Abstract
Young leaves as explants,the tomato(Solanum lycopersicum L.)was transformed with antisense genomic DNA of phytochrome A,which mediated by Agrobacterium tumefacien.It was shown by PCR analysis and Sourthern blotting detection that the fragment of PHYA was integrated into the tomato genome.Several results were observed from transgenic tomato friuts including inhibition of expression of PHYA,siginificant decrease in biosynthesis of lycopene and the abnormal color of the fruit skin.There were no siginificant differenecs between transgenic fruits and the control groups in the production of ethylene.Therefore,we presumed that phytochrome existing in the downstram of ethylene,which along with PHYA,played a role in the regulation of biosynthesis of lycopene.However,more studies on how both of them regulate the biosynthesis of lycopene are needed.
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Claims 6
Claim · model-written summary
The PHYA fragment was integrated into the tomato genome.
- Taxon
- tomato
Solanum lycopersicume0 - Gene
- PHYAe0
- Outcome
- fragment of PHYA was integrated into the tomato genomee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the fragment of PHYA was integrated into the tomato genome”
Claim · model-written summary
PHYA expression was inhibited in transgenic tomato fruits.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- friutse0
- Treatment
- transgenic tomatoe0
- Gene
- PHYAe0
- Outcome
- expression of PHYAe0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Several results were observed from transgenic tomato friuts including inhibition of expression of PHYA”
Claim · model-written summary
Lycopene biosynthesis significantly decreased in transgenic tomato fruits.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- antisense transformationt1
- Outcome
- biosynthesis of lycopenee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“siginificant decrease in biosynthesis of lycopene”
t0“Regulation of biosynthesis of lycopene in tomato by antisense transformation with phytochrome a gene”
t1“Regulation of biosynthesis of lycopene in tomato by antisense transformation with phytochrome a gene”
Claim · model-written summary
Transgenic tomato fruit skin had abnormal color.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- fruit skine0
- Outcome
- abnormal color of the fruit skine0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the abnormal color of the fruit skin”
t0“tomato”
Claim · model-written summary
Fruit ethylene production did not significantly differ from controls.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- transgenic fruitse0
- Outcome
- production of ethylenee0
- Direction
- no siginificant differenecse0
- Comparator
- control groupse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no siginificant differenecs between transgenic fruits and the control groups in the production of ethylene”
t0“tomato”
Claim · model-written summary
The authors propose that phytochrome acts downstream of ethylene to regulate lycopene biosynthesis.
- Taxon
- tomatoSolanum lycopersicumt0
- Gene
- PHYAe0
- Outcome
- regulation of biosynthesis of lycopenee0
- Qualifier
- phytochrome existing in the downstram of ethylenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we presumed that phytochrome existing in the downstram of ethylene,which along with PHYA,played a role in the regulation of biosynthesis of lycopene”
t0“tomato”
The same questions in other papers
transgenic · physiology: hormones · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- no effect
- no effect
- no effect
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.