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

<p>The peach root-knot nematode, <italic>Meloidogyne floridensis</italic>, is an emerging species and may become a threat to peach growers if contamination and spread are not avoided. The influence of temperature and two plants – tomato (<italic>Solanum lycopersicum</italic>) and French marigold (<italic>Tagete patula</italic>) – on the vertical migration of second-stage juveniles (J2) of <italic>M. floridensis</italic> was studied using 14-cm long segmented soil columns. Plants were transplanted into cups attached to the top of each column. Nylon meshes were placed between cups and columns to prevent downward root growth. About 1,000 freshly hatched J2 were injected into the base of the columns and then the columns were transferred to growth chambers at 20 and 26°C under a completely randomized block design with four replicates. The number of J2 in each ring of the columns as well as inside tomato or marigold roots was recorded at 3, 6, 9, and 12 days after injection (DAI). Nematode data were subjected to a repeated measures MANOVA. The presence of plants did not improve J2 migration as compared to control. <italic>M. floridensis</italic> migration was best at 20°C at first, with J2 migrating more than 13 cm as soon as 3 DAI, while it took 9 DAI for J2 to migrate long distances at 26°C. The distribution of J2 along the columns was similar at both temperatures at 12 DAI. Temperature had no influence on J2 penetration. French marigold did not hinder J2 migration, but fewer J2 penetrated its roots.</p>
</abstract>

The peach root-knot nematode, Meloidogyne floridensis, is an emerging species and may become a threat to peach growers if contamination and spread are not avoided. The influence of temperature and two plants – tomato (Solanum lycopersicum) and French marigold (Tagete patula) – on the vertical migration of second-stage juveniles (J2) of M. floridensis was studied using 14-cm long segmented soil columns. Plants were transplanted into cups attached to the top of each column. Nylon meshes were placed between cups and columns to prevent downward root growth. About 1,000 freshly hatched J2 were injected into the base of the columns and then the columns were transferred to growth chambers at 20 and 26°C under a completely randomized block design with four replicates. The number of J2 in each ring of the columns as well as inside tomato or marigold roots was recorded at 3, 6, 9, and 12 days after injection (DAI). Nematode data were subjected to a repeated measures MANOVA. The presence of plants did not improve J2 migration as compared to control. M. floridensis migration was best at 20°C at first, with J2 migrating more than 13 cm as soon as 3 DAI, while it took 9 DAI for J2 to migrate long distances at 26°C. The distribution of J2 along the columns was similar at both temperatures at 12 DAI. Temperature had no influence on J2 penetration. French marigold did not hinder J2 migration, but fewer J2 penetrated its roots.

<article-title xml:lang="en">Temperature: a driving factor for <italic>Meloidogyne floridensis</italic> migration toward different hosts

Journal of Nematology

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

Temperature: a driving factor for  migration toward different hosts

The peach root-knot nematode, Meloidogyne floridensis, is an emerging species and may become a threat to peach growers if contamination and spread are not...

Temperature: a driving factor for Meloidogyne floridensis migration toward different hosts

Publié en ligne: 12 août 2021

Pages: 1 - 10

DOI: https://doi.org/10.21307/jofnem-2021-074

Mots clés
Behavior, Mobility, Peach root-knot nematode, Soil column

© 2021 Diego A. H. S. Leitão et al., published by Sciendo.

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

Temperature: a driving factor for Meloidogyne floridensis migration toward different hosts

Publié en ligne: 12 août 2021

Pages: 1 - 10

DOI: https://doi.org/10.21307/jofnem-2021-074

Mots clésBehavior, Mobility, Peach root-knot nematode, Soil column

© 2021 Diego A. H. S. Leitão et al., published by Sciendo.

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

Mots clés
Behavior, Mobility, Peach root-knot nematode, Soil column