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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-06-21-1151-RE
|2 doi
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|a pubmed24n1100.xml
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
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|a Xu, Xi
|e verfasserin
|4 aut
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| 245 |
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|a Alternaria spp. Associated with Leaf Blight of Maize in Heilongjiang Province, China
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 02.03.2022
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|a Date Revised 02.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Maize (Zea mays L.) is a major economic crop worldwide. Maize can be infected by Alternaria species causing leaf blight that can result in significant economic losses. In this study, 168 Alternaria isolates recovered from symptomatic maize leaves were identified based on morphological characteristics, pathogenicity, and multilocus sequence analyses of the genes glyceraldehyde-3-phosphate dehydrogenase (GAPDH), the internal transcribed spacer of ribosomal DNA (rDNA ITS), the RNA polymerase II second largest subunit (RPB2), and histone3 (HIS3). Maize isolates grouped to four Alternaria species including Alternaria tenuissima, A. alternata, A. burnsii, and Alternaria sp. Notably, A. tenuissima (71.4%) was the most prevalent of the four isolated species, followed by A. alternata (21.5%), Alternaria sp. (4.1%), and A. burnsii (3.0%). Pathogenicity tests showed that all four Alternaria species could produce elliptic to nearly round, or strip, lesions on leaves of maize, gray-white to dry white in the lesion centers and reddish-brown at the edges. The average disease incidence (58.47%) and average disease index (63.55) of maize leaves inoculated with A. alternata were significantly higher than levels resulting from A. tenuissima (55.28% and 58.49), Alternaria sp. (55.34% and 58.75), and A. burnsii (56% and 55). Haplotype analyses indicated that there were 14 haplotypes of A. tenuissima and five haplotypes of A. alternata in Heilongjiang Province and suggested the occurrence of a population expansion. Results of the study showed that Alternaria species associated with maize leaf blight in Heilongjiang Province are more diverse than those that have been previously reported. This is the first report globally of A. tenuissima, A. burnsii, and an unclassified Alternaria species as causal agents of leaf blight on maize
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|a Journal Article
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|a Alternaria leaf blight
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|a Alternaria species
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|a haplotype
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4 |
|a maize
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| 650 |
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4 |
|a pathogenicity
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| 700 |
1 |
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|a Zhang, Li
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Xilang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cao, Hanshui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Jingjing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cao, Peng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Guo, Lifeng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Xiangjing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Junwei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xiang, Wensheng
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 106(2022), 2 vom: 02. Feb., Seite 572-584
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|g year:2022
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|g pages:572-584
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|u http://dx.doi.org/10.1094/PDIS-06-21-1151-RE
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