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2021

Newsletter Archive

To request a back issue of newsletters from 2018 and earlier, please contact Brown Miller Communications by phone at (925) 370-9777 or send a request via email.

2020

2019

2018

  • Fall Articles
    • New Field Trials Planted in Northern California
    • Update on Traditional Breeding of PD Resistance into Winegrapes
    • Functional Characterization of pilG, a Key Virulence Gene, and Evaluation of the Effects of Anti-Virulence Inhibitors on the Virulence of Xylella fastidiosa
    • Resistance to Grapevine Fanleaf Virus in Rootstocks
    • Timing of Field Transmission of Grapevine Red Blotch Virus
    • 2018 Pierce's Disease Research Symposium
  • Summer Articles
    • PD/GWSS Board Funds 15 Research Projects
    • A Few Past and Current Research Projects
    • Mapping Pierce's Disease and Vector Populations in the Southern San Joaquin Valley and Developing a Dynamic Model to Assess Management Strategies
    • Quantifying Vine Mealybug Spatio-Temporal Dynamics: Assessing Invasion Risk to Refine Management Strategies
    • A Study on the Impact of Individual and Mixed Leafroll Infections on the Metabolism of Ripening Wingrape Berries
    • Cooperative Nursery Program is Key to Preventing the Spread of GWSS
  • Spring Articles
    • Foundation Plant Services Stepping Up Testing After Red Blotch Find
    • CDFA Statewide Survey and Detection Gears Up
    • Greenhouse Evaluation of Grapevine Microbial Endophytes and Fungal Natural Products for Control of PD
    • Insecticide Resistance in the Glassy-winged Sharpshooter: Using Historical Use Patterns to Inform Future Management Strategies
    • Assessing Effects of Seasonality on the Epidemiology of PD in the Southern San Joaquin Valley
    • New Officers for the PD/GWSS Board
  • Winter Articles
    • GWSS Area-Wide Program Update: Kern and Tulare Counties
    • Santa Clara County Free of GWSS for the First Time in 17 Years
    • Evaluating Potential Shifts in Pierce’s Disease Epidemiology
    • A Study on the Impact of Individual and Mixed Leafroll Infections on the Metabolism of Ripening Wingrape Berries
    • Quantifying Vine Mealybug Spatio-Temporal Dynamics: Assessing Invasion Risk to Refine Management Strategies
    • 2017 Pierce's Disease Research Progress Reports Available Online

2017

  • Fall Articles
    • Isolated GWSS Finds Show Importance of Ongoing Vigilance
    • New Videos Added to the PD/GWSS Board Channel
    • High Throughput Live Cell Screen of Small Molecules Targeting the ToIC Efflux Pump of Xylella fastidiosa
    • Timing of Field Transmission of Grapevine Red Blotch-Associated Virus
    • Molecular Breeding Support for the Development of Pierce's Disease- Resistant Winegrapes
    • Governor Brown Signs State Budget With $5 Million Designated for PD Control Program
  • Summer Articles
    • UC Davis Announces Pre-Release of Five New PD-Resistant Winegrape Cultivars
    • Researchers Gather to Find Solutions To Grapevine Viruses
    • Monitoring for Insecticide Resistance in the GWSS in California
    • The Riverside County GWSS Program in the Temecula Valley
    • Biology and Spread of Grapevine Red Blotch-Associated Virus
    • Proper Training Key to Success of the ATP Program
  • Spring Articles
    • Modified Rootstocks Could Help Prevent PD
    • The Key to Stopping New GWSS Infestations in Uninfested Areas
    • Monitoring Glassy-Winged Sharpshooters and Pierce's Disease In Kern County, California
    • Searching for Potential Vectors of Grapevine Red Blotch-Associated Virus
    • Development of a Biological Control for Pierce's Disease
    • CDFA PD Control Program Nursery Stats for 2016
  • Winter Articles
    • Determining What 'Certified Plant Material' Means to Growers
    • New Logo for the PD/GWSS Board
    • Evaluation of Commercial Ant Baits as a Component of an Integrated Pest Management Program for Vine Mealybug
    • Assessing Pierce's Disease Spread in Grape Lines With Novel Defensive Traits
    • Management of Insecticide Resistance in Glassy-Winged Sharpshooter Populations Using Toxicological, Biochemical and Genomic Tools
    • From Phages to Mealybugs - There Was Much to Discuss During the 2016 PD Research Symposium

