Abstract
The effect of crude xyloglucan (XG) preparations from jatobá (Hymenaea courbaril var. stilbocarpa (Hayne) Y. T. Lee & Langenh.) seeds on Arabidopsis thaliana (L.) Heynh. root system development was investigated. The XG extracts exerted a dual effect on root system development by slowing down root growth and improving lateral root formation. These observed morphological changes were not due to oligosaccharides that could be generated following hydrolysis of the XG polymers, since XG hydrolysate induced a drastic inhibition of the overall growth process of the Arabidopsis thaliana seedlings. Histochemical test of GUS gene expression assay performed on seven and 14-days-old transgenic Arabidopsis thaliana plants carrying the CycB1;1-GUS fusion indicated that the improvement of the lateral root development by jatobá XG extracts was not correlated with the expression of this cell cycle marker gene in the root system. A potential agricultural application of jatobá seeds XG extract is discussed.
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Claims 5
Claim · model-written summary
XG extracts slowed root growth of Arabidopsis seedlings.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Treatment
- XG extractse1
- Outcome
- root growthe1
- Direction
- slowing downe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana seedling growth”
e1“The XG extracts exerted a dual effect on root system development by slowing down root growth and improving lateral root formation”
Claim · model-written summary
XG extracts improved lateral root formation in Arabidopsis seedlings.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- XG extractse1
- Outcome
- lateral root formatione1
- Direction
- improvinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana seedling growth”
e1“The XG extracts exerted a dual effect on root system development by slowing down root growth and improving lateral root formation”
Claim · model-written summary
XG hydrolysate drastically inhibited overall growth of Arabidopsis seedlings.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- XG hydrolysatee2
- Outcome
- overall growth process of the Arabidopsis thaliana seedlingse2
- Direction
- drastic inhibitione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana seedling growth”
e2“XG hydrolysate induced a drastic inhibition of the overall growth process of the Arabidopsis thaliana seedlings”
Claim · model-written summary
The morphological changes were not due to oligosaccharides generated by XG hydrolysis.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Outcome
- morphological changese3
- Qualifier
- not due to oligosaccharidese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana seedling growth”
e3“These observed morphological changes were not due to oligosaccharides that could be generated following hydrolysis of the XG polymers”
Claim · model-written summary
Lateral root improvement by XG extracts was not correlated with expression of the CycB1;1 cell-cycle marker gene.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- XG extractse4
- Gene
- CycB1;1e5
- Outcome
- expression of this cell cycle marker genee4
- Direction
- not correlatede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana seedling growth”
e4“the improvement of the lateral root development by jatobá XG extracts was not correlated with the expression of this cell cycle marker gene in the root system”
e5“carrying the CycB1;1-GUS fusion”
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