Specific Flavonoids and Their Biosynthetic Pathway in Scutellaria baicalensis

Scutellaria baicalensis, is one of the most traditional medicinal plants in the Lamiaceae family, and has been widely used to treat liver and lung complaints and as a complementary cancer treatment in traditional Chinese medicine. The preparation from its roots, called “Huang Qin,” is rich in specia...

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Main Authors: Tianlin Pei, Mengxiao Yan, Yanbo Huang, Yukun Wei, Cathie Martin, Qing Zhao
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-03-01
Series:Frontiers in Plant Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fpls.2022.866282/full
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author Tianlin Pei
Tianlin Pei
Mengxiao Yan
Yanbo Huang
Yukun Wei
Cathie Martin
Qing Zhao
Qing Zhao
author_facet Tianlin Pei
Tianlin Pei
Mengxiao Yan
Yanbo Huang
Yukun Wei
Cathie Martin
Qing Zhao
Qing Zhao
author_sort Tianlin Pei
collection DOAJ
description Scutellaria baicalensis, is one of the most traditional medicinal plants in the Lamiaceae family, and has been widely used to treat liver and lung complaints and as a complementary cancer treatment in traditional Chinese medicine. The preparation from its roots, called “Huang Qin,” is rich in specialized flavones such as baicalein, wogonin, and their glycosides which lack a 4′-hydroxyl group on the B ring (4′-deoxyflavones), with anti-tumor, antioxidant, and antiviral activities. Baicalein has recently been reported to inhibit the replication of the COVID-19 virus. These 4′-deoxyflavones are found only in the order Lamiales and were discovered in the genus Scutellaria, suggesting that a new metabolic pathway synthesizing 4′-deoxyflavones evolved recently in this genus. In this review, we focus on the class of 4′-deoxyflavones in S. baicalensis and their pharmacological properties. We also describe the apparent evolutionary route taken by the genes encoding enzymes involved in the novel, root-specific, biosynthetic pathway for baicalein and wogonin, which provides insights into the evolution of specific flavone biosynthetic pathways in the mint family.
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spelling doaj.art-f1c88a03d5eb4cc381c41c9caefd02f72022-12-22T01:40:24ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-03-011310.3389/fpls.2022.866282866282Specific Flavonoids and Their Biosynthetic Pathway in Scutellaria baicalensisTianlin Pei0Tianlin Pei1Mengxiao Yan2Yanbo Huang3Yukun Wei4Cathie Martin5Qing Zhao6Qing Zhao7Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, ChinaNational Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, ChinaShanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, ChinaShanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, ChinaShanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, ChinaJohn Innes Centre, Norwich, United KingdomShanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, ChinaNational Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, ChinaScutellaria baicalensis, is one of the most traditional medicinal plants in the Lamiaceae family, and has been widely used to treat liver and lung complaints and as a complementary cancer treatment in traditional Chinese medicine. The preparation from its roots, called “Huang Qin,” is rich in specialized flavones such as baicalein, wogonin, and their glycosides which lack a 4′-hydroxyl group on the B ring (4′-deoxyflavones), with anti-tumor, antioxidant, and antiviral activities. Baicalein has recently been reported to inhibit the replication of the COVID-19 virus. These 4′-deoxyflavones are found only in the order Lamiales and were discovered in the genus Scutellaria, suggesting that a new metabolic pathway synthesizing 4′-deoxyflavones evolved recently in this genus. In this review, we focus on the class of 4′-deoxyflavones in S. baicalensis and their pharmacological properties. We also describe the apparent evolutionary route taken by the genes encoding enzymes involved in the novel, root-specific, biosynthetic pathway for baicalein and wogonin, which provides insights into the evolution of specific flavone biosynthetic pathways in the mint family.https://www.frontiersin.org/articles/10.3389/fpls.2022.866282/fullScutellaria baicalensis4′-deoxyflavonesflavonoidsbiosynthetic pathwaysevolutionary mechanisms
spellingShingle Tianlin Pei
Tianlin Pei
Mengxiao Yan
Yanbo Huang
Yukun Wei
Cathie Martin
Qing Zhao
Qing Zhao
Specific Flavonoids and Their Biosynthetic Pathway in Scutellaria baicalensis
Frontiers in Plant Science
Scutellaria baicalensis
4′-deoxyflavones
flavonoids
biosynthetic pathways
evolutionary mechanisms
title Specific Flavonoids and Their Biosynthetic Pathway in Scutellaria baicalensis
title_full Specific Flavonoids and Their Biosynthetic Pathway in Scutellaria baicalensis
title_fullStr Specific Flavonoids and Their Biosynthetic Pathway in Scutellaria baicalensis
title_full_unstemmed Specific Flavonoids and Their Biosynthetic Pathway in Scutellaria baicalensis
title_short Specific Flavonoids and Their Biosynthetic Pathway in Scutellaria baicalensis
title_sort specific flavonoids and their biosynthetic pathway in scutellaria baicalensis
topic Scutellaria baicalensis
4′-deoxyflavones
flavonoids
biosynthetic pathways
evolutionary mechanisms
url https://www.frontiersin.org/articles/10.3389/fpls.2022.866282/full
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