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Research progress of Associate Professor Yong Jia group on the studies on the colonization characteristics and functions of endophytic microbiota

Endophyte, as an important part of plant micro ecosystem, distributes systematically in plant cell space, and forms a stable mutualism relationship with host plants in the long-term co-evolution process. Plants have a set of strict selective colonization mechanism to regulate the microbial population from the external environment into the plant, but little is known about the migration and re-colonization process of the endophytic microbiota in different parts of the plant.

Recently, research group of Associate Professor Yong Jia and Professor Chuan-Chao Dai reported the distribution of Endophytic microbiota of Atractylodes lanceolata in plants. It was found that endophytic microbiota in leaves of Atractylodes lanceolata could enter into plants selectively from air, and endophytic microbiota in roots could also enter into plants selectively from soil. Endophytic bacteria in leaves and roots are mainly from soil. However, the bacterial microbiota derived from air sources are also partially involved in the construction of endophytic bacterial microbiota in roots. Different plant parts (leaves and roots) have certain specificity for the selection of endophytic bacteria population, which ultimately leads to the difference of endophytic bacteria microbiota in different parts. These endophytes may also affect the formation of volatile oil and other terrestrial components of Atractylodes lanceolata.

In addition, the research team also found that the endophytic microbiota colonized in the plant can not only effectively reduce the organic pollutants in vitro, but also has a good degradation effect for the organic pollutants that have been absorbed into the plant. The relevant research not only enriches our understanding about the colonization laws of endophytic microbiota in plants, but also puts forward the potential of resource utilization of Endophytes in the field of phytoremediation in vivo and in vitro.

                                                    

                                                           Fig. 1 Studies on the colonization characteristics and functions of endophytic microbiota

Published articles:
1.Fu WQ, Xu M, Sun K, Chen XL, Dai CC*, Jia Y*. 2020. Remediation mechanism of endophytic fungus Phomopsis liquidambaris on phenanthrene in vivo. Chemosphere 243: 125–305. 
2.Fu WQ, Xu M, Sun K, Hu LY, Cao W, Dai CC, Jia Y*. 2018. Biodegradation of phenanthrene by endophytic fungus Phomopsis liquidambari in vitro and in vivo. Chemosphere 203: 160–169. 
3.Jia Y, Fu WQ, Xu M, Zhou JY, Xu RS, Dai CC*. 2018. Colonization cues of leaf- and root-inhabiting bacterial microbiota of Atractylodes lancea derived in vitro and in vivo. Plant Soil 430:
49–58.