Plant Pathology Commons^™

Pseudomonas Syringae Hrp Type Iii Secretion System And Effector Proteins, Alan Collmer, Jorge L. Badel, Amy O. Charkowski, Wen-Ling Deng, Derrick E. Fouts, Adela R. Ramos, Amos H. Rehm, Deborah M. Anderson, Olaf Schneewind, Karin V. Van Dijk, James R. Alfano

Center for Plant Science Innovation: Faculty and Staff Publications

Pseudomonas syringae is a member of an important group of Gram-negative bacterial pathogens of plants and animals that depend on a type III secretion system to inject virulence effector proteins into host cells. In P. syringae, hrpyhrc genes encode the Hrp (type III secretion) system, and avirulence (avr) and Hrpdependent outer protein (hop) genes encode effector proteins. The hrpyhrc genes of P. syringae pv syringae 61, P. syringae pv syringae B728a, and P. syringae pv tomato DC3000 are flanked by an exchangeable effector locus and …

Crop Updates 2000 - Cereals Part 1, Timothy G. Reeves, Sanjaya Rajaram, Maarten Van Ginkel, Richard Trethowan, Hans-Joachim Braun, Kelly Cassaday, R. A. Mcintosh, Rob Loughman, Ross Brennan, Mike Bolland, Zed Rengel, David Isbister, Paul Blackwell, Derk Bakker, Greg Hamilton, David Houlbrooke, Cliff Spann, Doug Rowe, Patrick Gethin, Stephen Loss, Frank Boetel, Tim O'Dea, Noeleen Edwards, Wayne Pluske, Ross Brennan, M. T. F. Wong, K. Wittwer, H. Zhang

Crop Updates

This session covers eleven papers from different authors:

PLENARY PAPERS

1. New Wheat for a Secure, Sustainable Future, Timothy G. Reeves, Sanjaya Rajaram, Maarten van Ginkel, Richard Trethowan, Hans-Joachim Braun, and Kelly Cassaday, International Maize and Wheat Improvement Centre (CIMMYT)

2. Managing Cereal Rusts - a National Perspective, R.A. McIntosh, University of Sydney Plant Breeding Institute, New South Wales

3. Managing Cereal Rusts in 2000 - a regional imperative, R. Loughman, Agriculture Western Australia

4. Is nutrition the answer to wheat after canola problems?Ross Brennan¹, Bill Bowden¹, Mike Bolland¹, Zed Rengel^{2 …}

Crop Updates 2000 - Pulses, Kerry Regan, Peter White, Kamdambot Siddique, W. O'Neill, J. Russell, R. J. French, N. Brandon, C. Gaskin, N. Runciman, M. Seymore, J. Berger, N. C. Turner, R. Carpenter, C. Ludwig, R. Kenny, Q. Ma, M. H. Behboudian, J. A. Palta, H. Clarke, J. Stott, J. Howieson, K. L. Regan, R. Shackles, C. Francis, N. Acikgoz, N. Atikyilmaz, R. S. Malholtra, M. Baker, J. Clements, C. Hanbury, C. White, B. P. Mullan, R. Lancaster, I. Guthridge, I. Pritchard, P. Fisher, M. Braimbridge, J. Bignell, R. Beermier, W. Bowden, M. D. A. Bolland, G. P. Riethmuller, R. F. Brennan, S. Lawrence, Zen Rengel, S. P. Loss, P. Vedeniapine, C. Kirkwood, D. Wright, L. Latham, R. Jones, M. J. De Sousa Majer, D. Hardie, Oonagh Byrne, Penny Smith, Françoise Berlandier, N. Keals, R. Emery

Crop Updates

This session covers fifty nine papers from different authors:

1.1999 PULSE INDUSTRY HIGHLIGHTS

2. CONTRIBUTORS

3. BACKGROUND

4. SUMMARY OF PREVIOUS RESULTS

5. 1999 REGIONAL ROUNDUP

6. Northern Agricultural Region^, W. O’Neill, AGWEST

7. Central Agricultural Region J. Russell and R.J. French AGWEST

8. Great Southern and Lakes N. Brandon, C. Gaskin and N. Runciman, AGWEST

9. Esperance Mallee M. Seymour, AGWEST

PULSE PRODUCTION AGRONOMY AND GENETIC IMPROVEMENT

10. Faba Bean

11. Desi chickpea Traits associated with drought resistance in chickpea, J. Berger, N.C. Turner, CLIMA and CSIRO Plant Industry, R.J. French, AGWEST, R. Carpenter, C. Ludwig and R. …

