Claim · model-written summary
IAA applied to the top of a seedling with the epicotyl removed inhibited the recovering effect of epicotyl removal on nucleic acid and protein contents.
- Taxon
- mung bean
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Vigna radiatae1 - Treatment
- IAAe7
- Outcome
- contents of nucleic acids and proteine7
- Direction
- decreaseinferrede7
- Qualifier
- the recovering effecte7
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e1“The decline of the contents of nu-cleic acids and protein in senescingcotyledons of mung bean (Plaseolus ra-diatus) was reverted to an increase, andhence the process of senescence was re-versed, when the epicotyl was removedbefore the point of no-return (betweenday 5 and day 6)”
e7“While the application of IAAon the top of a seedling ftom which theepicotyl had been removed could inhib-it the recovering effect of epicotyl re-moval on the contents of nucleic acidsand protein”
Title
Tan Bao 1993
Other claims from this paper (10)
- Intervention effect Removing the epicotyl before the point of no-return reversed the decline of nucleic acid and protein contents of senescing mung bean cotyledons to an increase.
- Intervention effect Removing the epicotyl after the point of no-return had no effect on reversing cotyledon senescence or on recovering the loss of nucleic acids and proteins.
- Observation After the point of no-return, mung bean cotyledons had lost all of their low molecular weight DNA.
- Observation After the point of no-return, mung bean cotyledons had a larger amount of nuclear main-band DNA, 25 S and 18 S rRNA.
- Observation After the point of no-return, mung bean cotyledons had lost most of their soluble proteins.
- Intervention effect Removing the epicotyl before the point of no-return gave a significant increase in the amount of all DNA and RNA components and almost all soluble proteins in cotyledons.
- Intervention effect 6-BA applied to cotyledons could retard the progress of cotyledon senescence but did not have the same effect as epicotyl removal.
- Mechanism Senescence of mung bean cotyledons appears related to hormone distribution, especially auxin.
- Mechanism Irreversibility of cotyledon senescence may be related to the loss of DNAs and RNAs.
- Mechanism Reversion of cotyledon senescence by epicotyl removal may be related to recovery of those components.