Skip to content
Closed
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Original file line number Diff line number Diff line change
Expand Up @@ -708,7 +708,7 @@ <h2>Ecological Interactions</h2>
<div class="interaction-header">
<h3>Species drop-out and strain-substitution output shifts</h3>
</div>
<p class="prewrap interaction-description">Removing a species or substituting one of the two strains representing a species significantly changed population dynamics, growth behavior, and metabolic output across the five-species wine yeast consortium.</p>
<p class="prewrap interaction-description">Species drop-out and strain substitution changed population succession, fermentation kinetics and metabolic outputs in the defined five-species synthetic-must panel. These are positive composition-perturbation effects, not identified molecular mechanisms. All tested consortia completed fermentation within the observation period; changed kinetics should not be equated with failure to finish fermentation.</p>



Expand Down Expand Up @@ -748,16 +748,29 @@ <h4>Evidence</h4>

</li>

<li class="evidence-item">
<div>

<a href="https://pubmed.ncbi.nlm.nih.gov/42784437/"
class="pmid-link" target="_blank" rel="noopener noreferrer">PMID:42784437</a>

- SUPPORT (IN_VITRO)
</div>

<div class="snippet">"the molecular mechanisms underlying the observed species- and strain-dependent effects were not addressed in the present work."</div>

</li>

</ul>

</div>

<div class="interaction-card">
<div class="interaction-header">
<h3>Interspecies sugar-utilization competition</h3>
<h3>Inferred interspecies sugar-utilization competition</h3>
<span class="interaction-type">COMPETITION</span>
</div>
<p class="prewrap interaction-description">Fermentation sugar utilization and population measurements together supported competitive interactions among the wine yeast species.</p>
<p class="prewrap interaction-description">PARTIAL: drop-out-associated sugar-preference shifts and compensatory relative-abundance changes support the authors&#39; competition interpretation, principally among L. thermotolerans, S. bacillaris and T. delbrueckii. These consortium-level observations do not resolve a direct inhibitory agent or establish every pairwise relationship. ARISA measures relative DNA-based succession, not absolute viable population size; viable plating provides complementary evidence. Contact, toxins and nitrogen preferences remain candidate mechanisms, not demonstrated causes here.</p>



Expand Down Expand Up @@ -790,7 +803,7 @@ <h4>Evidence</h4>
<a href="https://pubmed.ncbi.nlm.nih.gov/42784437/"
class="pmid-link" target="_blank" rel="noopener noreferrer">PMID:42784437</a>

- SUPPORT (IN_VITRO)
- PARTIAL (IN_VITRO)
</div>

<div class="snippet">"Sugar utilization and population data jointly revealed competitive interactions among species"</div>
Expand All @@ -805,7 +818,7 @@ <h4>Evidence</h4>
<div class="interaction-header">
<h3>Non-Saccharomyces strain-dependent metabolic tuning</h3>
</div>
<p class="prewrap interaction-description">Strain substitutions in the non-Saccharomyces members shifted metabolic output more broadly than the S. cerevisiae strain, while chemical profiles tracked the species and strain identities assembled into each consortium.</p>
<p class="prewrap interaction-description">Among the particular strains tested, non-Saccharomyces substitutions affected a broader range of final metabolites than switching the S. cerevisiae strain. The latter still had detectable effects and was not metabolically silent. This result is panel- and synthetic-must-specific, not a universal ordering of species importance or a demonstration that strain effects share one mechanism.</p>



Expand Down Expand Up @@ -868,21 +881,56 @@ <h4>Evidence</h4>
<!-- Associated Datasets -->

<section id="discussions">
<h2>Knowledge gaps &amp; discussions <span class="muted">(1)</span></h2>
<h2>Knowledge gaps &amp; discussions <span class="muted">(2)</span></h2>

