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(The University of California, Davis)

The University of California, Davis (UCD) is a public research university located in Davis, California, and one of ten campuses in the University of California system. Commonly referred to as UC Davis, the school was originally established in 1905 as the University Farm, an extension of UC Berkeley. UC Davis welcomed its first class in 1908. It was later formally established as a UC campus by the Regents of the University of California in 1959.

More information: http://en.wikipedia.org/wiki/University_of_California,_Davis

Tatiana Roubtsova Overview of Projects in the Bostock Lab Dr. Patrik Inderbitzin Collaboration with the Michailides lab Matt DiLeo Matt Pye Brown rot of stone fruits – Monilinia spp. collaboration with Tom Gradziel, UCD Plant Sciences Mechanisms of abiotic root stress predisposition to Phytophthora root rot Mohammad Yaghmour Fig. 2. Small-scale hydroponic system for predisposition studies in tomato. Episodes of root stress that induce water deficit, such as salt, drought, and cold, followed by reversion to normal conditions can leave plants predisposed to diseases caused by Phytophthora species and other pathogens. Predisposition is readily demonstrated in the field and greenhouse in diverse species such as safflower, tomato, and rhododendron. The underlying mechanisms for predisposition, however, are unresolved. Currently we are using tomato, Arabidopsis, and Rhododendron in hydroponic and soil systems to study predisposition to P. capsici and P. ramorum. In these systems, brief exposure to salinity stress, followed by a recovery period in which all plants regain full turgor, can break basal resistance and significantly hastens damping off and lesion development caused by these and other Phytophthora spp. The phytohormone abscisic acid (ABA) has been implicated as an important signal in disease predisposition due to its primary role in plant responses to water deficit and its ability to alter plant-pathogen interactions when applied exogenously to pl...

Does resistance induced by the pitch canker pathogen affect susceptibility to other diseases? Studies are underway to determine if resistance induced by inoculation with Fusarium circinatum also influences susceptibility to Diplodia pinea, a cause of shoot blight and cankers in many coniferous species. To this end, one-year-old pines were inoculated on the upper stem with either F. circinatum or D. pinea or with water; each treatment was applied to five replicate trees. Three weeks after inoculation upper stems were cut off below the point of inoculation and lesion lengths were recorded. Each tree was then challenged by inoculation with D. pinea, and lesion lengths were measured three weeks later. An additional set of trees challenged with F. circinatum served as a positive control. As shown in the figure below, inoculation of pines with either of the two fungal pathogens resulted in reduced lesion sizes in challenge inoculations with D. pinea. Thus, the preliminary results of this study suggest that infection of Monterey pines with either F. circinatum or D. pinea may induce resistance to subsequent infection by D. pinea. What is going on in 281 Hutchison Hall? T.R. Gordon, S.C. Kirkpatrick, J.C. Petersen, G. Ritokova, S. Slinski and coming soon… Cassandra Swett Induction treatment Lesion length (mm) How temperature imposes ecological limits on Fusarium circinatum Pitch canker is most problematic in areas with a relatively warm climate, suggesting...

Figure 1. Working model for the synthesis, regulation, and function of AvrXa21. Functions were assigned to each of the rax gene products based on sequence homology and/or functional studies: RaxH, histidine kinase; RaxR, response regulator; RaxP, ATP sulfurylase; RaxQ, adenosine-5´-phosphosulphate kinase; RaxST, sulfotransferase; RaxA, membrane fusion protein, spanning the inner membrane and the periplasmic space; RaxB, ATP binding cassette transporter; and RaxC, outer-membrane protein. The Xanthomonas oryzae pv. oryzae RaxST tyrosine sulfotransferase is required for AvrXa21 activity Sang-Wook Han, Sang-Won Lee, and Pamela C. Ronald Department of Plant Pathology, University of California, Davis, CA 95616 USA. swhan@ucdavis.edu The pathogen recognition receptor XA21 confers immunity against strains of Xanthomonas oryzae pv. oryzae (Xoo) carrying the AvrXa21 molecule. In previous studies, we identified eight genes that are required for AvrXa21 activity (rax) in Xoo. Expression of these rax genes depends on population density and other functioning rax genes (Figure 1; Lee, et. al., 2006). These data suggest that AvrXa21 is involved in quorum sensing, and that AvrXa21 represents a previously uncharacterized class of Gram-negative bacterial signaling molecules. To determine the molecular basis of the AvrXa21/XA21 interaction and to further understand the role of AvrXa21 in quorum sensing, we have characterized raxP, raxQ, and raxST genes encoding proteins involved in the sulf...

Application of pluronic gel to the study of plant-nematode interactions Congli Wang, Steven Lower, Qingli Liu, and Valerie M. Williamson Department of Nematology, University of California, Davis, CA 95616 Pluronic gel F-127 is a stable and non-toxic compound that is widely used in medical and pharmaceutical fields. Pluronic gel is solid at room temperature and liquid at temperatures below 15°C when the gel concentration is about 20-30%. Nematodes can freely move inside the gel. We used 23% pluronic gel to study root-knot nematode (Meloidogyne spp.) attraction to different host plants. We found that tomato is the best attractant for M. hapla strain VW9 among bean, cowpea, Medicago truncatula and tomato. Attraction of strain VW9 to roots differs among four varieties of M. truncatula. Moreover, roots of three-day-old seedlings are better attractants for VW9 than one-week-old seedlings. The transparent gel system can be used to record nematode movement in the presence of the host plants and to compare attraction and infectivity among different strains or species of nematodes on one host. Movement of M. javanica to roots is much more rapid than that of M. hapla. This gel system is also applicable for study of the molecular biology of host-nematode interaction before and after the early stage of infection in vivo. We developed a rapid method to inoculate host roots with large amounts of nematodes in pluronic gel and to collect nematodes exposed to roots and those entering int...

