Abstract
Efficacy of Epicoccum nigrum and its exudate was tested in control the pre- and post-emergence damping-off and root-rot of Egyptian cotton (cv. Giza 83) in vitro and in vivo. Different isolates of Epicoccum nigrum reduced the radial growth of both Pythium debaryanum and P. ultimum significantly, by production considerable inhibition zones. In liquid cultures E. nigrum exudate showed a high fungicidal effect resulting in a significant reduction of the mycelial dry weight of the two investigated Pythium spp. Also E. nigrum exudate inhibited cellulase and pectinase activity by P. debaryanum and P. ultimum. Soaking of cotton seeds in E. nigrum exudate for different intervals resulted in significant reduction of root-rot severity of seedlings as well as the contamination of seeds and seedlings by fungi during and after germination. These treatments also stimulated germination of cotton seeds and enhanced the seedlings vigour significantly. In pot experiments, the use of E. nigrum as a soil mixture or seed dressing significantly alleviated the hazard effect of P. debaryanum. Pythium ultimum seemed to be weak or non pathogen to the used cotton cultivar (Giza 83). Application of E. nigrum or its exudate not only involved in protection of cotton seedlings against Pythium damping-off and root-rot but also enhanced their vigour and growth characteristics. The main conclusion of this study is that E. nigrum could be used successfully as environmentally safe and economic biological control agent to protect cotton (cv. Giza 83) from damping-off and root-rot diseases caused by P. debaryanum.
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Claims 11
Claim · model-written summary
Epicoccum isolates significantly reduced Pythium debaryanum radial growth.
- Taxon
- Egyptian cotton
.jpg?width=60)
Gossypium barbadensee1 - Treatment
- Epicoccum nigrume0
- Interactor
- Pythium debaryanum
Globisporangium debaryanume0pathogen - Second interactor
- Epicoccum nigrum
Epicoccum nigrume0biocontrol_agent - Outcome
- radial growth of both Pythium debaryanum and P. ultimume0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Different isolates of Epicoccum nigrum reduced the radial growth of both Pythium debaryanum and P. ultimum significantly”
e1“Egyptian cotton (cv. Giza 83)”
Claim · model-written summary
Epicoccum isolates significantly reduced P. ultimum radial growth.
- Taxon
- Egyptian cottonGossypium barbadensee1
- Treatment
- Epicoccum nigrume0
- Interactor
- P. ultimumGlobisporangium ultimume0pathogen
- Second interactor
- Epicoccum nigrumEpicoccum nigrume0biocontrol_agent
- Outcome
- radial growth of both Pythium debaryanum and P. ultimume0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Different isolates of Epicoccum nigrum reduced the radial growth of both Pythium debaryanum and P. ultimum significantly”
e1“Egyptian cotton (cv. Giza 83)”
Claim · model-written summary
Epicoccum exudate significantly reduced mycelial dry weight of the two Pythium species in liquid culture.
- Taxon
- Egyptian cottonGossypium barbadensee1
- Treatment
- E. nigrum exudatee0
- Second interactor
- E. nigrumEpicoccum nigrume0biocontrol_agent
- Outcome
- mycelial dry weight of the two investigated Pythium spp.e0
- Direction
- reductione0
- Setting
- liquid culturese0
.jpg?width=60){kind=small}
PythiumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“In liquid cultures E. nigrum exudate showed a high fungicidal effect resulting in a significant reduction of the mycelial dry weight of the two investigated Pythium spp.”
e1“Egyptian cotton (cv. Giza 83)”
Claim · model-written summary
Epicoccum exudate inhibited cellulase and pectinase activity in P. debaryanum.
- Taxon
- Egyptian cottonGossypium barbadensee1
- Treatment
- E. nigrum exudatee0
- Interactor
- P. debaryanumGlobisporangium debaryanume0pathogen
- Second interactor
- E. nigrumEpicoccum nigrume0biocontrol_agent
- Outcome
- cellulase and pectinase activitye0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“E. nigrum exudate inhibited cellulase and pectinase activity by P. debaryanum and P. ultimum”
e1“Egyptian cotton (cv. Giza 83)”
Claim · model-written summary
Epicoccum exudate inhibited cellulase and pectinase activity in P. ultimum.