Crop Updates 2000 - Lupins, Bill O'Neill, Geoff Thomas, Mark Sweetinham, Kedar Adhikari, Nick Galwey, Miles Dracup, Bob French, Debbie Thackray, Jenny Hawkes, Roger Jones, Françoise Berlandier, Yvonne Cheng, Lisa Smith, Chris Gazey, Michael O'Connell, Peter Carlton, John R. Peirce, Brad J. Rayner, Terry Piper, Peter Newman, Cameron Weeks, Mohammad Amjad, Glen Riethmuller, Paul Blackwell, Jairo A. Palta, Neil C. Turner, Robert J. French, Tim Setter

Crop Updates

This session covers nineteen papers from different authors:

1.1999 Lupin Highlights, Bill O’Neill, LUPIN PRODUCTIVITY IMPROVEMENTS AND INDUSTRY DEVELOPMENT

LUPIN ANTHRACNOSE

2. Anthracnose – 1999/2000, Geoff Thomas and Mark Sweetingham, Agriculture Western Australia

LUPIN BREEDING AND AGRONOMY

3. The genetic control of mildly restricted branching in narrow-leafed lupin (Lupinus augustifolius L), Kedar Adhikari^1,3, Nick Galwey^1,3 and Miles Dracup^2,3 1Plant Sciences, University of Western Australia 2Agriculture Western Australia ³Cooperative Research Centre for Legumes in Mediterranean Agriculture, University of Western Australia

4. Genotype x time of sowing interaction in lupins – Mingenew, Bob French, …

Crop Updates 2000 - Cereals Part 2, Debbie Thackray, Jenny Hawkins, Roger Jones, Dominie Wright, Peter Carlton, Jat Bhathal, Robert Loughman, K. Jayasena, J. Majewski, S. Kelly, G. Holloway, N, Venn, D. Diepeveen, Brenda Shackley, Darshan Sharma, Wal Anderson, Mohammad Amjad, Vanessa Dooley, Peter Burgess, Ashley Bacon, Frances Hoyle, Keith Devenish, Mathew Appelbee, Mohommed Hamza, Steven Mccoy, Steven Penny

Crop Updates

This session covers twenty papers from different authors:

DISEASE

1. Forecasting aphid and virus risk in cereals, Debbie Thackray, Jenny Hawkes and Roger Jones, Agriculture Western Australia and Centre for Legumes in Mediterranean Agriculture

2. Cereal Diagnostics, Dominie Wright, Agriculture Western Australia

3. The economic returns from spraying for leaf rust in the central wheatbelt in 1999, Peter Carlton, Trials Coordinator, Elders Limited

4. Impact and Management of Yellow Spot and Leaf Rust in the Northern Agricultural Region, Jat Bhathal and Robert Loughman, Agriculture Western Australia

5. Leaf disease management in wheat and barley in the southern …

The Pseudomonas Syringae Hrp Pathogenicity Island Has A Tripartite Mosaic Structure Composed Of A Cluster Of Type Iii Secretion Genes Bounded By Exchangeable Effector And Conserved Effector Loci That Contribute To Parasitic Fitness And Pathogenicity In Plants, James R. Alfano, Amy O. Charkowski, Wen-Ling Deng, Jorge L. Badel, Tanja Petnicki- Ocwieja, Karin Van Dijk, Alan Collmer

Center for Plant Science Innovation: Faculty and Staff Publications

The plant pathogenic bacterium Pseudomonas syringae is divided into pathovars differing in host specificity, with P. syringae pv. syringae (Psy) and P. syringae pv. tomato (Pto) representing particularly divergent pathovars. P. syringae hrp/hrc genes encode a type III protein secretion system that appears to translocate Avr and Hop effector proteins into plant cells. DNA sequence analysis of the hrp/hrc regions in Psy 61, Psy B728a, and Pto DC3000 has revealed a Hrp pathogenicity island (Pai) with a tripartite mosaic structure. The hrp/hrc gene cluster is conserved in all three strains and is flanked by a unique exchangeable …