Abstract
The expression of a lipid transfer protein (LTP) gene is regulated in Oryza sativa roots in response to colonization by the mycorrhizal fungus Glomus mosseae. Transcript levels increased when the fungus forms appressoria and penetrates the root epidermis and decreased at the onset of the intercellular colonization of the root cortex. The analysis of histochemical GUS staining in transgenic rice plants carrying the Ltp/Gus construct confirm the induction of LTP: gene associated with fungal appressoria formation and penetration area. The induction of Ltp gene expression coincided in time with a transient increase in the expression of a phenylalanine ammonia-lyase (PAL:) gene and a transient accumulation of salicylic acid (SA) in the mycorrhizal roots. The expression of LTP: and PAL: was induced in rice roots after treatment with SA and Pseudomonas syringae indicating that both genes could be implicated in the plant defence response. The exogenous application of SA to rice interacting with the mycorrhizal fungus did not affect appressoria formation but, instead, resulted in a transient delay of root mycorrhization. Nevertheless, although LTP: maintained a prolonged SA-induced expression level, mycorrhizal formation could still proceed.
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Claims 10
Claim · model-written summary
Ltp transcript levels in rice roots increased as Glomus mosseae formed appressoria and penetrated the root epidermis.
- Taxon
- Oryza sativa
Oryza sativae1 - Organ / stage
- root epidermise2
- Interactor
- Glomus mosseae
Funneliformis mosseaee1symbiont - Gene
- lipid transfer protein (LTP)e1
- Outcome
- Transcript levelse2
- Direction
- increasede2
- Qualifier
- when the fungus forms appressoria and penetratese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The expression of a lipid transfer protein (LTP) gene is regulated in Oryza sativa roots in response to colonization by the mycorrhizal fungus Glomus mosseae”
e2“Transcript levels increased when the fungus forms appressoria and penetrates the root epidermis and decreased at the onset of the intercellular colonization of the root cortex”
Claim · model-written summary
Ltp transcript levels in rice roots decreased at the onset of intercellular colonization of the root cortex.
- Taxon
- Oryza sativaOryza sativae1
- Organ / stage
- root cortexe2
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Gene
- lipid transfer protein (LTP)e1
- Outcome
- Transcript levelse2
- Direction
- decreasede2
- Qualifier
- at the onset of the intercellular colonizatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The expression of a lipid transfer protein (LTP) gene is regulated in Oryza sativa roots in response to colonization by the mycorrhizal fungus Glomus mosseae”
e2“Transcript levels increased when the fungus forms appressoria and penetrates the root epidermis and decreased at the onset of the intercellular colonization of the root cortex”
Claim · model-written summary
Histochemical GUS staining in transgenic rice carrying the Ltp/Gus construct was associated with appressoria formation and penetration area.
- Taxon
- riceOryza sativae2
- Material
- transgenic rice plantse2
- Gene
- Ltpe2
- Outcome
- histochemical GUS staininge2
- Direction
- increaseinferrede2
- Qualifier
- associated with fungal appressoria formation and penetration areae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The expression of a lipid transfer protein (LTP) gene is regulated in Oryza sativa roots in response to colonization by the mycorrhizal fungus Glomus mosseae”
e2“The analysis of histochemical GUS staining in transgenic rice plants carrying the Ltp/Gus construct confirm the induction of LTP: gene associated with fungal appressoria formation and penetration area”
Claim · model-written summary
Ltp expression coincided in time with a transient increase in phenylalanine ammonia-lyase (PAL) expression in rice.
- Taxon
- riceOryza sativae1
- Gene
- phenylalanine ammonia-lyase (PAL:)e2
- Outcome
- expressione2
- Direction
- increasee2
- Qualifier
- coincided in time withe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The expression of LTP: and PAL: was induced in rice roots after treatment with SA and Pseudomonas syringae”
e2“The induction of Ltp gene expression coincided in time with a transient increase in the expression of a phenylalanine ammonia-lyase (PAL:) gene and a transient accumulation of salicylic acid (SA) in the mycorrhizal roots”
Claim · model-written summary
Salicylic acid accumulated transiently in the mycorrhizal roots of rice.
- Taxon
- riceOryza sativae1
- Organ / stage
- mycorrhizal rootse2
- Outcome
- accumulation of salicylic acid (SA)e2
- Direction
- increaseinferrede2
- Qualifier
- transiente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The expression of LTP: and PAL: was induced in rice roots after treatment with SA and Pseudomonas syringae”
e2“The induction of Ltp gene expression coincided in time with a transient increase in the expression of a phenylalanine ammonia-lyase (PAL:) gene and a transient accumulation of salicylic acid (SA) in the mycorrhizal roots”
Claim · model-written summary
Salicylic acid treatment and Pseudomonas syringae induced LTP and PAL expression in rice roots.
- Taxon
- riceOryza sativae1
- Treatment
- treatment with SA and Pseudomonas syringaee1
- Interactor
- Pseudomonas syringae
Pseudomonas syringaee1pathogen - Gene
- LTP: and PAL:e1
- Outcome
- expressione1
- Direction
- inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The expression of LTP: and PAL: was induced in rice roots after treatment with SA and Pseudomonas syringae”
Claim · model-written summary
Exogenous salicylic acid did not affect appressoria formation of Glomus mosseae on rice roots.
- Taxon
- riceOryza sativae1
- Treatment
- exogenous application of SAe1
- Outcome
- appressoria formatione1
- Direction
- did not affecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The exogenous application of SA to rice interacting with the mycorrhizal fungus did not affect appressoria formation”
Claim · model-written summary
Exogenous salicylic acid caused a transient delay of root mycorrhization in rice.
- Taxon
- riceOryza sativae1
- Treatment
- exogenous application of SAe1
- Outcome
- root mycorrhizatione2
- Direction
- delaye2
- Qualifier
- transiente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The exogenous application of SA to rice interacting with the mycorrhizal fungus did not affect appressoria formation”
e2“resulted in a transient delay of root mycorrhization”
Claim · model-written summary
LTP expression in rice maintained a prolonged level under SA-induced expression.
- Taxon
- riceOryza sativae1
- Treatment
- SAe2
- Gene
- LTP:e2
- Outcome
- expression levele2
- Direction
- maintained a prolongede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The expression of LTP: and PAL: was induced in rice roots after treatment with SA and Pseudomonas syringae”
e2“LTP: maintained a prolonged SA-induced expression level, mycorrhizal formation could still proceed”
Claim · model-written summary
Mycorrhizal formation could still proceed in rice roots despite prolonged SA-induced LTP expression.
- Taxon
- riceOryza sativae1
- Treatment
- SAe2
- Outcome
- mycorrhizal formatione2
- Direction
- could still proceede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The expression of LTP: and PAL: was induced in rice roots after treatment with SA and Pseudomonas syringae”
e2“LTP: maintained a prolonged SA-induced expression level, mycorrhizal formation could still proceed”
The same questions in other papers
salicylic acid · disease · Oryza sativa (rice)Positive and negative results
4 papers in the same direction as this paper · 26 in the opposite direction
- positive
- positive
- positive
27 papers more in this group
See all 31 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.