Evidence map›Paper›PMID 31172355›Full record

ArticlePhotosynthesis research2019

Cryptic chlorophyll breakdown in non-senescent green Arabidopsis thaliana leaves.

Iris Süssenbacher, Damian Menghini, Gerhard Scherzer, Kathrin Salinger, Theresia Erhart, Simone Moser, Clemens Vergeiner, Stefan Hörtensteiner, Bernhard Kräutler

Open access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Photosynthesis research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.3field-weighted citation impact, top 20% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Review
  3. An evergreen mind and a heart for the colors of fall.Journal of experimental botany · 2021
    Article
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 2 countries.

Iris SüssenbacherInstitute of Organic Chemistry and Centre of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria.
Damian MenghiniInstitute of Plant and Microbial Biology, University of Zürich, Zollikerstrasse 107, 8008, Zurich, Switzerland.
Gerhard ScherzerInstitute of Organic Chemistry and Centre of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria.
Kathrin SalingerInstitute of Plant and Microbial Biology, University of Zürich, Zollikerstrasse 107, 8008, Zurich, Switzerland.
Theresia ErhartInstitute of Organic Chemistry and Centre of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria.
Simone MoserInstitute of Organic Chemistry and Centre of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria.
Clemens VergeinerInstitute of Organic Chemistry and Centre of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria.
Stefan HörtensteinerInstitute of Plant and Microbial Biology, University of Zürich, Zollikerstrasse 107, 8008, Zurich, Switzerland. shorten@botinst.uzh.ch.ORCID http://orcid.org/0000-0002-3751-5089
Bernhard KräutlerInstitute of Organic Chemistry and Centre of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria. bernhard.kraeutler@uibk.ac.at.ORCID http://orcid.org/0000-0002-2222-0587
Universität Innsbruck · ATUniversity of Zurich · CH

Funding

Austrian Science Fund P-28522Austrian Science Fund FWF P 28522Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung 31003A_172977
6 · The paper itself

Abstract

Chlorophyll (Chl) breakdown is a diagnostic visual process of leaf senescence, which furnishes phyllobilins (PBs) by the PAO/phyllobilin pathway. As Chl breakdown disables photosynthesis, it appears to have no role in photoactive green leaves. Here, colorless PBs were detected in green, non-senescent leaves of Arabidopsis thaliana. The PBs from the green leaves had structures entirely consistent with the PAO/phyllobilin pathway and the mutation of a single Chl catabolic enzyme completely abolished PBs with the particular modification. Hence, the PAO/phyllobilin pathway was active in the absence of visible senescence and expression of genes encoding Chl catabolic enzymes was observed in green Arabidopsis leaves. PBs accumulated to only sub-% amounts compared to the Chls present in the green leaves, excluding a substantial contribution of Chl breakdown from rapid Chl turnover associated with photosystem II repair. Indeed, Chl turnover was shown to involve a Chl a dephytylation and Chl a reconstitution cycle. However, non-recyclable pheophytin a is also liberated in the course of photosystem II repair, and is proposed here to be scavenged and degraded to the observed PBs. Hence, a cryptic form of the established pathway of Chl breakdown is indicated to play a constitutive role in photoactive leaves.

Indexed as

ArabidopsisArabidopsis ProteinsCellular SenescenceChlorophyllChromatography, High Pressure LiquidGene Expression Regulation, PlantPhotosynthesisPlant LeavesArabidopsis ProteinsChlorophyllChlorophyll breakdownChlorophyll turnoverPAO/phyllobilin pathwayPheophytinPhotosystem II repairPhyllobilin

Identifiers

PMID31172355
OpenAlexW2958561868

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.