Bioinformatic prediction assigned T4 a distributed enzyme set covering the five enzyme classes the authors considered necessary for the cyantraniliprole degradation pathway. Individual predicted enzyme activities differed among strains, so the record captures this as community-level functional complementarity and not as a resolved pairwise metabolite exchange. -
+Post-assay bioinformatic analysis assigns the T4 strains a combined repertoire spanning five enzyme classes proposed for cyantraniliprole transformation. These are predicted functions and pathway coverage, not measured enzyme expression, catalytic activity or necessary member-specific flux. The six-strain aggregate can have complementary potential without demonstrated reciprocal fitness benefits or resolved metabolite exchange; the simpler four-strain design suggested by the authors was not experimentally validated.
+ + + + +Participating Taxa: + + Bacillus subtilis subsp. subtilis AZFS3, + Bacillus pumilus AZFS5, + Bacillus mojavensis AZFS15, + Bacillus paramycoides AZFS18, + + Pseudomonas aeruginosa KZFS4, + + Alcaligenes aquatilis KZFS11 + +
@@ -819,14 +833,28 @@In simulated contaminated water amended with NPK and incubated at 30 C, T4 removed 98.27% of the 57.79 mg/L zero-day cyantraniliprole residue from the nominal 60 mg/L dose and left the lowest 20-day residual concentration among the tested consortia. -
+In NPK-amended freshwater microcosms incubated at 30 C for 20 days, T4 augmentation was associated with HPLC-measured cyantraniliprole decline from a 57.79 mg/L zero-day residue to 1.00 mg/L, corresponding to 98.27% removal from the recovered starting residue after a nominal 60 mg/L spike. This positive treatment-level outcome occurred alongside a native water microbiota and exceeded uninoculated controls. Parent-compound loss does not establish complete mineralization, detoxification, member-specific contribution, reciprocal benefit or enzyme mediation.
+Participating Taxa: + + Bacillus subtilis subsp. subtilis AZFS3, + + Bacillus pumilus AZFS5, + + Bacillus mojavensis AZFS15, + + Bacillus paramycoides AZFS18, + + Pseudomonas aeruginosa KZFS4, + + Alcaligenes aquatilis KZFS11 + +
+Metabolites: @@ -887,13 +915,11 @@
The 2026 study used bioinformatic prediction to map candidate cyantraniliprole-degradation enzymes and noted simpler transformation products, but it did not experimentally assign expressed enzymes or measured intermediates to specific T4 strains. -
+The complete primary body supports positive HPLC parent-removal outcomes, growth and redox proxies, and post-assay predicted pathway coverage. It does not experimentally assign the predicted enzyme activities or intermediary flux to T4 strains. Selective member/enzyme perturbations, product identification and mass balance would test mediation and distinguish removal from mineralization or detoxification. Reciprocal fitness benefits and the suggested reduced consortium remain untested. The former prediction-to-removal workflow arrow is not restored. Salinity and temperature inconsistencies in non-graph metadata remain in #1371.
-Attaches to: ecological_interactions#T4 distributed cyantraniliprole enzyme potential
Attaches to: ecological_interactions#T4 distributed cyantraniliprole enzyme potential, ecological_interactions#HPLC-confirmed cyantraniliprole removal
Switching between chalcopyrite and chalcocite reshapes member abundances in the bioleaching consortium, reflecting differences in mineral structure and Fe availability.
+Serially passaged SC3 enrichments on chalcopyrite and chalcocite showed different metagenomic community profiles, including differences between attached and planktonic fractions at eight weeks. The four named taxonomic groups are an aggregate view of the recovered organisms. These positive mineral-treatment and microhabitat observations support ecological selection, but the combined mineral-structure, dissolution and Fe-availability changes do not isolate Fe as the sole cause. Relative DNA profiles from pooled replicate samples and gene annotations do not directly measure each member's metabolic niche or flux.
+ + +Participating Taxa: + Acidithiobacillus species, + + Leptospirillum ferrodiazotrophum, + + Rhodospirillales bacterium, + + Thermoplasmatales archaea + +
@@ -701,28 +702,7 @@Biological Processes:
-Mineral type and planktonic-versus-attached partitioning define the acidophile consortium in which plasmids encoding metal resistance, sulphur metabolism, and CRISPR-Cas loci were recovered.
