Journal
3 BIOTECH
Volume 8, Issue 9, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13205-018-1408-7
Keywords
Anthocyanin; Flower stage; Gerbera; Gene expression; Temperature
Categories
Funding
- Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries (IPET) through the Agri-Bio Industry Technology Development Program
- Ministry of Agriculture, Food and Rural Affairs (MAFRA) [315002-5]
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We investigated the expression of anthocyanin structural genes and transcription factors (TFs) associated with varying anthocyanin content during different developmental stages (S1-S4) of the gerbera cultivars Nathasha' and 'Rosalin'. Accumulation of anthocyanin started at S1 and reached a maximum at S3 in both cultivars. Enhancement of anthocyanin content in Nathasha' was associated with upregulation of ANS and MYB10, whereas in 'Rosalin', upregulation was associated with CHS1, MYB10, and MYC1 . Low-temperature exposure (6 degrees C) enhanced anthocyanin content to a greater extent than that at 22 degrees C via stronger upregulation of CHS1 and MYB10 in Nathasha' and CHS1 in 'Rosalin', irrespective of flower developmental stage. However, differences in anthocyanin content between the two cultivars were found to be influenced by the expression levels of all structural genes and TFs, irrespective of flower developmental stage and temperature conditions. We suggest that differences in the regulation mechanisms of anthocyanin biosynthesis and coloration pattern between Nathasha' and 'Rosalin' are related to differences in the expression patterns of structural genes and TFs; however, further functional studies of the key genes in anthocyanin biosynthesis are needed.
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