Abstract
Monthly inoculations of both intact plants and excised shoots of Quercus suber with the pathogenic species Botryosphaeria stevensii and Phytophthora cinnamomi were performed to investigate seasonal changes in susceptibility of this forest tree species in relation to environmental parameters and plant water status. Infection symptoms were mainly detected on seedlings inoculated from spring to autumn (April through October) with either pathogen. Mean canker sizes also showed a seasonal pattern, the higher values being recorded in the same period as above. Lesion lengths were significantly ( P < 0·001) related to environmental minimum temperature. Mean daily minimum temperatures within the range of 5–12°C clearly inhibited lesion development of P. cinnamomi , whereas B. stevensii showed a less pronounced decrease in canker expansion at the same temperature range. In excised shoots of Q. suber inoculated monthly with B. stevensii , a negative linear relationship was found between the studied range of plant relative water content (81–91%) and canker length. In contrast, the lesions caused by P. cinnamomi were not significantly ( P = 0·32) related to any seasonal change in water content. Some control measures for the diseases caused by both pathogens are discussed on the basis of the seasonal changes in host susceptibility observed in this study.
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Claims 7
Claim · model-written summary
Infection symptoms on Quercus suber seedlings were mainly detected after inoculation from spring to autumn
- Taxon
- Quercus suber
Quercus subert0 - Treatment
- inoculated from spring to autumn (April through October)e2
- Interactor
- Botryosphaeria stevensiiDiplodia mutilae1pathogen
- Second interactor
- Phytophthora cinnamomi
Phytophthora cinnamomie1pathogen - Outcome
- Infection symptomse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seasonal changes in susceptibility of Quercus suber to Botryosphaeria stevensii and Phytophthora cinnamomi”
e1“Monthly inoculations of both intact plants and excised shoots of Quercus suber with the pathogenic species Botryosphaeria stevensii and Phytophthora cinnamomi were performed”
e2“Infection symptoms were mainly detected on seedlings inoculated from spring to autumn (April through October) with either pathogen”
Claim · model-written summary
Canker sizes on Quercus suber showed a seasonal pattern with higher values in spring to autumn
- Taxon
- Quercus suberQuercus subert0
- Treatment
- seasonal patterne3
- Interactor
- Botryosphaeria stevensiiDiplodia mutilae1pathogen
- Second interactor
- Phytophthora cinnamomiPhytophthora cinnamomie1pathogen
- Outcome
- canker sizese3
- Direction
- highere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seasonal changes in susceptibility of Quercus suber to Botryosphaeria stevensii and Phytophthora cinnamomi”
e1“Monthly inoculations of both intact plants and excised shoots of Quercus suber with the pathogenic species Botryosphaeria stevensii and Phytophthora cinnamomi were performed”
e3“Mean canker sizes also showed a seasonal pattern, the higher values being recorded in the same period as above”
Claim · model-written summary
Lesion lengths on Quercus suber were significantly related to environmental minimum temperature
- Taxon
- Quercus suberQuercus subert0
- Treatment
- environmental minimum temperaturee4
- Outcome
- Lesion lengthse4
- Qualifier
- P < 0·001e4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seasonal changes in susceptibility of Quercus suber to Botryosphaeria stevensii and Phytophthora cinnamomi”
e4“Lesion lengths were significantly ( P < 0·001) related to environmental minimum temperature”
Claim · model-written summary
Mean daily minimum temperatures of 5-12 °C inhibited lesion development of Phytophthora cinnamomi on Quercus suber
- Taxon
- Quercus suberQuercus subert0
- Treatment
- Mean daily minimum temperatures within the range of 5–12°Ce5
- Interactor
- P. cinnamomiPhytophthora cinnamomie5pathogen
- Outcome
- lesion developmente5
- Direction
- inhibitede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seasonal changes in susceptibility of Quercus suber to Botryosphaeria stevensii and Phytophthora cinnamomi”
e5“Mean daily minimum temperatures within the range of 5–12°C clearly inhibited lesion development of P. cinnamomi , whereas B. stevensii showed a less pronounced decrease in canker expansion at the same temperature range”
Claim · model-written summary
Botryosphaeria stevensii canker expansion on Quercus suber decreased less pronouncedly than P. cinnamomi lesion development at the same temperatures
- Taxon
- Quercus suberQuercus subert0
- Treatment
- the same temperature rangee5
- Interactor
- B. stevensiiDiplodia mutilae5pathogen
- Outcome
- canker expansione5
- Direction
- decreasee5
- Qualifier
- less pronouncede5
- Comparator
- P. cinnamomie5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seasonal changes in susceptibility of Quercus suber to Botryosphaeria stevensii and Phytophthora cinnamomi”
e5“Mean daily minimum temperatures within the range of 5–12°C clearly inhibited lesion development of P. cinnamomi , whereas B. stevensii showed a less pronounced decrease in canker expansion at the same temperature range”
Claim · model-written summary
In excised shoots of Quercus suber, canker length decreased with plant relative water content for Botryosphaeria stevensii
- Taxon
- Q. suberQuercus subere6
- Treatment
- plant relative water contente6
- Interactor
- B. stevensiiDiplodia mutilae6pathogen
- Outcome
- canker lengthe6
- Direction
- decreaseinferrede6
- Qualifier
- 81–91%e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seasonal changes in susceptibility of Quercus suber to Botryosphaeria stevensii and Phytophthora cinnamomi”
e6“In excised shoots of Q. suber inoculated monthly with B. stevensii , a negative linear relationship was found between the studied range of plant relative water content (81–91%) and canker length”
Claim · model-written summary
Lesions of Phytophthora cinnamomi on Quercus suber were not significantly related to seasonal change in water content
- Taxon
- Quercus suberQuercus subert0
- Treatment
- seasonal change in water contente7
- Interactor
- P. cinnamomiPhytophthora cinnamomie7pathogen
- Outcome
- lesionse7
- Qualifier
- P = 0·32e7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seasonal changes in susceptibility of Quercus suber to Botryosphaeria stevensii and Phytophthora cinnamomi”
e7“In contrast, the lesions caused by P. cinnamomi were not significantly ( P = 0·32) related to any seasonal change in water content”