2016

  • Fall Articles
    • North Coast PD Study Underway
    • EGVM Eradicated from California
    • Evaluation of Natural Products Isolated from Grapevine Fungal Endophytes for Control of PD
    • Brown Marmorated Stink Bug Risk and Impacts in Western Vineyards
    • Evaluation of Commercial Ant Baits as a Component of an Integrated Pest Management Program for Vine Mealybug
    • 2016 Pierce's Disease Research Symposium to Be Held in San Diego
  • Summer Articles
    • PD/GWSS Board Gets a Taste of Wine Made From PD-Resistant Grapevines
    • PD Board Funding for PD and Other Research Projects
    • Transgenic Rootstock-Mediated Protection of Grapevine Scions by Single and Stacked DNA Constructs
    • Continued Field Evaluation of Diffusible Signal Factor Inducing Grape for Control of Pierce's Disease
    • Selective Disruption of Glassy-winged Sharpshooter Maturation and Reproduction by RNA Interference
    • State Bill Introduced to Boost Funding for PD Control Program
  • Spring Articles
    • Recently Identified Enzyme May Hold New Insight into Pierce's Disease Grapevine Damage
    • GWSS Eggs Found on Nursery Shipments in Napa and Sonoma
    • Substrate-Borne Vibrational Signals in Intraspecific Communication of the Glassy-winged Sharpshooter
    • Field Evaluation of Grape Plants Expression Potential Protective DNA Sequences Effective Against Pierce's Disease
    • Biological Control of Pierce's Disease of Grapevines in the UC Riverside Vineyard With a Benign Strain of Xylella fastidiosa
    • Nursery Rejections Down in 2015 - Plant Inspections are Working
  • Winter Articles
    • What Winegrape Growers Should Know About Red Blotch
    • PD-Resistant Vines Becoming a First Line of Defense Against PD
    • The Riverside County Glassy-winged Sharpshooter Program in the Temecula Valley
    • Whole Genome Sequence Analyses of Xylella fastidiosa Pierce's Disease Strains From Different Geographical Regions
    • Characterization of Different California Strains of Xylella fastidiosa by Fatty Acid Methyl Ester Analysis

2015

  • Fall Articles
    • European Grapevine Moth Update
    • PD/GWSS Board Travels to Bakersfield - Concerned About Increases in PD
    • Blocking Xylella fastidiosa Transmission
    • Map-Based Identification and Positional Cloning of Xylella fastidiosa Resistant Genes from Known Souces of Pierce's Disease Resistance in Grapes
    • Management of Insecticide Resistance in Glassy-Winged Sharpshooter Populations Using Toxicological, Biochemical and Genomic Tools
    • Researchers Determined to Discover Why Growers Are Seeing More PD
  • Summer Articles
    • Pierce's Disease - The Big Picture
    • PD/GWSS Board Recommends Funding Eleven Research Projects
    • Vector Inoculation of Xylella fastidiosa: New Evidence Suggests Sharpshooters Can Be "Flying Syringes"
    • Defining the Role of Secreted Virulence Proteins LesA and PrtA in the Pathobiology of Xylella and in the Development of Pierce's Disease
    • Elucidating the Process of Cell-Cell Communication in Xylella fastidiosa to Achieve Pierce's Disease Control by Pathogen Confusion
    • It's Official - PD/GWSS Referendum Passes
  • Spring Articles
    • Breaking the GWSS Sound Barrier
    • Tasting the Future
    • Identification of a New Virulence Factor Required for Pierce's Disease and Its Utility in Development of a Biological Control
    • Role of Cold Shock Proteins in Xylella fastidiosa Virulence
    • Transgenic Rootstock-Mediated Protection of Grapevine Scions by Dual Stacked DNA Constructs
    • Is the PD/GWSS Referendum Over Yet?
  • Winter Articles
    • Is There an Insect Vector for Red Blotch?
    • Researchers Present Their Work at the PD Research Symposium
    • Substrate-Borne Vibrational Signals in Intraspecific Communication of the Glassy-Winged Sharpshooter
    • Elucidating the Process of Cell-to-Cell Communication in Xylella fastidiosa to Achieve Pierce's Disease Control by Pathogen Confusion
    • Monitoring for Insecticide Resistance in the Glassy-Winged Sharpshooter in California
    • The Vote Is Coming! The Vote Is Coming!

