Abstract
The physiological and molecular responses of six strains of Streptomyces sp. (CAI-13, CAI-85, CAI-93, CAI-140, CAI-155 and KAI-180), with their proven potential for plant growth-promotion (PGP) in rice were studied to understand the mechanisms causing the beneficial effects. In this investigation, those six strains were evaluated for their PGP capabilities in chickpea in the 2012-13 and 2013-14 post-rainy seasons. All of the Streptomyces sp. strains exhibited enhanced nodule number, nodule weight, root weight and shoot weight at 30 days after sowing (DAS) and pod number, pod weight, leaf area, leaf weight and stem weight at 60 DAS in both seasons over the un-inoculated control. At chickpea crop maturity, the Streptomyces strains had enhanced stover yield, grain yield, total dry matter, pod weight, seed number and seed weight in both seasons over the un-inoculated control. In the rhizosphere, at crop maturity, the Streptomyces strains also significantly enhanced soil biological and mineral nutrient traits including microbial biomass carbon, dehydrogenase activity, total nitrogen, available phosphorous and organic carbon in both seasons over the un-inoculated control. Of the six strains of Streptomyces sp., CAI-85, CAI-93 and KAI-180 were found superior to CAI-155, CAI-140 and CAI-13, in terms of their effects on root and shoot development, nodule formation and crop productivity. Scanning electron microscopy micrographs had revealed the success in colonization of the chickpea roots by all six strains. This investigation further confirms the broad-spectrum of PGP activities by the selected Streptomyces sp.
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Claims 10
Claim · model-written summary
All Streptomyces strains increased chickpea nodule number, nodule weight and root weight at 30 DAS in both seasons.
- Taxon
- chickpea
Cicer arietinumt0 - Treatment
- Streptomyces sp. strainse0
- Interactor
- Streptomyces sp.
Streptomyces sp.e0symbiont - Outcome
- nodule number, nodule weight, root weighte0
- Direction
- enhancede0
- Comparator
- un-inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All of the Streptomyces sp. strains exhibited enhanced nodule number, nodule weight, root weight and shoot weight at 30 days after sowing (DAS) and pod number, pod weight, leaf area, leaf weight and stem weight at 60 DAS in both seasons over the un-inoculated control”
t0“chickpea”
Claim · model-written summary
All Streptomyces strains increased chickpea shoot weight at 30 DAS in both seasons.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- Streptomyces sp. strainse0
- Interactor
- Streptomyces sp.Streptomyces sp.e0symbiont
- Outcome
- shoot weighte0
- Direction
- enhancede0
- Comparator
- un-inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All of the Streptomyces sp. strains exhibited enhanced nodule number, nodule weight, root weight and shoot weight at 30 days after sowing (DAS) and pod number, pod weight, leaf area, leaf weight and stem weight at 60 DAS in both seasons over the un-inoculated control”
t0“chickpea”
Claim · model-written summary
The strains increased pod number, pod weight and leaf area at 60 DAS.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- Streptomyces sp.t0
- Interactor
- Streptomyces sp.Streptomyces sp.t0symbiont
- Outcome
- pod number, pod weight, leaf areae0
- Comparator
- un-inoculated controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pod number, pod weight, leaf area, leaf weight and stem weight at 60 DAS in both seasons over the un-inoculated control”
t0“Streptomyces sp. on growth promotion and grain yield in chickpea”
Claim · model-written summary
The strains increased leaf weight and stem weight at 60 DAS.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- Streptomyces sp.t0
- Interactor
- Streptomyces sp.Streptomyces sp.t0symbiont
- Outcome
- leaf weight and stem weighte0
- Comparator
- un-inoculated controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pod number, pod weight, leaf area, leaf weight and stem weight at 60 DAS in both seasons over the un-inoculated control”
t0“Streptomyces sp. on growth promotion and grain yield in chickpea”
Claim · model-written summary
At maturity, the strains increased stover yield, grain yield and total dry matter.
- Taxon
- chickpeaCicer arietinume0
- Treatment
- Streptomyces strainse0
- Interactor
- StreptomycesStreptomycese0symbiont
- Outcome
- stover yield, grain yield, total dry mattere0
- Direction
- enhancede0
- Comparator
- un-inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At chickpea crop maturity, the Streptomyces strains had enhanced stover yield, grain yield, total dry matter, pod weight, seed number and seed weight in both seasons over the un-inoculated control”
Claim · model-written summary
At maturity, the strains increased pod weight, seed number and seed weight.
- Taxon
- chickpeaCicer arietinume0
- Treatment
- Streptomyces strainse0
- Interactor
- StreptomycesStreptomycese0symbiont
- Outcome
- pod weight, seed number and seed weighte0
- Direction
- enhancede0
- Comparator
- un-inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At chickpea crop maturity, the Streptomyces strains had enhanced stover yield, grain yield, total dry matter, pod weight, seed number and seed weight in both seasons over the un-inoculated control”
Claim · model-written summary
The strains significantly increased rhizosphere microbial biomass carbon, dehydrogenase activity and total nitrogen.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- Streptomyces strainse0
- Interactor
- StreptomycesStreptomycese0symbiont
- Outcome
- microbial biomass carbon, dehydrogenase activity, total nitrogene0
- Direction
- enhancede0
- Comparator
- un-inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Streptomyces strains also significantly enhanced soil biological and mineral nutrient traits including microbial biomass carbon, dehydrogenase activity, total nitrogen, available phosphorous and organic carbon in both seasons over the un-inoculated control”
t0“chickpea”
Claim · model-written summary
The strains significantly increased rhizosphere available phosphorous and organic carbon.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- Streptomyces strainse0
- Interactor
- StreptomycesStreptomycese0symbiont
- Outcome
- available phosphorous and organic carbone0
- Direction
- enhancede0
- Comparator
- un-inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Streptomyces strains also significantly enhanced soil biological and mineral nutrient traits including microbial biomass carbon, dehydrogenase activity, total nitrogen, available phosphorous and organic carbon in both seasons over the un-inoculated control”
t0“chickpea”
Claim · model-written summary
CAI-85, CAI-93 and KAI-180 outperformed the other three strains for root and shoot development, nodule formation and productivity.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- CAI-85, CAI-93 and KAI-180e0
- Interactor
- Streptomyces sp.Streptomyces sp.t0symbiont
- Outcome
- root and shoot development, nodule formation and crop productivitye0
- Direction
- superiore0
- Comparator
- CAI-155, CAI-140 and CAI-13e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CAI-85, CAI-93 and KAI-180 were found superior to CAI-155, CAI-140 and CAI-13, in terms of their effects on root and shoot development, nodule formation and crop productivity”
t0“Streptomyces sp. on growth promotion and grain yield in chickpea”
Claim · model-written summary
All six strains colonized chickpea roots.
- Taxon
- chickpeaCicer arietinume0
- Interactor
- Streptomyces sp.Streptomyces sp.t0symbiont
- Outcome
- colonization of the chickpea rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Scanning electron microscopy micrographs had revealed the success in colonization of the chickpea roots by all six strains”
t0“Streptomyces sp. on growth promotion and grain yield in chickpea”
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See all 7 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.