-Plasmid-encoded metal resistance pathways, sulphur metabolic capacities, and CRISPR-Cas loci are widespread in the bioleaching consortium and may modulate microbial activity during sulphide ore dissolution.
+The metagenomic analysis recovered twelve distinct putative plasmids, some encoding predicted metal-resistance, sulphur-metabolism or CRISPR-associated functions. Named participants represent the explicitly Acidithiobacillus- and Leptospirillum-associated subset, not every host or every listed function. Copper-resistance candidates on an Alphaproteobacteria-related plasmid are not assigned specifically to the canonical Rhodospirillales member or to archaea. Gene content and phylogenetic association do not demonstrate expression, host benefit, horizontal transfer or a plasmid-caused increase in bioleaching.
+ +Participating Taxa: + + Acidithiobacillus species, + + Leptospirillum ferrodiazotrophum + +
@@ -773,16 +760,6 @@CRISPR-Cas loci were among the plasmid-borne functions, and the Acidithiobacillus Plasmid_56_509 CRISPR spacers provided the specific evidence for plasmid-plasmid competition within the consortium.
-CRISPR spacers on an Acidithiobacillus plasmid target plasmid- borne conjugal transfer genes from the same genus, indicating intra-plasmid competition among co-resident mobile elements.
- +HYPOTHESIZED - CRISPR spacers on Acidithiobacillus-associated Plasmid_56_509 match two unbinned Acidithiobacillus-like contigs containing conjugation-related genes. This supports a putative plasmid interference model in that host group. The source-only scope records the host-associated molecular capability, not a taxon-to-taxon competitive relationship. Sequence matches do not demonstrate target cleavage, blocked conjugation, plasmid exclusion, confirmed co-residence in a cell or reciprocal harm among the microbial members.
+Source Taxon: Acidithiobacillus species
-Biological Processes:
-The main body and tables distinguish measured composition/solution chemistry from predicted organism/plasmid functions. The two removed arrows were a recovery-context link and a general-repertoire-to-example link, not causal dependencies. Plasmid perturbations, expression/flux assays, host resolution and conjugation/interference experiments would test the proposed functions. Relative abundance and spacer matches alone cannot assign benefits or competition. The literature-derived sulphur pathway diagram is not a measured organism-resolved exchange map. No figure images or supplementary files were inspected. Non-graph mineral oxidation-state and Fe-specific attribution wording remains in #1372.
+ +Attaches to: ecological_interactions#Mineral- and Fraction-Associated Community Profiles, ecological_interactions#Plasmid-Encoded Functional Potential, ecological_interactions#Putative Acidithiobacillus Plasmid CRISPR Interference
Sphaerochaeta globosa metabolizes lignocellulose-derived intermediates (xylose, glucose, pyruvate, acetate) and transfers electrons via direct interspecies electron transfer to Methanosarcina mazei, which uses them to reduce CO2 to methane.
+HYPOTHESIZED - Sphaerochaeta globosa is proposed to participate in direct electron delivery to Methanosarcina mazei in the two simplified lignocellulose-digesting consortia. The abstract links the dominant bacterial pair collectively to intermediates including xylose, glucose, pyruvate and acetate; it does not assign every substrate or flux separately to this donor. Community conductivity, cytochrome-associated spectra and metagenomic profiles support the model but do not distinguish this route from hydrogen/formate transfer, establish obligate donor dependence, or trace direct electron delivery by this particular partner.
Source Taxon: Sphaerochaeta globosa
@@ -683,9 +688,8 @@Electron transfer from S. globosa to M. mazei contributes reducing power for methanogenic CO2 reduction in the DIETsimp consortia. -
+ → Proposed M. mazei CO2 Reduction to Methane +HYPOTHESIZED - direct electron delivery by Sphaerochaeta globosa could supply reducing equivalents for the proposed M. mazei CO2-to-methane step. The available abstract proposes this contribution but does not trace donor-specific electrons, establish the carrier, or selectively perturb that route; this arrow does not assert a dependency between the two bacterial donors.