2014

  • Fall Articles
    • Governor Signs PD/GWSS Bill
    • Long-Time PD Researcher Bruce Kirkpatrick Retires
    • Scientists Decipher Stink Bug Aggregation Pheromone
    • Anterior Foregut Microbiota of the GWSS Explored Using Deep 16S rRNA Gene Sequencing From Individual Insects
    • Identification of a New Virulence Factor Required for Pierce's Disease and Its Utility in Development of a Biological Control
    • Characterization of Xf Genes Required for Pathogenicity
    • Tastings of Wine Made From PD-Resistant Winegrapes
  • Summer Articles
    • PD/GWSS Board Designates Two Pests and One Disease as Threats to California's Vineyards
    • New and Continuing Research Projects Get Funded
    • Some Facts on PD/GWSS Board's Newly Designated Disease & Pests
    • The Riverside County Glassy-winged Sharpshooter Program in the Temecula Valley
    • Rootstock Effects on the Progression of PD Symptom Development and Possible Mechanisms
    • Optimizing Grape Rootstock Production and Export of Inhibitors of Xf Polygalacturonase Activity
    • Inspectors Find GWSS Eggs in Nursery Shipments
  • Spring Articles
    • Update on Field Trials of PD-Resistant Grapevines
    • Pierce's Disease Legislation Introduced
    • Board Hires Researcher Liaison to Advise on Research Activities
    • Molecular and Functional Characterization of the Putative Xylella fastidiosa Resistance Gene(s) From Vitis arizonica
    • Greenhouse Evaluation of Grapevine Fungal Endophytes and Fungal Natural Products Antagonistic to Xylella fastidiosa for Control of PD
    • Suitability of Fertilized and Unfertilized Eggs of the Glassy-winged Sharpshooter for the Egg Parasitoid Gonatocerus morrilli
    • Keeping GWSS Out of Your Vineyards
  • Winter Articles
    • Research Breakthroughs Reported During 2013 PD Research Symposium
    • The Eradication of GWSS in SLO County
    • Virulent Phages of Xylella fastidiosa: Phophylactic and Therapeutic Evaluation
    • Blocking Xylella fastidiosa Transmission
    • Continued Field Evaluation of Grapevines Producing Diffusible Signal Factor for Control of PD
    • Getting Solutions to PD from the Lab to Growers​

2013

  • Fall Articles
    • PD-Resistant Winegrapes Get Tested in the Eye of the Storm
    • GWSS Area-Wide Treatment Program Update: Kern and Tulare Counties
    • Final Report - Enhancing Control of Pierce's Disease by Augmenting Pathogen Signal Molecules
    • Final Report - Vouchering Specimens of Egg Parasitoids of the GWSS Collected by the CDFA Pierce's Disease Biological Control Program in California and Texas A&M in Texas
    • Biological Control of Pierce's Disease of Grapevine with EB92-1, a Benign Strain of Xylella fastidiosa
    • Vineyard Tour and Wine Tasting with Dr. Andy Walker
  • Summer Articles
    • Out of Nowhere Comes Red Blotch
    • CDFA's PD Control Program Meeting the Changes and Challenges
    • New Video - Fighting the GWSS Infestation in Fresno
    • Development of a Grape Tissue Culture and Transformation Platform for the California Grape Research Community
    • UPDATE - Field Evaluation of Grafted Grapevine Lines Expressing Pear Polygalacturonase-Inhibiting Proteins
    • Identification and Utilization of Cold Temperature Induced Grapevine Metabolites to Manage Pierce's Disease
    • GWSS Nursery Subcommittee Helps Keep Industry Up-to-Date
  • Spring Articles
    • Designating a Winegrape Pest or Disease Is a Deliberative Process
    • Fighting the GWSS Infestation in the City of Fresno
    • New Research Video Online
    • The Oxidative Stress Response: Identifying Proteins Critical for Xylella fastidiosa Survival in Grapevines
    • Genetic Mapping of Xylella Fastidiosa Resistant Genes in Grape Germplasm from the Southern United States
    • Field Evaluation of Grape Plants Expressing PR1 and UT456 Transgenic DNA Sequences for Protection Against Pierce's Disease
    • 2012 Nursery Program Review
  • Winter Articles
    • RSAP Helps to Guide Board's Research
    • EGVM Quarantine Area Reduced
    • GWSS Biological Control Update
    • Greenhouse Evaluation of Grapevine Fungal Endophytes and Fungal Natural Products Antagonistic to Xylella fastidiosa for Control of PD
    • Development and Use of a Recombinant Virus for Controlling GWSS
    • Blocking Xylella fastidiosa Transmission
    • Virginia Creeper Leafhopper is Latest Vineyard Pest to Invade California Vineyards

