Abstract
BACKGROUND: Continuous cropping practices cause a severe decline in peanut yield. The aim of this study was to investigate the remediation effect of Serratia marcescens on continuously cropped peanut soil. A pot experiment was conducted under natural conditions to determine peanut agronomic indices, soil microorganism characteristics, soil enzyme activities and antagonism ability to typical pathogens at different growth stages. Four treatments were applied to red soil as follows: an active fermentation liquor of S. marcescens (RZ-21), an equivalent sterilized fermentation liquor (M), an equivalent fermentation medium (P) and distilled water (CK). RESULTS: S. marcescens significantly inhibited the two typical plant pathogens Fusarium oxysporum A1 and Ralstonia solanacearum B1 and reduced their populations in rhizosphere soil. The RZ-21 treatment significantly increased peanut yield, vine dry weight, root nodules and taproot length by 62.3, 33, 72 and 61.4% respectively, followed by the M treatment. The P treatment also increased root nodules and root length slightly. RZ-21 also enhanced the activities of soil urease, sucrase and hydrogen peroxidase at various stages. In addition, RZ-21 and M treatments increased the average population of soil bacteria and decreased the average population of fungi in the three critical peanut growth stages, except for M in the case of the fungal population at flowering, thus balancing the structure of the soil microorganism community. CONCLUSION: This is the first report of S. marcescens being applied to continuously cropped peanut soil. The results suggest that S. marcescens RZ-21 has the potential to improve the soil environment and agricultural products and thus allow the development of sustainable management practices.
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Claims 10
Claim · model-written summary
S. marcescens inhibited Fusarium oxysporum A1.
- Taxon
- peanut
Arachis hypogaeat0 - Treatment
- S. marcescense0
- Interactor
- Fusarium oxysporum A1
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=60)
Fusarium oxysporume0pathogen - Second interactor
- S. marcescens
Serratia marcescense0biocontrol_agent - Outcome
- Fusarium oxysporum A1e0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=500)
Verbatim
e0“S. marcescens significantly inhibited the two typical plant pathogens Fusarium oxysporum A1 and Ralstonia solanacearum B1 and reduced their populations in rhizosphere soil”
t0“continuously cropped peanut soil”
Claim · model-written summary
S. marcescens inhibited Ralstonia solanacearum B1.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- S. marcescense0
- Interactor
- Ralstonia solanacearum B1
Ralstonia solanacearume0pathogen - Second interactor
- S. marcescensSerratia marcescense0biocontrol_agent
- Outcome
- Ralstonia solanacearum B1e0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. marcescens significantly inhibited the two typical plant pathogens Fusarium oxysporum A1 and Ralstonia solanacearum B1 and reduced their populations in rhizosphere soil”
t0“continuously cropped peanut soil”
Claim · model-written summary
RZ-21 increased peanut yield by 62.3%.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- RZ-21 treatmente0
- Interactor
- RZ-21e0biocontrol_agent
- Outcome
- peanut yielde0
- Direction
- increasede0
- Value
- 62.3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RZ-21 treatment significantly increased peanut yield, vine dry weight, root nodules and taproot length by 62.3, 33, 72 and 61.4% respectively, followed by the M treatment”
t0“continuously cropped peanut soil”
Claim · model-written summary
RZ-21 increased vine dry weight by 33%.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- RZ-21 treatmente0
- Interactor
- RZ-21e0biocontrol_agent
- Outcome
- vine dry weighte0
- Direction
- increasede0
- Value
- 33e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RZ-21 treatment significantly increased peanut yield, vine dry weight, root nodules and taproot length by 62.3, 33, 72 and 61.4% respectively, followed by the M treatment”
t0“continuously cropped peanut soil”
Claim · model-written summary
RZ-21 increased root nodules by 72%.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- RZ-21 treatmente0
- Interactor
- RZ-21e0biocontrol_agent
- Outcome
- root nodulese0
- Direction
- increasede0
- Value
- 72e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RZ-21 treatment significantly increased peanut yield, vine dry weight, root nodules and taproot length by 62.3, 33, 72 and 61.4% respectively, followed by the M treatment”
t0“continuously cropped peanut soil”
Claim · model-written summary
RZ-21 increased taproot length by 61.4%%.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- RZ-21 treatmente0
- Interactor
- RZ-21e0biocontrol_agent
- Outcome
- taproot lengthe0
- Direction
- increasede0
- Value
- 61.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RZ-21 treatment significantly increased peanut yield, vine dry weight, root nodules and taproot length by 62.3, 33, 72 and 61.4% respectively, followed by the M treatment”
t0“continuously cropped peanut soil”
Claim · model-written summary
Fermentation medium slightly increased root nodules and root length.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- P treatmente0
- Outcome
- root nodules and root lengthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The P treatment also increased root nodules and root length slightly”
t0“continuously cropped peanut soil”
Claim · model-written summary
RZ-21 enhanced soil urease, sucrase and hydrogen peroxidase activities.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- RZ-21e0
- Outcome
- activities of soil urease, sucrase and hydrogen peroxidasee0
- Direction
- enhancede0
- Qualifier
- various stagese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RZ-21 also enhanced the activities of soil urease, sucrase and hydrogen peroxidase at various stages”
t0“continuously cropped peanut soil”
Claim · model-written summary
RZ-21 and M increased soil bacterial populations.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- RZ-21 and M treatmentse0
- Outcome
- average population of soil bacteriae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RZ-21 and M treatments increased the average population of soil bacteria”
t0“continuously cropped peanut soil”
Claim · model-written summary
RZ-21 and M decreased soil fungal populations, with an exception for M at flowering.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Me0
- Outcome
- average population of fungie0
- Direction
- decreasede0
- Qualifier
- except for M in the case of the fungal population at floweringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased the average population of fungi in the three critical peanut growth stages, except for M in the case of the fungal population at flowering”
t0“continuously cropped peanut soil”
The same questions in other papers
phosphorus · symbiosis · Arachis hypogaea (peanut)Positive and negative results
26 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
24 papers more in this group
See all 28 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.