Abstract
Though recent work has demonstrated that plants can recognize species, kin versus strangers, and self/non-self roots, no mechanism for identity recognition in plants has yet been found. Here we examined the role of soluble chemicals in signaling among roots. Utilizing Arabidopsis thaliana, we exposed young seedlings to liquid media containing exudates from siblings, strangers (non-siblings), or only their own exudates. In one experiment, root secretions were inhibited by sodium orthovanadate and root length and number of lateral roots were measured. In a second experiment, responses to siblings, strangers, and their own exudates were measured for several accessions (genotypes), and the traits of length of the longest lateral root and hypocotyl length were also measured. The exposure of plants to the root exudates of strangers induced greater lateral root formation than exposure of plants to sibling exudates. Stranger recognition was abolished upon treatment with the secretion inhibitor. In one experiment, plants exposed to sibling or stranger exudates have shorter roots than plants only exposed to their own exudates. This self/non-self recognition response was not affected by the secretion inhibitor. The results demonstrate that that kin recognition and self/non-self are two separate identity recognition systems involving soluble chemicals. Kin recognition requires active secretion by roots.
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Claims 7
Claim · model-written summary
Stranger root exudates induced greater lateral root formation than sibling exudates.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae1 - Organ / stage
- lateral roote0
- Treatment
- root exudates of strangerse0
- Outcome
- lateral root formatione0
- Direction
- greatere0
- Comparator
- sibling exudatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The exposure of plants to the root exudates of strangers induced greater lateral root formation than exposure of plants to sibling exudates.”
t0“plants”
e1“Utilizing Arabidopsis thaliana”
Claim · model-written summary
Secretion inhibitor treatment abolished stranger recognition.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- treatment with the secretion inhibitore0
- Outcome
- Stranger recognitione0
- Direction
- abolishede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stranger recognition was abolished upon treatment with the secretion inhibitor.”
e1“Utilizing Arabidopsis thaliana”
Claim · model-written summary
Seedlings exposed to sibling exudates had shorter roots than seedlings exposed only to their own exudates in one experiment.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- siblinge0
- Outcome
- rootse0
- Direction
- shortere0
- Qualifier
- In one experimente0
- Comparator
- their own exudatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In one experiment, plants exposed to sibling or stranger exudates have shorter roots than plants only exposed to their own exudates.”
e1“Utilizing Arabidopsis thaliana”
Claim · model-written summary
Seedlings exposed to stranger exudates had shorter roots than seedlings exposed only to their own exudates in one experiment.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- stranger exudatese0
- Outcome
- rootse0
- Direction
- shortere0
- Qualifier
- In one experimente0
- Comparator
- their own exudatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In one experiment, plants exposed to sibling or stranger exudates have shorter roots than plants only exposed to their own exudates.”
e1“Utilizing Arabidopsis thaliana”
Claim · model-written summary
The secretion inhibitor did not affect the self/non-self recognition response.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- the secretion inhibitore0
- Outcome
- self/non-self recognition responsee0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This self/non-self recognition response was not affected by the secretion inhibitor.”
e1“Utilizing Arabidopsis thaliana”
Claim · model-written summary
The authors conclude that kin recognition requires active root secretion.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Outcome
- Kin recognitione0
- Qualifier
- active secretion by rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kin recognition requires active secretion by roots.”
e1“Utilizing Arabidopsis thaliana”
Claim · model-written summary
The authors distinguish kin recognition and self/non-self recognition as separate identity systems involving soluble chemicals.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Outcome
- two separate identity recognition systemse0
- Qualifier
- involving soluble chemicalse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“kin recognition and self/non-self are two separate identity recognition systems involving soluble chemicals.”
e1“Utilizing Arabidopsis thaliana”
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1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
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.