Abstract
In etiolated, 5-day-old pea (Pisum sativum L.) seedlings a significantly more intensive growth of buds situated in the axil of the excised cotyledons was observed as early as 4 hours after decapitation and excision of one cotyledon of each pair. If [8-(14)C]benzyladenine ([(14)C]BA) was applied to roots of intact plants 10 hours prior to such decapitation and excision, significantly higher both total and specific (14)C activities were observed in buds situated on the side of the excised cotyledons as early as 4 hours after decapitation and excision. Although the removal of a substantial part of the root system carried out simultaneously with decapitation and excision of one cotyledon resulted in a decrease in total (14)C activity of buds, nevertheless a higher accumulation of (14)C activity was maintained in buds situated on the side of excised cotyledon. If [(14)C]BA was applied to roots of seedlings after they were decapitated and deprived of one cotyledon, both total and specific (14)C activities of buds situated on the side of excised cotyledons were significantly higher as early as the end of uptake of [(14)C]BA by roots, i.e. after 10 hours. On the other hand, [1,2-(3)H]gibberellin A(1) applied to roots of intact and/or decapitated and one-cotyledon-deprived seedlings in the same way as [(14)C]BA did not appear in the buds until very much later and only in negligible amounts (i.e.(3)H activity). This indicates that the release of buds from apical dominance represents an active and selective process which can result from the ability of buds to utilize and/or synthesize only certain growth substances within a certain time interval.
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Claims 7
Claim · model-written summary
Pea seedlings showed significantly more intensive growth of buds situated in the axil of the excised cotyledons.
- Taxon
- Pea
Lathyrus oleraceust0 - Outcome
- buds situated in the axil of the excised cotyledonse0
- Direction
- significantly more intensive growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In etiolated, 5-day-old pea (Pisum sativum L.) seedlings a significantly more intensive growth of buds situated in the axil of the excised cotyledons was observed as early as 4 hours after decapitation and excision of one cotyledon of each pair.”
t0“Pea (Pisum sativum L.)”
Claim · model-written summary
Pea seedlings showed significantly higher of both total and specific (14)C activities.
- Taxon
- PeaLathyrus oleraceust0
- Outcome
- both total and specific (14)C activitiese0
- Direction
- significantly highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly higher both total and specific (14)C activities were observed in buds situated on the side of the excised cotyledons as early as 4 hours after decapitation and excision”
t0“Pea (Pisum sativum L.)”
Claim · model-written summary
Pea seedlings showed a decrease of total (14)C activity of buds.
- Taxon
- PeaLathyrus oleraceust0
- Outcome
- total (14)C activity of budse0
- Direction
- a decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulted in a decrease in total (14)C activity of buds”
t0“Pea (Pisum sativum L.)”
Claim · model-written summary
Pea seedlings showed higher accumulation of (14)C activity.
- Taxon
- PeaLathyrus oleraceust0
- Outcome
- (14)C activitye0
- Direction
- higher accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a higher accumulation of (14)C activity was maintained in buds situated on the side of excised cotyledon”
t0“Pea (Pisum sativum L.)”
Claim · model-written summary
Pea seedlings showed significantly higher of both total and specific (14)C activities.
- Taxon
- PeaLathyrus oleraceust0
- Outcome
- both total and specific (14)C activitiese0
- Direction
- significantly highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both total and specific (14)C activities of buds situated on the side of excised cotyledons were significantly higher as early as the end of uptake of [(14)C]BA by roots, i.e. after 10 hours”
t0“Pea (Pisum sativum L.)”
Claim · model-written summary
Pea seedlings showed only in negligible amounts of [1,2-(3)H]gibberellin A(1).
- Taxon
- PeaLathyrus oleraceust0
- Outcome
- [1,2-(3)H]gibberellin A(1)e0
- Direction
- only in negligible amountse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“[1,2-(3)H]gibberellin A(1) applied to roots of intact and/or decapitated and one-cotyledon-deprived seedlings in the same way as [(14)C]BA did not appear in the buds until very much later and only in negligible amounts”
t0“Pea (Pisum sativum L.)”
Claim · model-written summary
Bud release from apical dominance may involve selective use or synthesis of growth substances.
- Taxon
- PeaLathyrus oleraceust0
- Outcome
- release of buds from apical dominancee0
- Qualifier
- ability of buds to utilize and/or synthesize only certain growth substancese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the release of buds from apical dominance represents an active and selective process which can result from the ability of buds to utilize and/or synthesize only certain growth substances within a certain time interval”
t0“Pea (Pisum sativum L.)”