Abstract
Gene silencing is one of the ways in which gene expression is controlled. The authors have developed a model system to study anthocyanin gene silencing using a recessive mutation in Petunia Juss. ( Star mutation) and the ability of certain viruses to reverse the gene silencing mutation. In healthy plants, the star pattern was enhanced (increase in level of gene silencing) under high temperature or light growing conditions. Virus infection did not significantly influence the star pattern when plants were grown under either low-light or low-temperature conditions. Under high-light and -temperature conditions, virus infection reverses silencing, leading to a change in the star pattern. These changes in the star pattern corresponded to changes in gene expression. Viral infection had a greater affect on regulatory gene ( Wd40, Myc , and Myb ) expression than on structural gene expression ( Chs and Ans ).
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Claims 5
Claim · model-written summary
High temperature or light enhanced the star pattern and gene silencing.
_flowers_in_Westgate_Gardens%2C_Canterbury.jpg?width=60){kind=small}
PetuniaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_flowers_in_Westgate_Gardens%2C_Canterbury.jpg?width=500)
Verbatim
e0“In healthy plants, the star pattern was enhanced (increase in level of gene silencing) under high temperature or light growing conditions.”
t0“Petunia ×hybrida Vilm”
Claim · model-written summary
Virus infection did not significantly influence the star pattern under low light or low temperature.
- Treatment
- Virus infectione0
- Outcome
- star patterne0
- Direction
- did not significantly influencee0
- Qualifier
- low-light or low-temperature conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Virus infection did not significantly influence the star pattern when plants were grown under either low-light or low-temperature conditions.”
t0“Petunia ×hybrida Vilm”
Claim · model-written summary
Virus infection reversed silencing and changed the star pattern under high light and temperature.
- Treatment
- virus infectione0
- Outcome
- silencinge0
- Direction
- reversese0
- Qualifier
- high-light and -temperature conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under high-light and -temperature conditions, virus infection reverses silencing, leading to a change in the star pattern.”
t0“Petunia ×hybrida Vilm”
Claim · model-written summary
Changes in star pattern corresponded with gene expression changes.
Not reportedGeneOrgan / stageDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These changes in the star pattern corresponded to changes in gene expression.”
t0“Petunia ×hybrida Vilm”
Claim · model-written summary
Viral infection affected regulatory gene expression more than structural gene expression.
- Treatment
- Viral infectione0
- Outcome
- regulatory gene ( Wd40, Myc , and Myb ) expressione0
- Direction
- greater affecte0
- Comparator
- structural gene expressione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Viral infection had a greater affect on regulatory gene ( Wd40, Myc , and Myb ) expression than on structural gene expression ( Chs and Ans ).”
t0“Petunia ×hybrida Vilm”