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Volume 10
Issue 2
10.3390/plants10020333
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Article

Ethephon Activates the Transcription of Senescence-Associated Genes and Nitrogen Mobilization in Grapevine Leaves (Vitis vinifera cv. Riesling)

by
Maximilian Hendgen
1,*,
Stefan Günther
2,
Sven Schubert
3 and
Otmar Löhnertz
1
1
Department of Soil Science and Plant Nutrition, Hochschule Geisenheim University, Von-Lade-Str. 1, D-65366 Geisenheim, Germany
2
Bioinformatics and Deep Sequencing Platform, Max Planck Institute for Heart and Lung Research, Ludwigstr. 43, D-61231 Bad Nauheim, Germany
3
Institute of Plant Nutrition (iFZ), Justus Liebig University, Heinrich-Buff-Ring 26-32, D-35392 Giessen, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: George Banilas
Plants 2021, 10(2), 333; https://doi.org/10.3390/plants10020333
Received: 27 January 2021 / Revised: 5 February 2021 / Accepted: 5 February 2021 / Published: 9 February 2021
(This article belongs to the Special Issue Grapevine Responses to Environmental Challenges)
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Abstract

Nitrogen (N) remobilization in the context of leaf senescence is of considerable importance for the viability of perennial plants. In late-ripening crops, such as Vitis vinifera, it may also affect berry ripening and fruit quality. Numerous studies on the model plant Arabidopsis thaliana have confirmed an involvement of the plant hormone ethylene in the regulation of senescence. However, ethylene research on grapevine was mostly focused on its involvement in berry ripening and stress tolerance until now. To investigate the effect of ethylene on the initiation, regulation, and progress of senescence-dependent N mobilization in grapevine leaves, we treated field-grown Vitis vinifera cv. Riesling vines with 25 mM ethephon at the end of berry ripening. Ethephon induced premature chlorophyll degradation and caused a shift of the leaf transcriptome equivalent to developmental leaf senescence. The upregulated metabolic processes covered the entire N remobilization process chain, altered the amino acid composition in the leaves, and resulted in an average 60% decrease in leaf N. Our findings increase the fundamental knowledge about the initiation and manipulation of leaf N remobilization in perennial woody plants by ethephon. This offers a methodological approach to the targeted induction of senescence and thus to an improvement in the N supply of grapes. View Full-Text
Keywords: ethylene; transcriptome; leaf senescence; stress response ethylene; transcriptome; leaf senescence; stress response
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MDPI and ACS Style

Hendgen, M.; Günther, S.; Schubert, S.; Löhnertz, O. Ethephon Activates the Transcription of Senescence-Associated Genes and Nitrogen Mobilization in Grapevine Leaves (Vitis vinifera cv. Riesling). Plants 2021, 10, 333. https://doi.org/10.3390/plants10020333

AMA Style

Hendgen M, Günther S, Schubert S, Löhnertz O. Ethephon Activates the Transcription of Senescence-Associated Genes and Nitrogen Mobilization in Grapevine Leaves (Vitis vinifera cv. Riesling). Plants. 2021; 10(2):333. https://doi.org/10.3390/plants10020333

Chicago/Turabian Style

Hendgen, Maximilian, Stefan Günther, Sven Schubert, and Otmar Löhnertz. 2021. "Ethephon Activates the Transcription of Senescence-Associated Genes and Nitrogen Mobilization in Grapevine Leaves (Vitis vinifera cv. Riesling)" Plants 10, no. 2: 333. https://doi.org/10.3390/plants10020333

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