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轮叶车前瓢虫(鞘翅目:瓢虫科)对大豆根腐病的扩散作用。

Dispersion of the soybean root rot by Cycloneda sanguinea (Coleoptera: Coccinellidae).

机构信息

Departamento de Defesa Fitossanitária, Universidade Federal de Santa Maria, Santa Maria, 97105-900, Brazil.

Departamento de Estatística, Universidade Federal de Santa Maria, Santa Maria, 97105-900, Brazil.

出版信息

Sci Rep. 2018 Feb 5;8(1):2409. doi: 10.1038/s41598-018-20587-8.

DOI:10.1038/s41598-018-20587-8
PMID:29402912
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5799320/
Abstract

The dispersion of pathogenic microorganisms consists of the transport of pathogens from their source to inoculate a new host. Agricultural and economic importance of the Soybean root rot justifies studying this disease, especially the role of insects as dispersers. The aim of this study was to evaluate the role of the ladybird beetle, Cycloneda sanguinea Linnaeus (Coleoptera: Coccinellidae) in the dispersion of pathogens that cause Soybean root rot. Three pathogen species, Macrophomina phaseolina (Tassi) (Sphaeropsidales: Botryosphaeriaceae), Fusarium incarnatum-equiseti species complex (FIESC), and F. commune (Skovgaard) O'Donnell & Nirenberg were isolated from the midgut of ladybird beetles and cultured. Macrophomina phaseolina was identified by morphology while for the other two species, DNA was sequenced. The DNA extracted was amplified in the Internal Transcriber Spacer (ITS) region, sequenced and compared to voucher sequences deposited in the GenBank. Sequences of nucleotide ITS1-5.8 S were identified in the regions of rDNA-ITS4 ribosomal DNA. This is the first report of Macrophomina phaseolina (Tassi) (Sphaeropsidales: Botryosphaeriaceae), Fusarium incarnatum-equiseti species complex (FIESC), and F. commune (Skovgaard) O'Donnell & Nirenberg, being dispersed by C. sanguinea in Brazilian soybean fields.

摘要

病原微生物的传播包括病原体从其源头传播到新宿主的过程。大豆根腐病具有农业和经济重要性,因此值得研究,尤其是昆虫作为传播者的作用。本研究旨在评估瓢虫(鞘翅目:瓢虫科)在传播引起大豆根腐病的病原体中的作用。从瓢虫的中肠分离并培养了三种病原菌,即大茎点霉(Macrophomina phaseolina)(球壳目:壳球孢科)、串珠镰刀菌复合种(Fusarium incarnatum-equiseti species complex)(FIESC)和 F. commune(斯科沃加德)O'Donnell & Nirenberg。大茎点霉通过形态学进行鉴定,而对于其他两种病原菌,进行了 DNA 测序。从 rDNA-ITS4 核糖体 DNA 区域中扩增提取的 DNA 的 ITS1-5.8S 区,并进行测序,然后与保存在 GenBank 中的凭证序列进行比较。这是首次报道大茎点霉(Tassi)(球壳目:壳球孢科)、串珠镰刀菌复合种(FIESC)和 F. commune(斯科沃加德)O'Donnell & Nirenberg 通过 C. sanguinea 在巴西大豆田中传播。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e19/5799320/4074ef119202/41598_2018_20587_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e19/5799320/21826e90e5ea/41598_2018_20587_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e19/5799320/c4084d1a5340/41598_2018_20587_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e19/5799320/4074ef119202/41598_2018_20587_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e19/5799320/21826e90e5ea/41598_2018_20587_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e19/5799320/c4084d1a5340/41598_2018_20587_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e19/5799320/4074ef119202/41598_2018_20587_Fig3_HTML.jpg

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