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Alteration of the phenylpropanoid pathway by watercore disorder in apple (Malus x domestica)
ID Čebulj, Anka (Author), ID Mikulič Petkovšek, Maja (Author), ID Rares Lucaciu, Calin (Author), ID Veberič, Robert (Author), ID Marinovic, Silvija (Author), ID Kolarek, Martina (Author), ID Hutabarat, Olly Sanny (Author), ID Faramarzi, Shabad (Author), ID Rattei, Thomas (Author), ID Molitor, Christian (Author), ID Hudina, Metka (Author), ID Haselmair-Gosch, Christian (Author), ID Halbwirth, Heidi (Author), ID Slatnar, Ana (Author)

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Abstract
Watercore is a physiological disorder of apple expressed as fluid deposition in intercellular spaces. We analysed the watercore prone cultivar 'Fuji' to establish a link between enzymatic response and fluid accumulation in the fruit. Individual phenolic content, selected enzyme activities of the phenylpropanoid pathway, sugars and organic acids were quantified in watercore affected flesh and peel. In addition, transcriptome sequencing was performed to obtain a first insight into molecular mechanisms underlying the physiological disorder. Sampled material included: peel (HP) and flesh from healthy fruit (H), peel from watercore affected fruit (WP), healthy flesh from fruit with watercore (HW) and watercore flesh (WW) from fruit with watercore. A sorbitol increase in watercore affected apple was observed not only in the flesh but also in the peel. Moreover, two phenolic groups (hydroxycinnamic acids and flavonols) were significantly affected by watercore and their content was higher in WP in comparison to HP. Dihydrochalcone content was the highest in WW flesh. This was supported by RNA-seq data, which indicated a generally increased expression of genes from the early flavonoid pathway, sorbitol metabolism and polyphenol oxidases. Among the phenylpropanoid pathway enzymes analysed, phloretin 2′-O-glycosyltransferase was the only one exhibiting altered activity.

Language:English
Keywords:dihydrochalcones, enzyme activity, gene expression, flavonoid pathway, phenolic compounds, physiological disorder
Work type:Article (dk_c)
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Year:2021
Publication status in journal:Published
Article version:Postprint, final article version, accepted into publication
Publication date:31.07.2021
Number of pages:9 str.
Numbering:Vol. 289, art. 110438
UDC:634
ISSN on article:1879-1018
COBISS.SI-ID:72043779 This link opens in a new window
Publication date in RUL:11.01.2022
Views:172
Downloads:63
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Record is a part of a journal

Title:Scientia horticulturae
Publisher:Elsevier
ISSN:1879-1018
COBISS.SI-ID:23111173 This link opens in a new window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:31.07.2021

Secondary language

Language:Slovenian
Keywords:jabolka, dihidrohalkoni, aktivnost encimov, izražanje genov, sintezna pot flavonoidov, fenolne spojine, fiziološke motnje, Malus x domestica

Document is financed by a project

Funder:EC - European Commission
Funding programme:H2020
Project number:675657
Name:Establishing a new generation of horticulturists: Multidisciplinary approach for breeding innovative novelties using classical and biotechnological methods
Acronym:FLOWERPOWER

Funder:FWF - Austrian Science Fund (FWF)
Project number:P32901-B

Funder:FWF - Austrian Science Fund (FWF)
Project number:P28795-B25

Funder:FWF - Austrian Science Fund (FWF)
Project number:I4296-B

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project number:P4-0013
Name:Hortikultura

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project number:P4-0133
Name:Trajnostno kmetijstvo

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