Abstract
ABSTRACT Potato is the world's third most important food crop, yet its production relies heavily on pesticides, creating a need for sustainable alternatives. We assessed how straw mulching, a practice known to improve soil fertility, enrich microbial activity, and suppress diseases, affects below‐ground bacterial community structure and functional potential across different potato‐associated sample types. A field experiment was conducted in northern Sweden using two potato cultivars under mulched and control soil conditions. Samples from the rhizosphere, root, soil, and tuber peel were analyzed using 16S ribosomal RNA (rRNA) gene sequencing (Illumina platform) to assess bacterial diversity and community composition. Straw mulching significantly increased bacterial richness and altered community structure across sample types and cultivars. Copiotrophic genera, which thrive in nutrient‐rich environments, included Rhodanobacter , Mucilaginibacter , Flavobacterium , and Pseudomonas , and were enriched in rhizosphere, root, and tuber peel. Oligotrophs such as Bryobacter and Candidatus Solibacter dominated the soil and are known to contribute to organic matter turnover and plant growth. Notably, in the peel of one cultivar ( King Edward ), the abundance of Pseudomonas increased 5–7‐fold, correlating with elevated starch and ascorbic acid contents of the tubers. In conclusion, the effect of straw mulching on soil bacterial communities and tuber quality appears to be diverse and cultivar dependent. Long‐term and large‐scale studies are needed to evaluate cumulative impacts on soil health, yield, and resilience.
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Claims 7
Claim · model-written summary
Straw mulching increased bacterial richness.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Straw mulchinge0
- Outcome
- bacterial richnesse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Depending on eDNA Source and Cultivar”
e0“Straw mulching significantly increased bacterial richness and altered community structure across sample types and cultivars”
Claim · model-written summary
Straw mulching altered bacterial community structure across sample types and cultivars.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Straw mulchinge0
- Outcome
- community structuree0
- Qualifier
- altered community structure across sample types and cultivarse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Depending on eDNA Source and Cultivar”
e0“Straw mulching significantly increased bacterial richness and altered community structure across sample types and cultivars”
Claim · model-written summary
Copiotrophic genera Rhodanobacter, Mucilaginibacter and Flavobacterium were enriched in rhizosphere, root and tuber peel.
- Taxon
- PotatoSolanum tuberosumt0
- Organ / stage
- rhizosphere, root, and tuber peele1
- Interactor
- Rhodanobacter , Mucilaginibacter , FlavobacteriumFlavobacteriumRhodanobacterMucilaginibactere1other
- Outcome
- Copiotrophic generae1
- Direction
- enrichede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Depending on eDNA Source and Cultivar”
e1“Copiotrophic genera, which thrive in nutrient‐rich environments, included Rhodanobacter , Mucilaginibacter , Flavobacterium , and Pseudomonas , and were enriched in rhizosphere, root, and tuber peel”
Claim · model-written summary
Pseudomonas was enriched in rhizosphere, root and tuber peel.
- Taxon
- PotatoSolanum tuberosumt0
- Organ / stage
- rhizosphere, root, and tuber peele1
- Interactor
- Pseudomonas
Pseudomonase1other - Outcome
- Copiotrophic generae1
- Direction
- enrichede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Depending on eDNA Source and Cultivar”
e1“Copiotrophic genera, which thrive in nutrient‐rich environments, included Rhodanobacter , Mucilaginibacter , Flavobacterium , and Pseudomonas , and were enriched in rhizosphere, root, and tuber peel”
Claim · model-written summary
Pseudomonas abundance increased 5–7-fold in the peel of cultivar King Edward.
- Taxon
- PotatoSolanum tuberosumt0
- Material
- King Edwarde2
- Organ / stage
- peele2
- Outcome
- abundance of Pseudomonase2
- Direction
- increasede2
- Value
- 5–7‐folde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Depending on eDNA Source and Cultivar”
e2“Notably, in the peel of one cultivar ( King Edward ), the abundance of Pseudomonas increased 5–7‐fold, correlating with elevated starch and ascorbic acid contents of the tubers”
Claim · model-written summary
Pseudomonas abundance correlated with elevated starch and ascorbic acid contents of tubers.
- Taxon
- PotatoSolanum tuberosumt0
- Organ / stage
- tuberse2
- Outcome
- starch and ascorbic acid contentse2
- Direction
- elevatede2
- Qualifier
- correlating withe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Depending on eDNA Source and Cultivar”
e2“Notably, in the peel of one cultivar ( King Edward ), the abundance of Pseudomonas increased 5–7‐fold, correlating with elevated starch and ascorbic acid contents of the tubers”
Claim · model-written summary
Oligotrophs Bryobacter and Candidatus Solibacter dominated the soil.
- Taxon
- PotatoSolanum tuberosumt0
- Interactor
- Bryobacter and Candidatus SolibacterCandidatus SolibacterBryobactere3other
- Outcome
- Oligotrophse3
- Qualifier
- dominated the soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato Depending on eDNA Source and Cultivar”
e3“Oligotrophs such as Bryobacter and Candidatus Solibacter dominated the soil”