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HEBE, a novel positive regulator of senescence in Solanum lycopersicum

Leaf senescence and plant aging are traits of great interest for breeders. Senescing cells undergo important physiological and biochemical changes, while cellular structures such as chloroplasts are degraded with dramatic metabolic consequences for the whole plant. The possibility of prolonging the...

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Autores principales: Forlani, Sara, Cozzi, Carolina, Rosa, Stefano, Tadini, Luca, Masiero, Simona, Mizzotti, Chiara
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7335192/
https://www.ncbi.nlm.nih.gov/pubmed/32620827
http://dx.doi.org/10.1038/s41598-020-67937-z
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author Forlani, Sara
Cozzi, Carolina
Rosa, Stefano
Tadini, Luca
Masiero, Simona
Mizzotti, Chiara
author_facet Forlani, Sara
Cozzi, Carolina
Rosa, Stefano
Tadini, Luca
Masiero, Simona
Mizzotti, Chiara
author_sort Forlani, Sara
collection PubMed
description Leaf senescence and plant aging are traits of great interest for breeders. Senescing cells undergo important physiological and biochemical changes, while cellular structures such as chloroplasts are degraded with dramatic metabolic consequences for the whole plant. The possibility of prolonging the photosynthetic ability of leaves could positively impact the plant’s life span with benefits for biomass production and metabolite accumulation; plants with these characteristics display a stay-green phenotype. A group of plant transcription factors known as NAC play a pivotal role in controlling senescence: here we describe the involvement of the tomato NAC transcription factor Solyc12g036480, which transcript is present in leaves and floral buds. Since its silencing delays leaf senescence and prevents plants from ageing, we renamed Solyc12g0364 HḖBĒ, for the Greek goddess of youth. In this manuscript we describe how HEB downregulation negatively affects the progression of senescence, resulting in changes in transcription of senescence-promoting genes, as well as the activity of enzymes involved in chlorophyll degradation, thereby explaining the stay-green phenotype.
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spelling pubmed-73351922020-07-07 HEBE, a novel positive regulator of senescence in Solanum lycopersicum Forlani, Sara Cozzi, Carolina Rosa, Stefano Tadini, Luca Masiero, Simona Mizzotti, Chiara Sci Rep Article Leaf senescence and plant aging are traits of great interest for breeders. Senescing cells undergo important physiological and biochemical changes, while cellular structures such as chloroplasts are degraded with dramatic metabolic consequences for the whole plant. The possibility of prolonging the photosynthetic ability of leaves could positively impact the plant’s life span with benefits for biomass production and metabolite accumulation; plants with these characteristics display a stay-green phenotype. A group of plant transcription factors known as NAC play a pivotal role in controlling senescence: here we describe the involvement of the tomato NAC transcription factor Solyc12g036480, which transcript is present in leaves and floral buds. Since its silencing delays leaf senescence and prevents plants from ageing, we renamed Solyc12g0364 HḖBĒ, for the Greek goddess of youth. In this manuscript we describe how HEB downregulation negatively affects the progression of senescence, resulting in changes in transcription of senescence-promoting genes, as well as the activity of enzymes involved in chlorophyll degradation, thereby explaining the stay-green phenotype. Nature Publishing Group UK 2020-07-03 /pmc/articles/PMC7335192/ /pubmed/32620827 http://dx.doi.org/10.1038/s41598-020-67937-z Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Forlani, Sara
Cozzi, Carolina
Rosa, Stefano
Tadini, Luca
Masiero, Simona
Mizzotti, Chiara
HEBE, a novel positive regulator of senescence in Solanum lycopersicum
title HEBE, a novel positive regulator of senescence in Solanum lycopersicum
title_full HEBE, a novel positive regulator of senescence in Solanum lycopersicum
title_fullStr HEBE, a novel positive regulator of senescence in Solanum lycopersicum
title_full_unstemmed HEBE, a novel positive regulator of senescence in Solanum lycopersicum
title_short HEBE, a novel positive regulator of senescence in Solanum lycopersicum
title_sort hebe, a novel positive regulator of senescence in solanum lycopersicum
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7335192/
https://www.ncbi.nlm.nih.gov/pubmed/32620827
http://dx.doi.org/10.1038/s41598-020-67937-z
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