Abstract
Plant growth promoting microorganisms and their derived compounds, such as cell-free supernatant (CFS), enhance plant growth under stressed and non stressed conditions. Such technology is sustainable and environmentally friendly, which is desirable amidst the climate change threat. The current study evaluated the effect of CFS obtained from Lactobacillus helveticus EL2006H on its ability to enhance mean percentage germination and mean radicle length of corn and soybean, as well as growth parameters of potato, using treatment formulations that consisted of 0.2 and 1.0% [v/v] L. helveticus EL2006H CFS concentrations and 100 mM NaCl and 150 mM NaCl levels. Results show that treatment with 100 mM NaCl lowered percentage germination of corn by 52.63%, at 72 h, and soybean by 50%, at 48 h. Treatment with 100 NaCl +0.2% EL2006H enhanced percentage germination of soybean by 44.37%, at 48 h, in comparison to that of the 100 mM NaCl control. One hundred mM NaCl lowered radicle length of corn and soybean by 38.58 and 36.43%, respectively. Treatment with 100 Mm NaCl +1.0% EL2006H significantly increased radicle length of corn by 23.04%. Treatment with 100 mM NaCl +0.2% EL2006H significantly increased photosynthetic rate, leaf greenness and fresh weight of potato. Increasing NaCl concentration to 150 NaCl lowered the effectiveness of the 0.2% EL2006H CFS on the same growth variables of potato. In general, the lower CFS concentration of 0.2% was more efficient at enhancing germination in soybean while the higher concentration of 1.0% was more efficient at enhancing radicle length of corn. There was an observed variation in the effectiveness of L. helveticus EL2006H CFS across the different CFS concentrations, NaCl levels and crop species studied. In conclusion, based on findings of this study, CFS obtained from L. helveticus can be used as a bio stimulant to enhance growth of corn, soybean and potato. However, further studies need to be conducted, for validation, especially under field conditions, for commercial application.
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Claims 8
Claim · model-written summary
100 mM NaCl reduced corn germination by 52.63% at 72 h.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- 100 mM NaCle0
- Outcome
- percentage germinatione0
- Direction
- lowerede0
- Value
- 52.63%e0
- Qualifier
- at 72 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment with 100 mM NaCl lowered percentage germination of corn by 52.63%, at 72 h”
Claim · model-written summary
100 mM NaCl reduced soybean germination by 50% at 48 h.
- Taxon
- soybean
Glycine maxe0 - Treatment
- 100 mM NaCle0
- Outcome
- percentage germinatione0
- Direction
- lowerede0
- Value
- 50%e0
- Qualifier
- at 48 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results show that treatment with 100 mM NaCl lowered percentage germination of corn by 52.63%, at 72 h, and soybean by 50%, at 48 h”
Claim · model-written summary
0.2% EL2006H with 100 mM NaCl raised soybean germination by 44.37% against salt control.
- Taxon
- soybeanGlycine maxe0
- Treatment
- 100 NaCl +0.2% EL2006He0
- Outcome
- percentage germinatione0
- Direction
- enhancede0
- Value
- 44.37%e0
- Comparator
- 100 mM NaCl controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with 100 NaCl +0.2% EL2006H enhanced percentage germination of soybean by 44.37%, at 48 h, in comparison to that of the 100 mM NaCl control”
Claim · model-written summary
100 mM NaCl reduced corn radicle length by 38.58%.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- One hundred mM NaCle0
- Outcome
- radicle lengthe0
- Direction
- lowerede0
- Value
- 38.58e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One hundred mM NaCl lowered radicle length of corn and soybean by 38.58 and 36.43%, respectively”
Claim · model-written summary
100 mM NaCl reduced soybean radicle length by 36.43%.
- Taxon
- soybeanGlycine maxe0
- Treatment
- One hundred mM NaCle0
- Outcome
- radicle lengthe0
- Direction
- lowerede0
- Value
- 36.43%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One hundred mM NaCl lowered radicle length of corn and soybean by 38.58 and 36.43%, respectively”
Claim · model-written summary
1.0% EL2006H with salt increased corn radicle length by 23.04%.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- 100 Mm NaCl +1.0% EL2006He0
- Outcome
- radicle lengthe0
- Direction
- increasede0
- Value
- 23.04%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with 100 Mm NaCl +1.0% EL2006H significantly increased radicle length of corn by 23.04%”
Claim · model-written summary
0.2% EL2006H with salt increased potato photosynthetic rate, greenness and fresh weight.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- 100 mM NaCl +0.2% EL2006He0
- Outcome
- photosynthetic rate, leaf greenness and fresh weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with 100 mM NaCl +0.2% EL2006H significantly increased photosynthetic rate, leaf greenness and fresh weight of potato”
Claim · model-written summary
At 150 NaCl, 0.2% CFS was less effective for potato growth variables.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- 150 NaCle0
- Outcome
- effectiveness of the 0.2% EL2006H CFSe0
- Direction
- lowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing NaCl concentration to 150 NaCl lowered the effectiveness of the 0.2% EL2006H CFS on the same growth variables of potato”
The same questions in other papers
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- no effect
- negative
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See all 58 papers →sodium chloride · growth · Zea mays (maize)Results differ
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See all 112 papers →sodium chloride · physiology: photosynthesis · Solanum tuberosum (potato)Positive and negative results
1 in the opposite direction
- negative
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.