Diaporthe Seed Decay of Soybean [Glycine max (L.) Merr.] Is Endemic in the United States, But New Fungi Are Involved

Diaporthe seed decay can compromise seed quality in soybean [Glycine max (L.) Merr.] in the warm and humid production areas of the United States during crop maturation. In the current study, 45 isolates of Diaporthe were recovered from seed sampled from soybean fields affected by Diaporthe-associate...

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Veröffentlicht in:Plant disease. - 1997. - 105(2021), 6 vom: 24. Juni, Seite 1621-1629
1. Verfasser: Petrović, Kristina (VerfasserIn)
Weitere Verfasser: Skaltsas, Demetra, Castlebury, Lisa A, Kontz, Brian, Allen, Tom W, Chilvers, Martin I, Gregory, Nancy, Kelly, Heather M, Koehler, Alyssa M, Kleczewski, Nathan M, Mueller, Daren S, Price, Paul P 3rd, Smith, Damon L, Mathew, Febina M
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Diaporthe Phomopsis seed decay field crops fungi new taxa oilseeds and legumes pathogen diversity soybean taxonomy
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245 1 0 |a Diaporthe Seed Decay of Soybean [Glycine max (L.) Merr.] Is Endemic in the United States, But New Fungi Are Involved 
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520 |a Diaporthe seed decay can compromise seed quality in soybean [Glycine max (L.) Merr.] in the warm and humid production areas of the United States during crop maturation. In the current study, 45 isolates of Diaporthe were recovered from seed sampled from soybean fields affected by Diaporthe-associated diseases in eight U.S. states in 2017. The isolates obtained belonged to 10 species of Diaporthe based on morphology and phylogenetic analyses of the internal transcribed spacer, partial translation elongation factor 1-α, and β-tubulin gene sequences. The associated species included D. aspalathi, D. caulivora, D. kongii, D. longicolla, D. sojae, D. ueckerae, D. unshiuensis, and three novel fungi, D. bacilloides, D. flavescens, and D. insulistroma. One isolate each of the 10 species was examined for pathogenicity on seed of cultivar Sava under controlled conditions. Seven days postinoculation, significant differences in the percentages of decayed seeds and seedling necrosis were observed among the isolates and the noninoculated control (P < 0.0001). While the isolates of D. bacilloides, D. longicolla, and D. ueckerae caused a significantly greater percentage of decayed seeds (P < 0.0001), the isolate of D. aspalathi caused the greatest seedling necrosis (P < 0.0001). The observation of new fungi causing Diaporthe seed decay suggests the need for a more comprehensive survey in U.S. soybean producing areas since members of the genus Diaporthe appear to form a complex that causes seed decay 
650 4 |a Journal Article 
650 4 |a Diaporthe 
650 4 |a Phomopsis seed decay 
650 4 |a field crops 
650 4 |a fungi 
650 4 |a new taxa 
650 4 |a oilseeds and legumes 
650 4 |a pathogen diversity 
650 4 |a soybean 
650 4 |a taxonomy 
700 1 |a Skaltsas, Demetra  |e verfasserin  |4 aut 
700 1 |a Castlebury, Lisa A  |e verfasserin  |4 aut 
700 1 |a Kontz, Brian  |e verfasserin  |4 aut 
700 1 |a Allen, Tom W  |e verfasserin  |4 aut 
700 1 |a Chilvers, Martin I  |e verfasserin  |4 aut 
700 1 |a Gregory, Nancy  |e verfasserin  |4 aut 
700 1 |a Kelly, Heather M  |e verfasserin  |4 aut 
700 1 |a Koehler, Alyssa M  |e verfasserin  |4 aut 
700 1 |a Kleczewski, Nathan M  |e verfasserin  |4 aut 
700 1 |a Mueller, Daren S  |e verfasserin  |4 aut 
700 1 |a Price, Paul P  |c 3rd  |e verfasserin  |4 aut 
700 1 |a Smith, Damon L  |e verfasserin  |4 aut 
700 1 |a Mathew, Febina M  |e verfasserin  |4 aut 
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773 1 8 |g volume:105  |g year:2021  |g number:6  |g day:24  |g month:06  |g pages:1621-1629 
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