Abstract
The inherent deficiency of available nitrogen (N) and phosphorus (P) in acidic soils severely limits productivity in agriculture and forestry. While plant-beneficial microorganisms offer a sustainable solution, the mechanisms by which endophytic actinobacteria regulate N and P absorption and utilization remain largely unexplored. In this study, we characterize Streptomyces sp. CoH27, an endophyte isolated from Camellia oleifera, which exhibits pronounced abilities in N fixation and insoluble P solubilization. Inoculation with CoH27 significantly promoted the growth of C. oleifera across different ages and propagation types, as evidenced by enhanced root architecture, improved photosynthetic parameters, and increased N and P absorption and utilization efficiencies. Physiological analyses revealed that CoH27 colonization upregulated the activity of key enzymes involved in organic acid synthesis and N assimilation in roots, thereby enhancing rhizosphere P mobilization and plant N utilization. Furthermore, CoH27 reshaped the rhizosphere microbiome, increasing bacterial diversity and the abundance of beneficial taxa, while reinforcing microbial networks. The driving effect of nutrient cycling was evidenced with enriched abundance of microbial genes involved in P solubilization (phnA, ppa) and N metabolism (nasA, narB, amoA, nxrA). Concurrently, transcriptomics identified the upregulation of critical transporter genes (CoPHT1;4, CoNRT2.5) and transcription factors in CoH27-inoculated roots, orchestrating improved N and P uptake and assimilation. The efficacy of CoH27 was further validated in Brassica napus L. and Capsicum annuum L., underscoring its potential as a versatile microbial inoculant to enhance sustainable crop production in acidic soils.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 12
Claim · model-written summary
CoH27 showed N fixation and insoluble P solubilization.
- Taxon
- Camellia oleifera
Camellia oleiferae0 - Interactor
- Streptomyces sp. CoH27
Streptomyces sp. CoH27e0symbiont - Outcome
- N fixation and insoluble P solubilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Streptomyces sp. CoH27, an endophyte isolated from Camellia oleifera, which exhibits pronounced abilities in N fixation and insoluble P solubilization.”
Claim · model-written summary
CoH27 inoculation promoted growth of C. oleifera across ages and propagation types.
- Taxon
- C. oleiferaCamellia oleiferae0
- Treatment
- Inoculation with CoH27e0
- Interactor
- CoH27e0symbiont
- Outcome
- growthe0
- Direction
- promotede0
- Qualifier
- across different ages and propagation typese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with CoH27 significantly promoted the growth of C. oleifera across different ages and propagation types”
Claim · model-written summary
CoH27 inoculation enhanced root architecture and photosynthetic parameters.
- Taxon
- C. oleiferaCamellia oleiferae0
- Treatment
- Inoculation with CoH27e0
- Interactor
- CoH27e0symbiont
- Outcome
- root architecture, improved photosynthetic parameterse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with CoH27 significantly promoted the growth of C. oleifera across different ages and propagation types, as evidenced by enhanced root architecture, improved photosynthetic parameters, and increased N and P absorption and utilization efficiencies.”
Claim · model-written summary
CoH27 inoculation increased N and P absorption and utilization efficiencies.
- Taxon
- C. oleiferaCamellia oleiferae0
- Treatment
- Inoculation with CoH27e0
- Interactor
- CoH27e0symbiont
- Outcome
- N and P absorption and utilization efficienciese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with CoH27 significantly promoted the growth of C. oleifera across different ages and propagation types, as evidenced by enhanced root architecture, improved photosynthetic parameters, and increased N and P absorption and utilization efficiencies.”
Claim · model-written summary
CoH27 colonization increased root enzyme activity for organic acid synthesis and N assimilation.
- Taxon
- Camellia oleiferaCamellia oleiferae1
- Treatment
- CoH27 colonizatione0
- Interactor
- CoH27e0symbiont
- Outcome
- activity of key enzymes involved in organic acid synthesis and N assimilation in rootse0
- Direction
- upregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CoH27 colonization upregulated the activity of key enzymes involved in organic acid synthesis and N assimilation in roots, thereby enhancing rhizosphere P mobilization and plant N utilization.”
e1“isolated from Camellia oleifera”
Claim · model-written summary
CoH27 colonization enhanced rhizosphere P mobilization and plant N utilization.
- Taxon
- Camellia oleiferaCamellia oleiferae1
- Treatment
- CoH27 colonizatione0
- Interactor
- CoH27e0symbiont
- Outcome
- rhizosphere P mobilization and plant N utilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CoH27 colonization upregulated the activity of key enzymes involved in organic acid synthesis and N assimilation in roots, thereby enhancing rhizosphere P mobilization and plant N utilization.”
e1“isolated from Camellia oleifera”
Claim · model-written summary
CoH27 increased rhizosphere bacterial diversity and beneficial taxa abundance.
- Taxon
- Camellia oleiferaCamellia oleiferae1
- Treatment
- CoH27e0
- Interactor
- CoH27e0symbiont
- Outcome
- bacterial diversity and the abundance of beneficial taxae0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CoH27 reshaped the rhizosphere microbiome, increasing bacterial diversity and the abundance of beneficial taxa, while reinforcing microbial networks.”
e1“isolated from Camellia oleifera”
Claim · model-written summary
CoH27 reinforced microbial networks.
- Taxon
- Camellia oleiferaCamellia oleiferae1
- Interactor
- CoH27e0symbiont
- Outcome
- reinforcing microbial networkse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CoH27 reshaped the rhizosphere microbiome, increasing bacterial diversity and the abundance of beneficial taxa, while reinforcing microbial networks.”
e1“isolated from Camellia oleifera”
Claim · model-written summary
Microbial P solubilization and N metabolism genes were enriched.
- Taxon
- Camellia oleiferaCamellia oleiferae1
- Gene
- phnA, ppae0
- Outcome
- abundance of microbial genese0
- Qualifier
- N metabolism (nasA, narB, amoA, nxrA)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enriched abundance of microbial genes involved in P solubilization (phnA, ppa) and N metabolism (nasA, narB, amoA, nxrA).”
e1“isolated from Camellia oleifera”
Claim · model-written summary
CoH27-inoculated roots upregulated transporter genes and transcription factors.
- Taxon
- Camellia oleiferaCamellia oleiferae1
- Organ / stage
- rootse0
- Interactor
- CoH27e0symbiont
- Gene
- CoPHT1;4, CoNRT2.5e0
- Outcome
- upregulation of critical transporter genese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“upregulation of critical transporter genes (CoPHT1;4, CoNRT2.5) and transcription factors in CoH27-inoculated roots”
e1“isolated from Camellia oleifera”
Claim · model-written summary
CoH27 efficacy was also validated in Brassica napus.
- Taxon
- Brassica napus L.
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Interactor
- CoH27e0symbiont
- Outcome
- efficacy of CoH27e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“The efficacy of CoH27 was further validated in Brassica napus L. and Capsicum annuum L.”
Claim · model-written summary
CoH27 efficacy was also validated in Capsicum annuum.
- Taxon
- Capsicum annuum L.
Capsicum annuume0 - Interactor
- CoH27e0symbiont
- Outcome
- efficacy of CoH27e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The efficacy of CoH27 was further validated in Brassica napus L. and Capsicum annuum L.”
The same questions in other papers
inoculation · physiology: photosynthesis · Camellia oleifera (tea-oil Camellia)Results agree
2 papers in the same direction as this paper
- positive
- positive
inoculation · nutrient: content · Camellia oleifera (tea-oil Camellia)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →inoculation · growth · Camellia oleifera (tea-oil Camellia)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.