Abstract
Seven strains of Streptomyces spp.: BCA-546 (KF770898), BCA-659 (KF770889), BCA-667 (KF770888), BCA-689 (KF770899), BCA-698 (KF770900), CAI-133 (KF770895) and CAI-8 (KF770890), reported earlier to produce biocontrol and plant growth-promoting (PGP) substances were further evaluated for PGP traits in sorghum under greenhouse and field conditions. Under greenhouse conditions, plant height, leaf area and weight, root length and weight, shoot weight, panicle weight and seed weight were enhanced in plots inoculated with Streptomyces spp. than the un-inoculated control at 30, 60 days after sowing (DAS) and at final harvest. Similarly, treatment with Streptomyces spp. led to growth and yield enhancements under field conditions at 60 DAS and final harvest. Among the seven strains, BCA-698, BCA-689, BCA-546 and BCA-659 were found to be superior for PGP. Under field conditions, at both flowering and harvest stages, the soil organic C, available P and total N were also found to improve with Streptomyces spp. treatments. A scanning electron microscopic study showed extensive root colonization of sorghum. The gene expression profiles revealed up-regulation of β-1,3-glucanase, indole acetic acid (IAA) and siderophore genes. Based on the present findings, the seven selected Streptomyces strains could be employed to enhance plant growth and yield in sorghum. Key words: Gene expression, plant growth-promotion, scanning electron microscopy, sorghum, Streptomyces spp.
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Claims 9
Claim · model-written summary
Streptomyces inoculation enhanced sorghum growth and yield traits in the greenhouse.
- Treatment
- inoculated with Streptomyces spp.e0
- Interactor
- Streptomyces spp.
Streptomycese0symbiont - Outcome
- plant height, leaf area and weighte0
- Direction
- enhancede0
- Comparator
- un-inoculated controle0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height, leaf area and weight, root length and weight, shoot weight, panicle weight and seed weight were enhanced in plots inoculated with Streptomyces spp. than the un-inoculated control”
t0“sorghum”
Claim · model-written summary
Streptomyces inoculation enhanced sorghum root and shoot traits.
- Treatment
- inoculated with Streptomyces spp.e0
- Interactor
- Streptomyces spp.Streptomycese0symbiont
- Outcome
- root length and weight, shoot weighte0
- Direction
- enhancede0
- Comparator
- un-inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root length and weight, shoot weight, panicle weight and seed weight were enhanced in plots inoculated with Streptomyces spp. than the un-inoculated control”
t0“sorghum”
Claim · model-written summary
Streptomyces inoculation enhanced sorghum panicle and seed weight.
- Treatment
- inoculated with Streptomyces spp.e0
- Interactor
- Streptomyces spp.Streptomycese0symbiont
- Outcome
- panicle weight and seed weighte0
- Direction
- enhancede0
- Comparator
- un-inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“panicle weight and seed weight were enhanced in plots inoculated with Streptomyces spp. than the un-inoculated control”
t0“sorghum”
Claim · model-written summary
Streptomyces treatment enhanced sorghum growth and yield in the field.
- Treatment
- treatment with Streptomyces spp.e0
- Interactor
- Streptomyces spp.Streptomycese0symbiont
- Outcome
- growth and yielde0
- Direction
- enhancementse0
- Setting
- field conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment with Streptomyces spp. led to growth and yield enhancements under field conditions”
t0“sorghum”
Claim · model-written summary
Four strains were superior for growth promotion.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BCA-698, BCA-689, BCA-546 and BCA-659 were found to be superior for PGP”
t0“sorghum”
Claim · model-written summary
Streptomyces treatment improved field soil organic C, available P and total N.
- Treatment
- Streptomyces spp. treatmentse0
- Interactor
- Streptomyces spp.Streptomycese0symbiont
- Outcome
- soil organic C, available P and total Ne0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil organic C, available P and total N were also found to improve with Streptomyces spp. treatments”
t0“sorghum”
Claim · model-written summary
Microscopy showed extensive sorghum root colonization by Streptomyces.
- Organ / stage
- roote0
- Interactor
- Streptomyces spp.Streptomycest0symbionte0
- Outcome
- extensive root colonizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A scanning electron microscopic study showed extensive root colonization of sorghum”
t0“Streptomyces spp.”
Claim · model-written summary
Gene expression profiles showed up-regulation of β-1,3-glucanase, IAA and siderophore genes.
- Gene
- β-1,3-glucanasee0
- Outcome
- up-regulation of β-1,3-glucanase, indole acetic acid (IAA) and siderophore genese0
- Direction
- up-regulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene expression profiles revealed up-regulation of β-1,3-glucanase, indole acetic acid (IAA) and siderophore genes”
t0“sorghum”
Claim · model-written summary
The authors propose the seven strains to improve sorghum growth and yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seven selected Streptomyces strains could be employed to enhance plant growth and yield in sorghum”
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See all 76 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.