Abstract
Plants recognize certain microbial compounds as elicitors in their active defence mechanisms. It has been shown that a series of defence reactions are induced in potato plant cells after treatment with water-soluble hyphal wall components prepared from Phytophthora infestans. In this study, a methanol extract from mycelia of P. infestans (MEM), which contains lipophilic compounds, was used as another elicitor for the induction of the defence reactions in potato. MEM elicitor induced reactive oxygen species (ROS), especially O2(-) and H2O2 production, and nitric oxide (NO) generation in potato leaves and suspension-cultured cells. Hypersensitive cell death was detected in potato leaves within 6-8 h after MEM elicitor treatment. The accumulation of phytoalexins was detected by MEM elicitor treatment in potato tubers. In potato suspension-cultured cells, several defence-related genes were induced by MEM elicitors, namely Strboh, Sthsr203J, StPVS3, StPR1, and StNR5, which regulate various defence-related functions. Enhanced resistance against P. infestans was found in MEM-treated potato plants. These results suggested that MEM elicitor is recognized by host and enhances defence activities to produce substances inhibitory to pathogens.
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Claims 6
Claim · model-written summary
MEM elicitor induced reactive oxygen species and nitric oxide generation in potato leaves and cultured cells.
- Taxon
- potato
Solanum tuberosume0 - Organ / stage
- leaves and suspension-cultured cellse0
- Treatment
- MEM elicitore0
- Outcome
- reactive oxygen species (ROS), especially O2(-) and H2O2 production, and nitric oxide (NO) generatione0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MEM elicitor induced reactive oxygen species (ROS), especially O2(-) and H2O2 production, and nitric oxide (NO) generation in potato leaves and suspension-cultured cells.”
Claim · model-written summary
MEM elicitor treatment caused hypersensitive cell death in potato leaves within 6-8 h.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- leavese0
- Treatment
- MEM elicitor treatmente0
- Outcome
- Hypersensitive cell deathe0
- Qualifier
- within 6-8 he0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hypersensitive cell death was detected in potato leaves within 6-8 h after MEM elicitor treatment.”
Claim · model-written summary
MEM elicitor treatment led to phytoalexin accumulation in potato tubers.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- tuberse0
- Treatment
- MEM elicitor treatmente0
- Outcome
- accumulation of phytoalexinse0
- Direction
- accumulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulation of phytoalexins was detected by MEM elicitor treatment in potato tubers.”
Claim · model-written summary
MEM elicitors induced five defence related genes in potato suspension cultured cells.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- suspension-cultured cellse0
- Treatment
- MEM elicitorse0
- Gene
- Strboh, Sthsr203J, StPVS3, StPR1, and StNR5e0
- Outcome
- defence-related genese0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In potato suspension-cultured cells, several defence-related genes were induced by MEM elicitors, namely Strboh, Sthsr203J, StPVS3, StPR1, and StNR5”
Claim · model-written summary
MEM treated potato plants had enhanced resistance against P. infestans.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- MEM-treatede0
- Interactor
- P. infestans
Phytophthora infestanse0pathogen - Outcome
- resistance against P. infestanse0
- Direction
- Enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced resistance against P. infestans was found in MEM-treated potato plants.”
Claim · model-written summary
The authors suggest that the host recognizes MEM elicitor and enhances defence activity to produce pathogen inhibitory substances.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- MEM elicitore0
- Outcome
- defence activities to produce substances inhibitory to pathogense0
- Direction
- enhancese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MEM elicitor is recognized by host and enhances defence activities to produce substances inhibitory to pathogens”
t0“potato”
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2 papers more in this group
See all 6 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.