Crown Gall of Peaches from Maryland, South Carolina, and Tennessee and Problems with Biological Control

Tropical soda apple is a prickly shrub native to South America. First reported in Glades Co., Florida in 1988, it later spread to Georgia, Alabama, Louisiana, Texas, Mississippi, Tennessee, North Carolina, and South Carolina. It is a major problem in pastures and conservation areas. Negative impacts of tropical soda apple include reduction of cattle stocking rates, competition with native plants, and the costs associated with its control. Dense thickets of the weed also can disrupt the movement of wildlife. This 4-page fact sheet provides a summary of the major steps of the successful biological control program against tropical soda apple in Florida. The article covers the importance of the weed, identification and biology of the biological control agent, rearing and release efforts, establishment and impact, and efforts to communicate the outcomes of the program to stakeholders. Written by R. Diaz, J. Medal, K. Hibbard, A. Roda, A. Fox, S. Hight, P. Stansly, B. Sellers, J. Cuda and W. A. Overholt, and published by the UF Department of Entomology and Nematology, November 2012. http://edis.ifas.ufl.edu/in971

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Biological Control of Crown Gall on Peach and Cherry Rootstock Colt by Native Agrobacterium radiobacter Isolates~!2009-05-11~!2009-08-25~!2010-02-11~!

The Open Horticulture Journal ◽

10.2174/1874840601003010001 ◽

2010 ◽

Vol 3 (1) ◽

pp. 1-10 ◽

Cited By ~ 6

Author(s):

A. K. Gupta ◽

Kishore Khosla ◽

S. S. Bhardwaj ◽

Aman Thakur ◽

Sapna Devi ◽

...

Keyword(s):

Biological Control ◽

Crown Gall ◽

Agrobacterium Radiobacter

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Insight into inducing disease resistance with Allorhizobium vitis strain ARK-1, a biological control agent against grapevine crown gall disease

European Journal of Plant Pathology ◽

10.1007/s10658-021-02440-3 ◽

2022 ◽

Author(s):

Akira Kawaguchi ◽

Yoshiteru Noutoshi

Keyword(s):

Biological Control ◽

Disease Resistance ◽

Crown Gall ◽

Biological Control Agent ◽

Control Agent ◽

Crown Gall Disease ◽

Allorhizobium Vitis ◽

Grapevine Crown Gall ◽

Insight Into

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Antagonistic potential of native agrocin-producing non-pathogenic Agrobacterium tumefaciens strain UHFBA-218 to control crown gall in peach

Phytoprotection ◽

10.7202/1040509ar ◽

2017 ◽

Vol 97 (1) ◽

pp. 1-11

Author(s):

Aditi Sharma ◽

A. K. Gupta ◽

K. Khosla ◽

Rishi Mahajan ◽

Bharti ◽

...

Keyword(s):

Biological Control ◽

Agrobacterium Tumefaciens ◽

Crown Gall ◽

Room Temperature ◽

Biological Control Agent ◽

Control Agent ◽

Stone Fruits ◽

Copper Oxychloride ◽

Antagonistic Potential ◽

Different Doses

A non-pathogenic agrocin-producing native isolate ofAgrobacterium tumefaciensstrain UHFBA-218 was tested as a biological control agent against the peach crown gall. This strain was compatible with all the recommended pesticides used in stone fruits in the integrated pest management (IPM) module, except for copper oxychloride, which was detrimental to its growth. Upon artificial co-inoculation of 4-wk-old plants of tomato var. Solan Gola withA. tumefaciensstrain UHFBA-218 and tumorigenicA. tumefaciensstrain Peach 2E-10, out of the 27 isolates recovered, six were transconjugants showing selective acquisition of tumorigenic factors as made evident by amplification withiptandvirD2primers, whereas the rest of the isolates did not acquire any of these tumorigenic factors. A white stone powder-based formulation of this isolate (103.3 × 108cfu g-1) retained appreciable viability for up to 6 months at room temperature. When peach roots and seeds were soaked in cell suspensions of different doses of a white stone powder-based bioformulation of UHFBA-218 before planting in the field, the number of plants with tumours was reduced, with the lowest incidence of crown gall being observed in the 0.1% UHFBA-218 root dip treatment, i.e. 1.48% and 0.80% during the years 2013 and 2014, respectively. No incidence of crown gall was observed in the three seed dip treatments, i.e. 30-min dip in UHFBA-218 followed by 1 h of shade drying, stratified seeds dipped for 30 min in 0.1% suspensions of strains UHFBA-218 or K84 followed by 1 h of shade drying before sowing, as compared with 14.76% incidence in untreated plants.

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