Abstract
Plant growth-promoting bacteria (PGPB) are bacteria that can enhance protect native plants from abiotic stresses including drought. The inoculation of these PGPB into crop forage plants may increase productivity helping to suppress its growing demand in semiarid regions. The present paper aims to evaluate the Sorghum bicolor L. morphogenic characteristics and growth inoculated with native bacterial isolates from the Brazilian semiarid region under drought conditions. The endophytic bacteria isolated from root nodules of native leguminous plants named Mimosa tenuiflora (isolates – MTBV77, MTP78, MTBV12), Desmanthus pernambucanus (isolates – DPP1) and Mimosa caesalpiniifolia (isolate – MCLR34) were all presumably identified as rhizobia by performing the Polymerase Chain Reaction duplex amplification technique using primers that amplify the nifH and nodC genes. The seeds and roots of sorghum seedlings were inoculated with bacterial isolates. The plants were cultivated in pots under favorable water conditions (80% of the available water) and dry conditions (40% of the available water). The inoculation with bacterial isolates increased emission, elongation and length of the S. bicolor leaves, as well as increased its stem elongation, height, and shoot dry-matter content. However, the magnitude of the effects varied according to the imposed water regime. Thus, rhizobacteria from root nodules of Brazilian native legumes have the potential to promote plant growth. The bacterial isolates DPP1 and MTBV77 attenuate the effects of water stress and promote S. bicolor growth under drought conditions and are therefore promising for the use as an inoculant for S. bicolor sustainable cultivation to forage purposes.
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Claims 7
Claim · model-written summary
The native bacterial isolates were presumptively identified as rhizobia.
- Taxon
- Mimosa tenuiflora
Mimosa tenuiflorae0 - Gene
- nifH and nodC genese0
- Outcome
- presumably identified as rhizobiae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum bicolor L.”
e0“The endophytic bacteria isolated from root nodules of native leguminous plants named Mimosa tenuiflora (isolates – MTBV77, MTP78, MTBV12), Desmanthus pernambucanus (isolates – DPP1) and Mimosa caesalpiniifolia (isolate – MCLR34) were all presumably identified as rhizobia by performing the Polymerase Chain Reaction duplex amplification technique using primers that amplify the nifH and nodC genes”
Claim · model-written summary
Bacterial inoculation increased sorghum leaf emission, elongation and length.
- Taxon
- S. bicolor
Sorghum bicolore0 - Treatment
- inoculation with bacterial isolatese0
- Interactor
- bacterial isolatese0symbiont
- Outcome
- emission, elongation and length of the S. bicolor leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inoculation with bacterial isolates increased emission, elongation and length of the S. bicolor leaves”
Claim · model-written summary
Bacterial inoculation increased sorghum stem elongation, height and shoot dry matter.
- Taxon
- S. bicolorSorghum bicolore0
- Treatment
- inoculation with bacterial isolatese0
- Interactor
- bacterial isolatese0symbiont
- Outcome
- stem elongation, height, and shoot dry-matter contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inoculation with bacterial isolates increased emission, elongation and length of the S. bicolor leaves, as well as increased its stem elongation, height, and shoot dry-matter content”
Claim · model-written summary
Inoculation effect sizes varied with the water regime.
- Taxon
- Sorghum bicolor L.Sorghum bicolort0
- Treatment
- imposed water regimee0
- Outcome
- magnitude of the effectse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum bicolor L.”
e0“However, the magnitude of the effects varied according to the imposed water regime.”
Claim · model-written summary
DPP1 attenuated water stress and promoted sorghum growth under drought.
- Taxon
- S. bicolorSorghum bicolore0
- Treatment
- DPP1e0
- Interactor
- DPP1e0symbiont
- Outcome
- S. bicolor growthe0
- Direction
- promotee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bacterial isolates DPP1 and MTBV77 attenuate the effects of water stress and promote S. bicolor growth under drought conditions”
Claim · model-written summary
MTBV77 attenuated water stress and promoted sorghum growth under drought.
- Taxon
- S. bicolorSorghum bicolore0
- Treatment
- MTBV77e0
- Interactor
- MTBV77e0symbiont
- Outcome
- S. bicolor growthe0
- Direction
- promotee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bacterial isolates DPP1 and MTBV77 attenuate the effects of water stress and promote S. bicolor growth under drought conditions”
Claim · model-written summary
DPP1 is proposed as an inoculant for sustainable sorghum forage cultivation.
- Taxon
- S. bicolorSorghum bicolore0
- Interactor
- DPP1e0symbiont
- Outcome
- promising for the use as an inoculant for S. bicolor sustainable cultivation to forage purposese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bacterial isolates DPP1 and MTBV77 attenuate the effects of water stress and promote S. bicolor growth under drought conditions and are therefore promising for the use as an inoculant for S. bicolor sustainable cultivation to forage purposes”
The same questions in other papers
inoculation · quality: grain · Sorghum bicolor (sorghum)Positive and negative results
1 in the opposite direction
- no effect
inoculation · growth · Sorghum bicolor (sorghum)Results agree
24 papers in the same direction as this paper
- positive
- positive
- positive
21 papers more in this group
See all 25 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.