root nodule

ENVO:01000164 ·resolve ·HOST_ASSOCIATED ·EXACT REVIEWED

Root nodules occur on the roots of plants that associate with symbiotic nitrogen-fixing bacteria. — ENVO

Source attestations

Each upstream vocabulary's own account of this habitat. Assertion counts are per-source units and are not comparable across sources — GOLD counts organisms, BacDive strains, PREGO taxa.

What each upstream vocabulary says about this habitat
Source	Label / path	Assertions	Unit
ENVIRONMENTS_TABLE	host_plant_rootnodule Physicochemical parameter bands from kg-microbe's environment table.	—
GOLD	Host-associated > Plants > Nodule 3 GOLD ecosystem node ids share this path; first shown. See data/raw/gold_ecosystem_paths.tsv.	369	ORGANISM
MADIN	root nodule	40	TAXON

Broader habitats

organ ENVO:01000162
plant-associated environment ENVO:01001001

Environmental parameters

Physicochemical parameters
Parameter	Value	Source
GRADIENTS	high	kg-microbe environments.csv (host_plant_rootnodule)
NUTRIENTS	high	kg-microbe environments.csv (host_plant_rootnodule)
ORGANIC_MATTER	high	kg-microbe environments.csv (host_plant_rootnodule)
PH	medium	kg-microbe environments.csv (host_plant_rootnodule)
PRESSURE	low	kg-microbe environments.csv (host_plant_rootnodule)
SALINITY_VARIABILITY	small	kg-microbe environments.csv (host_plant_rootnodule)
STRUCTURAL_COMPLEXITY	high	kg-microbe environments.csv (host_plant_rootnodule)
TEMPERATURE_VARIABILITY	medium	kg-microbe environments.csv (host_plant_rootnodule)
WATER_AVAILABILITY	high	kg-microbe environments.csv (host_plant_rootnodule)
WATER_VARIABILITY	permanently wet	kg-microbe environments.csv (host_plant_rootnodule)

Associated taxa

Taxa reported from this habitat, which is weaker than being characteristic of it. rank is out of pool: a high rank in a pool of thousands of near-tied scores is a weak claim. Entries corroborated by a second, independent source are listed first.

Taxa reported from this habitat
Taxon	Source	Rank	Pool
Neorhizobium galegae bv. orientalis str. HAMBI 540 `NCBITaxon:1028800`	MADIN	—	40
Bradyrhizobium sp. CCGE-LA001 `NCBITaxon:1223566`	MADIN	—	40
Bradyrhizobium icense `NCBITaxon:1274631`	MADIN	—	40
Rhizobium sp. N113 `NCBITaxon:1703960`	MADIN	—	40
Rhizobium sp. N1314 `NCBITaxon:1703961`	MADIN	—	40
Rhizobium sp. N1341 `NCBITaxon:1703962`	MADIN	—	40
Rhizobium sp. N561 `NCBITaxon:1703963`	MADIN	—	40
Rhizobium sp. N621 `NCBITaxon:1703964`	MADIN	—	40
Rhizobium sp. N6212 `NCBITaxon:1703965`	MADIN	—	40
Rhizobium sp. N731 `NCBITaxon:1703966`	MADIN	—	40
Rhizobium sp. N741 `NCBITaxon:1703967`	MADIN	—	40
Rhizobium sp. N871 `NCBITaxon:1703968`	MADIN	—	40
Rhizobium sp. N324 `NCBITaxon:1703969`	MADIN	—	40
Rhizobium sp. N541 `NCBITaxon:1703970`	MADIN	—	40
Rhizobium sp. N941 `NCBITaxon:1703971`	MADIN	—	40
Rhizobium sp. WYCCWR10014 `NCBITaxon:1825933`	MADIN	—	40
sinorhizobium_americanum `NCBITaxon:194963`	MADIN	—	40
burkholderia_sabiae `NCBITaxon:273251`	MADIN	—	40
kribbella_lupini `NCBITaxon:291602`	MADIN	—	40
Frankia sp. EAN1pec `NCBITaxon:298653`	MADIN	—	40
Phyllobacterium leguminum `NCBITaxon:314237`	MADIN	—	40
Phyllobacterium ifriqiyense `NCBITaxon:314238`	MADIN	—	40
ochrobactrum_ciceri `NCBITaxon:391287`	MADIN	—	40
rhizobium_phaseoli `NCBITaxon:396`	MADIN	—	40
ochrobactrum_cytisi `NCBITaxon:407152`	MADIN	—	40

Also called

Nodule — GOLD

Curation

What a curator decided about this record, and why. A record built from several source concepts can carry one decision per concept.

GROUND 2026-08-14 · claude-opus-5
Grounded to ENVO:01000164 'root nodule' (EXACT). Grounding-cohort review (#62): was UBERON:0004083 'cerebellum vermis lobule X', matched because that term carries 'nodule' as a synonym. GOLD's path is Host-associated > Plants > Nodule, so this is a plant root nodule. Merges with the environment table's and Madin's root-nodule records, which is three sources agreeing on one habitat. (source concept habitatmech:GOLD.c6e9ea67fd)
REVIEW 2026-08-16 · claude-opus-5
Reviewed and endorsed the seeder's own resolution. Risky-grounding review (#12), co-attestor pass: this source concept feeds a record whose grounding was flagged and reviewed, and the record could not reach REVIEWED until every source feeding it was decided. This one is a self-grounding: the source vocabulary names the concept with the ontology term's own label, so there is nothing to adjudicate between the two — checked that the term is the one the label denotes, and that the record it merges into is the same concept rather than a homonym. (source concept habitatmech:MADIN.08ac66c193)

Provenance

Generated by scripts/seed_from_sources.py from the committed inventories in data/raw/. View the record.