Evidence map›Paper›PMID 30623551›Full record

ArticlePlant biotechnology journal2019

The road to astaxanthin production in tomato fruit reveals plastid and metabolic adaptation resulting in an unintended high lycopene genotype with delayed over-ripening properties.

Eugenia M A Enfissi, Marilise Nogueira, Caterina D'Ambrosio, Adriana Lucia Stigliani, Giovanni Giorio, Norihiko Misawa, Paul D Fraser

Abstract read
In one paragraph

Article in Plant biotechnology journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  4. Microorganisms · 2025
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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

7 authors.

Eugenia M A EnfissiSchool of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, UK.
Marilise NogueiraSchool of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, UK.
Caterina D'AmbrosioMetapontum Agrobios Research Centre, ALSIA, Metaponto, Italy.
Adriana Lucia StiglianiMetapontum Agrobios Research Centre, ALSIA, Metaponto, Italy.
Giovanni GiorioMetapontum Agrobios Research Centre, ALSIA, Metaponto, Italy.
Norihiko MisawaRes Inst Bioresources & Biotechnol, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan.
Paul D FraserSchool of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, UK.ORCID 0000-0002-5953-8900

Funding

Biotechnology and Biological Sciences Research Council BB/P001742/1
6 · The paper itself

Abstract

Tomato fruit are an important nutritional component of the human diet and offer potential to act as a cell factory for speciality chemicals, which are often produced by chemical synthesis. In the present study our goal was to produce competitive levels of the high value ketocarotenoid, astaxanthin, in tomato fruit. The initial stage in this process was achieved by expressing the 4, 4' carotenoid oxygenase (crtW) and 3, 3' hydroxylase (crtZ) from marine bacteria in tomato under constitutive control. Characterization of this genotype showed a surprising low level production of ketocarotenoids in ripe fruit but over production of lycopene (~3.5 mg/g DW), accompanied by delayed ripening. In order to accumulate these non-endogenous carotenoids, metabolite induced plastid differentiation was evident as well as esterification. Metabolomic and pathway based transcription studies corroborated the delayed onset of ripening. The data also revealed the importance of determining pheno/chemotype inheritance, with ketocarotenoid producing progeny displaying loss of vigour in the homozygous state but stability and robustness in the hemizygous state. To iteratively build on these data and optimize ketocarotenoid production in this genotype, a lycopene β-cyclase was incorporated to avoid precursor limitations and a more efficient hydroxylase was introduced. These combinations resulted in the production of astaxanthin (and ketocarotenoid esters) in ripe fruit at ~3 mg/g DW. Based on previous studies, this level of product formation represents an economic competitive value in a Generally Regarded As Safe (GRAS) matrix that requires minimal downstream processing.

Indexed as

CarotenoidsCaulobacteraceaeFruitGene Expression Regulation, PlantGenotypeLycopeneMixed Function OxygenasesOxygenasesPlant ProteinsPlants, Genetically ModifiedPlastidsSolanum lycopersicumXanthophyllsastaxanthinecarotenoid oxygenaseCarotenoidsLycopeneMixed Function OxygenasesOxygenasesPlant ProteinsXanthophyllscellular adaptationisoprenoidketocarotenoidMetabolic engineeringplastidSolanum lycopersicum (tomato)

Identifiers

PMID30623551
PMCPMC6662112

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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.