Soil conditions and the plant microbiome boost the accumulation of monoterpenes in the fruit of Citrus reticulata ‘Chachi’

作者：Jianmu Su, Yayu Wang, Mei Bai, Tianhua Peng, Huisi Li, Huijuan Xu, Guifang Guo, Haiyi Bai, Ning Rong, Sunil Kumar Sahu, Hanjun He, Xiangxiu Liang, Canzhi Jin, Wei Liu, Mikael Lenz Strube, Lone Gram, Yongtao Li, Ertao Wang, Huan Liu, Hong Wu · 发表于：Microbiome · 年份：2023 · DOI：10.1186/s40168-023-01504-2 · 被引用次数：145 · 研究领域：Plant biochemistry and biosynthesis、Plant-Microbe Interactions and Immunity、Microbial Natural Products and Biosynthesis

BACKGROUND: The medicinal material quality of Citrus reticulata 'Chachi' differs depending on the bioactive components influenced by the planting area. Environmental factors, such as soil nutrients, the plant-associated microbiome and climatic conditions, play important roles in the accumulation of bioactive components in citrus. However, how these environmental factors mediate the production of bioactive components of medicinal plants remains understudied. RESULTS: Here, a multi-omics approach was used to clarify the role of environmental factors such as soil nutrients and the root-associated microbiome on the accumulation of monoterpenes in the peel of C. reticulata 'Chachi' procured from core (geo-authentic product region) and non-core (non-geo-authentic product region) geographical regions. The soil environment (high salinity, Mg, Mn and K) enhanced the monoterpene content by promoting the expression of salt stress-responsive genes and terpene backbone synthase in the host plants from the core region. The microbial effects on the monoterpene accumulation of citrus from the core region were further verified by synthetic community (SynCom) experiments. Rhizosphere microorganisms activated terpene synthesis and promoted monoterpene accumulation through interactions with the host immune system. Endophyte microorganisms derived from soil with the potential for terpene synthesis might enhance monoterpene accumulation in citrus by providing precursors of monoterpenes. CONCLUSION...