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Isolation and Identification of Pyrene Mineralizing Mycobacterium spp. from Contaminated and Uncontaminated Sources
Get PDFCopyright © 2011 Christopher W. M. Lease et al. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Mycobacterium isolates obtained from PAH-contaminated and uncontaminated matrices were evaluated for their ability to degrade three-, four- and five-ring PAHs. PAH enrichment studies were prepared using pyrene and inocula obtained from manufacturing gas plant (MGP) soil, uncontaminated agricultural soil, and faeces from Macropus fuliginosus (Western Grey Kangaroo). Three pyrene-degrading microorganisms isolated from the corresponding enrichment cultures had broad substrate ranges, however, isolates could be differentiated based on surfactant, phenol, hydrocarbon and PAH utilisation. 16S rRNA analysis identified all three isolates as Mycobacterium sp. The Mycobacterium spp. could rapidly degrade phenanthrene and pyrene, however, no strain had the capacity to utilise fluorene or benzo[a]pyrene. When pyrene mineralisation experiments were performed, 70–79% of added 14C was evolved as 14CO2 after 10 days. The present study demonstrates that PAH degrading microorganisms may be isolated from a diverse range of environmental matrices. The present study demonstrates that prior exposure to PAHs was not a prerequisite for PAH catabolic activity for two of these Mycobacterium isolates
Review of Explorations in Critical Humanities: A Collection of Essays edited by Sreenath Muraleedharan K. & Devi K.
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Review of From the Edges of Empire: Convict Women from Beyond the British Isles edited by Lucy Frost and Colette McAlpine.
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Review of Zorami A Redemption Song by Malsawmi Jacob
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Oral Goes Viral – Reversing the Print Revolution
Get PDFThis paper attempts an evaluation of the phenomenally rapid growth over the past few decades of spoken-word poetry – a genre which is currently attracting more and more exponents across the globe, whose work is being disseminated with increasing speed to a worldwide audience. It is a genre both facilitated and shaped by the most modern of electronic media. After revisiting classic definitions of orality vs. literacy as media of communication, particularly in poetry, the paper goes on to illustrate the phenomenon via an examination of specific instances of a relatively recent revival of the oral tradition by Aotearoa New Zealand poets within the broad context of the Maori Renaissance. These authors, ranging from Hone Tuwhare via Muru Walters and Apirana Taylor to Robert Sullivan, might be said to have paved the way and set the pace for the meteoric post-millennium emergence of a substantial cohort of predominantly female poets from a Polynesian – and very often specifically Samoan – background, among them notably Sia Figiel, Tusiata Avia, Selina Tusitala Marsh and Courtney Sina Meredith. What these two groups have in common is their location on the margins of society and their articulation of protest against the associated status quo
A Poetics of Climate Change: Apocalyptic Rhetoric in Selected Poems from East Africa
Get PDFThis paper discusses the employment of fear eliciting images characteristic of environmental apocalypse as a means of influencing the attitude of audiences in regard to manifestations of climate change in selected poems from East Africa. The analysis draws on Stephen O’Leary and Greg Garrard’s understanding of comedy and tragedy as modes of thought applicable to apocalyptic stories. Following this thought, I analyse renditions of scenes of destruction in the poems to understand how harnessing emotions of fear and pity may be valuable in environmental discourse. I argue that far from enhancing the notion of an inescapable calamity towards which humans are fast careering, the emotions of fear and pity in the poems potentially enhance meaningful engagement with the ecological crisis, and promote culpability among audiences. I assert that reading apocalyptic representations as attempts to achieve rhetorical effects might be more beneficial in the context of environmental literary criticism than consideration of the truth value of apocalyptic projections. The article points out some of the ways in which the song mode of poetry may be supportive to this way of reading
Review of The Life to Come by Michelle de Kretser
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Almost Home
Get PDFAlmost Home embodies the outsider’s search for belonging amidst the foreign and the familiar. Written from several vantage points of a narrator who seeks to find a sense of calm in the wake of turbulence and a center from the margins at best, Almost Home paints a bittersweet portrait of grief and loss, of comings and goings, of a shared nostalgia that propels us backwards and forwards, around and back home again. Just almost.
Review of East-West Literary Imagination: Cultural Exchange from Yeats to Morrison by Yoshinobu Hakutani.
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