Abstract
Centella asiatica is a traditional herbaceous plant with numerous beneficial effects, widely known for its medicinal and cosmetic applications. Maximizing its growth can lead to beneficial effects, by focusing on the use of its active compounds. The use of plant growth-promoting rhizobacteria (PGPR) is known to be an alternative to chemical fertilizers. In this study, we used the PGPR Priestia megaterium HY-01 to increase the yield of C. asiatica. In vitro assays showed that HY-01 exhibited plant growth-promoting activities (IAA production, denitrification, phosphate solubilization, and urease activity). Genomic analyses also showed that the strain has plant growth-promoting-related genes that corroborate with the different PGP activities found in the assays. This strain was subsequently used in field experiments to test its effectiveness on the growth of C. asiatica. After four months of application, leaf and root samples were collected to measure the plant growth rate. Moreover, we checked the rhizosphere microbiome between the treated and non-treated plots. Our results suggest that treatment with Hyang-yak-01 not only improved the growth of C. asiatica (leaf length, leaf weight, leaf width, root length, root width, and chlorophyll content) but also influenced the rhizosphere microbiome. Biodiversity was higher in the treated group, and the bacterial composition was also different from the control group.
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Claims 8
Claim · model-written summary
HY-01 exhibited IAA production, denitrification and phosphate solubilization in vitro.
Verbatim
e0“In vitro assays showed that HY-01 exhibited plant growth-promoting activities (IAA production, denitrification, phosphate solubilization, and urease activity).”
Claim · model-written summary
HY-01 exhibited urease activity in vitro.
Verbatim
e0“In vitro assays showed that HY-01 exhibited plant growth-promoting activities (IAA production, denitrification, phosphate solubilization, and urease activity).”
Claim · model-written summary
The bacterial strain contained growth-promotion-related genes consistent with its assay activities.
- Taxon
- Priestia megaterium HY-01
Priestia megateriume1 - Outcome
- plant growth-promoting-related genese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genomic analyses also showed that the strain has plant growth-promoting-related genes that corroborate with the different PGP activities found in the assays.”
e1“we used the PGPR Priestia megaterium HY-01”
Claim · model-written summary
Hyang-yak-01 treatment improved Centella leaf length, weight and width.
- Taxon
- C. asiatica
Centella asiaticae0 - Treatment
- treatment with Hyang-yak-01e0
- Interactor
- Hyang-yak-01e0symbiont
- Outcome
- leaf length, leaf weight, leaf widthe0
- Direction
- improvede0
- Setting
- fielde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results suggest that treatment with Hyang-yak-01 not only improved the growth of C. asiatica (leaf length, leaf weight, leaf width, root length, root width, and chlorophyll content) but also influenced the rhizosphere microbiome.”
e1“This strain was subsequently used in field experiments”
Claim · model-written summary
Hyang-yak-01 treatment improved Centella root length and width.
- Taxon
- C. asiaticaCentella asiaticae0
- Treatment
- treatment with Hyang-yak-01e0
- Interactor
- Hyang-yak-01e0symbiont
- Outcome
- root length, root widthe0
- Direction
- improvede0
- Setting
- fielde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results suggest that treatment with Hyang-yak-01 not only improved the growth of C. asiatica (leaf length, leaf weight, leaf width, root length, root width, and chlorophyll content) but also influenced the rhizosphere microbiome.”
e1“This strain was subsequently used in field experiments”
Claim · model-written summary
Hyang-yak-01 treatment improved Centella chlorophyll content.
- Taxon
- C. asiaticaCentella asiaticae0
- Treatment
- treatment with Hyang-yak-01e0
- Interactor
- Hyang-yak-01e0symbiont
- Outcome
- chlorophyll contente0
- Direction
- improvede0
- Setting
- fielde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results suggest that treatment with Hyang-yak-01 not only improved the growth of C. asiatica (leaf length, leaf weight, leaf width, root length, root width, and chlorophyll content) but also influenced the rhizosphere microbiome.”
e1“This strain was subsequently used in field experiments”
Claim · model-written summary
The treated Centella rhizosphere had greater biodiversity than the control.
- Taxon
- C. asiaticaCentella asiaticae1
- Organ / stage
- rhizospheree2
- Treatment
- treatment with Hyang-yak-01e1
- Interactor
- Hyang-yak-01e1symbiont
- Outcome
- Biodiversitye0
- Direction
- highere0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biodiversity was higher in the treated group, and the bacterial composition was also different from the control group.”
e1“treatment with Hyang-yak-01 not only improved the growth of C. asiatica”
e2“we checked the rhizosphere microbiome between the treated and non-treated plots.”
Claim · model-written summary
Treatment changed bacterial composition in the Centella rhizosphere relative to control.
- Taxon
- C. asiaticaCentella asiaticae1
- Organ / stage
- rhizospheree2
- Treatment
- treatment with Hyang-yak-01e1
- Interactor
- Hyang-yak-01e1symbiont
- Outcome
- bacterial compositione0
- Qualifier
- differente0
- Comparator
- control groupe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biodiversity was higher in the treated group, and the bacterial composition was also different from the control group.”
e1“treatment with Hyang-yak-01 not only improved the growth of C. asiatica”
e2“we checked the rhizosphere microbiome between the treated and non-treated plots.”