Paper · 2003 · PubMed

Pathogenicity of Phytophthora infestans on solanaceous and asteraceous plant species in Cameroon.

D A Fontem; M O Olanya

13
claims
20
verbatim quotes
2
citations
3
research areas
—
Not open access

Abstract

Experiments were conducted to detect potential hosts of Phytophthora infestans, causal agent of potato late blight. Isolates of P. infestans recovered from garden huckleberry (Solanum scabrum), potato (S. tuberosum) and tomato (Lycopersicon esculentum) were inoculated on detached leaves of 12 solanaceous and 14 asteraceous plant species collected in and around potato fields in the western highlands of Cameroon. The inoculated leaves were maintained in Petri dishes in the laboratory for 7 days at 20-22 degrees C. Isolates of P. infestans from huckleberry, potato and tomato infected the same host plants as well as the gboma eggplant (Solanum macrocarpon) and two asteraceous weeds, Ageratum conyzoides and Solanecio biafrae. Inocula recovered from infected S. macrocarpon caused late blight symptoms on huckleberry, potato and tomato both under laboratory and screen house conditions, while those from both asteraceous weeds reinfected potato in the laboratory and inoculum from S. biafrae reinfected huckleberry in the screen house. This is a first observation of late blight infection on S. macrocarpon, A. conyzoides and S. biafrae in Cameroon. Results indicate the importance of both asteraceous weeds and S. macrocarpon as potential alternative hosts for P. infestans in garden huckleberry, potato or tomato fields.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 13

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

P. infestans isolates from huckleberry, potato and tomato infected their source hosts.

Taxon
huckleberry, potato and tomatoe0
Interactor
P. infestansPhytophthora infestanse0pathogen
Outcome
infected the same host plantse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Phytophthora infestans
Phytophthora infestans · InteractorHoward F. Schwartz, Colorado State University, United States · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Isolates of P. infestans from huckleberry, potato and tomato infected the same host plants”

✓ located verbatim in the source · abstract, characters 518–608 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The isolates also infected gboma eggplant.

Taxon
gboma eggplant (Solanum macrocarpon)Solanum macrocarpone0
Interactor
P. infestansPhytophthora infestanse0pathogen
Outcome
infectede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum macrocarpon
Solanum macrocarpon · Taxon · picture from its Wikimedia Commons categoryVinayaraj · CC BY-SA 3.0 · Wikimedia Commons ↗
Phytophthora infestans
Phytophthora infestans · InteractorHoward F. Schwartz, Colorado State University, United States · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Isolates of P. infestans from huckleberry, potato and tomato infected the same host plants as well as the gboma eggplant (Solanum macrocarpon)”

✓ located verbatim in the source · abstract, characters 518–660 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The isolates also infected Ageratum conyzoides.

Taxon
Ageratum conyzoidesAgeratum conyzoidese0
Interactor
P. infestansPhytophthora infestanse1pathogen
Outcome
infectede1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ageratum conyzoides
Ageratum conyzoides · TaxonMinghong · CC BY-SA 3.0 · Wikimedia Commons ↗
Phytophthora infestans
Phytophthora infestans · InteractorHoward F. Schwartz, Colorado State University, United States · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“two asteraceous weeds, Ageratum conyzoides and Solanecio biafrae”

✓ located verbatim in the source · abstract, characters 665–729 · show in text ↑
e1

“Isolates of P. infestans from huckleberry, potato and tomato infected the same host plants”

✓ located verbatim in the source · abstract, characters 518–608 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The isolates also infected Solanecio biafrae.

Taxon
Solanecio biafraeSolanecio biafraee0
Interactor
P. infestansPhytophthora infestanse1pathogen
Outcome
infectede1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Phytophthora infestans
Phytophthora infestans · InteractorHoward F. Schwartz, Colorado State University, United States · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“two asteraceous weeds, Ageratum conyzoides and Solanecio biafrae”

✓ located verbatim in the source · abstract, characters 665–729 · show in text ↑
e1

“Isolates of P. infestans from huckleberry, potato and tomato infected the same host plants”

✓ located verbatim in the source · abstract, characters 518–608 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculum from infected S. macrocarpon caused late blight symptoms on huckleberry in laboratory and screen house tests.

Taxon
huckleberrye0
Treatment
Inocula recovered from infected S. macrocarpone0
Interactor
P. infestansPhytophthora infestanse1pathogen
Outcome
late blight symptomse0
Setting
laboratory and screen house conditionse0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Phytophthora infestans
Phytophthora infestans · InteractorHoward F. Schwartz, Colorado State University, United States · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Inocula recovered from infected S. macrocarpon caused late blight symptoms on huckleberry, potato and tomato both under laboratory and screen house conditions”

✓ located verbatim in the source · abstract, characters 731–889 · show in text ↑
e1

“P. infestans from huckleberry, potato and tomato”

✓ located verbatim in the source · abstract, characters 530–578 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculum from infected S. macrocarpon caused late blight symptoms on potato in laboratory and screen house tests.

Treatment
Inocula recovered from infected S. macrocarpone0
Interactor
P. infestansPhytophthora infestanse1pathogen
Outcome
late blight symptomse0
Setting
laboratory and screen house conditionse0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗
Phytophthora infestans
Phytophthora infestans · InteractorHoward F. Schwartz, Colorado State University, United States · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Inocula recovered from infected S. macrocarpon caused late blight symptoms on huckleberry, potato and tomato both under laboratory and screen house conditions”

✓ located verbatim in the source · abstract, characters 731–889 · show in text ↑
e1

“P. infestans from huckleberry, potato and tomato”

✓ located verbatim in the source · abstract, characters 530–578 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculum from infected S. macrocarpon caused late blight symptoms on tomato in laboratory and screen house tests.

