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231224s2014 xx |||||o 00| ||eng c |
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|e rakwb
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|a eng
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|a Inostroza-Blancheteau, Claudio
|e verfasserin
|4 aut
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| 245 |
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|a Effects of UV-B radiation on anatomical characteristics, phenolic compounds and gene expression of the phenylpropanoid pathway in highbush blueberry leaves
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| 264 |
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 17.11.2015
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|a Date Revised 30.09.2020
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|a published: Print
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|a Citation Status MEDLINE
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|a The effects of increased doses of UV-B radiation on anatomical, biochemical and molecular features of leaves of two highbush blueberry (Vaccinium corymbosum L. cv. Brigitta and Bluegold) genotypes were investigated. Plants were grown in a solid substrate and exposed to 0, 0.07, 0.12 and 0.19 Wm(-2) of biologically effective UV-B radiation for up to 72 h. Leaf thickness and the adaxial epidermis thickness fell more than 3-fold in both genotypes at the highest UV-B dose. Moreover, in Bluegold an evident disorganization in the different cell layers was observed at the highest UV-B radiation. A significant decrease in chlorophyll a/b after 6 h in Brigitta under the greater UV-B doses was observed. Anthocyanin and total phenolics were increased, especially at 0.19 Wm(-2), when compared to the control in both genotypes.Chlorogenic acid was the most abundant hydroxycinnamic acid in Brigitta, and was significantly higher (P ≤ 0.05) than in Bluegold leaves. Regarding the expression of phenylpropanoid genes, only the transcription factor VcMYBPA1 showed a significant and sustained induction at higher doses of UV-B radiation in both genotypes compared to the controls. Thus, the reduction of leaf thickness concomitant with a lower lipid peroxidation and rapid enhancement of secondary metabolites, accompanied by a stable induction of the VcMYBPA1 transcription factor suggest a better performance against UV-B radiation of the Brigitta genotype
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Phenols
|2 NLM
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|a Propionates
|2 NLM
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| 700 |
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|a Reyes-Díaz, Marjorie
|e verfasserin
|4 aut
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| 700 |
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|a Arellano, Alejandro
|e verfasserin
|4 aut
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| 700 |
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|a Latsague, Mirtha
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Acevedo, Patricio
|e verfasserin
|4 aut
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| 700 |
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|a Loyola, Rodrigo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Arce-Johnson, Patricio
|e verfasserin
|4 aut
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| 700 |
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|a Alberdi, Miren
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 85(2014) vom: 28. Dez., Seite 85-95
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g year:2014
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|g month:12
|g pages:85-95
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