- Taxon
- Egyptian cottonGossypium barbadensee1
- Treatment
- E. nigrum exudatee0
- Interactor
- P. ultimumGlobisporangium ultimume0pathogen
- Second interactor
- E. nigrumEpicoccum nigrume0biocontrol_agent
- Outcome
- cellulase and pectinase activitye0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“E. nigrum exudate inhibited cellulase and pectinase activity by P. debaryanum and P. ultimum”
e1“Egyptian cotton (cv. Giza 83)”
Claim · model-written summary
Soaking cotton seed in Epicoccum exudate significantly reduced seedling root rot and fungal contamination.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- Soaking of cotton seeds in E. nigrum exudatee0
- Second interactor
- E. nigrumEpicoccum nigrume0biocontrol_agent
- Outcome
- root-rot severity of seedlings as well as the contamination of seeds and seedlings by fungie0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soaking of cotton seeds in E. nigrum exudate for different intervals resulted in significant reduction of root-rot severity of seedlings as well as the contamination of seeds and seedlings by fungi during and after germination”
Claim · model-written summary
The seed soaking treatments significantly stimulated cotton seed germination and seedling vigour.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Soaking of cotton seeds in E. nigrum exudatee1
- Interactor
- E. nigrumEpicoccum nigrume1biocontrol_agent
- Outcome
- germination of cotton seeds and enhanced the seedlings vigoure0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These treatments also stimulated germination of cotton seeds and enhanced the seedlings vigour significantly”
e1“Soaking of cotton seeds in E. nigrum exudate”
Claim · model-written summary
Epicoccum soil mixture or seed dressing significantly alleviated the effect of P. debaryanum in pots.
- Taxon
- Egyptian cottonGossypium barbadensee1
- Treatment
- E. nigrum as a soil mixture or seed dressinge0
- Interactor
- P. debaryanumGlobisporangium debaryanume0pathogen
- Second interactor
- E. nigrumEpicoccum nigrume0biocontrol_agent
- Outcome
- hazard effect of P. debaryanume0
- Direction
- alleviatede0
- Setting
- pot experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In pot experiments, the use of E. nigrum as a soil mixture or seed dressing significantly alleviated the hazard effect of P. debaryanum”
e1“Egyptian cotton (cv. Giza 83)”
Claim · model-written summary
P. ultimum appeared weakly or nonpathogenic to cotton Giza 83.
- Taxon
- cottonGossypium hirsutume0
- Material
- Giza 83e0
- Interactor
- Pythium ultimumGlobisporangium ultimume0pathogen
- Outcome
- weak or non pathogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pythium ultimum seemed to be weak or non pathogen to the used cotton cultivar (Giza 83)”
Claim · model-written summary
Epicoccum or its exudate protected cotton seedlings from damping off and root rot and enhanced growth.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- E. nigrum or its exudatee0
- Second interactor
- E. nigrumEpicoccum nigrume0biocontrol_agent
- Outcome
- protection of cotton seedlings against Pythium damping-off and root-rote0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of E. nigrum or its exudate not only involved in protection of cotton seedlings against Pythium damping-off and root-rot but also enhanced their vigour and growth characteristics”
Claim · model-written summary
The authors propose Epicoccum as a biological control agent for P. debaryanum damping off and root rot in cotton.
- Taxon
- cottonGossypium hirsutume0
- Interactor
- P. debaryanumGlobisporangium debaryanume0pathogen
- Second interactor
- E. nigrumEpicoccum nigrume0biocontrol_agent
- Outcome
- protect cotton (cv. Giza 83) from damping-off and root-rot diseasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“E. nigrum could be used successfully as environmentally safe and economic biological control agent to protect cotton (cv. Giza 83) from damping-off and root-rot diseases caused by P. debaryanum”
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95 papers in the same direction as this paper · 18 in the opposite direction · 1 reporting no difference from an alternative
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See all 115 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.