Treatment
Inocula recovered from infected S. macrocarpone0
Interactor
P. infestansPhytophthora infestanse1pathogen
Outcome
late blight symptomse0
Setting
laboratory and screen house conditionse0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Phytophthora infestans
Phytophthora infestans · InteractorHoward F. Schwartz, Colorado State University, United States · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Inocula recovered from infected S. macrocarpon caused late blight symptoms on huckleberry, potato and tomato both under laboratory and screen house conditions”

✓ located verbatim in the source · abstract, characters 731–889 · show in text ↑
e1

“P. infestans from huckleberry, potato and tomato”

✓ located verbatim in the source · abstract, characters 530–578 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculum from the two asteraceous weeds reinfected potato in the laboratory.

Interactor
P. infestansPhytophthora infestanse1pathogen
Outcome
reinfected potatoe0
Setting
laboratorye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗
Phytophthora infestans
Phytophthora infestans · InteractorHoward F. Schwartz, Colorado State University, United States · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“those from both asteraceous weeds reinfected potato in the laboratory”

✓ located verbatim in the source · abstract, characters 897–966 · show in text ↑
e1

“P. infestans from huckleberry, potato and tomato”

✓ located verbatim in the source · abstract, characters 530–578 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculum from S. biafrae reinfected huckleberry in the screen house.

Taxon
huckleberrye0
Interactor
P. infestansPhytophthora infestanse1pathogen
Outcome
reinfected huckleberrye0
Setting
screen housee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Phytophthora infestans
Phytophthora infestans · InteractorHoward F. Schwartz, Colorado State University, United States · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“inoculum from S. biafrae reinfected huckleberry in the screen house”

✓ located verbatim in the source · abstract, characters 971–1038 · show in text ↑
e1

“P. infestans from huckleberry, potato and tomato”

✓ located verbatim in the source · abstract, characters 530–578 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Late blight infection of S. macrocarpon was observed for the first time in Cameroon.

Taxon
S. macrocarponSolanum macrocarpone0
Outcome
late blight infectione0
Qualifier
first observatione0
Setting
Cameroone0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum macrocarpon
Solanum macrocarpon · Taxon · picture from its Wikimedia Commons categoryVinayaraj · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“first observation of late blight infection on S. macrocarpon, A. conyzoides and S. biafrae in Cameroon”

✓ located verbatim in the source · abstract, characters 1050–1152 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Late blight infection of A. conyzoides was observed for the first time in Cameroon.

Taxon
A. conyzoidesAgeratum conyzoidese0
Outcome
late blight infectione0
Qualifier
first observatione0
Setting
Cameroone0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ageratum conyzoides
Ageratum conyzoides · TaxonMinghong · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“first observation of late blight infection on S. macrocarpon, A. conyzoides and S. biafrae in Cameroon”

✓ located verbatim in the source · abstract, characters 1050–1152 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Late blight infection of S. biafrae was observed for the first time in Cameroon.

Taxon
S. biafraeSolanecio biafraee0
Outcome
late blight infectione0
Qualifier
first observatione0
Setting
Cameroone0

Verbatim

e0

“first observation of late blight infection on S. macrocarpon, A. conyzoides and S. biafrae in Cameroon”

✓ located verbatim in the source · abstract, characters 1050–1152 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors identify the two asteraceous weeds and S. macrocarpon as potential alternative P. infestans hosts.

Taxon
S. macrocarponSolanum macrocarpone0
Interactor
P. infestansPhytophthora infestanse0pathogen
Outcome
potential alternative hosts for P. infestanse0
Qualifier
both asteraceous weedse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum macrocarpon
Solanum macrocarpon · Taxon · picture from its Wikimedia Commons categoryVinayaraj · CC BY-SA 3.0 · Wikimedia Commons ↗
Phytophthora infestans
Phytophthora infestans · InteractorHoward F. Schwartz, Colorado State University, United States · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“both asteraceous weeds and S. macrocarpon as potential alternative hosts for P. infestans in garden huckleberry, potato or tomato fields”

✓ located verbatim in the source · abstract, characters 1189–1325 · show in text ↑

infection · Phytophthora infestans · Solanum lycopersicum (tomato)Positive and negative results

5 papers: 3 positive, 2 negative or no effect

1 paper in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

inoculation · Phytophthora infestans · Solanum lycopersicum (tomato)Positive and negative results

8 papers: 6 positive, 2 negative or no effect

1 paper in the same direction as this paper · 6 in the opposite direction

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

infection · Phytophthora infestans · Solanum tuberosum (potato)Positive and negative results

27 papers: 15 positive, 12 negative or no effect

11 papers in the same direction as this paper · 15 in the opposite direction

  1. positive
  2. positive
  3. positive

23 papers more in this group

See all 27 papers →

inoculation · Phytophthora infestans · Solanum tuberosum (potato)Positive and negative results

40 papers: 24 positive, 16 negative or no effect

15 papers in the same direction as this paper · 24 in the opposite direction

  1. positive
  2. positive
  3. positive

36 papers more in this group

See all 40 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.