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Sorghum SRC1 Subset Community

Ecological State ENGINEERED
Environment rhizosphere
ENVO:00005801
Source File Sorghum_SRC1_Subset.yaml

A simplified synthetic rhizosphere community (SRC1-subset) derived from the larger SRC1 consortium for enhancing sorghum bioenergy crop productivity. The subset consists of 16-20 bacterial strains selected from the full 57-strain SRC1 community, including multiple Pseudomonas, Bacillus, and Arthrobacter strains. This engineered community was designed using network analysis to identify hub taxa and strains capable of utilizing sorghum-specific root exudate compounds. Field-tested studies demonstrate that the community effectively colonizes sorghum rhizosphere and roots, leading to increased shoot biomass and improved yield performance under field conditions. The growth enhancement correlates with transcriptional dampening of lignin biosynthesis in the host plant.

Taxonomy

Taxon Ontology ID Functional Roles Abundance
Pseudomonas sp. NCBITaxon:306
SYNTROPHIC_PARTNER
ABUNDANT
Bacillus sp. NCBITaxon:1386
SYNTROPHIC_PARTNER
ABUNDANT
Arthrobacter sp. NCBITaxon:1667
SYNTROPHIC_PARTNER
ABUNDANT
Streptomyces ambofaciens NCBITaxon:1889
SYNTROPHIC_PARTNER
COMMON
Paenibacillus lautus NCBITaxon:1401
SYNTROPHIC_PARTNER
COMMON
Pseudomonas pudica NCBITaxon:272772
SYNTROPHIC_PARTNER
COMMON
Sorghum bicolor NCBITaxon:4558
PRIMARY_PRODUCER
N/A

Ecological Interactions

Rhizosphere Colonization and Root Association

MUTUALISM

Source Taxon: SRC1 bacterial community

Biological Processes:

Evidence

  • doi:10.1093/ismejo/wrae126 - SUPPORT (IN_VIVO)
    "Here, we engineered a synthetic rhizosphere community (SRC1) with the anticipation that it would exhibit a selective advantage in colonizing the host Sorghum bicolor, thereby potentially fostering its growth"

Plant Growth Promotion and Biomass Enhancement

MUTUALISM

Source Taxon: SRC1 bacterial community

Biological Processes:

Evidence

  • doi:10.1093/ismejo/wrae126 - SUPPORT (IN_VIVO)
    "We establish that SRC1 effectively promotes the growth of both above- and below-ground plant phenotypes in both laboratory and native field contexts"

Lignin Biosynthesis Regulation

MUTUALISM

Biological Processes:

  • lignin biosynthetic process (GO:0009809)
  • regulation of secondary metabolite biosynthetic process (GO:1900376)

Evidence

  • doi:10.1093/ismejo/wrae126 - SUPPORT (IN_VIVO)
    "Furthermore, in laboratory conditions, these growth enhancements correlate with the transcriptional dampening of lignin biosynthesis in the host"

Environmental Factors

Factor Value Unit
Community design strategy network-based and exudate-responsive selection N/A
Community size 16-20 member subset from 57-strain parent consortium N/A
Field testing validated in native field conditions N/A
Biomass enhancement increased shoot fresh and dry weight N/A
Bioenergy crop application sorghum productivity improvement N/A
Inoculation method 1 mg/mL biomass per strain N/A