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Differential Susceptibility of Prunus Germplasm (Subgenus Amygdalus) to a California Isolate of Xylella fastidiosa
Seedling peach (Prunus persica Batsch) and clonal peach-almond hybrids are popular rootstock choices for commercial almond growers in California. In this study, clonal replicates of peach and almon...
GRAPEVINE NECROTIC UNION, A NEWLY RECOGNIZED DISEASE OF UNKNOWN ETIOLOGY IN GRAPEVINES GRAFTED ON 110 RICHTER ROOTSTOCK IN CALIFORNIA
In Northern California, surveys of several vineyards planted to Vitis vinifera cv. Pinot noir (PN) clones 02A, 667, 777, and UCD 04 grafted onto the rootstock V berlandieri x V rupestris 110 Richte...
Grapevine rootstock effects on scion sap phenolic levels, resistance to Xylella fastidiosa infection, and progression of Pierce's disease
The xylem-limited bacterium Xylella fastidiosa (Xf) causes Pierce's disease (PD), an important disease of grapevine, Vitis vinifera L. Grapevine rootstocks were developed to provide increased resis...
Identification and characterization of endophytic bacteria isolated from in vitro cultures of peach and pear rootstocks
Endophytes are microorganisms which live symbiotically with almost all varieties of plant and in turn helping the plant in a number of ways. Instead of satisfactory surface sterilization approaches...
Passive Pathogen Movement via Open Xylem Conduits in Grapevine Graft Unions
In grapevines, scion-rootstock grafting is a common practice to impart pathogen resistance and to manipulate aspects of grapevine physiology, including vigor, yield, and fruit composition. Successf...
Profiling of Disease-Related Metabolites in Grapevine Internode Tissues Infected with Agrobacterium vitis
Green shoot cuttings of 10 different grapevine species were inoculated with Agrobacterium vitis to find disease-related metabolites in the grapevine. Crown galls formed 60 days after inoculation va...
Quantification and localization of hesperidin and rutin in Citrus sinensis grafted on C-limonia after Xylella fastidiosa infection by HPLC-UV and MALDI imaging mass spectrometry
A high performance liquid chromatography-ultraviolet (HPLC-UV) method was developed for quantifying hesperidin and rutin levels in leaves and stems of Citrus limonia, with a good linearity over a r...
ROOTSTOCK INFLUENCE ON OCCURRENCE OF HOMALODISCA-COAGULATA, PEACH XYLEM FLUID AMINO-ACIDS, AND CONCENTRATIONS OF XYLELLA-FASTIDIOSA
The influence of three Prunus rootstocks-a domestic plum, a domestic peach, and a peach from Brazil-on the occurrence of the vector of phony peach disease, Homalodisca coagulata, was assessed in a ...
Susceptibility of Some Common Pecan Rootstocks to Infection by Xylella fastidiosa
Pecan [Carya illinoinensis (Wangenh.) K. Koch], a hardwood tree native to North America, is grown for commercial production of nuts in southeastern, central, and western regions of the United State...
Susceptibility to Xylella fastidiosa in a First-generation Hybrid from a non-traditional Peach-Almond Cross
To facilitate development of Prunus L. rootstocks with desirable agronomic traits, domesticated peach (Prunus persica) and almond (P. dulcis) were crossed with wild almond relatives. This work repo...
The role of tyloses in crown hydraulic failure of mature walnut trees afflicted by apoplexy disorder
In the Central Valley of California, mature walnut trees afflicted with apoplexy disorder exhibit rapid and complete crown defoliation within a few weeks of symptom initiation. Symptoms are typical...
Transmission of Xylella fastidiosa through pecan rootstock
Xylella fastidiosa Wells et al., the pathogen that causes pecan [Carya illinoinensis (Wangenh.) C. Koch] bacterial leaf scorch disease, was demonstrated to be highly transmissible through graft uni...
