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Functional characterization of LcTPS1 and LcTPS14 explains the biosynthesis of citronellol, citronellal and linalool in Lagerstroemia caudata
Industrial Crops and Products ( IF 5.6 ) Pub Date : 2024-01-16 , DOI: 10.1016/j.indcrop.2024.118033 Yan XU , Han ZHANG , Yijing WU , Wan XU , Ming CAI , Huitang PAN , Qixiang ZHANG
Industrial Crops and Products ( IF 5.6 ) Pub Date : 2024-01-16 , DOI: 10.1016/j.indcrop.2024.118033 Yan XU , Han ZHANG , Yijing WU , Wan XU , Ming CAI , Huitang PAN , Qixiang ZHANG
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, a native species in China with a remarkable floral aroma, had been demonstrated the monoterpenoids as the main fragrant volatiles and integrated into crape myrtle breeding programs to enhance the aesthetic qualities. Terpene synthases (TPSs) were critical enzymes in terpenoids biosynthesis, which had not been isolated and reported in genus. Nine genes were scrutinized from transcriptome data of flowers, two of which, and , were found gene expression mode aligned with the release pattern of floral scents, with subcellular localization showing was expressed in plastids, while in cytoplasm. Heterologous expression in revealed that LcTPS14 employed either geranyl pyrophosphate (GPP) or farnesyl pyrophosphate (FPP) to generate linalool or E-nerolidol. Over-expressing or in Arabidopsis increased the volatile terpenoids in flowers. Moreover, after virus-induced gene silencing (VIGS), the quantities of citronellal and citronellol dropped drastically in TRV - samples, and TRV - plants exhibited diminished linalool compared to controls. Our findings suggested and were pivotal in monoterpene production and had potentials in further molecular modulation of crape myrtle floral scents.
更新日期：2024-01-16
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