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

<p>
<italic>Festulolium</italic> hybrids are forage grasses used worldwide in temperate climates. They are associated with the fungal endophyte <italic>Epichloë uncinata</italic>, which aids in nutrient uptake, drought tolerance, and production of metabolites that protect against parasites and herbivores. <italic>Epichloë uncinata</italic> produces loline alkaloids, which can deter insect pests. <italic>Festulolium</italic> has not been widely studied for susceptibility to plant-parasitic nematodes, so <italic>Festulolium</italic> lines, with and without fungal endophytes, were tested in the greenhouse for host status to the root-knot nematode <italic>Meloidogyne incognita</italic>. All were poor hosts, regardless of line or endophyte status. Pepper seedlings planted into soil following removal of the <italic>Festulolium</italic> plants were infected by nematodes, likely because of surviving nematodes from the original inoculation combined with some reproduction on <italic>Festulolium</italic>. Lolines were found in shoots and roots of all endophyte-associated lines, and some types of lolines in roots increased after nematode infection. Methanolic extracts from roots and shoots of a tested <italic>Festulolium</italic> line did not inhibit egg hatch, but killed nearly a third of second-stage juveniles whether an endophyte was present or not. Further studies would indicate whether these <italic>Festulolium</italic> lines aid in suppressing field populations of <italic>M. incognita</italic>.</p>
</abstract>

Festulolium hybrids are forage grasses used worldwide in temperate climates. They are associated with the fungal endophyte Epichloë uncinata, which aids in nutrient uptake, drought tolerance, and production of metabolites that protect against parasites and herbivores. Epichloë uncinata produces loline alkaloids, which can deter insect pests. Festulolium has not been widely studied for susceptibility to plant-parasitic nematodes, so Festulolium lines, with and without fungal endophytes, were tested in the greenhouse for host status to the root-knot nematode Meloidogyne incognita. All were poor hosts, regardless of line or endophyte status. Pepper seedlings planted into soil following removal of the Festulolium plants were infected by nematodes, likely because of surviving nematodes from the original inoculation combined with some reproduction on Festulolium. Lolines were found in shoots and roots of all endophyte-associated lines, and some types of lolines in roots increased after nematode infection. Methanolic extracts from roots and shoots of a tested Festulolium line did not inhibit egg hatch, but killed nearly a third of second-stage juveniles whether an endophyte was present or not. Further studies would indicate whether these Festulolium lines aid in suppressing field populations of M. incognita.


<italic>Festulolium</italic> and fungal endophyte associations: host status for <italic>Meloidogyne incognita</italic> and nematotoxic plant extracts

Journal of Nematology

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


 and fungal endophyte associations: host status for  and nematotoxic plant extracts

running-head

Festulolium hybrids are forage grasses used worldwide in temperate climates. They are associated with the fungal endophyte Epichloë uncinata, which aids in...

Festulolium and fungal endophyte associations: host status for Meloidogyne incognita and nematotoxic plant extracts

Pubblicato online: 28 lug 2020

Pagine: 1 - 16

DOI: https://doi.org/10.21307/jofnem-2020-076

Parole chiave
Fungal endophyte, Interaction, Nematode host status, Plant extract, Root-knot nematode

© 2020 Susan L. F. Meyer et al., published by Sciendo

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

Festulolium and fungal endophyte associations: host status for Meloidogyne incognita and nematotoxic plant extracts

Pubblicato online: 28 lug 2020

Pagine: 1 - 16

DOI: https://doi.org/10.21307/jofnem-2020-076

Parole chiaveFungal endophyte, Interaction, Nematode host status, Plant extract, Root-knot nematode

© 2020 Susan L. F. Meyer et al., published by Sciendo

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

Parole chiave
Fungal endophyte, Interaction, Nematode host status, Plant extract, Root-knot nematode