First Report of Basal Petiole Rot and Leaf Blight Caused by <i>Phytophthora nicotianae</i> on <i>Chamaerops humilis</i> in North America

Bomberger, Rachel A.; Duranovic, X.; Wang, S.

doi:10.1094/pdis-05-15-0582-pdn

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…P. nicotianae has been reported to infect blue Mediterranean fan palm (Chamaerops humilis var. argenta), causing basal leaf rot in Iran (Nazerian and Mirabolfathi 2013), in North America (Bomberger et al 2016), and in Italy (Faedda et al 2011). Therefore, bamboo palm, Chamaedorea erumpens; reed palm, C. seifrizii; Macarthur palm, Ptychosperma macarthurii; red sealing wax palm, Cyrtosta chysrenda; thatch palm, Thrinax sp.…”

Section: Symptoms Of the Disease In The Fieldmentioning

confidence: 99%

Molecular identification and pathogenicity of Phytophthora nicotianae-caused bud rot disease of Washingtonia palms in Saudi Arabia and use of Lysobacter enzymogenes as a bioagent in an in vitro study

Meleigi

Omar

Rokibah

et al. 2019

Egypt J Biol Pest Control

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Severe terminal bud rot disease symptoms of Washingtonia, Washingtonia robusta, palms were observed in the 5-year-old trees in a farm located at the north of Al Shehia governorate, Qassim region, Saudi Arabia. The fungus found associated with the diseased palm buds was isolated in the laboratory, and pathogenicity tests were conducted on healthy 1-year-old Washingtonia palms, at an experimental station, Agriculture and Veterinary Medicine. Pathogenicity tests showed that a single fungus caused typical symptoms of bud rot on the inoculated trees. Petiole bases and terminal buds were rotted after 5-6 weeks of inoculation. The pathogen was identified through microscopy and characterized molecularly, using internal transcribed spacer (ITS) regions of ribosomal DNA, as a fungal-like organism Phytophthora nicotianae (synonym = P. parasitica). Experiments were conducted on the biological control of the pathogen in the laboratory, and a promising RN13 isolate of Lysobacter enzymogenes was selected for further study. This study seems to be the first report of bud rot disease of Washingtonian palms caused by P. nicotianae in Saudi Arabia. Great attention should be given to this disease because it is soil borne and may be transmitted to the date palm crop.

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Section: Symptoms Of the Disease In The Fieldmentioning

confidence: 99%