The Petunia CHANEL Gene is a ZEITLUPE Ortholog Coordinating Growth and Scent Profiles
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AuthorTerry López, Marta Isabel; Pérez Sanz, Fernando; Díaz Galián, María Victoria; Pérez de los Cobos Arnao, Felipe; Navarro, Pedro J.; [et al.]
Knowledge AreaBotánicaProducción Vegetal
SponsorsThis research was funded by Fundacion Seneca 19398/PI/14, 19895/GERM/15 and MC BFU-2017 88300-C2-1-R and BFU-2017 88300-C2-2-R. We would like to acknowledge María José Roca for technical assistance.
Realizado en/conUniversidad Politécnica de Cartagena; Universidad de Murcia
Bibliographic CitationTerry MI, Pérez-Sanz F, Díaz-Galián MV, Pérez de los Cobos F, Navarro PJ, Egea-Cortines M, Weiss J. The Petunia CHANEL Gene is a ZEITLUPE Ortholog Coordinating Growth and Scent Profiles. Cells. 2019; 8(4):343. https://doi.org/10.3390/cells8040343
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 CHANEL (PhCHL), the ZEITLUPE ortholog in petunia (PhCHL) by hairpin RNAs. Plants with low PhCHL mRNA had overall decreased size. Growth evaluation using time lapse image analysis showed that early leaf movement was not affected by RNAi:PhCHL, 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 PhCHL. In contrast, petal growth displayed lower growth rate in RNAi:PhCHL. Decreased levels of PhCHL 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 PhCHL in controlling growth and development ...
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