Abstract
Interaction of plant growth promoting microorganisms (PGPMs) with plants involves interplay at physical, physiological and molecular levels. Proliferation and root colonization of PGPMs manipulate the rhizosphere to optimize plant functions. This benefits plant by nutrient enrichment and induction of plant vigor and defense system. The present work aims to decipher the rhizosphere modulations promoted under different fertilization regimes by an organic acid producing Trichoderma koningiopsis strain (NBRI-PR5). Chickpea was selected as the host plant for the study since it responds well to the application of in/organic fertilizers and PGPMs. Microbial communities associated with the rhizosphere were studied by determining culturable population of heterogeneous microflora, and rhizosphere functions were studied by determining the soil enzyme activities and HPLC profiles of organic acids in root exudates. Application of NBRI-PR5 induced changes in rhizosphere in consent with the amendments. The changes observed in microbial populations were found to be associated with the rhizosphere enzymes. The inhibitory effect of chemical fertilizers on rhizosphere microflora was evident from least bacterial CFU observed in the NPK treatments. No detection of alkaline phosphatase enzyme in all the treatments with NBRI-PR5, with organic or inorganic amendments evidently represents the acidified rhizosphere. Similarly, an opposite trend in DHA and protease enzyme activities in the rhizosphere of FYM and FYM+PR5 treated plants showed that NBRI-PR5 had reframed microbial activities to facilitate nutrient uptake in plants rather than fix in the microbes. It is concluded from the study that NBRI-PR5 fatefully modulates rhizosphere activities, specific to different fertilization regimes by varying the enzyme activities to maximize the utilization of available nutrients.
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 6
Claim · model-written summary
NBRI-PR5 changed the rhizosphere in relation to amendments.
- Taxon
- Chickpea
Cicer arietinumt0 - Treatment
- NBRI-PR5e0
- Outcome
- changes in rhizospheree0
- Direction
- changese0
- Comparator
- amendmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of NBRI-PR5 induced changes in rhizosphere in consent with the amendments.”
t0“Chickpea”
Claim · model-written summary
Microbial population changes were associated with rhizosphere enzymes.
- Taxon
- ChickpeaCicer arietinumt0
- Outcome
- changes observed in microbial populationse0
- Qualifier
- rhizosphere enzymese0
- Setting
- rhizospheree0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The changes observed in microbial populations were found to be associated with the rhizosphere enzymes.”
t0“Chickpea”
Claim · model-written summary
NPK treatments had the lowest bacterial CFU, indicating inhibition by chemical fertilizers.
- Taxon
- ChickpeaCicer arietinumt0
- Treatment
- NPK treatmentse0
- Outcome
- bacterial CFUe0
- Direction
- leaste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibitory effect of chemical fertilizers on rhizosphere microflora was evident from least bacterial CFU observed in the NPK treatments.”
t0“Chickpea”
Claim · model-written summary
Alkaline phosphatase was undetected across NBRI-PR5 treatments with organic or inorganic amendments.
- Taxon
- ChickpeaCicer arietinumt0
- Gene
- alkaline phosphatasee0
- Outcome
- No detection of alkaline phosphatase enzymee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No detection of alkaline phosphatase enzyme in all the treatments with NBRI-PR5, with organic or inorganic amendments evidently represents the acidified rhizosphere.”
t0“Chickpea”
Claim · model-written summary
DHA and protease activity showed opposite trends between FYM and FYM+PR5 treatments.
- Taxon
- ChickpeaCicer arietinumt0
- Treatment
- FYM+PR5e0
- Outcome
- DHA and protease enzyme activitiese0
- Direction
- opposite trende0
- Comparator
- FYMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an opposite trend in DHA and protease enzyme activities in the rhizosphere of FYM and FYM+PR5 treated plants”
t0“Chickpea”
Claim · model-written summary
Authors interpreted NBRI-PR5 as modulating rhizosphere enzymes to maximize nutrient use under different fertilization regimes.
- Taxon
- ChickpeaCicer arietinumt0
- Treatment
- NBRI-PR5e0
- Outcome
- utilization of available nutrientse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is concluded from the study that NBRI-PR5 fatefully modulates rhizosphere activities, specific to different fertilization regimes by varying the enzyme activities to maximize the utilization of available nutrients.”
t0“Chickpea”
The same questions in other papers
fertilization · disease · Cicer arietinum (chickpea)Positive and negative results
3 papers in the same direction as this paper · 13 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 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.