<div class="discussion">
<h3>
<span class="role-badge">KNOWLEDGE_GAP</span>
<span class="role-badge">OPEN</span>
Which exact strain names or culture-collection accessions correspond to the two Saccharomyces cerevisiae, Lachancea thermotolerans, Hanseniaspora uvarum, Starmerella bacillaris, and Torulaspora delbrueckii isolates used in the five-species strain-substitution panel, and which medium and incubation parameters were used for the fermentation assays?
How should the ten reported strains and synthetic-must assay context be represented in the canonical species-level record?
</h3>
<p class="prewrap">The PubMed abstract for PMID:42784437 identifies the five species and states that each was represented by two phenotypically diverging strains, but it does not name the ten strains, their accessions, the exact fermentation medium, temperature, or timing.</p>
<p class="prewrap">The primary article Table 1 names the ten strains, and Methods supplies the synthetic-must assay conditions. The earlier abstract-only gap therefore concerns canonical strain and methods curation rather than missing source information. These non-graph fields require a separate evidence-backed update; species identities and the existing engineering-design block are preserved in this graph repair.</p>

<p class="muted small">Attaches to: <code>taxonomy#Saccharomyces cerevisiae</code>, <code>taxonomy#Lachancea thermotolerans</code>, <code>taxonomy#Hanseniaspora uvarum</code>, <code>taxonomy#Starmerella bacillaris</code>, <code>taxonomy#Torulaspora delbrueckii</code></p>




</div>

<div class="discussion">
<h3>
<span class="role-badge">KNOWLEDGE_GAP</span>
<span class="role-badge">OPEN</span>
Which mechanisms account for the composition-dependent fermentation phenotypes?
</h3>
<p class="prewrap">Drop-outs and substitutions establish composition effects but not their molecular mediators. Relative succession is not a complete pairwise interaction matrix, and non-significant statistical interactions are not proof of absence. Do not transfer contact or toxin mechanisms from other systems to this panel.</p>

<p class="muted small">Attaches to: <code>ecological_interactions#Species drop-out and strain-substitution output shifts</code>, <code>ecological_interactions#Inferred interspecies sugar-utilization competition</code>, <code>ecological_interactions#Non-Saccharomyces strain-dependent metabolic tuning</code></p>



<details class="evidence-list">
<summary class="muted small">1 evidence item(s)</summary>

<div class="evidence">
<div class="evidence-head">





<a href="https://pubmed.ncbi.nlm.nih.gov/42784437/" rel="nofollow noreferrer">PMID:42784437</a>


</div>
<p class="snippet small prewrap">the molecular mechanisms underlying the observed species- and strain-dependent effects were not addressed in the present work.</p>

</div>

</details>


</div>

</section>
Expand Down Expand Up @@ -1142,7 +1190,7 @@ <h2>Environmental Factors</h2>
processes.push("fermentation");


var evidenceCount = 1;
var evidenceCount = 2;

nodes.push({
id: intId,
Expand Down Expand Up @@ -1174,7 +1222,7 @@ <h2>Environmental Factors</h2>

nodes.push({
id: intId,
label: "Interspecies sugar-utilization competition",
label: "Inferred interspecies sugar-utilization competition",
type: "interaction",
interactionType: intType,
metabolites: metabolites,
Expand Down
60 changes: 54 additions & 6 deletions docs/communities/Wine_Yeast_ThreeSpecies_Contact_Consortium.html
Original file line number Diff line number Diff line change
Expand Up @@ -619,7 +619,7 @@ <h2>Ecological Interactions</h2>
<div class="interaction-header">
<h3>Direct-contact S. cerevisiae growth advantage</h3>
</div>
<p class="prewrap interaction-description">When all three yeasts shared the same YNB vessel, direct contact favored S. cerevisiae growth and S. cerevisiae established numerical dominance by the end of the 12 h observation period.</p>
<p class="prewrap interaction-description">In the direct-contact treatment, the three yeast strains shared each YNB vessel while the membrane and recirculation system was retained. S. cerevisiae growth was favored and it established numerical dominance by the end of the 12 h observation period. This positive treatment effect does not identify a necessary contact-sensing gene or demonstrate that the same mechanism operates in every strain.</p>



Expand Down Expand Up @@ -680,7 +680,7 @@ <h4>Evidence</h4>
<div class="interaction-header">
<h3>Indirect-contact Torulaspora growth shift</h3>
</div>
<p class="prewrap interaction-description">When the three yeasts were physically separated but shared filtered medium, T. delbrueckii dominated early biomass growth while L. thermotolerans growth was lower than in the direct-contact mixed culture.</p>
<p class="prewrap interaction-description">Physical separation with shared filtered medium favored early T. delbrueckii growth while L. thermotolerans declined more than in direct contact. HYPOTHESIZED: medium-mediated suppression of L. thermotolerans by T. delbrueckii could explain the pattern. Neither a killer toxin nor a specific inhibitory metabolite was established as its cause, and indirect pairwise confirmation was still needed. No pairwise causal arrow is inferred from this comparison.</p>



