Abstract
Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark. The promotion of senescence increased with increase in the number of rubbings and could be seen after 24 h of dark incubation; the maximum effect was reached on day 3. The effect (% of control) of MP on the loss of protein was greater than the effect on chlorophyll (Chl) loss on day 1. However, on day 3 the effect of MP on the loss of Chl became greater than the effect on the loss of protein. Ethephon and 1‐aminocyclopropane‐1‐carboxylic acid (ACC) marginally promoted the loss of Chl by both control and rubbed oat leaf segments, and the effect was additive with MP. Chloramphenicol (CAP), spermine, aminoethoxyvinylglycine (AVG) and Ca 2+ marginally delayed the loss of Chl and protein in both control and rubbed segments. Kinetin greatly retarded the senescence of all segments. Even in the presence of these substances, the amounts of Chl and protein in the rubbed segments were always less than in their respective controls, thus retaining the effect of the MP. However, abscisic acid (ABA) and cycloheximide (CHI) caused the rubbed oat leaf segments to retain more Chl and protein than their respective control segments. The effect of CHI was actually enhanced by MP. Rubbing promoted the senescence of attached leaves of oats ( Avena sativa L. cv. Victory), maize ( Zea mays L. cv. Early Belle) and pumpkin ( Cucurbita pepo L. cv. Jack‐o‐lantern) cotyledons in the dark. Rubbing promoted the senescence of oat leaf segments even in light, although to a lesser extent compared to the effect in the dark. The senescence of leaves of pumpkin and cocklebur ( Xanthium strumarium Wallr. var. Pennsylvanicum ) in situ was also enhanced by MP.
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Claims 20
Claim · model-written summary
Mechanical perturbation promoted senescence of detached oat leaf segments in the dark.
- Taxon
- oat
Avena sativae0 - Material
- cv. Victorye0
- Organ / stage
- leaf segmentse0
- Treatment
- Mechanical perturbatione0
- Outcome
- senescencee0
- Direction
- promotede0
- Qualifier
- in the darke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
Claim · model-written summary
Senescence promotion by mechanical perturbation increased with the number of rubbings, with maximum effect on day 3.
- Taxon
- oatAvena sativae0
- Treatment
- number of rubbingse1
- Outcome
- promotion of senescencee1
- Direction
- increasede1
- Qualifier
- the maximum effect was reached on day 3e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“The promotion of senescence increased with increase in the number of rubbings and could be seen after 24 h of dark incubation; the maximum effect was reached on day 3”
Claim · model-written summary
On day 1, mechanical perturbation had a greater effect on protein loss than on chlorophyll loss in oat leaf segments.
- Taxon
- oatAvena sativae0
- Treatment
- MPe1
- Outcome
- loss of proteine1
- Direction
- greatere1
- Comparator
- effect on chlorophyll (Chl) losse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“The effect (% of control) of MP on the loss of protein was greater than the effect on chlorophyll (Chl) loss on day 1”
Claim · model-written summary
On day 3, mechanical perturbation had a greater effect on chlorophyll loss than on protein loss in oat leaf segments.
- Taxon
- oatAvena sativae0
- Treatment
- MPe1
- Outcome
- loss of Chle1
- Direction
- became greatere1
- Comparator
- effect on the loss of proteine1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“on day 3 the effect of MP on the loss of Chl became greater than the effect on the loss of protein”
Claim · model-written summary
Ethephon marginally promoted chlorophyll loss in control and rubbed oat leaf segments, and its effect was additive with mechanical perturbation.
- Taxon
- oatAvena sativae0
- Treatment
- Ethephone1
- Outcome
- loss of Chle1
- Direction
- promotede1
- Qualifier
- additive with MPe1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“Ethephon and 1‐aminocyclopropane‐1‐carboxylic acid (ACC) marginally promoted the loss of Chl by both control and rubbed oat leaf segments, and the effect was additive with MP”
Claim · model-written summary
Chloramphenicol marginally delayed chlorophyll and protein loss in control and rubbed oat leaf segments.
- Taxon
- oatAvena sativae0
- Treatment
- Chloramphenicol (CAP)e1
- Outcome
- loss of Chl and proteine1
- Direction
- delayede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“Chloramphenicol (CAP), spermine, aminoethoxyvinylglycine (AVG) and Ca 2+ marginally delayed the loss of Chl and protein in both control and rubbed segments”
Claim · model-written summary
Spermine marginally delayed chlorophyll and protein loss in control and rubbed oat leaf segments.
- Taxon
- oatAvena sativae0
- Treatment
- sperminee1
- Outcome
- loss of Chl and proteine1
- Direction
- delayede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“Chloramphenicol (CAP), spermine, aminoethoxyvinylglycine (AVG) and Ca 2+ marginally delayed the loss of Chl and protein in both control and rubbed segments”
Claim · model-written summary
Aminoethoxyvinylglycine marginally delayed chlorophyll and protein loss in control and rubbed oat leaf segments.
- Taxon
- oatAvena sativae0
- Treatment
- aminoethoxyvinylglycine (AVG)e1
- Outcome
- loss of Chl and proteine1
- Direction
- delayede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“Chloramphenicol (CAP), spermine, aminoethoxyvinylglycine (AVG) and Ca 2+ marginally delayed the loss of Chl and protein in both control and rubbed segments”
Claim · model-written summary
Calcium marginally delayed chlorophyll and protein loss in control and rubbed oat leaf segments.
