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Title:Programmed cell death occurs asymmetrically during abscission in tomato
Authors:ID Bar-Dror, Tal (Author)
ID Dermastia, Marina (Author)
ID Kladnik, Aleš (Author)
ID Tušek-Žnidarič, Magda (Author)
ID Pompe Novak, Maruša (Author)
ID Meir, Shimon (Author)
ID Burd, Shaul (Author)
ID Philosoph-Hadas, Sonia (Author)
ID Ori, Naomi (Author)
ID Sonego, Lilian (Author)
ID Dickman, Martin B. (Author)
ID Lers, Amnon (Author)
Files:.pdf PDF - Presentation file, download (2,26 MB)
MD5: 423050ED60F8C13334288E9E2C7BD5E9
 
URL URL - Source URL, visit https://doi.org/10.1105/tpc.111.092494
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo NIB - National Institute of Biology
Abstract:Abscission occurs specifically in the abscission zone (AZ) tissue as a natural stage of plant development. Previously, we observed delay of tomato (Solanum lycopersicum) leaf abscission when the LX ribonuclease (LX) was inhibited. The known association between LX expression and programmed cell death (PCD) suggested involvement of PCD in abscission. In this study, hallmarks of PCD were identified in the tomato leaf and flower AZs during the late stage of abscission. These included loss of cell viability, altered nuclear morphology, DNA fragmentation, elevated levels of reactive oxygen species and enzymatic activities, and expression of PCD-associated genes. Overexpression of antiapoptotic proteins resulted in retarded abscission, indicating PCD requirement. PCD, LX, and nuclease gene expression were visualized primarily in the AZ distal tissue, demonstrating an asymmetry between the two AZ sides. Asymmetric expression was observed for genes associated with cell wall hydrolysis, leading to AZ, or associated with ethylene biosynthesis, which induces abscission. These results suggest that different abscission-related processes occur asymmetrically between the AZ proximal and distal sides. Taken together, our findings identify PCD as a key mechanism that occurs asymmetrically during normal progression of abscission and suggest an important role for LX in this PCD process.
Keywords:plant cell, cell death, abscission
Publication status:Published
Publication version:Version of Record
Publication date:01.11.2011
Year of publishing:2011
Number of pages:str. 4146-4163
Numbering:Vol. 23, no. 11
PID:20.500.12556/DiRROS-20050 New window
UDC:577.2
ISSN on article:1040-4651
DOI:10.1105/tpc.111.092494 New window
COBISS.SI-ID:2469199 New window
Publication date in DiRROS:05.08.2024
Views:496
Downloads:289
Metadata:XML DC-XML DC-RDF
:
BAR-DROR, Tal, DERMASTIA, Marina, KLADNIK, Aleš, TUŠEK-ŽNIDARIČ, Magda, POMPE NOVAK, Maruša, MEIR, Shimon, BURD, Shaul, PHILOSOPH-HADAS, Sonia, ORI, Naomi, SONEGO, Lilian, DICKMAN, Martin B. and LERS, Amnon, 2011, Programmed cell death occurs asymmetrically during abscission in tomato. The Plant cell [online]. 2011. Vol. 23, no. 11, p. 4146–4163. [Accessed 9 April 2025]. DOI 10.1105/tpc.111.092494. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=20050
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Record is a part of a journal

Title:The Plant cell
Shortened title:Plant cell
Publisher:American Society of Plant Physiologists
ISSN:1040-4651
COBISS.SI-ID:28940033 New window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:J4-9738-2007
Name:Biotehnološki nadzor odpadanja plodov paradižnika za dosego večjega pridelka
Funder:Other - Other funder or multiple funders
Name:Research Grant 1019/06 from the Israel Science Foundation of the Israel Academy of Sciences
Funder:Other - Other funder or multiple funders
Project number:IS-3645-04
Name:U.S.–Israel Binational Agricultural Research and Development Fund
Acronym:BARD
Funder:Other - Other funder or multiple funders
Project number:IS-4073-07C
Name:U.S.–Israel Binational Agricultural Research and Development Fund
Acronym:BARD

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

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