Abstract
Climate change is now evident and severe water shortage due to unpredictable raining season along with extended summers is expected to hamper crop production across the globe. Application of nanoparticle based formulations is one of the most sought after approach that is being explored currently to alleviate drought stress impact on plants. The present study was aimed to evaluate the potential of biosynthesized silica nanoparticles (silica NPs) in improving the drought tolerance of wheat. Four different concentrations of silica NPs (30, 60, 90, and 120 ppm) were used to treat wheat plants grown under two irrigation regimes- 50% soil moisture content (drought) and 100% soil moisture content (well-watered). The induced drought caused a prominent reduction in both - the crop yield and the morphological parameters of the crop. Among the four concentrations used, application of 60 ppm concentration of silica NPs was found to be most effective in promoting the overall plant’s tolerance towards drought stress. After treatment with silica NPs at 60 ppm concentration, the plant height increased by 8.28%, spikes per plant by 98%, seeds per spike by 12.4%, and thousand seed weight by 37.5% as compared to the control. Besides this, expression levels of four drought stress responsive genes-ABC1, Wdhn13, CHP, and EXP2 was also studied. We observed an enhanced expression of all the stress genes after treatment with silica nanoparticles in wheat plants grown under water deficient conditions, clearly supporting the influence of NP treatment at gene/molecular level. In nutshell, we conclude that silica nanoparticles have the potential to significantly ameliorate the negative impact of drought stress by reviving plant growth and modulating gene expression.
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Claims 7
Claim · model-written summary
Induced drought caused a prominent reduction in wheat crop yield and morphological parameters compared with well-watered plants.
- Taxon
- wheat
Triticum aestivume2 - Treatment
- induced droughte1
- Outcome
- crop yield and the morphological parameterse1
- Direction
- reductione1
- Comparator
- well-waterede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The induced drought caused a prominent reduction in both - the crop yield and the morphological parameters of the crop”
e2“used to treat wheat plants grown under two irrigation regimes- 50% soil moisture content (drought) and 100% soil moisture content (well-watered)”
Claim · model-written summary
Among four silica NP concentrations, 60 ppm was the most effective in promoting wheat tolerance towards drought stress.
- Taxon
- wheatTriticum aestivume2
- Treatment
- 60 ppm concentration of silica NPse3
- Outcome
- overall plant’s tolerance towards drought stresse3
- Direction
- most effectivee3
- Comparator
- Among the four concentrations usede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“used to treat wheat plants grown under two irrigation regimes- 50% soil moisture content (drought) and 100% soil moisture content (well-watered)”
e3“Among the four concentrations used, application of 60 ppm concentration of silica NPs was found to be most effective in promoting the overall plant’s tolerance towards drought stress”
Claim · model-written summary
Silica NP treatment at 60 ppm increased wheat plant height by 8.28% compared with the control.
- Taxon
- wheatTriticum aestivume2
- Treatment
- silica NPs at 60 ppm concentratione4
- Outcome
- plant heighte4
- Direction
- increasede4
- Value
- 8.28%e4
- Comparator
- the controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“used to treat wheat plants grown under two irrigation regimes- 50% soil moisture content (drought) and 100% soil moisture content (well-watered)”
e4“After treatment with silica NPs at 60 ppm concentration, the plant height increased by 8.28%, spikes per plant by 98%, seeds per spike by 12.4%, and thousand seed weight by 37.5% as compared to the control”
Claim · model-written summary
Silica NP treatment at 60 ppm increased spikes per wheat plant by 98% compared with the control.
- Taxon
- wheatTriticum aestivume2
- Treatment
- silica NPs at 60 ppm concentratione4
- Outcome
- spikes per plante4
- Direction
- increasede4
- Value
- 98%e4
- Comparator
- the controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“used to treat wheat plants grown under two irrigation regimes- 50% soil moisture content (drought) and 100% soil moisture content (well-watered)”
e4“After treatment with silica NPs at 60 ppm concentration, the plant height increased by 8.28%, spikes per plant by 98%, seeds per spike by 12.4%, and thousand seed weight by 37.5% as compared to the control”
Claim · model-written summary
Silica NP treatment at 60 ppm increased seeds per spike of wheat by 12.4% compared with the control.
- Taxon
- wheatTriticum aestivume2
- Treatment
- silica NPs at 60 ppm concentratione4
- Outcome
- seeds per spikee4
- Direction
- increasede4
- Value
- 12.4%e4
- Comparator
- the controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“used to treat wheat plants grown under two irrigation regimes- 50% soil moisture content (drought) and 100% soil moisture content (well-watered)”
e4“After treatment with silica NPs at 60 ppm concentration, the plant height increased by 8.28%, spikes per plant by 98%, seeds per spike by 12.4%, and thousand seed weight by 37.5% as compared to the control”
Claim · model-written summary
Silica NP treatment at 60 ppm increased thousand seed weight of wheat by 37.5% compared with the control.
- Taxon
- wheatTriticum aestivume2
- Treatment
- silica NPs at 60 ppm concentratione4
- Outcome
- thousand seed weighte4
- Direction
- increasede4
- Value
- 37.5%e4
- Comparator
- the controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“used to treat wheat plants grown under two irrigation regimes- 50% soil moisture content (drought) and 100% soil moisture content (well-watered)”
e4“After treatment with silica NPs at 60 ppm concentration, the plant height increased by 8.28%, spikes per plant by 98%, seeds per spike by 12.4%, and thousand seed weight by 37.5% as compared to the control”
Claim · model-written summary
Silica NP treatment enhanced the expression of the four drought-responsive stress genes in wheat under water deficit.
- Taxon
- wheatTriticum aestivume5
- Treatment
- silica nanoparticlese5
- Gene
- ABC1, Wdhn13, CHP, and EXP2e6
- Outcome
- expression of all the stress genese5
- Direction
- enhancede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“We observed an enhanced expression of all the stress genes after treatment with silica nanoparticles in wheat plants grown under water deficient conditions”
e6“expression levels of four drought stress responsive genes-ABC1, Wdhn13, CHP, and EXP2”
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