Paper · 2026 · Microbes and Environments

Temperature Effects on Symptom Expression of Lettuce Black Root Rot Caused by Berkeleyomyces rouxiae

Misaki Edamoto; Toshiyuki Usami

5
claims
9
verbatim quotes
0
citations
1
research areas
✓
Open access · cc-by

Abstract

Lettuce black root rot caused by Berkeleyomyces rouxiae occurs during the hot season in Japan, whereas black root rot in other crops often develops during cooler seasons. The present study investigated the relationship between temperature and symptom severity in lettuce and other plant species. Inoculation tests conducted with different isolates revealed that symptoms on lettuce were the most severe at 25°C, whereas those on cotton, okra, and cowpea were the most severe at 15-20°C. These results align with the seasonal occurrence of lettuce black root rot in Japan. The present study provides valuable insights for predicting and managing this disease.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 5

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Symptoms on lettuce caused by Berkeleyomyces rouxiae were most severe at 25°C in inoculation tests.

Taxon
lettuceLactuca sativae0
Treatment
25°Ce0
Interactor
Berkeleyomyces rouxiaeBerkeleyomyces rouxiaet0pathogen
Outcome
symptomse0
Direction
most severee0

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“symptoms on lettuce were the most severe at 25°C, whereas those on cotton, okra, and cowpea were the most severe at 15-20°C”

✓ located verbatim in the source · abstract, characters 362–485 · show in text ↑
t0

“Caused by Berkeleyomyces rouxiae”

✓ located verbatim in the source · title, characters 68–100 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Symptoms on cotton caused by Berkeleyomyces rouxiae were most severe at 15-20°C in inoculation tests.

Treatment
15-20°Ce0
Interactor
Berkeleyomyces rouxiaeBerkeleyomyces rouxiaet0pathogen
Outcome
symptomse0
Direction
most severee0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“symptoms on lettuce were the most severe at 25°C, whereas those on cotton, okra, and cowpea were the most severe at 15-20°C”

✓ located verbatim in the source · abstract, characters 362–485 · show in text ↑
t0

“Caused by Berkeleyomyces rouxiae”

✓ located verbatim in the source · title, characters 68–100 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Symptoms on okra caused by Berkeleyomyces rouxiae were most severe at 15-20°C in inoculation tests.

Treatment
15-20°Ce0
Interactor
Berkeleyomyces rouxiaeBerkeleyomyces rouxiaet0pathogen
Outcome
symptomse0
Direction
most severee0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“symptoms on lettuce were the most severe at 25°C, whereas those on cotton, okra, and cowpea were the most severe at 15-20°C”

✓ located verbatim in the source · abstract, characters 362–485 · show in text ↑
t0

“Caused by Berkeleyomyces rouxiae”

✓ located verbatim in the source · title, characters 68–100 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Symptoms on cowpea caused by Berkeleyomyces rouxiae were most severe at 15-20°C in inoculation tests.

Treatment
15-20°Ce0
Interactor
Berkeleyomyces rouxiaeBerkeleyomyces rouxiaet0pathogen
Outcome
symptomse0
Direction
most severee0

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“symptoms on lettuce were the most severe at 25°C, whereas those on cotton, okra, and cowpea were the most severe at 15-20°C”

✓ located verbatim in the source · abstract, characters 362–485 · show in text ↑
t0

“Caused by Berkeleyomyces rouxiae”

✓ located verbatim in the source · title, characters 68–100 · show in text ↑
Associationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The seasonal temperature pattern of the inoculation results agrees with the seasonal occurrence of lettuce black root rot in Japan.

Taxon
lettuceLactuca sativae1
Outcome
seasonal occurrence of lettuce black root rote1
Setting
Japane1

Not reportedDirection

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e1

“These results align with the seasonal occurrence of lettuce black root rot in Japan”

✓ located verbatim in the source · abstract, characters 487–570 · show in text ↑