Abstract
Summary Seven different Phytophthora species were used to test the foliar susceptibility of the common eastern US oak species and understory plants to Phytophthora infection. The Phytophthora species employed were Phytophthora cambivora , Phytophthora cinnamomi , Phytophthora citricola , Phytophthora europaea , Phytophthora quercetorum , Phytophthora quercina ‐like and Phytophthora sp1. Inoculation of detached‐leaves with agar plugs containing mycelia of Phytophthora provided an estimate of their relative susceptibility. Lesions were always greater when foliage was wounded and young. On deciduous plants, lesion sizes were considerably reduced with the increasing foliar age, although with evergreen plants lesion sizes remained similar regardless of foliar age when more aggressive isolates were tested. Infections seldom resulted when foliage was not wounded. With young and mature foliage, P. citricola usually produced the largest lesions. Young foliage of Quercus rubra was the most susceptible to infection followed by Castanea dentata for both wounded and non‐wounded inoculations. Mature foliage of Hamamelis virginiana , Kalmia latifolia and Quercus alba were the most susceptible to wound and non‐wound inoculations.
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Claims 8
Claim · model-written summary
Wounded and young foliage developed larger lesions.
QuercusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lesions were always greater when foliage was wounded and young.”
t0“oak species”
Claim · model-written summary
Deciduous foliage lesion size decreased with increasing leaf age.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On deciduous plants, lesion sizes were considerably reduced with the increasing foliar age”
t0“oak species”
Claim · model-written summary
Evergreen foliage lesions remained similar across leaf ages with aggressive isolates.
- Organ / stage
- foliar agee0
- Outcome
- lesion sizese0
- Direction
- remained similare0
- Qualifier
- when more aggressive isolates were testede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with evergreen plants lesion sizes remained similar regardless of foliar age when more aggressive isolates were tested”
t0“oak species”
Claim · model-written summary
Unwounded foliage seldom became infected.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infections seldom resulted when foliage was not wounded.”
t0“oak species”
Claim · model-written summary
P. citricola usually caused the largest lesions on young and mature foliage.
- Organ / stage
- young and mature foliagee0
- Interactor
- P. citricolaPhytophthora citricolae0pathogen
- Outcome
- lesionse0
- Direction
- largeste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With young and mature foliage, P. citricola usually produced the largest lesions.”
t0“oak species”
Claim · model-written summary
Young Quercus rubra foliage was most susceptible to infection under wounded and unwounded inoculation.
- Taxon
- Quercus rubra
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Quercus rubrae0 - Organ / stage
- Young foliagee0
- Outcome
- susceptible to infectione0
- Direction
- moste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(14092717698).jpg?width=500)
Verbatim
e0“Young foliage of Quercus rubra was the most susceptible to infection followed by Castanea dentata for both wounded and non‐wounded inoculations.”
Claim · model-written summary
Young Castanea dentata foliage ranked after Quercus rubra in infection susceptibility.
- Taxon
- Castanea dentata
Castanea dentatae0 - Organ / stage
- Young foliagee0
- Outcome
- susceptible to infectione0
- Direction
- followed bye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Young foliage of Quercus rubra was the most susceptible to infection followed by Castanea dentata for both wounded and non‐wounded inoculations.”
Claim · model-written summary
Mature Hamamelis virginiana, Kalmia latifolia and Quercus alba foliage were most susceptible under both inoculations.
- Taxon
- Hamamelis virginiana , Kalmia latifolia and Quercus alba
Quercus alba
Hamamelis virginiana
Kalmia latifoliae0 - Organ / stage
- Mature foliagee0
- Outcome
- susceptible to wound and non‐wound inoculationse0
- Direction
- moste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature foliage of Hamamelis virginiana , Kalmia latifolia and Quercus alba were the most susceptible to wound and non‐wound inoculations.”