Abstract
Agricultural industry is subjected to enormous environmental constraints, particularly due to salinity and drought. We evaluated the role of silicon (Si) in alleviating salinity and drought induced physio-hormonal changes in soybean grown in perlite. The plant growth attributes i.e., shoot length, plant fresh weight and dry weight parameters of soybean improved with elevated Si nutrition, while they decreased with NaCl and polyethylene glycol (PEG) application. The adverse effects of NaCl and PEG on plant growth were alleviated by adding 100 mg L -1 and 200 mg L -1 Si to salt and drought stressed treatments. It was observed that Si effectively mitigated the adverse effects of NaCl on soybean than that of PEG. The chlorophyll contents were found to be least affected as an insignificant increase was observed with Si application. Bioactive GA1 and GA4 contents of soybean leaves increased, when Si was added to control or stressed plants. Jasmonic acid (JA) contents sharply increased under salinity and drought stress but declined when the plants were supplemented with Si. Similarly, free salicylic acid (SA) level also increased with NaCl and PEG application. However, free SA level further increased with the addition of Si to salt treated plants, but decreased when Si was given to PEG treated plants. It was concluded that Si improves physio-hormonal attributes of soybean and mitigate adverse effects of salt and drought stress.
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Claims 14
Claim · model-written summary
Elevated silicon improved soybean shoot length and fresh and dry weight.
- Taxon
- soybean
Glycine maxe0 - Treatment
- elevated Si nutritione0
- Outcome
- shoot length, plant fresh weight and dry weighte0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant growth attributes i.e., shoot length, plant fresh weight and dry weight parameters of soybean improved with elevated Si nutrition”
Claim · model-written summary
NaCl decreased soybean shoot length and fresh and dry weight.
- Taxon
- soybeanGlycine maxe0
- Treatment
- NaCle0
- Outcome
- shoot length, plant fresh weight and dry weighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant growth attributes i.e., shoot length, plant fresh weight and dry weight parameters of soybean improved with elevated Si nutrition, while they decreased with NaCl and polyethylene glycol (PEG) application”
Claim · model-written summary
PEG decreased soybean shoot length and fresh and dry weight.
- Taxon
- soybeanGlycine maxe0
- Treatment
- polyethylene glycol (PEG) applicatione0
- Outcome
- shoot length, plant fresh weight and dry weighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant growth attributes i.e., shoot length, plant fresh weight and dry weight parameters of soybean improved with elevated Si nutrition, while they decreased with NaCl and polyethylene glycol (PEG) application”
Claim · model-written summary
Adding silicon alleviated salt stress effects on soybean growth.
- Taxon
- SOYBEAN (GLYCINE MAX L.)Glycine maxt0
- Treatment
- 100 mg L -1 and 200 mg L -1 Sie0
- Outcome
- plant growthe0
- Direction
- alleviatede0
- Comparator
- NaCle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The adverse effects of NaCl and PEG on plant growth were alleviated by adding 100 mg L -1 and 200 mg L -1 Si to salt and drought stressed treatments”
t0“SOYBEAN (GLYCINE MAX L.)”
Claim · model-written summary
Silicon mitigated NaCl effects on soybean more than PEG effects.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Sie0
- Outcome
- adverse effects of NaCl on soybeane0
- Direction
- mitigatede0
- Comparator
- PEGe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was observed that Si effectively mitigated the adverse effects of NaCl on soybean than that of PEG”
Claim · model-written summary
Silicon gave an insignificant increase in chlorophyll content.
- Taxon
- SOYBEAN (GLYCINE MAX L.)Glycine maxt0
- Treatment
- Si applicatione0
- Outcome
- chlorophyll contentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chlorophyll contents were found to be least affected as an insignificant increase was observed with Si application”
t0“SOYBEAN (GLYCINE MAX L.)”
Claim · model-written summary
Silicon increased leaf GA1 and GA4 in control or stressed soybean.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- leavese0
- Treatment
- Sie0
- Outcome
- Bioactive GA1 and GA4 contentse0
- Direction
- increasede0
- Comparator
- control or stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bioactive GA1 and GA4 contents of soybean leaves increased, when Si was added to control or stressed plants”
Claim · model-written summary
Salinity increased jasmonic acid in soybean.
- Taxon
- SOYBEAN (GLYCINE MAX L.)Glycine maxt0
- Treatment
- salinitye0
- Outcome
- Jasmonic acid (JA) contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Jasmonic acid (JA) contents sharply increased under salinity and drought stress”
t0“SOYBEAN (GLYCINE MAX L.)”
Claim · model-written summary
Drought increased jasmonic acid in soybean.
- Taxon
- SOYBEAN (GLYCINE MAX L.)Glycine maxt0
- Treatment
- drought stresse0
- Outcome
- Jasmonic acid (JA) contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Jasmonic acid (JA) contents sharply increased under salinity and drought stress”
t0“SOYBEAN (GLYCINE MAX L.)”
Claim · model-written summary
Silicon reduced jasmonic acid under stress.
- Taxon
- SOYBEAN (GLYCINE MAX L.)Glycine maxt0
- Treatment
- Sie0
- Outcome
- Jasmonic acid (JA) contentse0
- Direction
- declinede0
- Comparator
- salinity and drought stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Jasmonic acid (JA) contents sharply increased under salinity and drought stress but declined when the plants were supplemented with Si”
t0“SOYBEAN (GLYCINE MAX L.)”
Claim · model-written summary
NaCl increased free salicylic acid in soybean.
- Taxon
- SOYBEAN (GLYCINE MAX L.)Glycine maxt0
- Treatment
- NaCle0
- Outcome
- free salicylic acid (SA) levele0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“free salicylic acid (SA) level also increased with NaCl and PEG application”
t0“SOYBEAN (GLYCINE MAX L.)”
Claim · model-written summary
PEG increased free salicylic acid in soybean.
- Taxon
- SOYBEAN (GLYCINE MAX L.)Glycine maxt0
- Treatment
- PEGe0
- Outcome
- free salicylic acid (SA) levele0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“free salicylic acid (SA) level also increased with NaCl and PEG application”
t0“SOYBEAN (GLYCINE MAX L.)”
Claim · model-written summary
Silicon further increased free salicylic acid in salt-treated soybean.
- Taxon
- SOYBEAN (GLYCINE MAX L.)Glycine maxt0
- Treatment
- addition of Sie0
- Outcome
- free SA levele0
- Direction
- increasede0
- Comparator
- salt treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“free SA level further increased with the addition of Si to salt treated plants”
t0“SOYBEAN (GLYCINE MAX L.)”
Claim · model-written summary
Silicon decreased free salicylic acid in PEG-treated soybean.
- Taxon
- SOYBEAN (GLYCINE MAX L.)Glycine maxt0
- Treatment
- Sie0
- Outcome
- free SA levele0
- Direction
- decreasede0
- Comparator
- PEG treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“free SA level further increased with the addition of Si to salt treated plants, but decreased when Si was given to PEG treated plants”
t0“SOYBEAN (GLYCINE MAX L.)”
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