Pools of 14C-malic acid as a substrate for pyruvate production for the DOXP/MEP pathway of biosynthesis of carotenoids in chloroplasts

Vs, Saakov

doi:10.1007/s10628-005-0020-z

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Then, glucose will be converted into lipid (Melis 2012). The dehydration condensation between lipid and free astaxanthin formed esterified form astaxanthin (Karsten et al 2009;Schoefs et al 2001 (Saakov 2005;Ye et al 2008). IPP is the precursor for astaxanthin synthesis (Lichtenthaler 1999).…”

Section: Transcriptome and Pathway Analysis Involved In Pyruvate Metamentioning

confidence: 99%

Astaxanthin accumulation difference between non-motile cells and akinetes of Haematococcus pluvialis was affected by pyruvate metabolism

Fang

Zhang

Fei

et al. 2020

Bioresour. Bioprocess.

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Background: Haematococcus pluvialis is the best source of natural astaxanthin, known as the king of antioxidants. H. pluvialis have four cell forms: spore, motile cell, non-motile cell and akinete. Spores and motile cells are susceptible to photoinhibition and would die under photoinduction conditions. Photoinduction using non-motile cells as seeds could result in a higher astaxanthin production than that using akinetes. However, the mechanism of this phenomenon has not been clarified. Results:Transcriptome was sequenced and annotated to illustrate the mechanism of this phenomenon. All differentially expressed genes involved in astaxanthin biosynthesis were up-regulated. Particularly, chyb gene was up-regulated by 16-fold, improving the conversion of β-carotene into astaxanthin. Pyruvate was the precursor of carotenoids biosynthesis. Pyruvate kinase gene expression level was increased by 2.0-fold at the early stage of akinetes formation. More changes of gene transcription occurred at the early stage of akinetes formation, 52.7% and 51.9% of total DEGs in control group and treatment group, respectively. Conclusions:Genes transcription network was constructed and the synthesis mechanism of astaxanthin was clarified. The results are expected to further guide the in-depth optimization of the astaxanthin production process in H. pluvialis by improving pyruvate metabolism.

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Section: Transcriptome and Pathway Analysis Involved In Pyruvate Metamentioning

confidence: 99%

Astaxanthin accumulation difference between non-motile cells and akinetes of Haematococcus pluvialis was affected by pyruvate metabolism

Fang

Zhang

Fei

et al. 2020

Bioresour. Bioprocess.

View full text Add to dashboard Cite

show abstract

Transcriptome sequencing and metabolic pathways of astaxanthin accumulated in Haematococcus pluvialis mutant under 15% CO2

Cheng

Zhu

et al. 2017

Bioresource Technology

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Pools of 14C-malic acid as a substrate for pyruvate production for the DOXP/MEP pathway of biosynthesis of carotenoids in chloroplasts

Cited by 2 publications

References 5 publications

Astaxanthin accumulation difference between non-motile cells and akinetes of Haematococcus pluvialis was affected by pyruvate metabolism

Astaxanthin accumulation difference between non-motile cells and akinetes of Haematococcus pluvialis was affected by pyruvate metabolism

Transcriptome sequencing and metabolic pathways of astaxanthin accumulated in Haematococcus pluvialis mutant under 15% CO2

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