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Functional assembly of root-associated microbial consortia improves nutrient efficiency and yield in soybean.
- Source :
-
Journal of integrative plant biology [J Integr Plant Biol] 2021 Jun; Vol. 63 (6), pp. 1021-1035. Date of Electronic Publication: 2021 Apr 04. - Publication Year :
- 2021
-
Abstract
- Root-associated microbes are critical for plant growth and nutrient acquisition. However, scant information exists on optimizing communities of beneficial root-associated microbes or the mechanisms underlying their interactions with host plants. In this report, we demonstrate that root-associated microbes are critical influencers of host plant growth and nutrient acquisition. Three synthetic communities (SynComs) were constructed based on functional screening of 1,893 microbial strains isolated from root-associated compartments of soybean plants. Functional assemblage of SynComs promoted significant plant growth and nutrient acquisition under both N/P nutrient deficiency and sufficiency conditions. Field trials further revealed that application of SynComs stably and significantly promoted plant growth, facilitated N and P acquisition, and subsequently increased soybean yield. Among the tested communities, SynCom1 exhibited the greatest promotion effect, with yield increases of up to 36.1% observed in two field sites. Further RNA-seq implied that SynCom application systemically regulates N and P signaling networks at the transcriptional level, which leads to increased representation of important growth pathways, especially those related to auxin responses. Overall, this study details a promising strategy for constructing SynComs based on functional screening, which are capable of enhancing nutrient acquisition and crop yield through the activities of beneficial root-associated microbes.<br /> (© 2021 Institute of Botany, Chinese Academy of Sciences.)
Details
- Language :
- English
- ISSN :
- 1744-7909
- Volume :
- 63
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Journal of integrative plant biology
- Publication Type :
- Academic Journal
- Accession number :
- 33491865
- Full Text :
- https://doi.org/10.1111/jipb.13073