Paraglomus and Glomus arbuscular mycorrhizal fungi induce the green tea catechin quality index and phosphorus bioavailability in tropical soils.

IF 3.8 2区 生物学 Q2 MYCOLOGY
Pei Yuan, Yingzi Wang, Jianwei Peng, Ya Chen, Jinjing Li, Mamdouh A Eissa, Gongwen Luo, Chang Tian
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Abstract

The quality of green tea is influenced by soil microbes in addition to soil conditions and the Camellia sinensis cultivar. Arbuscular mycorrhizal (AM) fungi can significantly improve soil quality and crop productivity; however, the specific AM fungal groups that affect the catechin quality index (CQI) of green tea are not yet clear. In the present study, rhizosphere soil samples, root samples, and fresh tea leaves from six different Camellia sinensis cultivars in Hunan Province, China, were collected. The taxonomic diversity and community composition of AM fungi in the rhizosphere soil and roots were investigated using high-throughput Illumina amplicon sequencing technology, and the mycorrhizal colonization rate was assessed. The two main AM fungal genera in the Camellia sinensis roots and rhizosphere were Paraglomus and Glomus. A higher catechin quality index (HCQI) is correlated with greater accumulation of Paraglomus in the roots of Camellia sinensis. The tea cultivar and the available phosphorus content in the rhizosphere soil significantly affected the mycorrhizal colonization rate and the composition of the AM fungal community within the roots. The mycorrhizal colonization rate affected the catechin composition, consequently influencing the CQI of green tea. Furthermore, fluctuations in the proportional presence of Paraglomus and Glomus within the roots of Camellia sinensis notably affected the CQI. In summary, increased mycorrhizal colonization and increased prevalence of Paraglomus substantially increase the CQI of green tea. These findings have significant implications for the application of AM fungi in the production of high-quality green tea.

竹节菌和丛枝菌根真菌诱导热带土壤中绿茶儿茶素质量指数和磷的生物有效性。
绿茶品质除了受土壤条件和茶树品种的影响外,还受土壤微生物的影响。丛枝菌根真菌(AM)能显著改善土壤质量和作物生产力;然而,影响绿茶儿茶素质量指数(CQI)的AM真菌具体类群尚不清楚。本研究收集了湖南省6个不同茶树品种的根际土壤样品、根系样品和鲜叶样品。采用高通量Illumina扩增子测序技术研究了AM真菌在根际土壤和根系中的分类多样性和群落组成,并评估了菌根定植率。茶树根际和根际的AM真菌属主要为Paraglomus和Glomus。儿茶素质量指数(HCQI)越高,山茶根中伞虫积累越多。茶叶品种和根际土壤有效磷含量对根内菌根定植率和AM真菌群落组成有显著影响。菌根定殖率影响儿茶素组成,从而影响绿茶的CQI。此外,山茶根内Paraglomus和Glomus比例的波动显著影响CQI。综上所述,增加菌根定植和增加伞菌的流行显著增加了绿茶的CQI。这些发现对AM真菌在优质绿茶生产中的应用具有重要意义。
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来源期刊
Mycorrhiza
Mycorrhiza 生物-真菌学
CiteScore
8.20
自引率
2.60%
发文量
40
审稿时长
6-12 weeks
期刊介绍: Mycorrhiza is an international journal devoted to research into mycorrhizas - the widest symbioses in nature, involving plants and a range of soil fungi world-wide. The scope of Mycorrhiza covers all aspects of research into mycorrhizas, including molecular biology of the plants and fungi, fungal systematics, development and structure of mycorrhizas, and effects on plant physiology, productivity, reproduction and disease resistance. The scope also includes interactions between mycorrhizal fungi and other soil organisms and effects of mycorrhizas on plant biodiversity and ecosystem structure. Mycorrhiza contains original papers, short notes and review articles, along with commentaries and news items. It forms a platform for new concepts and discussions, and is a basis for a truly international forum of mycorrhizologists from all over the world.
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