2012

  • Fall Articles
    • Knowing Your Enemy is Half the Battle
    • PD Symposium to Take the Year Off
    • Are the Hormones of the Glassy-Winged Sharpshooter a Viable Insecticide Target?
    • Can Pierce's Disease Resistance from Vitis vinifera Be Transferred From a Resistant Rootstock to a Susceptible Scion?
    • Linking Within-Vineyard Sharpshooter Management to Pierce's Disease Spread
    • Wines from PD-Resistant Grapes Are Here for the Tasting
  • Summer Articles
    • Strange Looking Plants Could Lead to Better Winegrape Vines
    • PD/GWSS Board Considers New Threats
    • Biological Control of Pierce's Disease (PD) of Grapevine with Benign Strains of Xylella fastidiosa - UPDATE
    • Report on Field Trials
    • Blocking Xylella fastidiosa Transmission
    • Budget Cuts and the PD Control Program
  • Spring Articles
    • EGVM Quarantine Lifted in Four Counties
    • Nursery Training Key to Preventing Spread of GWSS
    • PD/GWSS Board Partners with UGMVE on Research RFP
    • Identification and Utilization of Cold Temperature Induced Grapevine Metabolites to Manage PD
    • Linking Within-Vineyard Sharpshooter Management to PD Spread
    • Development and Use of a Recombinant Coagulata Virus-1 for Controlling GWSS
    • What Role Do Ornamental Plants Play in Spreading PD to Your Vines?
    • New Video About Producing Parastic Wasps Online
  • Winter Articles
    • Defeating the EGVM in Fresno a Combined Effort
    • The Never-Ending Battle Against GWSS
    • N-Acetyl-L-Cysteine, A New Perspective for Xylella Fastidiosa Control
    • Grape Rootstock Variety Influence on Pierce's Disease Symptoms
    • Effects of Plant Water Stress and Temperature on Glassy-Winged Sharpshooter Feeding in Relation to Transmission of Xylella Fastidiosa
    • Researchers Present Their Work at 2011 PD Symposium