- Taxon
- oatAvena sativae0
- Treatment
- Ca 2+e1
- Outcome
- loss of Chl and proteine1
- Direction
- delayede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“Chloramphenicol (CAP), spermine, aminoethoxyvinylglycine (AVG) and Ca 2+ marginally delayed the loss of Chl and protein in both control and rubbed segments”
Claim · model-written summary
Kinetin greatly retarded senescence of all oat leaf segments.
- Taxon
- oatAvena sativae0
- Treatment
- Kinetine1
- Outcome
- senescence of all segmentse1
- Direction
- retardede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“Kinetin greatly retarded the senescence of all segments”
Claim · model-written summary
Rubbed oat leaf segments kept less chlorophyll and protein than their controls even in the presence of the tested substances.
- Taxon
- oatAvena sativae0
- Outcome
- amounts of Chl and proteine1
- Direction
- less thane1
- Qualifier
- in the presence of these substancese1
- Comparator
- their respective controlse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“Even in the presence of these substances, the amounts of Chl and protein in the rubbed segments were always less than in their respective controls”
Claim · model-written summary
Abscisic acid caused rubbed oat leaf segments to retain more chlorophyll and protein than their control segments.
- Taxon
- oatAvena sativae0
- Treatment
- abscisic acid (ABA)e1
- Outcome
- Chl and proteine1
- Direction
- retain moree1
- Comparator
- their respective control segmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“abscisic acid (ABA) and cycloheximide (CHI) caused the rubbed oat leaf segments to retain more Chl and protein than their respective control segments”
Claim · model-written summary
Cycloheximide caused rubbed oat leaf segments to retain more chlorophyll and protein than their control segments.
- Taxon
- oatAvena sativae0
- Treatment
- cycloheximide (CHI)e1
- Outcome
- Chl and proteine1
- Direction
- retain moree1
- Comparator
- their respective control segmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“abscisic acid (ABA) and cycloheximide (CHI) caused the rubbed oat leaf segments to retain more Chl and protein than their respective control segments”
Claim · model-written summary
The effect of cycloheximide on senescence was enhanced by mechanical perturbation.
- Taxon
- oatAvena sativae0
- Treatment
- MPe1
- Outcome
- effect of CHIe1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical perturbation (MP, gentle tubbing) promoted the senescence of detached oat ( Avena sativa L. cv. Victory) leaf segments in the dark”
e1“The effect of CHI was actually enhanced by MP”
Claim · model-written summary
Rubbing promoted senescence of attached oat leaves.
- Taxon
- oatsAvena sativae0
- Material
- cv. Victorye0
- Organ / stage
- attached leavese0
- Treatment
- Rubbinge0
- Outcome
- senescencee0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rubbing promoted the senescence of attached leaves of oats ( Avena sativa L. cv. Victory)”
Claim · model-written summary
Rubbing promoted senescence of attached maize leaves.
- Material
- cv. Early Bellee0
- Organ / stage
- attached leavese0
- Treatment
- Rubbinge0
- Outcome
- senescencee0
- Direction
- promotede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rubbing promoted the senescence of attached leaves of oats ( Avena sativa L. cv. Victory), maize ( Zea mays L. cv. Early Belle)”
Claim · model-written summary
Rubbing promoted senescence of pumpkin cotyledons in the dark.
- Taxon
- pumpkine0
- Organ / stage
- cotyledonse0
- Treatment
- Rubbinge0
- Outcome
- senescencee0
- Direction
- promotede0
- Qualifier
- in the darke0
Not reportedComparator
Verbatim
e0“Rubbing promoted the senescence of attached leaves of oats ( Avena sativa L. cv. Victory), maize ( Zea mays L. cv. Early Belle) and pumpkin ( Cucurbita pepo L. cv. Jack‐o‐lantern) cotyledons in the dark”
Claim · model-written summary
Rubbing promoted senescence of oat leaf segments in light, to a lesser extent than in the dark.
- Taxon
- oatAvena sativae0
- Organ / stage
- leaf segmentse0
- Treatment
- Rubbinge0
- Outcome
- senescencee0
- Direction
- promotede0
- Qualifier
- although to a lesser extent compared to the effect in the darke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rubbing promoted the senescence of oat leaf segments even in light, although to a lesser extent compared to the effect in the dark”
Claim · model-written summary
Mechanical perturbation enhanced in situ senescence of pumpkin leaves.
Not reportedComparator
Verbatim
e0“The senescence of leaves of pumpkin and cocklebur ( Xanthium strumarium Wallr. var. Pennsylvanicum ) in situ was also enhanced by MP”
Claim · model-written summary
Mechanical perturbation enhanced in situ senescence of cocklebur leaves.
- Taxon
- cocklebur
Xanthium strumariume0 - Treatment
- MPe0
- Outcome
- senescence of leavese0
- Direction
- enhancede0
- Qualifier
- in situe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The senescence of leaves of pumpkin and cocklebur ( Xanthium strumarium Wallr. var. Pennsylvanicum ) in situ was also enhanced by MP”
The same questions in other papers
cycloheximide · quality: protein · Avena sativa (oats)Positive and negative results
1 in the opposite direction
- negative
kinetin · quality: postharvest · Avena sativa (oats)Results agree
3 papers in the same direction as this paper
- positive
- positive
- 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.