Structure and Function of Rhizosphere Soil and Root Endophytic Microbial Communities Associated With Root Rot of Panax notoginseng.
Structure and Function of Rhizosphere Soil and Root Endophytic Microbial Communities Associated With Root Rot of Panax notoginseng.
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DOI：
10.3389/fpls.2021.752683
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发表时间：
2021
影响因子：
5.6
通讯作者：
Liu Y
中科院分区：
文献类型：
--
作者：
Wang P;Yang L;Sun J;Yang Y;Qu Y;Wang C;Liu D;Huang L;Cui X;Liu Y
三七 (Panax notoginseng (Burk.) F. H. Chen) 是五加科中药植物，在亚洲用于治疗心脑血管疾病。三七易发生根腐病，导致三七产量下降。在本研究中，我们利用高通量测序分析了不同地理位置的三七根际土壤和根内生真菌微生物群落。我们的结果表明，三七根际土壤微生物群落比根内生菌群落更加多样化。红假单胞菌属、游动放线菌属、伯克霍尔德氏菌属、奇噬菌属等可以帮助三七抵御根腐病的侵袭。 Ilyonectria mors-panacis、荧光假单胞菌和番茄假核毛菌是三七的病原菌。上调土壤中氨基酸运输和代谢，有利于抵抗病原菌，提高三七的抗逆性。 ABC转运蛋白和基因调节抗性基因可以提高三七的抗病性，GT（糖基转移酶）和GH（糖苷水解酶）家族数量的增加可能是三七根腐病的分子表现。此外，还获得了两种黄杆菌科物种和一种拟杆菌属物种的完整基因组。本研究展示了三七根际和根部微生物群落的微生物和功能多样性，为更好地了解三七根腐病微生物群落提供了有用的信息。我们的研究结果为三七根腐病和其他植物根际微生物群落的分子机制提供了见解。
Panax notoginseng (Burk.) F. H. Chen is a Chinese medicinal plant of the Araliaceae family used for the treatment of cardiovascular and cerebrovascular diseases in Asia. P. notoginseng is vulnerable to root rot disease, which reduces the yield of P. notoginseng. In this study, we analyzed the rhizosphere soil and root endophyte microbial communities of P. notoginseng from different geographical locations using high-throughput sequencing. Our results revealed that the P. notoginseng rhizosphere soil microbial community was more diverse than the root endophyte community. Rhodopseudomonas, Actinoplanes, Burkholderia, and Variovorax paradoxus can help P. notoginseng resist the invasion of root rot disease. Ilyonectria mors-panacis, Pseudomonas fluorescens, and Pseudopyrenochaeta lycopersici are pathogenic bacteria of P. notoginseng. The upregulation of amino acid transport and metabolism in the soil would help to resist pathogens and improve the resistance of P. notoginseng. The ABC transporter and gene modulating resistance genes can improve the disease resistance of P. notoginseng, and the increase in the number of GTs (glycosyltransferases) and GHs (glycoside hydrolases) families may be a molecular manifestation of P. notoginseng root rot. In addition, the complete genomes of two Flavobacteriaceae species and one Bacteroides species were obtained. This study demonstrated the microbial and functional diversity in the rhizosphere and root microbial community of P. notoginseng and provided useful information for a better understanding of the microbial community in P. notoginseng root rot. Our results provide insights into the molecular mechanism underlying P. notoginseng root rot and other plant rhizosphere microbial communities.
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