2011

  • Fall Articles
    • Monitoring GWSS Numbers Very Important to Temecula's Grape Industry
    • GWSS Infestations Keep County Ag Commissioners on the Alert
    • Development of Effective Monitoring Techniques for Sharpshooters and their Parasitoids
    • Linking Within Vineyards Sharpshooter Management to Pierce's Disease Spread
    • Understanding the Dynamics of Neonicotinoid Insecticidal Activity Against the Glassy-Winged Sharpshooter: Development of Target Thresholds in Grapevines
    • PD Research Symposium Registration Opens
  • Summer Articles
    • GWSS, EGVM - Whatever Comes Next - the Board is Ready
    • New Members for RSAP
    • Do Cell Wall Structures Limit Xylella Fastidiosa Distribution in Inoculated, PD Susceptible and Resistant Grapevines?
    • Linking Within-Vineyard Sharpshooter Management to Pierce's Disease Spread
    • Genomic Sequences of Biocontrol Strain EB92-1 and Identification of Elicitor(s) of Effective Defense in Winegrapes Against PD
    • New Research Videos Bring Field Trial Work to You
  • Spring Articles
    • Efforts to Stop the Spread of GWSS Continue
    • San Luis Obispo County GWSS Update
    • What Grape Growers SHould Know About Home Winemaking and EGVM/li>
    • Survey of Green Sharphshooter Populations in and Near Vineyards in the San Joaquin Valley
    • Robust One-Hour Genotyping of Xylella Fastidiosa Strains Using Fret Probes
    • Are Natural Enemies Controlling GWSS Populations in Southern California?
    • Joing Information Center Established for EGVM Control
  • Winter Articles
    • Slow Season? What Slow Season?
    • 2010 Pierce's Disease Research Symposium
    • Survey of Green Sharphshooter Populations in and Near Vineyards in the San Joaquin Valley
    • Are Natural Enemies Controlling GWSS Populations in Southern California?
    • Robust One-Hour Genotyping of Xylella Fastidiosa Strains Using Fret Probes
    • Joint Information Center Established for EGVM Control

2010

  • Fall Articles
    • Two Million Wasps and Counting
    • PD/GWSS Board Passes First European Grapevine Moth Research Proposal
    • Exploiting Pathogen Signal Molecules for Control of Pierce's Disease
    • Testing of Signal Peptides and Anti-microbial Proteins for Rapid Clearance of Xf
    • Biological Control of Pierce's Disease with Benign Strains of Xf
    • PD Control Program Update
  • Summer Articles
    • PD/GWSS Referendum Passes What's Next?
    • Field Trials Get Underway Around the State
    • Improved Detection, Monitoring and Management of the Glassy-Winged Sharpshooter
    • Development of Effective Monitoring Techniques for Sharpshooters and their Parasitoids
    • Understanding the Dynamics of Neonicotinoid Insecticidal Activity Against GWSS on Target Thresholds in Grapevines
    • Area-wide Control Program Update
  • Spring Articles
    • 100 Days War
    • Rapid Response - Keeping GWSS in Check
    • Exploiting Pathogen Signal Molecules for Control of PD
    • Controlling Programmed Cell Death in Grapevines
    • Management of PD by Interfering with the Bacteria's Ability to Move within the Plant's Xylem Tissue
    • In-Plant Testing of Signal Peptides and Anti-Microbial Proteins for Rapid Clearance of Xylella Fastidiosa
    • Rapid Response - Keeping GWSS in Check
  • Winter Articles
    • PD/GWSS Research - Getting Results
    • New Changes Allow Research and Outreach on Additional Winegrape Pests
    • Update Breeding Pierce's Disease Resistant Winegrapes
    • The Economics of Pierce's Disease
    • Grape Rootstock Variety Influence on Pierce's Disease Symptoms in Chardonnay
    • The Vote is Coming!

2009

  • Fall Articles
    • Eradicating GWSS in Foothill Farms
    • Fighting Pierce's Disease - Keys to Success
    • Seasonal Transmission of Xylella fastidiosa by the Glassy-Winged Sharpshooter from Grapevines Infected for Various Lengths of Time
    • Are Glassy-Winged Sharpshooter Populations Regulated in California?
    • Analysis of the Bacterial Community Associated with Sharpshooters, Insect Vectors of Xylella fastidiosa
    • Governor Signs SB 2, Extends PD Program
  • Summer Articles
    • Why the Glassy-winged Sharpshooter Isn't Everywhere in California
    • 2009 PD Research Symposium
    • Board Votes for PD Assessment to Remain at $1
    • Enabling Technologies for Grape Transformation
    • The Economics of Pierce's Disease
    • Identifying Similarities and Differences Across the Three Leafhopper Vectors of Xylella Fastidiosa
  • Spring Articles
    • What Form Will the Cure for Pierce's Disease Take?
    • Pierce's Disease - A Decade of Progress
    • Should Neoclassical Biological Control Agents from Argentina be Released in California for Control of GWSS?
    • Which Grape Varietals are Sources of PD Spread
    • Management of PD by Interfering with the Bacteria's Ability to Move Within the Plant's Xlem Tissue
    • Temecula - Ten Years Later
  • Winter Articles
    • PD/GWSS Board Grower Funded - Grower Directed
    • 2008 Symposium Wrap-Up
    • Assessing the Post-Winter Threat of GWSS Populations
    • Control of Pierce's Disease by Methods Involving Pathogen Confusion
    • Age Determination and the Red Pigment in the Wings of GWSS
    • Does Severe Pruning Work?

