A combined cryo-scanning electron microscopy/cryoplaning approach to study the infection of Meloidogyne incognita eggs by Pochonia chlamydosporia

A combined cryo-scanning electron microscopy/cryoplaning approach to study the infection of Meloidogyne incognita eggs by Pochonia chlamydosporia
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冷冻扫描电子显微镜/冷冻平面联合方法研究厚垣孢子菌对南方根结线虫卵的感染

DOI:
10.1163/15685411-00002830
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发表时间:
2014
期刊:
影响因子:
1.2
通讯作者:
Manzanilla-López R
Manzanilla-López R
中科院分区:
生物学3区
文献类型:
--
作者:
Manzanilla-López R

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厚垣孢子菌(Pochonia chlamydospori)是一种土壤寄生真菌,也是植物根结线虫(Meloidogynespp.)对其分子特征、多样性、三营养相互作用和生态学进行了研究。然而,为了阐明这种和其他用于生物防治的食虫真菌在土壤和根际生态中的作用,并加强对它们的利用,有必要使用不同的方法,包括显微镜,提高对生物学和真菌线虫感染过程的理解。低温扫描电子显微镜(cryo-SEM)技术允许检查冷冻的、完全水合的样品,这些样品可以揭示通过真菌-线虫相互作用发生的重要超微结构特征。本文建立了一种冷冻扫描电镜和冷冻刨平相结合的方法,对南方根结线虫(Meloidogyne incognitacolonized)的卵、凝胶基质和雌虫进行了检查。厚垣孢子。在马铃薯葡萄糖琼脂中产生真菌样品,向马铃薯葡萄糖琼脂中加入不同的线虫阶段,并在接种后0-72小时的时间内处理用于冷冻SEM和冷冻刨平。该方法被认为是快速和经济的,提供了清晰和详细的外部图像的感染过程,并允许查看部分通过结构与最小的处理相比,其他冷冻扫描电镜技术,它可以适应于研究其他真菌线虫的相互作用。
The fungusPochonia chlamydosporiais a saprophytic soil-dwelling fungus and is also a parasite of the eggs of the root-knot plant-parasitic nematodes (Meloidogynespp.). Studies on its molecular characterisation, diversity, tritrophic interactions and ecology have been carried out. However, to elucidate the role in soil and rhizosphere ecology of this and other nematophagous fungi used in biological control, and to enhance their exploitation, it is necessary to improve the understanding of the biology and fungus-nematode infection process using different approaches, including microscopy. Low-temperature Scanning Electron Microscopy (cryo-SEM) techniques allow the examination of frozen, fully hydrated samples that can reveal important ultrastructural features occurring through fungus-nematode interactions. A method that combined cryo-SEM with cryoplaning was developed to examine samples of eggs, gelatinous matrix and females ofMeloidogyne incognitacolonised byP. chlamydosporia. The fungal samples were produced in potato dextrose agar to which different nematode stages were added and processed for cryo-SEM and cryoplaning within a period of 0-72 h post inoculation. The method was found to be rapid and economical, provided clear and detailed external images of the infection process and allowed viewing of sections through structures with minimal processing in comparison to other cryo-SEM techniques and it could be adapted to study other fungus-nematode interactions.
穿透性巴斯德氏菌 (Pasteuria penetrans) 的 16S rRNA 基因可提供根结线虫 (Meloidogyne spp.) 感染的早期诊断
DOI: 10.1163/156854112x627318
发表时间: 2012
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模式豆科植物百脉根的生态型在与根结线虫根结线虫的相互作用表型方面有所不同。
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DOI: 10.1139/m91-033
发表时间: 1991
影响因子: 2.8
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DOI: 10.1163/187529293x00042
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期刊: Nematologica
影响因子: --
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