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United States Department of Agriculture (USDA) 2012

INTEGRATED STRATEGIES FOR ADVANCED MANAGEMENT OF FRUIT, NUT, AND OAK TREE DISEASES

Fruit Nut Oak Diseases

United States Department of Agriculture (USDA) Research, Education & Economics Information System (REEIS)

Titre : INTEGRATED STRATEGIES FOR ADVANCED MANAGEMENT OF FRUIT, NUT, AND OAK TREE DISEASES

Identification : 2032-22000-015-00D

Pays : Etats Unis

Durée : May 9, 2012 à May 8, 2017

Domaine : Pathogens and Nematodes Affecting Plants

Partenaire : AGRICULTURAL RESEARCH SERVICE BERKELEY,

Objectif
1 : Characterize the etiology, biology, and ecology of key phytopathogenic agents and their interactions with economically important tree and grapevine species. Subobjective 1.1 - Determine key species of Phytophthora and Pythium contributing to root and crown rot diseases on cultivated Prunus and Juglans species in the Central Valley of California. Subobjective 1.2 - Identify member(s) of soilborne microbial communities that mediate Prunus replant disease. Subobjective 1.3 - Characterize ecology of soil-borne populations of virulent and avirulent Agrobacterium tumefaciens under nursery conditions. Subobjective 1.4 - Determine the agent responsible for grapevine necrotic union disease by characterizing the viromes in clones of Pinot noir and rootstock 110R.
2 : Characterize the genetic structure and diversity of key pathogens of economically important tree and grapevine species. Subobjective 2.1 - Characterize the genetic and phenotypic diversity of Agrobacterium tumefaciens strains occurring in CA production and nursery environments. Subobjective 2.2 - Identify the causal agent of a new leafroll-like disease spreading in California vineyards.
3 : Develop cost-effective management strategies for key diseases of economically important tree and grapevine species. Subobjective 3.1 - Evaluate genetic resistance of almond, peach and walnut rootstock germplasm to Phytophthora species. Subobjective 3.2 - Evaluate genetic resistance of almond and peach rootstock germplasm to the Prunus replant disease complex. Subobjective 3.3 - Evaluate genetic resistance of Juglans species half-sib and interspecific hybrids to Agrobacterium tumefaciens for rootstock development. Subobjective 3.4 - Develop protocols for production of crown-gall-free walnut Paradox hybrid rootstock without reliance on pre-plant soil fumigation with methyl bromide. Subobjective 3.5 - Develop interstocks to avoid walnut blackline disease caused by Cherry leafroll virus. Subobjective 3.6 - Evaluate Vitis vinifera germplasm collection maintained by USDA National Clonal Germplasm Repository and commercially available grapevine rootstocks for resistance to Grapevine leafroll associated virus 3. 4 : Characterize the biology, genetics and genomics of Phytophthora ramorum and other oomycetes to facilitate identification of pathogenicity related genes.
Subobjective 4.1 - Characterize genetic and epigenetic interactions between P. ramorum and diverse host species. Subobjective 4.2 - Characterize the mode of action of phosphonate using a transcriptomics approach.

Présentation : USDA

Page publiée le 24 septembre 2015, mise à jour le 14 novembre 2017