Clostridium aceticum (Andreesenella acetica) metabolizes lignocellulose-derived intermediates (xylose, glucose, pyruvate, acetate) and transfers electrons via direct interspecies electron transfer to Methanosarcina mazei, which uses them to reduce CO2 to methane.
+HYPOTHESIZED - Clostridium aceticum (Andreesenella acetica) is proposed to participate in direct electron delivery to Methanosarcina mazei in the two simplified lignocellulose-digesting consortia. The abstract links the dominant bacterial pair collectively to intermediates including xylose, glucose, pyruvate and acetate; it does not assign every substrate or flux separately to this donor. Community conductivity, cytochrome-associated spectra and metagenomic profiles support the model but do not distinguish this route from hydrogen/formate transfer, establish obligate donor dependence, or trace direct electron delivery by this particular partner.
Source Taxon: Clostridium aceticum
@@ -764,9 +768,8 @@Electron transfer from C. aceticum to M. mazei contributes reducing power for methanogenic CO2 reduction in the DIETsimp consortia. -
+ → Proposed M. mazei CO2 Reduction to Methane +HYPOTHESIZED - direct electron delivery by Clostridium aceticum (Andreesenella acetica) could supply reducing equivalents for the proposed M. mazei CO2-to-methane step. The available abstract proposes this contribution but does not trace donor-specific electrons, establish the carrier, or selectively perturb that route; this arrow does not assert a dependency between the two bacterial donors.
Methanosarcina mazei accepts electrons transferred from the dominant electroactive bacteria and uses them to reduce carbon dioxide to methane in the simplified lignocellulose-degrading DIET consortia. -
+HYPOTHESIZED - the proposed model assigns CO2 reduction to methane to dominant Methanosarcina mazei using electrons attributed to the bacterial partners. This is an intrinsic methanogen step, not a separate whole-community syntrophic relationship. Lower-pH conductivity and enhanced cytochrome-associated electrochemical FTIR signals are positive community-level observations consistent with the DIET model, but do not measure the M. mazei-specific contribution or exclude alternative electron carriers and methanogenic routes. Reported methane-performance improvements are not selective tests of this mechanism.
+ +Source Taxon: Methanosarcina mazei
@@ -844,13 +847,26 @@An Edison causal-graph pass (PMID:42229598) found no justifiable directed causal edge for this consortium: both interactions are recorded as "Proposed DIET pathway", the primary full text was inaccessible, and no perturbation (donor-removal, inhibitor, mono-/co-culture, or knockout) evidence was retrieved. The source supports two parallel donor→methanogen proposals, not a causal dependency of one on the other, so no `downstream` edge was added. Neutral-red-mediated electron delivery to M. mazei reported in a different system must not be imported here without exact-system verification. -
+The complete primary abstract contains positive pH-dependent conductivity, cytochrome-associated spectral and metagenomic observations, but explicitly calls the methanogenic route proposed. Full Methods/Results, donor-resolved tracing and selective perturbations were not available in this review. Both existing arrows are retained as hypotheses connecting parallel donor proposals to the methanogen's intrinsic step; neither makes one donor relationship depend on the other. This corrects the older no-downstream wording without asserting new structure. Neutral-red-mediated electron delivery or other-system demonstrations must not be imported as exact-system evidence. Non-graph taxon roles, mechanism language and performance-versus-protocol distinctions remain in #1373.
-Attaches to: ecological_interactions#DIET syntrophy from S. globosa to M. mazei, ecological_interactions#DIET syntrophy from C. aceticum to M. mazei
Attaches to: ecological_interactions#Proposed S. globosa to M. mazei DIET Syntrophy, ecological_interactions#Proposed C. aceticum to M. mazei DIET Syntrophy, ecological_interactions#Proposed M. mazei CO2 Reduction to Methane
during anaerobic digestion of lignocellulose that S. globosa and C. aceticum metabolized intermediates
-The consortium role is stated at the level of intermediate metabolism / proposed DIET, without a validated or perturbation-tested causal mechanism — the basis for the knowledge gap.
+This excerpt belongs to the abstract's explicitly proposed mechanism. It does not invalidate the positive community measurements, but cannot establish partner-specific direct transfer or its share of methane production.