Cotton Catchment Communities CRC

Narrabri, Australia

Cotton Catchment Communities CRC

Narrabri, Australia
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Coumans J.V.F.,University of New England of Australia | Harvey J.,University of Queensland | Backhouse D.,University of New England of Australia | Poljak A.,University of New South Wales | And 5 more authors.
Environmental Microbiology | Year: 2011

Thielaviopsis basicola, a soil-borne pathogen with a broad host range and a cosmopolitan distribution, is emerging as a major risk to sustainable cotton production in Australia. Previous studies suggested that host specialization has occurred making T. basicola an ideal model for a comparative proteomic analysis of strains isolated from different hosts. Elucidation of the genomic diversity and investigation of the functional differences in the Australian population could provide valuable information towards disease control. In this study, isolates of T. basicola were investigated for genomic (internal transcribed spacers region), proteomic and cotton virulence level variations. Internal transcribed spacers sequence analysis revealed that isolates are grouped based on host of origin irrespective of geographical origin. At the proteome level a degree of diversity was apparent and hierarchical clustering analysis of the data also demonstrated a close correlation between the proteome and the host of origin. LC-MS/MS analysis and identification using cross-species similarity searching and de novo sequencing of host-specific differentially expressed proteins and the virulence-correlated proteome allowed successful identification of 43 spots. The majority were found to be involved in metabolism. Spots that were correlated with host and virulence differences included a hypothetical protein with a Rossman-fold NAD(P)(+)-binding protein domain, glyceraldehyde-3-phosphate dehydrogenase, arginase and tetrahydroxynaphthalene reductase. © 2010 Society for Applied Microbiology and Blackwell Publishing Ltd.

Gregg P.C.,Cotton Catchment Communities CRC | Greive K.A.,Ego Pharmaceuticals | Del Socorro A.P.,University of New England of Australia | Hawes A.J.,Ag Biotech Australia Pty Ltd
Australian Journal of Entomology | Year: 2010

In this Overview, we explore the linkages between basic research and the commercial development of novel pest management products in Australia. Despite the large volume of research in fundamental and applied aspects of entomology, very few new pest management products are developed and commercialised in Australia. Reasons for this include demanding and expensive regulatory requirements which (as in many other countries) mean that commercial development is the province of large multinational agrochemical companies. We describe the Australian regulatory system and the opportunities and difficulties it can present, using examples from recently registered Australian products, Magnet® moth attractant and the MOOV® range of insect repellents. The science behind these products is described in a series of papers in this issue of Australian Journal of Entomology. We also explore some of the commercial imperatives in novel product development, and aspects of the interactions between researchers and commercial partners. Finally, we discuss potential advantages of Australia as a locale for commercial development of novel products. © 2010 The Authors. Journal compilation © 2010 Australian Entomological Society.

Perovic D.J.,Cotton Catchment Communities CRC | Perovic D.J.,Charles Sturt University | Gurr G.M.,aham Center For Agricultural Innovation | Simmons A.T.,aham Center For Agricultural Innovation | Raman A.,aham Center For Agricultural Innovation
Biocontrol Science and Technology | Year: 2011

We employed rubidium labelling to track the movement of arthropod natural enemies from a shelterbelt into an adjacent cotton field. Findings demonstrate that Dicranolaius bellulus (Coleoptera: Melyridae) and Oxyopes spp. (Araneae: Oxyopidae) move from the shelterbelt into the crop interior. Capture of rubidium-marked arthropod-predators within the cotton field provides the first hard evidence that semi-natural perennial habitats such as shelterbelts on cotton farms in Australia act as a resource for arthropod predators in adjacent crops. © 2011 Taylor & Francis.

Perovic D.J.,Cotton Catchment Communities CRC | Perovic D.J.,Charles Sturt University | Gurr G.M.,Charles Sturt University
Biocontrol Science and Technology | Year: 2012

Parasitoids are known to inhabit native vegetation on Australian farms but the extent to which they spill-over into nearby crops is not clear. Geostatistical analysis of parasitoid distribution data showed that vegetational preference and spill-over between native vegetation and cotton fields are highly variable, even between congenerics. © 2012 Taylor and Francis Group, LLC.

Korbel K.L.,Cotton Catchment Communities CRC | Korbel K.L.,University of Technology, Sydney | Lim R.P.,Cotton Catchment Communities CRC | Lim R.P.,University of Technology, Sydney | And 2 more authors.
Crop and Pasture Science | Year: 2013

Groundwater is essential to crop production in many parts of the world, and the provision of clean groundwater is dependent on healthy groundwater ecosystems. To understand better the functioning of groundwater ecosystems, it is necessary to understand how the biota responds to environmental factors, and so distinguish natural variation from human induced changes. This study compares the groundwater biota of the adjacent Gwydir and Namoi River alluvial aquifers, both in the heartland of Australia's cotton industry, and investigates the relative importance of environmental, anthropogenic, geological, and evolutionary processes on biotic distribution. Distinct differences in biotic assemblages were recorded between catchments at a community level. However, at a functional level (e.g. microbial activity, stygofauna abundances and richness) both ecosystems were similar. The distribution of biota in both catchments was influenced by similar environmental variables (e.g. geology, carbon availability, season, and land use). Broad trends in biotic distribution were evident: stygofauna responded most strongly to geological variables (reflecting habitat) and microbes to water quality and flow. Agricultural activities influenced biota in both catchments. Although possessing different taxa, the groundwater ecosystems of the two aquifers were functionally similar and responded to similar environmental conditions. © 2013 CSIRO.

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