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Title: Roots from distinct plant developmental stages are capable of rapidly selecting their own microbiome without the influence of environmental and soil edaphic factors

Author
item YUAN, JUN - Nanjing Agricultural University
item CHAPARRO, JACQUELINE - Colorado State University
item Manter, Daniel
item ZHANG, RUIFU - Nanjing Agricultural University
item VIVANCO, JORGE - Colorado State University
item SHEN, QIRONG - Nanjing Agricultural University

Submitted to: Journal of Soil Biology and Biochemistry
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/14/2015
Publication Date: 7/26/2015
Citation: Yuan, J., Chaparro, J.M., Manter, D.K., Zhang, R., Vivanco, J.M., Shen, Q. 2015. Roots from distinct plant developmental stages are capable of rapidly selecting their own microbiome without the influence of environmental and edaphic factors. Soil Biology and Biochemistry. 89:206-209. doi: 10.1016/j.soilbio.2015.07.009.

Interpretive Summary: Soil microbes live in close association with plants and are crucial for plant health and fitness. Recent literature revealed that specific microbes were cultured at distinct developmental stages of Arabidopsis. It is not clear how fast the roots, depending on their developmental stage, can alter the root-associated microbiome. This work highlights that (i) the root microbiome was rapidly altered by plant developmental stage, (ii) proteobacteria were among the quickest bacteria to colonize roots, and (iii) root-associated bacteria can cause the induction of phytohormones.

Technical Abstract: Soil microbes live in close association with plants and are crucial for plant health and fitness. Recent literature revealed that specific microbes were cultured at distinct developmental stages of Arabidopsis. It is not clear how fast the roots, depending on their developmental stage, can alter the root-associated microbiome. In this study, Arabidopsis, grown under sterile conditions at precisely distinct developmental stages were supplied with a soil microbial slurry. Within four days, roots selected specific microorganisms depending on plant development, and Proteobacteria among other bacterial groups were found to colonize the roots irrespective of developmental stage. Moreover, exposure to a microbiome resulted in modulation of phytohormone levels at different stages of Arabidopsis.