Photosynthesis impairments and excitation energy dissipation on wheat plants supplied with silicon and infected with Pyricularia oryzae

Copyright © 2017 Elsevier Masson SAS. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 121(2017) vom: 15. Dez., Seite 196-205
1. Verfasser: Aucique-Pérez, Carlos Eduardo (VerfasserIn)
Weitere Verfasser: de Menezes Silva, Paulo Eduardo, Moreira, Wiler Ribas, DaMatta, Fábio Murilo, Rodrigues, Fabrício Ávila
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Fungal disease Light saturation point Photosynthesis Xanthophyll cycle Silicon Z4152N8IUI
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100 1 |a Aucique-Pérez, Carlos Eduardo  |e verfasserin  |4 aut 
245 1 0 |a Photosynthesis impairments and excitation energy dissipation on wheat plants supplied with silicon and infected with Pyricularia oryzae 
264 1 |c 2017 
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500 |a Date Revised 30.09.2020 
500 |a published: Print-Electronic 
500 |a Citation Status MEDLINE 
520 |a Copyright © 2017 Elsevier Masson SAS. All rights reserved. 
520 |a Considering the effect of silicon (Si) in reducing the blast symptoms on wheat in a scenario where the losses in the photosynthetic capacity of the infected plants is lowered, this study investigated the ability of using the incident light, the chloroplastidic pigments (chlorophylls and carotenoids) alterations and the possible role of carotenoids on the process of light dissipation on wheat plants non-supplied (-Si) or supplied (+Si) with Si and inoculated or not with Pyricularia oryzae. For + Si plants, blast severity was reduced compared to -Si plants. Reductions in the concentration of photosynthetic pigments (total chlorophyll, violanxanthin + antheraxanthin + zeaxanthin, β-carotene and lutein) were greater for inoculated -Si plants than for inoculated + Si ones. The α-carotene concentration increased for inoculated -Si and +Si plants in comparison to non-inoculated plants limiting, therefore, lutein production. Higher functional damage to the photosystem II (PSII) was noticed for inoculated -Si plants with reductions in the values of maximum quantum quenching, photochemical yield of PSII and electron transport rate, but higher values for quenching non-photochemical. This finding also contributed to reductions in the values of light saturated rate photosynthesis and light saturation point for -Si plants which was attenuated for inoculated + Si plants. Increase in dark respiration values occurred for inoculated plants than for non-inoculated ones. The Si supply to wheat plants, besides reducing blast severity, contributed to their better photosynthetic performance. Moreover, inoculated + Si plants coped with drastic losses of light energy dissipation processes (fluorescence and heat) by increasing the concentration of carotenoids which helped to maintain the structural and functional viability of the photosynthetic machinery minimizing, therefore, lipid peroxidation and the production of reactive oxygen species 
650 4 |a Journal Article 
650 4 |a Fungal disease 
650 4 |a Light saturation point 
650 4 |a Photosynthesis 
650 4 |a Xanthophyll cycle 
650 7 |a Silicon  |2 NLM 
650 7 |a Z4152N8IUI  |2 NLM 
700 1 |a de Menezes Silva, Paulo Eduardo  |e verfasserin  |4 aut 
700 1 |a Moreira, Wiler Ribas  |e verfasserin  |4 aut 
700 1 |a DaMatta, Fábio Murilo  |e verfasserin  |4 aut 
700 1 |a Rodrigues, Fabrício Ávila  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Plant physiology and biochemistry : PPB  |d 1991  |g 121(2017) vom: 15. Dez., Seite 196-205  |w (DE-627)NLM098178261  |x 1873-2690  |7 nnns 
773 1 8 |g volume:121  |g year:2017  |g day:15  |g month:12  |g pages:196-205 
856 4 0 |u http://dx.doi.org/10.1016/j.plaphy.2017.10.023  |3 Volltext 
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