Abstract
Purpose
Different species within a multi-ecosystem can enhance their growth, nutrient absorption, and accumulation of secondary metabolites. Atractylodes lancea (A. lancea) and maize intercropping enhance A. lancea yield and secondary metabolite content.Few study have, however, exploration the rhizosphere interaction of A. lancea and maize intercropping.
Methods
In this study, we conducted pot experiments, A. lancea monoculture (A), A. lancea and maize intercropping without a root barrier (AI), with an impermeable plastic root barrier (AP), or with a permeable nylon root barrier (AN). Soil samples were collection from A. lancea roots for volatile organic compounds (VOCs) detection to explore the relationship between VOCs and intercropping between A. lancea and maize.
Results
Intercropping resulting in increased rhizome yield and atractylon content in A. lancea. This can be attributed to changes in the composition of VOCs in the A. lancea roots. The rhizosphere of A. lancea altered VOCs composition after intercropping with maizie, and these altered VOCs were significantly positive correlations with atractylon content and A. lancea biomass. Notably, 2,6,10-trimethyltetradecane and ethyl isocholate were identified as shared VOCs in the rhizosphere of A. lancea and maize. These VOCs likely play a role in the increased biomass and atractylon content of A. lancea, serving as potential communication substances between A. lancea and maize.
Conclusion
Our study provides evidence that identified from rhizosphere soil 2, 6, 10-trimethyltetradecane and ethyl isocholate is potential compounds that mediated rhizosphere interaction in A. lancea-maize intercropping. Our finding will help to further understanding the role of VOCs in ecosystems, and provide implications for studying the interaction in plant rhizosphere.
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Data availability
All data obtained during the experiment are contained in the manuscript.
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Funding
This study was supported by National Key Research and Development Program of China (2023YFC3503801); The National Natural Science Foundation of China (81874337); Scientific and technological innovation project of China Academy of Chinese Medical Sciences (CI2021A03905, CI2021B013); Construction of Science and Technology Innovation Base of Experimental Training Base of Dexing Institute of Traditional Chinese Medicine (2022AB009); Innovation Team and Talents Cultivation Program of National Administration of Traditional Chinese Medicine (No: ZYYCXTD-D-202005); China Agriculture Research System of MOF and MARA (CARS-21).
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All authors listed contribution to the conception and design of this study. ZP and MY: wrote the original draft and curated data; LP, YZ, and HL conducted investigation, conceptualization, supervision, project administration, and funding acquisition. All authors have read and approved the final manuscript for publication.
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Peng, Z., Cao, M., Yan, B. et al. Maize promoted the growth and volatile oil accumulation of Atractylodes lancea through rhizosphere VOCs. Plant Soil (2023). https://doi.org/10.1007/s11104-023-06460-2
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DOI: https://doi.org/10.1007/s11104-023-06460-2