73 research outputs found
Resolution of the type material of the Asian elephant, Elephas maximus Linnaeus, 1758 (Proboscidea, Elephantidae)
The understanding of Earth’s biodiversity depends critically on the accurate identification and nomenclature of
species. Many species were described centuries ago, and in a surprising number of cases their nomenclature or type
material remain unclear or inconsistent. A prime example is provided by Elephas maximus, one of the most iconic
and well-known mammalian species, described and named by Linnaeus (1758) and today designating the Asian
elephant. We used morphological, ancient DNA (aDNA), and high-throughput ancient proteomic analyses to
demonstrate that a widely discussed syntype specimen of E. maximus, a complete foetus preserved in ethanol, is
actually an African elephant, genus Loxodonta. We further discovered that an additional E. maximus syntype,
mentioned in a description by John Ray (1693) cited by Linnaeus, has been preserved as an almost complete skeleton
at the Natural History Museum of the University of Florence. Having confirmed its identity as an Asian elephant
through both morphological and ancient DNA analyses, we designate this specimen as the lectotype of E. maximus
The Role of the Iron Transporter ABCB7 in Refractory Anemia with Ring Sideroblasts
Refractory Anemia with Ring Sideroblasts (RARS) is an acquired myelodysplastic syndrome (MDS) characterized by an excess iron accumulation in the mitochondria of erythroblasts. The pathogenesis of RARS and the cause of this unusual pattern of iron deposition remain unknown. We considered that the inherited X-linked sideroblastic anemia with ataxia (XLSA/A) might be informative for the acquired disorder, RARS. XLSA/A is caused by partial inactivating mutations of the ABCB7 ATP-binding cassette transporter gene, which functions to enable transport of iron from the mitochondria to the cytoplasm. Furthermore, ABCB7 gene silencing in HeLa cells causes an accumulation of iron in the mitochondria. We have studied the role of ABCB7 in RARS by DNA sequencing, methylation studies, and gene expression studies in primary CD34+ cells and in cultured erythroblasts. The DNA sequence of the ABCB7 gene is normal in patients with RARS. We have investigated ABCB7 gene expression levels in the CD34+ cells of 122 MDS cases, comprising 35 patients with refractory anemia (RA), 33 patients with RARS and 54 patients with RA with excess blasts (RAEB), and in the CD34+ cells of 16 healthy controls. We found that the expression levels of ABCB7 are significantly lower in the RARS group. RARS is thus characterized by lower levels of ABCB7 gene expression in comparison to other MDS subtypes. Moreover, we find a strong relationship between increasing percentage of bone marrow ring sideroblasts and decreasing ABCB7 gene expression levels. Erythroblast cell cultures confirm the low levels of ABCB7 gene expression levels in RARS. These data provide an important link between inherited and acquired forms of sideroblastic anemia and indicate that ABCB7 is a strong candidate gene for RARS
Sustaining Progress towards NTD Elimination: An Opportunity to Leverage Lymphatic Filariasis Elimination Programs to Interrupt Transmission of Soil-Transmitted Helminths
Copyright © 2016 Means et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The attached file is the published version of the article
Creating testable questions in practical conservation: a process and 100 questions
It is now clear that the routine embedding of experiments into conservation practice is essential for creating reasonably comprehensive evidence of the effectiveness of actions. However, an important barrier is the stage of identifying testable questions that are both useful but also realistic to carry out without a major research project. We identified approaches for generating such suitable questions. A team of 24 participants crowdsourced suggestions, resulting in a list of a hundred possible tests of actions.Additional co-authors: Roger Mitchell, William H. Morgan, Roy Mosley, Silviu O. Petrovan, Kit Prendergast, Euan G. Ritchie, Hugh Raven, Rebecca K. Smith & Ann Thornto
Creating testable questions in practical conservation: a process and 100 questions
It is now clear that the routine embedding of experiments into conservation practice is essential for creating reasonably comprehensive evidence of the effectiveness of actions. However, an important barrier is the stage of identifying testable questions that are both useful but also realistic to carry out without a major research project. We identified approaches for generating such suitable questions. A team of 24 participants crowdsourced suggestions, resulting in a list of a hundred possible tests of actions
