Abstract
Abstract Background and goals The northern root-knot nematode (Meloidogyne hapla) is a prevalent plant-parasitic nematode in northern grapegrowing regions. This nematode induces small galls on roots that restrict water and nutrient uptake, resulting in poor vine establishment or exacerbated decline in stressed vines. Rootstocks can be a viable option to manage vine decline caused by M. hapla in vineyards. Methods and key findings Nine Vitis spp. rootstocks (1616C, 99R, 44-53M, 140RU, Minotaur, SO4, SW, 5BB, and 1103P) and two Vitis vinifera own-rooted vines (Chardonnay and Cabernet Sauvignon) were evaluated against M. hapla in the greenhouse. Potted vines were inoculated with 5000 M. hapla eggs and destructively harvested after three months. Nematode reproduction factors (final population density/initial population density) were lower on the non-vinifera rootstocks than on the own-rooted V. vinifera vines. Only the rootstock 44-53M had a significantly greater reproduction factor value than the other non-vinifera rootstocks. Conclusions and significance This greenhouse evaluation provides a baseline resistance rating against M. hapla for several rootstock varieties. While many rootstocks are not fully resistant to M. hapla, the ability of M. hapla to reproduce on their roots relative to V. vinifera roots is several times lower. Rootstocks could improve longer-term management of M. hapla in Washington State vineyards.
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Claims 4
Claim · model-written summary
Meloidogyne hapla reproduction factors were lower on non-vinifera rootstocks than on own-rooted V. vinifera vines.
- Taxon
- V. vinifera
Vitis viniferae0 - Material
- non-vinifera rootstockse0
- Interactor
- M. hapla
Meloidogyne haplae1pathogen - Outcome
- Nematode reproduction factorse0
- Direction
- lowere0
- Comparator
- own-rooted V. vinifera vinese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nematode reproduction factors (final population density/initial population density) were lower on the non-vinifera rootstocks than on the own-rooted V. vinifera vines.”
t0“Meloidogyne hapla”
e1“many rootstocks are not fully resistant to M. hapla”
Claim · model-written summary
Rootstock 44-53M had a significantly greater nematode reproduction factor than other non-vinifera rootstocks.
- Material
- 44-53Me0
- Interactor
- Meloidogyne haplaMeloidogyne haplat0pathogen
- Outcome
- reproduction factor valuee0
- Direction
- greatere0
- Comparator
- other non-vinifera rootstockse0
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only the rootstock 44-53M had a significantly greater reproduction factor value than the other non-vinifera rootstocks.”
t0“Meloidogyne hapla”
t1“Vitis spp.”
Claim · model-written summary
Many rootstocks were not fully resistant to M. hapla.
- Interactor
- M. haplaMeloidogyne haplae0pathogen
- Outcome
- not fully resistant to M. haplae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“many rootstocks are not fully resistant to M. hapla”
t0“Vitis spp.”
Claim · model-written summary
The authors propose rootstocks for longer-term management of M. hapla in Washington State vineyards.
- Interactor
- M. haplaMeloidogyne haplae0pathogen
- Outcome
- longer-term management of M. haplae0
- Setting
- Washington State vineyardse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rootstocks could improve longer-term management of M. hapla in Washington State vineyards.”
t0“Vitis spp.”