Exogenously applied ferulic acid and p-coumaric acid differentially affect cucumber rhizosphere Trichoderma spp. community structure and abundance

Muhammad Khashi U Rahman, Shengcheng Tan, Changli Ma, Fengzhi Wu and Xingang Zhou
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Muhammad Khashi U Rahman: Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Development, Northeast Agricultural University, Harbin, P.R. China
Shengcheng Tan: Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Development, Northeast Agricultural University, Harbin, P.R. China
Changli Ma: Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Development, Northeast Agricultural University, Harbin, P.R. China
Fengzhi Wu: Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Development, Northeast Agricultural University, Harbin, P.R. China
Xingang Zhou: Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Development, Northeast Agricultural University, Harbin, P.R. China

Plant, Soil and Environment, 2020, vol. 66, issue 9, 461-467

Abstract: Continuous monocropping can cause the buildup of autotoxins (e.g., phenolic compounds) in the soil, which can alter soil microbial community and inhibit plant growth. However, how different phenolic compounds affect certain soil microbiota is unclear. Here, we studied the response of cucumber rhizosphere Trichoderma spp. community to exogenously applied ferulic and p-coumaric acids by polymerase chain reaction denaturing gradient gel electrophoresis (PCR-DGGE) and real-time PCR techniques. Results showed that ferulic acid, but not p-coumaric acid, increased the Trichoderma spp. abundance, and this increase were positively correlated with ferulic acid concentration. Moreover, ferulic acid changed the community structure, increased the number of DGGE bands, Shannon wiener, and evenness index values, while p-coumaric acid had no effect on all these parameters of Trichoderma spp. community. These results suggest that these two phenolic acids affected Trichoderma spp. differentially at the community level.

Keywords: Cucumis sativus L.; microorganism; root exudate; antioxidant; soil sickness; allelochemicals (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:66:y:2020:i:9:id:681-2019-pse

DOI: 10.17221/681/2019-PSE

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