Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 541007
Title The ROSEA1 and DELILA transcription factors control anthocyanin biosynthesis in Nicotiana benthamiana and Lilium flowers
Author(s) Fatihah, Hasan N.N.; Moñino López, Daniel; Arkel, Gert van; Schaart, Jan G.; Visser, Richard G.F.; Krens, Frans A.
Source Scientia Horticulturae 243 (2019). - ISSN 0304-4238 - p. 327 - 337.
Department(s) Plant Breeding
PBR Breeding for Resistance in Solanaceae
PBR Ornamentals, tissue culture and gene transfer
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Anthocyanin - Flower specific promoter - Lilium spp. - N. benthamiana - Transcription factors

The activity of anthocyanin biosynthesis genes is regulated at the transcriptional level, thus manipulation of transcription factors (TFs) is an ideal strategy to alter the expression of multiple target genes. In this study, we investigated the effect of introducing ROSEA1 (ROS1, a MYB-type) and DELILA (DEL, a bHLH-type) TFs from snapdragon under control of a flower specific promoter, Floral Binding Protein 1 (FBP1) from petunia into Nicotiana benthamiana flowers and Lilium tepals. The usefulness of the FBP1 promoter was demonstrated by the generation of purplish flowers in otherwise normal-growing plants of N. benthamiana, while the expression by the 35S promoter led to the development of stunted plants with anthocyanins in all parts. N. benthamiana was successfully transformed by ROS1 alone and by a combination of ROS1 + DEL. The observed accumulation of delphinidin corresponded to the expression of NbCHS, NbF3H, NbDFR and NbANS. The effect of ROS1 + DEL on Lilium flower colour was investigated using agroinfiltration. A higher cyanidin accumulation was observed in tepals of the Oriental hybrid lily cv. ‘Perth’ resulting in deeper pink colouration at the infiltrated area. Nevertheless, the introduction of ROS1 + DEL did not produce any phenotypic changes to the white-flowered L. longiflorum cv. ‘Lincoln’ and the white Oriental hybrid lily cv. ‘Rialto’ due to other deficiencies in their anthocyanin biosynthetic pathway. Co-expression of ROS1 + DEL under control of the FBP1 promoter together with active structural anthocyanin biosynthetic genes can result in modification of Lilium flower colour.

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