2008

  • Fall Articles
    • This Won't Hurt a Bit!
    • "Best Winery in California," Thanks to PD/GWSS Board
    • The Benefits and Costs of Alternative Policies for the Management of Pierce's Disease
    • Functional Testing and Delivery of Pierce's Disease-Specific Promoters from Grape
    • Significance of Riparian Plants in the Epidemiology of Pierce's Disease
    • Pierce's Disease Control Program Update
  • Summer Articles
    • Nursery Treatment Program to Stop GWSS Gets the Green Light
    • California Budget Woes and Pierce's Disease
    • What the Farm Bill Means to Growers
    • Genomic Sequencing, Discovery and Characterization of Viral Pathogens in the Glassy-winged Sharpshooter
    • Finding Pierce's Disease Infected Vines in Large Vineyards: A Proposed Pierce's Disease Sampling Program
    • Environmentally Created Immunity Against Pierce's Disease
    • 2008 Pierce's Disease Research Symposium
  • Winter Articles
    • 7th Annual Research Symposium - New Results Stimulate New Ideas
    • RNA-Interference and Control of GWSS and Other Leafhopper Vectors of Pierce's Disease
    • Faster DNA Test Developed to Pinpoint Whether or Not Grapevines Carry Xylella Fastidiosa
    • Assessment of the Process of Movement of Xylella fastidiosa within Susceptible and Resistant Grape Varieties
    • Ed Weber Worked Closely with Napa Growers to Keep Pierce's Disease at Bay

2007

  • Fall Articles
    • Joint Research Project Leads to PD/GWSS Management Method
    • Dispersal & Movement of the Glassy-Winged Sharshooper and Associated Natural Enemies in a Continuous, Deficit-Irrigated Agricultural Landscape
    • Design of Chimeric Anti-Microbial Proteins for Rapid Clearance of Xylella fastidiosa
    • Ecological Basis of Xylella fastidiosa Transmission to Grapevines/li>
    • PD/GWSS Board Recent Actions
  • Summer Articles
    • More to Raising Predatory Wasps Than Meets the Eye
    • Pierce's Disease Research Symposium Brings Together Research Community
    • PD Research Awarded Best Viticulture Paper by ASEV
    • Exploration for Biological Control Agents in the Native Range of the Glassy-Winged Sharpshooter
    • Documentation & Characterization of Xylella fastidiosa Strains in Landscape Hosts
    • Compatibility of Select Insecticides with Natural Enemies of GWSS & Other Pests
    • Research Projects Funded by Pierce's Disease Assessment
  • Spring Articles
    • It Was Cold - But Was it Cold Enough?
    • Dr. Andy Walker Talks about the New PD Resistant Winegrape Vines
    • Management of Pierce's Disease in Grapevines by Interfering with Cell-to-Cell Communication by Xylella Fastidiosa
    • Laboratory and Field Evaluations of Neonicotinoid Insecticides Against the Glassy-Winged Sharpshooter
    • Host Plant Preference and Natural Infectivity of Insect Vectors on Common Weeds Known to Host Xylella fastidiosa
    • New PD/GWSS Board Chair Ben Drake
  • Winter Articles
    • San Luis Obispo - Still GWSS Free
    • Many Facets to New PD/GWSS Research Director
    • Identifying Key Predators of the Varios GWSS Life Stages
    • Magnetic Resonance Imaging: a Non-Destructive Approach for Detection of Xylem Blockages in Xylella fastidiosa (Pierce's Disease) Infected Grapevines
    • Reproductive Biology and Physiology of Female Glassy-Winged Sharpshooters: Morphology and Vitellogenesis Cycles
    • Pierce's Disease Research Symposium Focuses on Progress