A near-complete assembly of the Houttuynia cordata genome provides insights into the regulatory mechanism of flavonoid biosynthesis in Yuxingcao.

Autor:	Yang Z; Key Laboratory of State Forestry Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, School of Life Sciences, Guizhou Normal University, Guiyang, Guizhou 550025, China. Electronic address: zhengtingyang@gznu.edu.cn., He F; Key Laboratory of State Forestry Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, School of Life Sciences, Guizhou Normal University, Guiyang, Guizhou 550025, China., Mai Y; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong 510640, China., Fan S; Key Laboratory of State Forestry Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, School of Life Sciences, Guizhou Normal University, Guiyang, Guizhou 550025, China., An Y; Key Laboratory of State Forestry Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, School of Life Sciences, Guizhou Normal University, Guiyang, Guizhou 550025, China., Li K; Key Laboratory of State Forestry Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, School of Life Sciences, Guizhou Normal University, Guiyang, Guizhou 550025, China., Wu F; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong 510640, China., Tang M; Key Laboratory of State Forestry Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, School of Life Sciences, Guizhou Normal University, Guiyang, Guizhou 550025, China., Yu H; Key Laboratory of State Forestry Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, School of Life Sciences, Guizhou Normal University, Guiyang, Guizhou 550025, China., Liu JX; Lishui Innovation Center for Life and Health, Zhejiang University, Hangzhou 310027, China. Electronic address: jianxiangliu@zju.edu.cn., Xia R; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong 510640, China. Electronic address: rxia@scau.edu.cn.
Jazyk:	angličtina
Zdroj:	Plant communications [Plant Commun] 2024 Oct 14; Vol. 5 (10), pp. 101075. Date of Electronic Publication: 2024 Sep 02.
DOI:	10.1016/j.xplc.2024.101075
Abstrakt:	Houttuynia cordata, also known as Yuxingcao in Chinese, is a perennial herb in the Saururaceae family. It is highly regarded for its medicinal properties, particularly in treating respiratory infections and inflammatory conditions, as well as boosting the human immune system. However, a lack of genomic information has hindered research on the functional genomics and potential improvements of H. cordata. In this study, we present a near-complete assembly of H. cordata genome and investigate the biosynthetic pathway of flavonoids, specifically quercetin, using genomics, transcriptomics, and metabolomics analyses. The genome of H. cordata diverged from that of Saururus chinensis around 33.4 million years ago; it consists of 2.24 Gb with 76 chromosomes (4n = 76) and has undergone three whole-genome duplication (WGD) events. These WGDs played a crucial role in shaping the H. cordata genome and influencing the gene families associated with its medicinal properties. Through metabolomics and transcriptomics analyses, we identified key genes involved in the β-oxidation process for biosynthesis of houttuynin, one of the volatile oils responsible for the plant's fishy smell. In addition, using the reference genome, we identified genes involved in flavonoid biosynthesis, particularly quercetin metabolism, in H. cordata. This discovery has important implications for understanding the regulatory mechanisms that underlie production of active pharmaceutical ingredients in traditional Chinese medicine. Overall, the high-quality genome assembly of H. cordata serves as a valuable resource for future functional genomics research and provides a solid foundation for genetic improvement of H. cordata for the benefit of human health. (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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