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. 2020 Sep 25:756:144921.
doi: 10.1016/j.gene.2020.144921. Epub 2020 Jun 25.

Cloning, functional characterization and expression analysis of LoTPS5 from Lilium 'Siberia'

Farhat Abbas  1 , Yanguo Ke  1 , Yiwei Zhou  1 , Muhammad Waseem  2 , Yunyi Yu  1 , Umair Ashraf  3 , Xinyue Li  1 , Chutian Wang  1 , Yuechong Yue  1 , Rangcai Yu  4 , Yanping Fan  5
Affiliations

Cloning, functional characterization and expression analysis of LoTPS5 from Lilium 'Siberia'

Farhat Abbas et al. Gene. .

Abstract

Lilium 'Siberia' is a perennial herbaceous plant that is commercially significant because of its snowy white floral color and appealing scent which is mainly due to the presence of monoterpenes and benzoids compounds in floral volatile profile. In the current study, LoTPS5 was cloned and functionally characterized. Results revealed that LoTPS5 specifically generates squalene from FPP, whereas no product was produced when it was incubated with GPP or GGPP. The subcellular localization experiment showed that LoTPS5 was located in plastids. Furthermore, LoTPS5 showed its high expression in the leaf followed by petals and sepals of the flower. Moreover, the expression of LoTPS5 gradually increased from the bud stage and peak at the full-bloom stage. Besides, LoTPS5 showed a diurnal circadian rhythmic pattern with a peak in the afternoon (16:00) followed by deep night (24:00) and morning (8:00), respectively. LoTPS5 is highly responsive to mechanical wounding by rapidly elevating its mRNA transcript level. The current study will provide significant information for future studies of terpenoid and squalene biosynthesis in Lilium 'Siberia'.

Keywords: Floral scent; Lilium oriental hybrid; Squalene; Terpene synthases.

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Conflict of interest statement

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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