The Flavonoid Biosynthetic Enzyme Chalcone Isomerase Modulates Terpenoid Production in Glandular Trichomes of Tomato
作者： Jin-Ho Kang , John McRoberts , Feng Shi , Javier E Moreno , A Daniel Jones
关键词: Naringenin 、 Flavonoid 、 Metabolic pathway 、 Solanum 、 Trichome 、 Chalcone isomerase 、 Biology 、 Naringenin chalcone 、 Biochemistry 、 Terpenoid
摘要: Flavonoids and terpenoids are derived from distinct metabolic pathways but nevertheless serve complementary roles in mediating plant interactions with the environment. Here, we show that glandular trichomes of anthocyanin free (af) mutant cultivated tomato (Solanum lycopersicum) fail to accumulate both flavonoids terpenoids. This pleiotropic deficiency was associated loss resistance native populations coleopteran herbivores under field conditions. We demonstrate Af encodes an isoform (SlCHI1) flavonoid biosynthetic enzyme chalcone isomerase (CHI), which catalyzes conversion naringenin is strictly required for production multiple tissues tomato. Expression wild-type SlCHI1 gene its promoter complemented af. Unexpectedly, transgene also defect terpenoid trichomes. Our results establish a key role reveal link between CHI1 production. Metabolic coordination may optimize function trichome glands dynamic environments.
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