Identification of Species in the Botryosphaeriaceae Family Causing Stem Blight on Southern Highbush Blueberry in Florida

Stem blight of southern highbush blueberry (SHB) results in premature plant mortality and has been identified by Florida blueberry growers as the economically most important disease for the industry. In 2007, plants with stem blight and dieback symptoms were sampled at 4-month intervals from two far...

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Veröffentlicht in:Plant disease. - 1997. - 94(2010), 8 vom: 31. Aug., Seite 966-971
1. Verfasser: Wright, A F (VerfasserIn)
Weitere Verfasser: Harmon, P F
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article
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520 |a Stem blight of southern highbush blueberry (SHB) results in premature plant mortality and has been identified by Florida blueberry growers as the economically most important disease for the industry. In 2007, plants with stem blight and dieback symptoms were sampled at 4-month intervals from two farms located in Alachua and Polk Co., FL. In all, 30 cane samples (stem blight) and 30 crown segments (dieback) were collected at each sample date and each location. In total, 360 samples were collected; fungal species in the family Botryosphaeriaceae were isolated from 85% of the samples. Based on morphology and phylogenetic analysis of the internal transcribed spacer region and elongation factor 1-α (EF1-α) sequences, two dominant species recovered from SHB in Florida were identified: Lasiodiplodia theobromae and Neofusicoccum ribis. Species isolation was independent of location, symptom type, and time of year. Additional samplings are needed to investigate population change over multiple years and in the rest of the southeastern United States. Breeding for resistance and management of stem blight and dieback in Florida should focus on these two fungal species 
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