Abstract
Meloidogyne camelliae n.sp. on camellia (Camellia japonica) from Japan and M. querciana n.sp. on pin oak (Quercus palustris) from Virginia, USA, are described and illustrated. M. camelliae n.sp. is distingnishable from other species of the genus especially by its striking perineal pattern having heavy ropelike striae forming a squarish to rectangular outline with shoulders or projections, appearing sometimes ahnost starlike. M. querciana differs from other species by its characteristic perineal pattern round to oval in outline, sometimes with a low arch, and sunken vulva surrounded by a prominent obovate area devoid of striae. M. querciana shows some relationship to M. ovalis, but differs further fxom the latter by longer larvae, absence of annules on head of larvae, and rarity of males. Examination of specimens of M. camelliae n.sp. and M. querciana n.sp. with the scanning electron microscope confirmed observations made by optical microscopy and revealed diagnostic and other structures in greater detail. In greenhouse host tests, M. camelliae infected camellia heavily, showed moderate infection on oxalis, only a trace infection on tomato, and no infection on five other plants tested; and M. querciana attacked pin oak, red oak, and American chestnut heavily, but did not infect nine other test plants. In another test, pin oak seedlings did not become infected when heavily inoculated with and grown in the presence of two populations of M. incognita incognita and one of M. incognita acrita. The common names "camellia root-knot nematode" and "oak root-knot nematode" are respectively proposed for M. camelliae and M. querciana.
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Claims 10
Claim · model-written summary
M. camelliae heavily infected camellia.
- Interactor
- M. camelliaeMeloidogyne camelliaee0pathogen
- Outcome
- infected camelliae0
- Qualifier
- heavilye0
CamelliaNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. camelliae infected camellia heavily”
Claim · model-written summary
M. camelliae caused moderate infection on oxalis.
- Interactor
- M. camelliaeMeloidogyne camelliaee1pathogen
- Outcome
- moderate infection on oxalise0
OxalisNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“showed moderate infection on oxalis”
e1“M. camelliae infected camellia heavily”
Claim · model-written summary
M. camelliae caused trace infection on tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Interactor
- M. camelliaeMeloidogyne camelliaee1pathogen
- Outcome
- trace infection on tomatoe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only a trace infection on tomato”
e1“M. camelliae infected camellia heavily”
Claim · model-written summary
M. camelliae did not infect five other test plants.
- Taxon
- plantsViridiplantaee0
- Interactor
- M. camelliaeMeloidogyne camelliaee1pathogen
- Outcome
- no infectione0
- Value
- fivee0
Not reportedDirection
Verbatim
e0“no infection on five other plants tested”
e1“M. camelliae infected camellia heavily”
Claim · model-written summary
M. querciana heavily attacked pin oak.
- Taxon
- pin oak
Quercus palustrise0 - Interactor
- M. quercianae0pathogen
- Outcome
- attacked pin oake0
- Qualifier
- heavilye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. querciana attacked pin oak, red oak, and American chestnut heavily”
Claim · model-written summary
M. querciana heavily attacked red oak.
- Taxon
- red oak
_(14092717698).jpg?width=60)
Quercus rubrae0 - Interactor
- M. quercianae0pathogen
- Outcome
- attacked pin oak, red oak, and American chestnute0
- Qualifier
- heavilye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(14092717698).jpg?width=500)
Verbatim
e0“M. querciana attacked pin oak, red oak, and American chestnut heavily”
Claim · model-written summary
M. querciana heavily attacked American chestnut.
- Taxon
- American chestnut
Castanea dentatae0 - Interactor
- M. quercianae0pathogen
- Outcome
- attacked pin oak, red oak, and American chestnute0
- Qualifier
- heavilye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. querciana attacked pin oak, red oak, and American chestnut heavily”
Claim · model-written summary
M. querciana did not infect nine other test plants.
- Taxon
- plantsViridiplantaee0
- Interactor
- M. quercianae1pathogen
- Outcome
- did not infecte0
- Value
- ninee0
Not reportedDirection
Verbatim
e0“but did not infect nine other test plants”
e1“M. querciana attacked pin oak”
Claim · model-written summary
Pin oak seedlings were uninfected after inoculation with two M. incognita incognita populations.
- Taxon
- pin oakQuercus palustrise0
- Organ / stage
- seedlingse0
- Treatment
- heavily inoculated withe0
- Interactor
- M. incognita incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae0pathogen - Outcome
- did not become infectede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“pin oak seedlings did not become infected when heavily inoculated with and grown in the presence of two populations of M. incognita incognita and one of M. incognita acrita.”
Claim · model-written summary
Pin oak seedlings were uninfected after inoculation with M. incognita acrita.
- Taxon
- pin oakQuercus palustrise0
- Organ / stage
- seedlingse0
- Treatment
- heavily inoculated withe0
- Interactor
- M. incognita acritaMeloidogyne incognitae0pathogen
- Outcome
- did not become infectede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pin oak seedlings did not become infected when heavily inoculated with and grown in the presence of two populations of M. incognita incognita and one of M. incognita acrita.”