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Colonization of plant roots by egg-parasitic and nematode-trapping fungi

Bordallo, JJ; Lopez-Llorca, LV; Jansson, Hans-Börje LU ; Salinas, J; Persmark, Lotta LU and Asensio, L (2002) In New Phytologist 154(2). p.491-499
Abstract
• The ability of the nematode-trapping fungus Arthrobotrys oligospora and the nematode egg parasite Verticillium chlamydosporium to colonize barley (Hordeum vulgare) and tomato (Lycopersicum esculentum) roots was examined, together with capability of the fungi to induce cell wall modifications in root cells.



• Chemotropism was studied using an agar plate technique. Root colonization was investigated with light microscopy and scanning electron microscopy, while compounds involved in fungus–plant interactions were studied histochemically.



• Only A. oligospora responded chemotropically to roots. Colonization of barley and tomato by both fungi involved appressoria to facilitate epidermis penetration. V.... (More)
• The ability of the nematode-trapping fungus Arthrobotrys oligospora and the nematode egg parasite Verticillium chlamydosporium to colonize barley (Hordeum vulgare) and tomato (Lycopersicum esculentum) roots was examined, together with capability of the fungi to induce cell wall modifications in root cells.



• Chemotropism was studied using an agar plate technique. Root colonization was investigated with light microscopy and scanning electron microscopy, while compounds involved in fungus–plant interactions were studied histochemically.



• Only A. oligospora responded chemotropically to roots. Colonization of barley and tomato by both fungi involved appressoria to facilitate epidermis penetration. V. chlamydosporium colonized tomato root epidermis and produced chlamydospores. Papillae, appositions and lignitubers ensheathing hyphae on tomato were also found. Phenolics (including lignin), protein deposits and callose were present in papillae in both hosts. Both fungi were still present in epidermal cells 3 months after inoculation.



• Nematophagous fungi colonized endophytically monocotyledon and dicotyledon plant roots. Arthrobotrys oligospora seemed to be more aggressive than V. chlamydosporium on barley roots. Both fungi induced cell wall modifications, but these did not prevent growth. The response of root cells to colonization by nematophagous fungi may have profound implications in the performance of these organisms as biocontrol agents of plant parasitic nematodes. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
New Phytologist
volume
154
issue
2
pages
491 - 499
publisher
Wiley-Blackwell
external identifiers
  • wos:000175244900019
  • scopus:0036234121
ISSN
1469-8137
DOI
10.1046/j.1469-8137.2002.00399.x
language
English
LU publication?
yes
id
7c5be60c-57ac-4965-9122-96d9a53421a2 (old id 149428)
date added to LUP
2007-06-29 09:06:19
date last changed
2017-10-01 03:51:51
@article{7c5be60c-57ac-4965-9122-96d9a53421a2,
  abstract     = {• The ability of the nematode-trapping fungus Arthrobotrys oligospora and the nematode egg parasite Verticillium chlamydosporium to colonize barley (Hordeum vulgare) and tomato (Lycopersicum esculentum) roots was examined, together with capability of the fungi to induce cell wall modifications in root cells.<br/><br>
 <br/><br>
• Chemotropism was studied using an agar plate technique. Root colonization was investigated with light microscopy and scanning electron microscopy, while compounds involved in fungus–plant interactions were studied histochemically.<br/><br>
 <br/><br>
• Only A. oligospora responded chemotropically to roots. Colonization of barley and tomato by both fungi involved appressoria to facilitate epidermis penetration. V. chlamydosporium colonized tomato root epidermis and produced chlamydospores. Papillae, appositions and lignitubers ensheathing hyphae on tomato were also found. Phenolics (including lignin), protein deposits and callose were present in papillae in both hosts. Both fungi were still present in epidermal cells 3 months after inoculation.<br/><br>
 <br/><br>
• Nematophagous fungi colonized endophytically monocotyledon and dicotyledon plant roots. Arthrobotrys oligospora seemed to be more aggressive than V. chlamydosporium on barley roots. Both fungi induced cell wall modifications, but these did not prevent growth. The response of root cells to colonization by nematophagous fungi may have profound implications in the performance of these organisms as biocontrol agents of plant parasitic nematodes.},
  author       = {Bordallo, JJ and Lopez-Llorca, LV and Jansson, Hans-Börje and Salinas, J and Persmark, Lotta and Asensio, L},
  issn         = {1469-8137},
  language     = {eng},
  number       = {2},
  pages        = {491--499},
  publisher    = {Wiley-Blackwell},
  series       = {New Phytologist},
  title        = {Colonization of plant roots by egg-parasitic and nematode-trapping fungi},
  url          = {http://dx.doi.org/10.1046/j.1469-8137.2002.00399.x},
  volume       = {154},
  year         = {2002},
}