Abstract
Agricultural practices involving synthetic inputs significantly impact soil microflora and nutrient cycling, affecting soil health and fertility. The challenges are exacerbated by changing climatic conditions, with drought having the most significant impact. Microbial communities and soil functions can be enhanced through plant growth-promoting rhizobacteria (PGPR), which have emerged as a reliable and sustainable alternative. Studies recognize PGPR for its diverse roles in plant growth promotion and disease suppression, but there is a lack of studies on its effects on soil conditions. This study examined the influences of selected PGPR viz Enterobacter cloacae BHUSR1, Serratia marcescens BHUSR2, and Klebsiella aerogenes BHUSR3 on soil nutrient mobilization and microbial communities of rhizospheric soils. Seeds of Avena sativa were bioprimed with the selected PGPR before sowing. The fields were then exposed to two levels of water stress, irrigating one plot at 7 days and the other plot at 10 days intervals. Rhizospheric soil analysis of fully mature crops was done for pH, EC, moisture, nutrient content and microbial flora. It was observed that biopriming oat seeds with selected PGPR altered soil pH and electrical conductivity. Significant improvements in the soil moisture percentage and available nutrients except nitrate were recorded in the oat rhizosphere. While the bacterial counts significantly improved even in the drought-exposed fields, a decrease in fungal count was recorded in response to the PGPR. Among the selected PGPR, E . cloaceae BHUSR1 was found to be the most influential in supporting plant growth by mobilizing soil nutrients and retaining moisture in the rhizospheric region under simulated drought conditions.
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 5
Claim · model-written summary
Biopriming oat seeds with PGPR altered soil pH and electrical conductivity.
- Taxon
- oat
Avena sativae1 - Treatment
- biopriming oat seeds with selected PGPRe1
- Interactor
- PGPRe1symbiont
- Outcome
- soil pH and electrical conductivitye1
- Direction
- alterede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“biopriming oat seeds with selected PGPR altered soil pH and electrical conductivity”
Claim · model-written summary
PGPR biopriming improved soil moisture percentage and available nutrients, except nitrate, in the oat rhizosphere.
- Taxon
- Avena sativaAvena sativae0
- Organ / stage
- rhizospheree2
- Treatment
- bioprimed with the selected PGPRe0
- Interactor
- PGPRe0symbiont
- Outcome
- soil moisture percentage and available nutrientse2
- Direction
- improvementse2
- Qualifier
- except nitratee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of Avena sativa were bioprimed with the selected PGPR before sowing”
e2“Significant improvements in the soil moisture percentage and available nutrients except nitrate were recorded in the oat rhizosphere”
Claim · model-written summary
PGPR biopriming significantly improved bacterial counts in drought-exposed oat fields.
- Taxon
- Avena sativaAvena sativae0
- Treatment
- bioprimed with the selected PGPRe0
- Interactor
- PGPRe0symbiont
- Outcome
- bacterial countse3
- Direction
- improvede3
- Setting
- drought-exposed fieldse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of Avena sativa were bioprimed with the selected PGPR before sowing”
e3“While the bacterial counts significantly improved even in the drought-exposed fields”
Claim · model-written summary
Fungal count decreased in response to PGPR in oat rhizosphere.
- Taxon
- Avena sativaAvena sativae0
- Treatment
- PGPRe4
- Interactor
- PGPRe4symbiont
- Outcome
- fungal counte4
- Direction
- decreasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of Avena sativa were bioprimed with the selected PGPR before sowing”
e4“a decrease in fungal count was recorded in response to the PGPR”
Claim · model-written summary
Enterobacter cloacae BHUSR1 was the most influential PGPR in supporting oat growth by mobilizing soil nutrients and retaining moisture under simulated drought.
- Taxon
- Avena sativaAvena sativae0
- Treatment
- E . cloaceae BHUSR1e5
- Interactor
- E . cloaceae BHUSR1e5symbiont
- Outcome
- mobilizing soil nutrients and retaining moisturee5
- Direction
- most influentiale5
- Qualifier
- under simulated drought conditionse5
- Comparator
- Serratia marcescens BHUSR2e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of Avena sativa were bioprimed with the selected PGPR before sowing”
e5“Among the selected PGPR, E . cloaceae BHUSR1 was found to be the most influential in supporting plant growth by mobilizing soil nutrients and retaining moisture in the rhizospheric region under simulated drought conditions”
e6“Enterobacter cloacae BHUSR1, Serratia marcescens BHUSR2, and Klebsiella aerogenes BHUSR3”
The same questions in other papers
inoculation · soil: biology · Avena sativa (oats)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
inoculation · nutrient: content · Avena sativa (oats)Positive and negative results
10 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
8 papers more in this group
See all 12 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.