e-journal

Temporal Patterns in Appearance of Sooty Blotch and Flyspeck Fungi on Apples

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Abstract
Sooty blotch and flyspeck (SBFS) is a complex of about 80 fungal species that blemish the surface of apple fruit in humid regions worldwide. The dark colonies become visible in mid- to late summer, educing the value of fresh fruit. Although many SBFS species can co-occur in the same orchard and even on the same apple, little is known about temporal patterns of these species, including the timing of
colony appearance. To test the hypothesis that colonies of SBFS species appear on apples at haracteristic times during the growing season, 50 apples were monitored weekly at three Iowa orchards in 2006 and six orchards in 2007 and 2008. However, a mean of 24.3 apples per orchard was assessed at
harvest because of apple drop throughout the season. Colonies weremarked with colored pens as they appeared. After harvest and after storage of apples at 2 °C for 3months, SBFS colonies on each fruit were counted and classified bymorphology, and a representative subset of colonies was excised from the fruit and preserved on dried peels for species identification using rDNA. Seventeen species were identified. Stomiopeltis spp. RS1 and RS2 appeared on apples 10 to 14 days before other SBFS taxa.
Dissoconium aciculare was generally the last species to appear on apple fruit, and it continued to appear during postharvest storage. The most prevalent taxa in Iowa orchards were also the most abundant. Diversity of SBFS fungi in an orchard was positively correlated with cumulative hours of surface wetness hours due to rainfall or dew, which is believed to favor growth of SBFS fungi. Species-specific information about temporal patterns of appearance on apple fruit may lead to improved SBFS management strategies

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Informasi Detail

Judul Seri

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No. Panggil

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Penerbit

: Springer-Verlag., 2012

Deskripsi Fisik

Microb Ecol (2012) 64:928–941 DOI 10.1007/s00248-012-0089-8

Bahasa

English

ISBN/ISSN

1432-184X

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

EKOLOGI
MIKROBIOLOGI

Info Detail Spesifik

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Pernyataan Tanggungjawab

ETY

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