Abstract
Improving the root system architecture (RSA) under adverse environmental conditions by using biostimulants is emerging as a new way to boost crop productivity. Recently, we have reported the characterization of novel chitosan-based microparticles (CS-MPs) with promising biological properties as rooting agents in lettuce. In this work, we demonstrated that in contrast to bulk chitosan (CS), which exerts root growth inhibition, CS-MPs promoted root growth and development from 1 to 10 μg mL–1 without cytotoxicity effects at higher doses in Arabidopsis and lettuce seedlings. In addition, we studied the mechanistic mode of action of CS-MPs in the development of early RSA in the Arabidopsis model. CS-MPs unchained accurate and sustained spatio-temporal activation of the nuclear auxin signaling pathway. Our findings validated a promising scenario for the application of CS-MPs in the modulation of RSA to respond to changing soil environments and improve crop performance.
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Claims 7
Claim · model-written summary
Bulk chitosan inhibited root growth in Arabidopsis seedlings.
- Taxon
- Arabidopsis
Arabidopsise0 - Treatment
- bulk chitosan (CS)e0
- Outcome
- root growthe0
- Direction
- inhibitione0
- Comparator
- CS-MPse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in contrast to bulk chitosan (CS), which exerts root growth inhibition, CS-MPs promoted root growth and development from 1 to 10 μg mL–1 without cytotoxicity effects at higher doses in Arabidopsis and lettuce seedlings.”
Claim · model-written summary
Bulk chitosan inhibited root growth in lettuce seedlings.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- bulk chitosan (CS)e0
- Outcome
- root growthe0
- Direction
- inhibitione0
- Comparator
- CS-MPse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in contrast to bulk chitosan (CS), which exerts root growth inhibition, CS-MPs promoted root growth and development from 1 to 10 μg mL–1 without cytotoxicity effects at higher doses in Arabidopsis and lettuce seedlings.”
Claim · model-written summary
CS-MPs promoted root growth and development at 1 to 10 μg mL–1 in Arabidopsis seedlings compared with bulk chitosan.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- CS-MPse0
- Outcome
- root growth and developmente0
- Direction
- promotede0
- Value
- 1 to 10 μg mL–1e0
- Comparator
- bulk chitosan (CS)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in contrast to bulk chitosan (CS), which exerts root growth inhibition, CS-MPs promoted root growth and development from 1 to 10 μg mL–1 without cytotoxicity effects at higher doses in Arabidopsis and lettuce seedlings.”
Claim · model-written summary
CS-MPs promoted root growth and development at 1 to 10 μg mL–1 in lettuce seedlings compared with bulk chitosan.
- Taxon
- lettuceLactuca sativae0
- Treatment
- CS-MPse0
- Outcome
- root growth and developmente0
- Direction
- promotede0
- Value
- 1 to 10 μg mL–1e0
- Comparator
- bulk chitosan (CS)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in contrast to bulk chitosan (CS), which exerts root growth inhibition, CS-MPs promoted root growth and development from 1 to 10 μg mL–1 without cytotoxicity effects at higher doses in Arabidopsis and lettuce seedlings.”
Claim · model-written summary
CS-MPs showed no cytotoxicity at higher doses in Arabidopsis seedlings.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- CS-MPse0
- Outcome
- cytotoxicity effectse0
- Direction
- withoute0
- Qualifier
- higher dosese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CS-MPs promoted root growth and development from 1 to 10 μg mL–1 without cytotoxicity effects at higher doses in Arabidopsis and lettuce seedlings.”
Claim · model-written summary
CS-MPs showed no cytotoxicity at higher doses in lettuce seedlings.
- Taxon
- lettuceLactuca sativae0
- Treatment
- CS-MPse0
- Outcome
- cytotoxicity effectse0
- Direction
- withoute0
- Qualifier
- higher dosese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CS-MPs promoted root growth and development from 1 to 10 μg mL–1 without cytotoxicity effects at higher doses in Arabidopsis and lettuce seedlings.”
Claim · model-written summary
CS-MPs induced sustained spatial and temporal activation of nuclear auxin signaling in Arabidopsis.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- CS-MPse0
- Outcome
- nuclear auxin signaling pathwaye0
- Direction
- activatione0
- Qualifier
- sustained spatio-temporale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CS-MPs unchained accurate and sustained spatio-temporal activation of the nuclear auxin signaling pathway.”
e1“in the Arabidopsis model.”
The same questions in other papers
chitosan · growth · Lactuca sativa (garden lettuce)Positive and negative results
7 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →chitosan · growth · ArabidopsisResults agree
2 papers in the same direction as this paper
- negative
- negative
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.