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פותח על ידי קלירמאש פתרונות בע"מ -
GA as a regulatory link between the showy floral traits color and scent
Year:
2017
Source of publication :
New Phytologist
Authors :
שפיצר-רימון, בן
;
.
Volume :
Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:
  • Emission of volatiles at advanced stages of flower development is a strategy used by plants to lure pollinators to the flower. We reveal that GA negatively regulates floral scent production in petunia.
  • We used Agrobacterium‐mediated transient expression of GA‐20ox in petunia flowers and a virus‐induced gene silencing approach to knock down DELLA expression, measured volatile emission, internal pool sizes and GA levels by GC‐MS or LC–MS/MS, and analyzed transcript levels of scent‐related phenylpropanoid‐pathway genes.
  • We show that GA has a negative effect on the concentrations of accumulated and emitted phenylpropanoid volatiles in petunia flowers; this effect is exerted through transcriptional/post‐transcriptional downregulation of regulatory and biosynthetic scent‐related genes. Both overexpression of GA20‐ox, a GA‐biosynthesis gene, and suppression of DELLA, a repressor of GA‐signal transduction, corroborated GA's negative regulation of floral scent.
  • We present a model in which GA‐dependent timing of the sequential activation of different branches of the phenylpropanoid pathway during flower development may represent a link between the showy traits controlling pollinator attraction, namely color and scent.
Note:
Related Files :
color
emission
floral scent
GA
Regulatory functions
עוד תגיות
תוכן קשור
More details
DOI :
https://doi.org/10.1111/nph.14504
Article number:
0
Affiliations:
Database:
גוגל סקולר
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
40190
Last updated date:
02/03/2022 17:27
Creation date:
30/04/2019 12:56
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Scientific Publication
GA as a regulatory link between the showy floral traits color and scent

Jasmin Ravid , Yumiko Takebayashi, Mitsunori Seo, Alon Cna'ani, Javiera Aravena‐Calvo , Tania Masci , Moran Farhi , Alexander Vainstein

GA as a regulatory link between the showy floral traits color and scent .
  • Emission of volatiles at advanced stages of flower development is a strategy used by plants to lure pollinators to the flower. We reveal that GA negatively regulates floral scent production in petunia.
  • We used Agrobacterium‐mediated transient expression of GA‐20ox in petunia flowers and a virus‐induced gene silencing approach to knock down DELLA expression, measured volatile emission, internal pool sizes and GA levels by GC‐MS or LC–MS/MS, and analyzed transcript levels of scent‐related phenylpropanoid‐pathway genes.
  • We show that GA has a negative effect on the concentrations of accumulated and emitted phenylpropanoid volatiles in petunia flowers; this effect is exerted through transcriptional/post‐transcriptional downregulation of regulatory and biosynthetic scent‐related genes. Both overexpression of GA20‐ox, a GA‐biosynthesis gene, and suppression of DELLA, a repressor of GA‐signal transduction, corroborated GA's negative regulation of floral scent.
  • We present a model in which GA‐dependent timing of the sequential activation of different branches of the phenylpropanoid pathway during flower development may represent a link between the showy traits controlling pollinator attraction, namely color and scent.
Scientific Publication
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