Foliar application of nanoparticles mitigates the chilling effect on photosynthesis and photoprotection in sugarcane.

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ID: 93139
2020
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Ranked #30 of 544 articles by views in Plant physiology and biochemistry : PPB

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Abstract
Chilling is one of the main abiotic stresses that adversely affect the productivity of sugarcane, in marginal tropical regions where chilling incidence occurs with seasonal changes. However, nanoparticles (NPs) have been tested as a mitigation strategy against diverse abiotic stresses. In this study, NPs such as silicon dioxide (nSiO; 5-15 nm), zinc oxide (nZnO; <100 nm), selenium (nSe; 100 mesh), graphene (graphene nanoribbons [GNRs] alkyl functionalized; 2-15 μm × 40-250 nm) were applied as foliar sprays on sugarcane leaves to understand the amelioration effect of NPs against negative impact of chilling stress on photosynthesis and photoprotection. To this end, seedlings of moderately chilling tolerant sugarcane variety Guitang 49 was used for current study and spilt plot was used as statistical design. The changes in the level chilling tolerance after the application of NPs on Guitang 49 were compared with tolerance level of chilling tolerant variety Guitang 28. NPs treatments reduced the adverse effects of chilling by maintaining the maximum photochemical efficiency of PSII (F/F), maximum photo-oxidizable PSI (P), and photosynthetic gas exchange. Furthermore, application of NPs increased the content of light harvesting pigments (chlorophylls and cartinoids) in NPs treated seedlings. Higher carotenoid accumulation in leaves of NPs treated seedlings enhanced the nonphotochemical quenching (NPQ) of PSII. Among the NPs, nSiO showed higher amelioration effects and it can be used alone or in combination with other NPs to mitigate chilling stress in sugarcane.
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elsheery2020foliarplant Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Elsheery, Nabil I;Sunoj, V S J;Wen, Y;Zhu, J J;Muralidharan, G;Cao, K F;
Journal Plant physiology and biochemistry : PPB
Year 2020
DOI
S0981-9428(20)30043-7
URL
Keywords
nanoparticles sugarcane photoprotection gas exchange chilling tolerance

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