The fluvial flux of particulate organic matter from the UK: Quantifying in-stream losses and carbon sinks
Crop Updates 2003 - Cereals
This session covers twenty one papers from different authors:
PLENARY
1. Recognising and responding to new market opportunities in the grains industry, Graham Crosbie, Manager, Grain Products Research, Crop Breeding, Plant Industries, Department of Agriculture
2. Stripe rust – where to now for the WA wheat industry? Robert Loughman1, Colin Wellings2 and Greg Shea11Department of Agriculture, 2University of Sydney Plant Breeding Institute, Cobbitty (on secondment from NSW Agriculture)
3. Benefits of a Grains Biosecurity Plan, Dr Simon McKirdy, Plant Health Australia, Mr Greg Shea, Department of Agriculture
4. Can we improve the drought tolerance of our crops? Neil C. Turner, CSIRO Plant Industry, Wembley
5. The silence of the lambing, Ross Kingwell, Department of Agriculture
AGRONOMY AND VARIETIES
6. Maximising performance of wheat varieties, Brenda Shackley, Wal Anderson, Darshan Sharma, Mohammad Amjad, Steve Penny Jr, Melanie Kupsch, Anne Smith, Veronika Reck, Pam Burgess, Glenda Smith and Elizabeth Tierney, Department of Agriculture
7. Wheat variety performance in wet and dry, Peter Burgess
8. e-VarietyGuide for stripe rust – an updated version (1.02 – 2003), Moin Salam, Megan Collins, Art Diggle and Robert Loughman, Department of Agriculture
9. Baudin and Hamelin – new generation of malting barley developed in Western Australia, Blakely Paynter, Roslyn Jettner and Kevin Young, Department of Agriculture
10. Oaten hay production, Jocelyn Ball, Natasha Littlewood and Lucy Anderton, Department of Agriculture
11. Improving waterlogging tolerance in wheat and barley, Irene Waters and Tim Setter, Department of Agriculture
12. Broadscale variety comparisons featuring new wheat varieties, Jeff Russell, Department of Agriculture, Centre for Cropping Systems
BIOTECHNOLOGY
13. Barley improvement in the Western Region – the intergration of biotechnologies, Reg Lance, Chengdao Li and Sue Broughton, Department of Agriculture
14. The Western Australian State Agricultural Biotechnology Centre – what we are and what we do, Michael Jones, WA State Agricultural Biotechnology Centre, Murdoch University
15. Protein and DNA methods for variety identification, Dr Grace Zawko, Saturn Biotech Limited
16. The Centre for High-throughput Agricultural Genetic Analysis (CHAGA), Keith Gregg, CHAGA, Murdoch University
NUTRITION
17. Potassium – topdressed, drilled or banded? Stephen Loss, Patrick Gethin, Ryan Guthrie, Daniel Bell, Wesfarmers CSBP
18. Liquid phosphorus fertilisers in WA, Stephen Loss, Frank Ripper, Ryan Guthrie, Daniel Bell and Patrick Gethin, Wesfarmers CSBP
19. Wheat nutrition in the high rainfall cropping zone, Narelle Hill1and Laurence Carslake2, 1Department of Agriculture, 2Wesfarmers Landmark
PESTS AND DISEASES
20. Managenent options for root lesion nematode in West Australian cropping systems, Vivien Vanstone, Sean Kelly and Helen Hunter, Department of Agriculture
STORAGE
21. Aeration can profit your grain enterprise, Christopher R. Newman, Department of Agricultur
Next-generation mitogenomics: A comparison of approaches applied to caecilian amphibian phylogeny
Mitochondrial genome (mitogenome) sequences are being generated with increasing speed due to the advances of next-generation sequencing (NGS) technology and associated analytical tools. However, detailed comparisons to explore the utility of alternative NGS approaches applied to the same taxa have not been undertaken. We compared a 'traditional' Sanger sequencing method with two NGS approaches (shotgun sequencing and non-indexed, multiplex amplicon sequencing) on four different sequencing platforms (Illumina's HiSeq and MiSeq, Roche's 454 GS FLX, and Life Technologies' Ion Torrent) to produce seven (near-) complete mitogenomes from six species that form a small radiation of caecilian amphibians from the Seychelles. The fastest, most accurate method of obtaining mitogenome sequences that we tested was direct sequencing of genomic DNA (shotgun sequencing) using the MiSeq platform. Bayesian inference and maximum likelihood analyses using seven different partitioning strategies were unable to resolve compellingly all phylogenetic relationships among the Seychelles caecilian species, indicating the need for additional data in this case
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