Expand Down Expand Up @@ -726,7 +726,7 @@ <h4>Evidence</h4>
<a href="https://pubmed.ncbi.nlm.nih.gov/42176030/"
class="pmid-link" target="_blank" rel="noopener noreferrer">PMID:42176030</a>

- SUPPORT (IN_VITRO)
- PARTIAL (IN_VITRO)
</div>

<div class="snippet">"T. delbrueckii likely suppresses growth of L. thermotolerans through a medium-mediated mechanism."</div>
Expand All @@ -741,7 +741,7 @@ <h4>Evidence</h4>
<div class="interaction-header">
<h3>Contact-dependent amino acid profile shift</h3>
</div>
<p class="prewrap interaction-description">Extracellular amino acid concentrations differed between direct and indirect contact fermentations after 5 h; the measured serine, glycine, valine, aspartic acid, and arginine concentrations were higher in the indirect-contact condition, with no significant difference after 9 h.</p>
<p class="prewrap interaction-description">Extracellular amino acid concentrations differed between direct and indirect contact fermentations after 5 h; the measured serine, glycine, valine, aspartic acid, and arginine concentrations were higher in the indirect-contact condition, with no significant difference after 9 h. The difference does not by itself demonstrate increased secretion, reduced uptake or cross-feeding; secretion, cell death and partial lysis remain possible contributors. YNB already supplied histidine, methionine and tryptophan.</p>



Expand Down Expand Up @@ -783,6 +783,19 @@ <h4>Evidence</h4>

</li>

<li class="evidence-item">
<div>

<a href="https://pubmed.ncbi.nlm.nih.gov/42176030/"
class="pmid-link" target="_blank" rel="noopener noreferrer">PMID:42176030</a>

- SUPPORT (IN_VITRO)
</div>

<div class="snippet">"No statistically significant differences between these conditions were observed after 9 h"</div>

</li>

</ul>

</div>
Expand Down Expand Up @@ -828,7 +841,7 @@ <h2>Associated Datasets</h2>
</section>

<section id="discussions">
<h2>Knowledge gaps &amp; discussions <span class="muted">(1)</span></h2>
<h2>Knowledge gaps &amp; discussions <span class="muted">(2)</span></h2>

<div class="discussion">
<h3>
Expand All @@ -843,6 +856,41 @@ <h3>



</div>

<div class="discussion">
<h3>
<span class="role-badge">KNOWLEDGE_GAP</span>
<span class="role-badge">OPEN</span>
Which medium-mediated process explains the indirect-contact growth shift?
</h3>
<p class="prewrap">The three-species treatment comparison supports contrasting growth patterns. It does not isolate a T. delbrueckii inhibitor, and the paper explicitly requires indirect pairwise confirmation. Transcriptional differences, including HXT and HPF1 responses, are not selective genetic perturbations proving the contact mechanism. The separate amino-acid-origin discussion remains open.</p>

<p class="muted small">Attaches to: <code>ecological_interactions#Direct-contact S. cerevisiae growth advantage</code>, <code>ecological_interactions#Indirect-contact Torulaspora growth shift</code>, <code>ecological_interactions#Contact-dependent amino acid profile shift</code></p>



<details class="evidence-list">
<summary class="muted small">1 evidence item(s)</summary>

<div class="evidence">
<div class="evidence-head">





<a href="https://pubmed.ncbi.nlm.nih.gov/42176030/" rel="nofollow noreferrer">PMID:42176030</a>


</div>
<p class="snippet small prewrap">T. delbrueckii likely suppresses growth of L. thermotolerans through a medium-mediated mechanism.</p>

</div>

</details>


</div>

</section>
Expand Down Expand Up @@ -1217,7 +1265,7 @@ <h4 style="color: var(--text);">Evidence</h4>

var processes = [];

var evidenceCount = 2;
var evidenceCount = 3;

nodes.push({
id: intId,
Expand Down
Loading