeneration and was found growing on both dry and green leaves of shrubs; attached to the base of living trees, and it was also observed to degrade dead snakes and insects accidentally coming into contact with it. Phylogenetic analyses based on individual and concatenated data sets of nrLSU, nrSSU and the RPB2 and TEF1 genes showed it, together with Laetiporus, Phaeolus, Pycnoporellus and Wolfiporia, to form a monophyletic group in Polyporales. Based on morphological features and molecular data, it is described as Kusaghiporia usambarensis.
Many researchers have recently been interested in the Genre-based analysis of the manipulation of academic writing language such as the rhetorical moves of the thesis abstract section. Genre-based analysis of rhetorical move structure provides a keen eye on the effective organizational and functional aspects of abstract components. These rhetorical move structures have often been overlooked or written differently by different writers, especially in the Iraqi context, that is, M.A linguistics thesis abstract section written by Iraqi postgraduate students. A few studies on rhetorical move structures have been conducted in the Iraqi M A linguistics university context, hence more studies are required. To this end, thirty M.A linguistics thesis abstracts have been purposively selected from three Iraqi public universities representing different parts of Iraq. Therefore, the current study is a genre-based analysis of the rhetorical move structure of Iraqi Post-Graduate Students. Swales ( 2004) model has been adopted to qualitatively analyze the rhetorical move structures of the thesis abstract. The findings revealed that there were few researchers following the structure of (Move1, Move2, and Move3). Also, there was a misuse of M2. Finally, the study implicates further application of genre-based analysis in both EFL and ESL contexts.
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