Abstract
The impact of short-term nitrogen fertilizer input on the structure and diversity of peanut rhizosphere microbiota (RM) at different growth stages (GSs) was explored in the southern paddy soil planting environment. Three levels of nitrogen were applied in the field: control (LN, 0 kg/hm 2 ), medium nitrogen (MN, 55.68 kg/hm 2 ), and high nitrogen (HN, 111.36 kg/hm 2 ). The rhizosphere soil was collected during four GSs for high-throughput sequencing and chemical properties analysis. The effect of nitrogen fertilizer application on peanut RM was minimal and was obvious only at the seedling stage. In the four peanut GSs, a significant increase in relative abundance was observed for only one operational taxonomic unit (OTU) of Nitrospira under HN conditions at the seedling stage and mature stage, while there was no consistent change in other OTUs. The difference in RM among different peanut GSs was greater than that caused by the amount of nitrogen fertilizer. This may be due to the substantial differences in soil chemical properties (especially alkali-hydrolyzable nitrogen, pH, and available potassium or total potassium) among peanut GSs, as these significantly affected the RM structure. These results are of great value to facilitate deeper understanding of the effect of nitrogen fertilizer on peanut RM structure.
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Claims 5
Claim · model-written summary
Nitrogen fertilizer had minimal effect on peanut rhizosphere bacterial diversity, obvious only at the seedling stage.
- Taxon
- peanut
Arachis hypogaeae0 - Organ / stage
- seedling stagee0
- Treatment
- nitrogen fertilizer applicatione0
- Outcome
- rhizosphere bacterial diversityt0
- Qualifier
- obvious only at the seedling stagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Nitrogen fertilizer amount has minimal effect on rhizosphere bacterial diversity”
e0“The effect of nitrogen fertilizer application on peanut RM was minimal and was obvious only at the seedling stage”
Claim · model-written summary
Under high nitrogen, relative abundance of one Nitrospira OTU increased significantly at the seedling and mature stages of peanut.
- Taxon
- peanutArachis hypogaeae1
- Organ / stage
- seedling stage and mature stagee1
- Treatment
- HN conditionse1
- Interactor
- NitrospiraNitrospirae1other
- Outcome
- relative abundancee1
- Direction
- increasee1
- Comparator
- control (LN, 0 kg/hm 2 )e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the four peanut GSs, a significant increase in relative abundance was observed for only one operational taxonomic unit (OTU) of Nitrospira under HN conditions at the seedling stage and mature stage, while there was no consistent change in other OTUs”
e2“Three levels of nitrogen were applied in the field: control (LN, 0 kg/hm 2 ), medium nitrogen (MN, 55.68 kg/hm 2 ), and high nitrogen (HN, 111.36 kg/hm 2 )”
Claim · model-written summary
Under high nitrogen, other rhizosphere OTUs showed no consistent change in peanut growth stages.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- HN conditionse1
- Outcome
- other OTUse1
- Direction
- no consistent changee1
- Comparator
- control (LN, 0 kg/hm 2 )e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the four peanut GSs, a significant increase in relative abundance was observed for only one operational taxonomic unit (OTU) of Nitrospira under HN conditions at the seedling stage and mature stage, while there was no consistent change in other OTUs”
e2“Three levels of nitrogen were applied in the field: control (LN, 0 kg/hm 2 ), medium nitrogen (MN, 55.68 kg/hm 2 ), and high nitrogen (HN, 111.36 kg/hm 2 )”
Claim · model-written summary
Differences in rhizosphere microbiota among peanut growth stages were greater than those caused by nitrogen fertilizer amount.
- Taxon
- peanutArachis hypogaeae3
- Treatment
- amount of nitrogen fertilizere3
- Outcome
- difference in RMe3
- Direction
- greatere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The difference in RM among different peanut GSs was greater than that caused by the amount of nitrogen fertilizer”
Claim · model-written summary
Soil chemical properties among peanut growth stages significantly affected the rhizosphere microbiota structure and may explain the stage differences.
- Taxon
- peanutArachis hypogaeae4
- Compound
- alkali-hydrolyzable nitrogen, pH, and available potassium or total potassiume4
- Outcome
- RM structuree4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“This may be due to the substantial differences in soil chemical properties (especially alkali-hydrolyzable nitrogen, pH, and available potassium or total potassium) among peanut GSs, as these significantly affected the RM structure”
The same questions in other papers
fertilization · soil: biology · Arachis hypogaea (peanut)Positive and negative results
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See all 13 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.