| title: |
| Funktionelle Charakterisierung der mitochondrialen GDC- und SHM-Genfamilien in Arabidopsis
thaliana durch Komplementation mit heterologen Genen |
|
| contributing persons: |
| Nadja Engel[VerfasserIn] |
 |
142687537 |
| Hermann Bauwe
, Prof. Dr. rer. nat. habil.[AkademischeR BetreuerIn] |
| Birgit Piechulla
, Prof. Dr. rer. nat. habil.[AkademischeR BetreuerIn] |
|
| contributing corporate bodies: |
| Universität Rostock, Mathematisch-Naturwissenschaftliche Fakultät[Grad-verleihende Institution] |
|
2147083-2 |
|
| |
| abstract: |
|
Durch die Oxygenase-Reaktion der Rubisco wird in Pflanzen toxisches 2-Phosphoglykolat
produziert, das umgehend durch den photorespiratorischen Zyklus abgebaut werden muss.
Die Glycin-Decarboxylase (GDC) in Kooperation mit der Serin-Hydroxymethyltransferase
(SHM) sind entscheidend für den photorespiratorischen Durchsatz im pflanzlichen Mitochondrium.
Im Rahmen dieser Arbeit wurden die ersten Arabidopsis GDC- und SHM-Nullmutanten isoliert,
die sich durch ihren letalen Phänotyp im Kotyledonenstadium von allen anderen photorespiratorischen
Mutanten abgrenzen.
[German] |
|
In plants the oxygenase-reaction of Rubisco produces the toxic compound 2-phosphoglycolate,
which comes recycled by the photorespiratory cycle, immediately. In the plant mitochondrion,
the combined action of glycine decarboxylase (GDC) and serine hydroxymethyltransferase
(SHM) is essential for the photorespiratory flux. This study presents the first Arabidopsis
GDC and SHM knockout mutants which distinguish from all other photorespiratory mutants
by its lethality in the cotyledon stage. My results gave evidence that GDC and SHM
are necessary in autotrophic as well as heterotrophic tissues and therefore have to
be realized as not exclusive photorespiratory enzymes.
[English] |
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| document type: |
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| institution: |
| Faculty of Mathematics and Natural Sciences |
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| language: |
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| subject class (DDC): |
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publication /
production: |
Rostock
|
Rostock: Universität Rostock
|
|
2010
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| identifiers: |
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| access condition: |
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| license/rights statement: |
all rights reserved
This work may only be used under the terms of the German Copyright Law (Urheberrechtsgesetz). |
|
|
| RosDok id: |
rosdok_disshab_0000000531 |
| created / modified: |
03.11.2010 / 08.08.2023
|
| metadata license: |
The metadata of this document was dedicated to the public domain
(CC0 1.0 Universal Public Domain Dedication). |
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