Abstract
Although elevated CO2 (eCO2) in the atmosphere is one of the main factors influencing climate and ecosystem stability, less research on eCO2 in greenhouse soil systems has been conducted, despite their prevalence. In this article, phospholipid fatty acid (PLFA) profiling, 16S rRNA and Internally Transcribed Spacer (ITS) gene sequencing and high-throughput quantity polymerase chain reactions (HT-qPCRs) for 72 biogeochemical cycling-related genes were used to reveal the comprehensive responses of microbes to 23 days eCO2 fumigation in the soil of a tomato greenhouse. Our results indicated that eCO2 significantly increased microbial biomass (p < 0.05). The fungal community was more susceptible to eCO2 than the bacterial community; the fungal alpha diversity indices decreased significantly under eCO2 (p < 0.05) and the abundance of Ascomycota and its lower level taxa also increased significantly (p < 0.01). The absolute abundance of numerous C, N, P, S and methane cycling related genes increased significantly (p < 0.05) under eCO2. Furthermore, the microbial community structure and function were correlated with certain measured plant characteristics. Hence, the microbial ecosystem of the tomato greenhouse soil system was stimulated under eCO2. These results contribute to a greater understanding of how eCO2 in the atmosphere affects terrestrial ecosystem stability.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Elevated CO2 significantly increased tomato greenhouse soil microbial biomass.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- eCO2e0
- Outcome
- microbial biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“eCO2 significantly increased microbial biomass (p < 0.05)”
t0“Tomato (Lycopersicon esculentum Mill.)”
Claim · model-written summary
Fungal alpha diversity significantly decreased under elevated CO2.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- eCO2e0
- Interactor
- fungale0other
- Outcome
- fungal alpha diversity indicese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the fungal alpha diversity indices decreased significantly under eCO2 (p < 0.05)”
t0“Tomato (Lycopersicon esculentum Mill.)”
Claim · model-written summary
Ascomycota and lower taxa increased significantly under elevated CO2.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- eCO2e1
- Interactor
- AscomycotaAscomycotae0other
- Outcome
- abundance of Ascomycota and its lower level taxae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the abundance of Ascomycota and its lower level taxa also increased significantly (p < 0.01)”
t0“Tomato (Lycopersicon esculentum Mill.)”
e1“abundance of Ascomycota and its lower level taxa also increased significantly (p < 0.01). The absolute abundance of numerous C, N, P, S and methane cycling related genes increased significantly (p < 0.05) under eCO2”
Claim · model-written summary
Biogeochemical cycling gene abundance increased significantly under elevated CO2.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- eCO2e0
- Outcome
- absolute abundance of numerous C, N, P, S and methane cycling related genese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The absolute abundance of numerous C, N, P, S and methane cycling related genes increased significantly (p < 0.05) under eCO2”
t0“Tomato (Lycopersicon esculentum Mill.)”
Claim · model-written summary
Fungal communities were more susceptible to elevated CO2 than bacterial communities.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- eCO2e0
- Outcome
- fungal community was more susceptiblee0
- Direction
- more susceptiblee0
- Comparator
- bacterial communitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fungal community was more susceptible to eCO2 than the bacterial community”
t0“Tomato (Lycopersicon esculentum Mill.)”
Claim · model-written summary
Microbial community structure and function correlated with measured plant characteristics.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- plante0
- Outcome
- microbial community structure and functione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the microbial community structure and function were correlated with certain measured plant characteristics”
t0“Tomato (Lycopersicon esculentum Mill.)”