In this stage of business development, MembreX will work towards designing and financing a distillery based on MembreX technology. Technical staff will be hired to do the final optimization of the heatless distillation process and to design a distillery. A money manager will be hired to assure investors that MembreX is efficient in its spending and accountable to each funding source. IP will protect advancements in heatless distillation technology and the pre-filtering steps for bio-crude. With a prototype in hand, MembreX CEO and sales staff will write renewal grants, raise capital for lab operation, and make partnerships with distillery manufacturers. By owning shares in the distilleries using MembreX technologies, MembreX will be making money on construction and ethanol sales. MembreX heatless distillation technology will be priced at seven years operating cost for a traditional heated distillery. MembreX Energy: Heatless Ethanol Distillation 6597 Energy Cost 2552 Energy Cost w/o distillation Energy From 1000 L Ethanol 5130 Energy from Ethanol 1011 Electricity in Distillation 2546 Steam in Distillation 2522 Corn Production Energy Cost 1000 L Ethanol $268.81 Reclaimed Toluene (90%) Methanol 3rd Development Recalibration of reaction conditions $357.55 25.4 mM Toluene Methanol 2nd Development $140.96 Reclaimed Toluene (90%) Reclaimed Ethanol (90%) 4th Development No change to current methods $721.91 25.4 mM Toluene Ethanol ... 5
Explaining Disparities in the Cost of Healthier Food Karen M. Jetter and Diana L. Cassady Select Paper Presented at the AAEA meetings Denver, Colorado August 2, 2004

Explaining Disparities in the Cost of Healthier Food Karen M. Jetter and Diana L. Cassady Select Paper Presented at the AAEA meetings Denver, Colorado August 2, 2004

Science and Sustainability in U.S. Agriculture Kenneth G. Cassman Director, Nebraska Center for Energy Science Research (www.ncesr.unl.edu) University of Nebraska

Trade in Mediterranean Products: The Effects of United States Regional and Bilateral Trade Agreements Cal Med Consortium Workshop Mediterranean Products in the WTO Trade Negotiations and Trade Disputes and in Regional Trade Agreements Fumiko Yamazaki & Mechel S. Paggi* Montpellier, France 26, June, 2006 Fumiko Yamazaki, Senior Research Economist and Mechel S. Paggi, Director Center for Agricultural Business, California State University, Fresno
Producer Organizations in the EU: policy issues Jose-Maria Garcia-Alvarez-Coque UPV, Valencia CAL/MED Workshop, 25-26 October 2007

Producer Organizations in the EU: policy issues Jose-Maria Garcia-Alvarez-Coque UPV, Valencia CAL/MED Workshop, 25-26 October 2007
NAMA, Services and TRIPS: Possible Outcomes and Implications for Mediterranean Products

NAMA, Services and TRIPS: Possible Outcomes and Implications for Mediterranean Products

Tim Josling Stanford University
Wine & Environment, salient caracters and first results the French experience Jean-Baptiste Traversac, French National Agronomy Research Institute (INRA SAD-APT Paris)

Wine & Environment, salient caracters and first results the French experience Jean-Baptiste Traversac, French National Agronomy Research Institute (INRA SAD-APT Paris)

Sustainable & Organic Winegrowing Practices: With Examples from Fetzer Vineayards Ann Thrupp, PhD Manager of Sustainability & Organic Development , Fetzer Vineyards and Associate, CA Sustainable Winegrowing Alliance October, 2007
Possible outcomes of the negotiations for developing countries and the implications for Mediterranean products by Pedro Arias Commodities and Trade Division

Possible outcomes of the negotiations for developing countries and the implications for Mediterranean products by Pedro Arias Commodities and Trade Division
POs and PDOs: A Tale of Two Marketing Models Tim Josling Stanford University

POs and PDOs: A Tale of Two Marketing Models Tim Josling Stanford University
Water Markets, Resource Issues, and Mediterranean Agriculture Leo Simon University of California, Berkeley Opening Discussion Comments

Water Markets, Resource Issues, and Mediterranean Agriculture Leo Simon University of California, Berkeley Opening Discussion Comments
Water, the Environment, and California’s Agriculture David Zilberman UC Berkeley Presented at the Cal-Med Sonoma Workshop October 25, 2007

Water, the Environment, and California’s Agriculture David Zilberman UC Berkeley Presented at the Cal-Med Sonoma Workshop October 25, 2007
Wine economics and policy comments Cal-Med Consortium Dan Sumner

Wine economics and policy comments Cal-Med Consortium Dan Sumner
Farm Bill Food and Nutrition Programs: Economic and Nutritional Impact Timothy J. Richards Paul M. Patterson Cal-Med Consortium Workshop II Washington, DC December 7, 2006

Farm Bill Food and Nutrition Programs: Economic and Nutritional Impact Timothy J. Richards Paul M. Patterson Cal-Med Consortium Workshop II Washington, DC December 7, 2006
Federal Farm Policy and Domestic Policy Support for Mediterranean Products Jay E. Noel Director, California Institute for the Study of Specialty Crops California Polytechnic State University

Federal Farm Policy and Domestic Policy Support for Mediterranean Products Jay E. Noel Director, California Institute for the Study of Specialty Crops California Polytechnic State University

Cal-Med Consortium Workshop II December 7-8 Washington D.C.
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