נגישות
menu      
Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Leaf-mediated light responses in petunia flowers
Year:
1996
Source of publication :
Plant physiology (source)
Authors :
Beno-Moualem, Delila
;
.
Volume :
110
Co-Authors:
Moscovici, S., Kennedy-Leigh Ctr. for Hort. Res., Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Moalem-Beno, D., Kennedy-Leigh Ctr. for Hort. Res., Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Weiss, D., Kennedy-Leigh Ctr. for Hort. Res., Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Facilitators :
From page:
1275
To page:
1282
(
Total pages:
8
)
Abstract:
In the present work we studied the role of light in the regulation of flavonoid gene expression and anthocyanin synthesis in petunia (Petunia hybrida) corollas. We found that light is required for chalcone synthase gene (chs) expression, anthocyanin synthesis, and growth of detached and attached petunia corollas. Although direct illumination induced chs expression, pigmentation, and elongation of the detached corollas, irradiation of green leaves or sepals played the main role in the attached corollas. The duration, intensity, and spectrum of the light reaction suggest that phytochrome-mediated high-irradiance reactions are involved in the regulation of corolla development. Using the photosynthesis inhibitor 3-(3,4-dichlorophenyl)-1,1-dimethylurea, we showed that photosynthesis does not significantly contribute to the leaf-mediated light responses. When sepals were removed or covered, [14C]sucrose uptake by the corolla of detached intact flowers was inhibited. The results of this study suggest that light is perceived by leaves and sepals and enhances corolla sink activity, elongation, pigmentation, and chs expression. The role of leaves and sepals in the light regulation of petunia corolla development is discussed.
Note:
Related Files :
Show More
Related Content
More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31269
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:01
Scientific Publication
Leaf-mediated light responses in petunia flowers
110
Moscovici, S., Kennedy-Leigh Ctr. for Hort. Res., Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Moalem-Beno, D., Kennedy-Leigh Ctr. for Hort. Res., Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Weiss, D., Kennedy-Leigh Ctr. for Hort. Res., Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Leaf-mediated light responses in petunia flowers
In the present work we studied the role of light in the regulation of flavonoid gene expression and anthocyanin synthesis in petunia (Petunia hybrida) corollas. We found that light is required for chalcone synthase gene (chs) expression, anthocyanin synthesis, and growth of detached and attached petunia corollas. Although direct illumination induced chs expression, pigmentation, and elongation of the detached corollas, irradiation of green leaves or sepals played the main role in the attached corollas. The duration, intensity, and spectrum of the light reaction suggest that phytochrome-mediated high-irradiance reactions are involved in the regulation of corolla development. Using the photosynthesis inhibitor 3-(3,4-dichlorophenyl)-1,1-dimethylurea, we showed that photosynthesis does not significantly contribute to the leaf-mediated light responses. When sepals were removed or covered, [14C]sucrose uptake by the corolla of detached intact flowers was inhibited. The results of this study suggest that light is perceived by leaves and sepals and enhances corolla sink activity, elongation, pigmentation, and chs expression. The role of leaves and sepals in the light regulation of petunia corolla development is discussed.
Scientific Publication
You may also be interested in