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Cited by 294

The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.

Senescence‐specific regulation of catalases in Arabidopsis thaliana (L.) Heynh

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ZIMMERMANN, PETRA, HEINLEIN, CHRISTINA, ORENDI, GABRIELE, ZENTGRAF, ULRIKE·2006·Plant, Cell & Environment
DOI 10.1111/j.1365-3040.2005.01459.x
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Abstract

Oxygen free radicals are thought to play an essential role in senescence, especially those derived from peroxisomes. Therefore, the activities of different isoforms of the peroxisomal hydrogen peroxide (H 2 O 2)‐scavenging enzyme catalase (CAT) were analysed during senescence of Arabidopsis. CAT2 activity decreased with bolting time parallel with cytosolic ascorbate peroxidase 1 (APX1) activity before loss of chlorophyll could be measured. At the same time point, the H 2 O 2 content increased. Subsequently, the stress‐inducible CAT3 isoform was activated and APX1 activity was recovered, accompanied by a decline of the H 2 O 2 content. In very late stages, low activities of the seed‐specific CAT1 became detectable in leaves, but H 2 O 2 increased again. Further analyses of CAT expression by promoter : β‐glucuronidase (GUS) fusions in transgenic plants revealed a vasculature‐specific CAT3 expression, whereas CAT2 expression turned out to be specific for photosynthetic active tissues. CAT2 expression is down‐regulated during leaf senescence, while CAT3 expression is induced with age and corresponds to an accumulation of H 2 O 2 in the vascular bundles. CAT2 down‐regulation on the transcriptional level appears as the initial step in creating the H 2 O 2 peak during bolting time, while the decrease in APX1 activity might only be a secondary and amplifying effect.

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Metadata

Authors
ZIMMERMANN, P., HEINLEIN, C., ORENDI, G., & ZENTGRAF, U.
Venue
Plant, Cell & Environment
Publisher
Wiley
Published
2006-01-12
Volume
29
Issue
6
Pages
1049-1060
ISSN
  • 0140-7791 (ISSN-L)
  • 1365-3040
DOI
10.1111/j.1365-3040.2005.01459.x
OpenAlex
W2162689947
Cited by
294
References
43
FWCI
8.41
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Senescence‐specific regulation of catalases in Arabidopsis thaliana (L.) Heynh. https://app.cochat.ai/papers/10.1111/j.1365-3040.2005.01459.x
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ZIMMERMANN, P., HEINLEIN, C., ORENDI, G., & ZENTGRAF, U. (2006). Senescence‐specific regulation of catalases in Arabidopsis thaliana (L.) Heynh. Plant, Cell & Environment. https://doi.org/10.1111/j.1365-3040.2005.01459.x

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.