Abstract
Gibberellins (GAs) have been shown by others to be required for normal development of pea fruit. Whether the pericarp of the developing pea fruit produces GAs in situ is not known. To determine if the pericarp has the capacity to produce GAs during fruit growth, the metabolism of the first two committed GAs in the biosynthetic pathway, ({sup 14}C)GA{sub 12}-aldehyde and ({sup 14}C)GA{sub 12} was examined in tissue obtained from pollinated, parthenocarpic, and control fruit over 4 days from treatment. ({sup 14}C)GA{sub 12}-aldehyde was converted primarily to conjugates, including ({sup 14}C)GA{sub 12}-aldehyde conjugate. ({sup 14}C)GA{sub 12} was converted to ({sup 14}C)GA{sub 53} in all tissue, but by day 4 only tissue from pollinated or parthenocarpic fruits showed sustained formation of ({sup 14}C)GA{sub 53}. When ({sup 14}C)GA{sub 12} is applied to 4-day-old fruits attached to the plants, the major product obtained after 24 hours is ({sup 14}C)GA{sub 20} (as identified by GC-MS). No transport to the developing seed was observed. These results indicate that the elongating fruit tissue has the capacity to produce GAs.
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Claims 6
Claim · model-written summary
Pea fruit tissue converted labeled GA12-aldehyde mainly to conjugates.
- Taxon
- pea
Lathyrus oleraceust0 - Organ / stage
- fruitt0
- Outcome
- conjugatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“({sup 14}C)GA{sub 12}-aldehyde was converted primarily to conjugates, including ({sup 14}C)GA{sub 12}-aldehyde conjugate.”
t0“pea fruit”
Claim · model-written summary
Labeled GA12 was converted to labeled GA53 in all pea fruit tissue.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- ({sup 14}C)GA{sub 53}e0
- Qualifier
- all tissuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“({sup 14}C)GA{sub 12} was converted to ({sup 14}C)GA{sub 53} in all tissue”
t0“pea fruit”
Claim · model-written summary
By day 4, only pollinated or parthenocarpic fruit tissue sustained formation of labeled GA53.
- Taxon
- peaLathyrus oleraceust0
- Organ / stage
- pollinated or parthenocarpic fruitse0
- Outcome
- sustained formation of ({sup 14}C)GA{sub 53}e0
- Qualifier
- by day 4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“by day 4 only tissue from pollinated or parthenocarpic fruits showed sustained formation of ({sup 14}C)GA{sub 53}”
t0“pea fruit”
Claim · model-written summary
Labeled GA20 was the major product after labeled GA12 application to attached four-day-old pea fruits.
- Taxon
- peaLathyrus oleraceust0
- Organ / stage
- 4-day-old fruitse0
- Treatment
- ({sup 14}C)GA{sub 12}e0
- Outcome
- major producte0
- Qualifier
- after 24 hourse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When ({sup 14}C)GA{sub 12} is applied to 4-day-old fruits attached to the plants, the major product obtained after 24 hours is ({sup 14}C)GA{sub 20}”
t0“pea fruit”
Claim · model-written summary
No transport to the developing seed was observed.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- No transport to the developing seede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No transport to the developing seed was observed.”
t0“pea fruit”
Claim · model-written summary
Elongating pea fruit tissue has the capacity to produce gibberellins.
- Taxon
- peaLathyrus oleraceust0
- Organ / stage
- elongating fruit tissuee0
- Outcome
- produce GAse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the elongating fruit tissue has the capacity to produce GAs.”
t0“pea fruit”