Abstract
Abstract Silicon (Si) has attracted substantial attention because of its beneficial effect on plants during abiotic stress, including stress due to arsenic (As). We here report that priming rice seeds with As and Si together, helped the plant to sustain As stress for longer period. We examined Si induced tolerance against As in rice seedlings at short (7 d) and long (15 d) exposure periods under As (III) and Si treatments since their germinating stage. Results showed that the expression of As (III) transporter genes OsLsi1 , OsLsi2 and OsLsi6 was more in As (III) + Si treatment as compared to control and Si treatment, but lower than As (III) alone treatments. The gene expression was maximum in shoot and root at 15 d over 7 d under both As (III) and As (III) + Si treatment, which ultimately leads to decreased accumulation of As in the presence of Si. Morphological characters, antioxidant capacity, oxidative stress marker (MDA), stress modulators (cysteine, proline), and enzymes related with ascorbate-glutathione cycle significantly altered during As (III) + Si treatment at both exposure periods. Further, macro and micronutrient contents also improved with Si, and differentially regulated 12 key genes ( NR , NiR , AMT , NR , GS , GOGAT , PT , PHT1 , PHT2 , APase , KAT1 and HAK10) related with NPK transport and utilization. Results highlight that Si priming of seeds along with As (III) influences growth positively of As-stressed rice.
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Claims 10
Claim · model-written summary
Combined arsenic and silicon seed priming helped rice sustain arsenic stress longer.
- Taxon
- rice
Oryza sativae0 - Treatment
- priming rice seeds with As and Si togethere0
- Outcome
- sustain As stresse0
- Direction
- longere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming rice seeds with As and Si together, helped the plant to sustain As stress for longer period”
Claim · model-written summary
OsLsi1, OsLsi2 and OsLsi6 expression under arsenic plus silicon exceeded control and silicon alone, but was below arsenic alone.
- Taxon
- riceOryza sativat0
- Treatment
- As (III) + Si treatmente0
- Gene
- OsLsi1 , OsLsi2 and OsLsi6e0
- Outcome
- expression of As (III) transporter genese0
- Direction
- moree0
- Comparator
- control and Si treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e0“expression of As (III) transporter genes OsLsi1 , OsLsi2 and OsLsi6 was more in As (III) + Si treatment as compared to control and Si treatment, but lower than As (III) alone treatments”
Claim · model-written summary
Transporter gene expression in shoots and roots was highest at 15 days relative to 7 days under arsenic alone or arsenic plus silicon.
- Taxon
- riceOryza sativat0
- Organ / stage
- shoot and roote0
- Treatment
- As (III) and As (III) + Si treatmente0
- Outcome
- gene expressione0
- Direction
- maximume0
- Value
- 15 de0
- Comparator
- 7 de0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e0“The gene expression was maximum in shoot and root at 15 d over 7 d under both As (III) and As (III) + Si treatment”
Claim · model-written summary
Silicon reduced arsenic accumulation in rice.
- Taxon
- riceOryza sativat0
- Treatment
- Sie0
- Outcome
- accumulation of Ase0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e0“decreased accumulation of As in the presence of Si”
Claim · model-written summary
Arsenic plus silicon significantly altered morphological characters and antioxidant capacity.
- Taxon
- riceOryza sativat0
- Treatment
- As (III) + Si treatmente0
- Outcome
- Morphological characters, antioxidant capacitye0
- Qualifier
- both exposure periodse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e0“Morphological characters, antioxidant capacity, oxidative stress marker (MDA), stress modulators (cysteine, proline), and enzymes related with ascorbate-glutathione cycle significantly altered during As (III) + Si treatment at both exposure periods”
Claim · model-written summary
Arsenic plus silicon significantly altered MDA, cysteine and proline.
- Taxon
- riceOryza sativat0
- Treatment
- As (III) + Si treatmente0
- Outcome
- oxidative stress marker (MDA), stress modulators (cysteine, proline)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e0“oxidative stress marker (MDA), stress modulators (cysteine, proline), and enzymes related with ascorbate-glutathione cycle significantly altered during As (III) + Si treatment at both exposure periods”
Claim · model-written summary
Arsenic plus silicon significantly altered enzymes of the ascorbate-glutathione cycle.
- Taxon
- riceOryza sativat0
- Treatment
- As (III) + Si treatmente0
- Outcome
- enzymes related with ascorbate-glutathione cyclee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e0“enzymes related with ascorbate-glutathione cycle significantly altered during As (III) + Si treatment at both exposure periods”
Claim · model-written summary
Silicon improved macro and micronutrient contents.
- Taxon
- riceOryza sativat0
- Treatment
- Sie0
- Outcome
- macro and micronutrient contentse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e0“macro and micronutrient contents also improved with Si”
Claim · model-written summary
Silicon differentially regulated 12 nutrient transport and utilization genes.
- Taxon
- riceOryza sativat0
- Treatment
- Sie0
- Gene
- NR , NiR , AMT , NR , GS , GOGAT , PT , PHT1 , PHT2 , APase , KAT1 and HAK10e0
- Outcome
- 12 key genese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e0“with Si, and differentially regulated 12 key genes ( NR , NiR , AMT , NR , GS , GOGAT , PT , PHT1 , PHT2 , APase , KAT1 and HAK10) related with NPK transport and utilization”
Claim · model-written summary
Silicon priming with arsenic positively influenced growth of arsenic-stressed rice.
- Taxon
- riceOryza sativae0
- Treatment
- Si priming of seeds along with As (III)e0
- Outcome
- growthe0
- Direction
- positivelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si priming of seeds along with As (III) influences growth positively of As-stressed rice”
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