Induction of phenolic compounds by UV and PAR is modulated by leaf ontogeny and barley genotype

Copyright © 2018 Elsevier Masson SAS. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 134(2019) vom: 18. Jan., Seite 81-93
1. Verfasser: Holub, Petr (VerfasserIn)
Weitere Verfasser: Nezval, Jakub, Štroch, Michal, Špunda, Vladimír, Urban, Otmar, Jansen, Marcel A K, Klem, Karel
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Hordeum vulgare Leaf age Light irradiance Photoprotection Secondary metabolites Ultraviolet radiation Xanthophyll cycle Flavonols Phenols mehr... Xanthophylls Chlorophyll 1406-65-1 Carotenoids 36-88-4
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245 1 0 |a Induction of phenolic compounds by UV and PAR is modulated by leaf ontogeny and barley genotype 
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520 |a Copyright © 2018 Elsevier Masson SAS. All rights reserved. 
520 |a We investigated the effect of leaf ontogeny and barley genotype on the accumulation of phenolic compounds (PhCs) induced by ultraviolet (UV) and photosynthetically active radiation (PAR). We hypothesized that different groups of PhCs are induced in leaves differing in ontogeny, and that this has consequences for protective functions and the need for other protection mechanisms. Generally, lower constitutive contents of PhCs (under conditions of UV exclusion and reduced PAR) were found in a UV-sensitive genotype (Barke) compared to a tolerant genotype (Bonus). However, UV and PAR induced accumulation of PhCs exceeded the constitutive amounts several fold. Specifically, lutonarin, 3-feruloylquinic acid, unidentified hydroxycinnamic acid and luteolin derivatives were markedly enhanced by high PAR and UV irradiances. Leaves developed during UV and PAR treatments had higher PhCs contents than mature leaves already fully developed at the onset of the UV and PAR treatment. UV and PAR treatments had, however, a minor effect on saponarin and unidentified apigenin derivatives which occur particularly in mature leaves of the tolerant genotype Bonus. In addition, high UV and PAR intensities increased the total content of xanthophylls (VAZ), while chlorophyll content was reduced, particularly in developing leaves. A redundancy analysis revealed positive associations between most of PhCs and VAZ and a negative association between total chlorophylls and carotenoids. Non-linear relationships between VAZ and lutonarin and other PhCs indicate that VAZ accumulation can compensate for the insufficient efficiency of anti-oxidative protection mediated by PhCs. Accordingly, we conclude that UV and PAR-induced accumulation of PhCs is affected by leaf ontogeny, however, this effect is compound-specific 
650 4 |a Journal Article 
650 4 |a Hordeum vulgare 
650 4 |a Leaf age 
650 4 |a Light irradiance 
650 4 |a Photoprotection 
650 4 |a Secondary metabolites 
650 4 |a Ultraviolet radiation 
650 4 |a Xanthophyll cycle 
650 7 |a Flavonols  |2 NLM 
650 7 |a Phenols  |2 NLM 
650 7 |a Xanthophylls  |2 NLM 
650 7 |a Chlorophyll  |2 NLM 
650 7 |a 1406-65-1  |2 NLM 
650 7 |a Carotenoids  |2 NLM 
650 7 |a 36-88-4  |2 NLM 
700 1 |a Nezval, Jakub  |e verfasserin  |4 aut 
700 1 |a Štroch, Michal  |e verfasserin  |4 aut 
700 1 |a Špunda, Vladimír  |e verfasserin  |4 aut 
700 1 |a Urban, Otmar  |e verfasserin  |4 aut 
700 1 |a Jansen, Marcel A K  |e verfasserin  |4 aut 
700 1 |a Klem, Karel  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Plant physiology and biochemistry : PPB  |d 1991  |g 134(2019) vom: 18. Jan., Seite 81-93  |w (DE-627)NLM098178261  |x 1873-2690  |7 nnns 
773 1 8 |g volume:134  |g year:2019  |g day:18  |g month:01  |g pages:81-93 
856 4 0 |u http://dx.doi.org/10.1016/j.plaphy.2018.08.012  |3 Volltext 
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