The Petunia CHANEL Gene is a ZEITLUPE Ortholog Coordinating Growth and Scent Profiles

The floral perianth, comprising sepals and petals, conceals the sexual organs and attracts pollinators. The coordination of growth and scent emission is not fully understood. We have analyzed the effect of knocking down ( ), the ortholog in petunia ( ) by hairpin RNAs. Plants with low mRNA had overa...

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Bibliographic Details
Published in:Cells (Basel, Switzerland) Switzerland), 2019-04, Vol.8 (4), p.343
Main Authors: Terry, Marta I, Pérez-Sanz, Fernando, Díaz-Galián, M Victoria, Pérez de Los Cobos, Felipe, Navarro, Pedro J, Egea-Cortines, Marcos, Weiss, Julia
Format: Article
Language:English
Subjects:
Animal reproduction
Cell division
circadian clock
Circadian rhythm
floral scent
Flowers & plants
Flowers - growth & development
Gene expression
Gene Expression Regulation, Plant
Genomes
Growth rate
hairpin RNA
image analysis
Image processing
mRNA
Odorants - analysis
Period Circadian Proteins - genetics
Period Circadian Proteins - physiology
petal development
Petunia - genetics
Petunia - growth & development
phenomics
Phylogenetics
Pollinators
Proteins
Reproductive organs
RNA-mediated interference
Sepals
Statistical analysis
ZEITLUPE
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Summary:The floral perianth, comprising sepals and petals, conceals the sexual organs and attracts pollinators. The coordination of growth and scent emission is not fully understood. We have analyzed the effect of knocking down ( ), the ortholog in petunia ( ) by hairpin RNAs. Plants with low mRNA had overall decreased size. Growth evaluation using time lapse image analysis showed that early leaf movement was not affected by , but flower angle movement was modified, moving earlier during the day in knockdown plants than in wild types. Despite differences in stem length, growth rate was not significantly affected by loss of . In contrast, petal growth displayed lower growth rate in . Decreased levels of caused strongly modified scent profiles, including changes in composition and timing of emission resulting in volatile profiles highly divergent from the wild type. Our results show a role of in controlling growth and development of vegetative and reproductive organs in petunia. The different effects of on organ development indicate an organ-specific interpretation of the down regulation of . Through the control of both timing and quantitative volatile emissions, appears to be a major coordinator of scent profiles.
ISSN:2073-4409
2073-4409
DOI:10.3390/cells8040343