<abstract xmlns="http://www.w3.org/1999/xhtml">

<p><italic>Aphelenchoides pseudogoodeyi</italic> has recently been reported in association with seeds of forage grasses and rice in Brazil and senescent strawberry plants, in the United States. This nematode is likely a mycophagous species; however, so far, its pathogenicity potential to plants is unclear. This study aimed to verify the pathogenicity of <italic>A. pseudogoodeyi</italic> to two species of ornamental plants. The experiments were conducted by inoculating <italic>A. pseudogoodeyi</italic> onto Bird’s-Nest Fern (<italic>Asplenium nidus</italic>) and Oriental Lily (<italic>Lilium speciosum</italic>) leaves, using two inoculation methods (with and without injury). After 40 days of inoculation (DAI) in Bird’s-Nest Fern and 5, 10, 20 and 40 DAI in Oriental Lily, the pathogenicity and the host efficiency were evaluated by symptoms observation and by severity, final nematode population and reproductive factor (RF), respectively. Additionally, a histopathological study was performed by inoculating <italic>A. pseudogoodeyi</italic> onto Bird’s-Nest Fern for observing anatomical alterations. <italic>A. pseudogoodeyi</italic> was able to cause local necrotic lesions on both Bird’s-Nest Fern and Oriental Lily leaves. However, the presence of injury was essential to enable <italic>A. pseudogoodeyi</italic> to penetrate and cause those symptoms in both plant species. Also, the total population of <italic>A. pseudogoodeyi</italic> decreased drastically over time and RF was &lt;1, which characterized these species as poor-host or resistant plants. <italic>A. pseudogoodeyi</italic> penetrated into the foliar tissue and induced a total destruction of the mesophyll and collapse of the cells, with the formation of large intercellular spaces. It is concluded that <italic>A. pseudogoodeyi</italic> is an opportunistic pathogen as injury was required to induce symptoms in Bird’s-Nest Fern and Oriental Lily.</p></abstract>

Aphelenchoides pseudogoodeyi has recently been reported in association with seeds of forage grasses and rice in Brazil and senescent strawberry plants, in the United States. This nematode is likely a mycophagous species; however, so far, its pathogenicity potential to plants is unclear. This study aimed to verify the pathogenicity of A. pseudogoodeyi to two species of ornamental plants. The experiments were conducted by inoculating A. pseudogoodeyi onto Bird’s-Nest Fern (Asplenium nidus) and Oriental Lily (Lilium speciosum) leaves, using two inoculation methods (with and without injury). After 40 days of inoculation (DAI) in Bird’s-Nest Fern and 5, 10, 20 and 40 DAI in Oriental Lily, the pathogenicity and the host efficiency were evaluated by symptoms observation and by severity, final nematode population and reproductive factor (RF), respectively. Additionally, a histopathological study was performed by inoculating A. pseudogoodeyi onto Bird’s-Nest Fern for observing anatomical alterations. A. pseudogoodeyi was able to cause local necrotic lesions on both Bird’s-Nest Fern and Oriental Lily leaves. However, the presence of injury was essential to enable A. pseudogoodeyi to penetrate and cause those symptoms in both plant species. Also, the total population of A. pseudogoodeyi decreased drastically over time and RF was <1, which characterized these species as poor-host or resistant plants. A. pseudogoodeyi penetrated into the foliar tissue and induced a total destruction of the mesophyll and collapse of the cells, with the formation of large intercellular spaces. It is concluded that A. pseudogoodeyi is an opportunistic pathogen as injury was required to induce symptoms in Bird’s-Nest Fern and Oriental Lily.

Pathogenicity of <italic>Aphelenchoides pseudogoodeyi</italic> on the ornamental plants <italic>Asplenium nidus</italic> and <italic>Lilium speciosum</italic> in Brazil

Helminthologia

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Pathogenicity of  on the ornamental plants  and  in Brazil

Aphelenchoides pseudogoodeyi has recently been reported in association with seeds of forage grasses and rice in Brazil and senescent strawberry plants, in the...

Pathogenicity of Aphelenchoides pseudogoodeyi on the ornamental plants Asplenium nidus and Lilium speciosum in Brazil

Article Category: Research Article

Published Online: Feb 10, 2021

Page range: 74 - 84

Received: Apr 06, 2020

Accepted: Oct 09, 2020

DOI: https://doi.org/10.2478/helm-2021-0003

Keywords
Aphelenchoididae, Bird’s-Nest Fern, Foliar nematode,

© 2021 E. C. Santos, I. L. Da Silva, R. O. Rosa, C. M. G. Oliveira, D. S. Buonicontro, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Pathogenicity of Aphelenchoides pseudogoodeyi on the ornamental plants Asplenium nidus and Lilium speciosum in Brazil

Article Category: Research Article

Published Online: Feb 10, 2021

Page range: 74 - 84

Received: Apr 06, 2020

Accepted: Oct 09, 2020

DOI: https://doi.org/10.2478/helm-2021-0003

KeywordsAphelenchoididae, Bird’s-Nest Fern, Foliar nematode,

© 2021 E. C. Santos, I. L. Da Silva, R. O. Rosa, C. M. G. Oliveira, D. S. Buonicontro, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Aphelenchoididae, Bird’s-Nest Fern, Foliar nematode,