scholarly journals Combination of RNA-Seq transcriptomics and iTRAQ proteomics reveal the mechanism involved in fresh-cut yam yellowing

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shuang Guo ◽  
Dan Wang ◽  
Yue Ma ◽  
Yan Zhang ◽  
Xiaoyan Zhao
Keyword(s):  
Tricarboxylic Acid Cycle ◽  
Carotenoid Biosynthesis ◽  
Differentially Expressed ◽  
Biosynthesis Pathway ◽  
Total Carotenoids ◽  
Phenylpropanoid Biosynthesis ◽  
Itraq Proteomics ◽  
Carotenoid Biosynthesis Pathway ◽  
Fresh Cut ◽  
Yellow Pigments

AbstractThe aim of this study was to examine the regulation of transcriptomics and proteomics related to the yellowing of fresh-cut yams after storage. The comparison of yellow fresh-cut yam (YFY) vs. white fresh-cut yam (control) revealed 6894 upregulated and 6800 downregulated differentially expressed genes along with 1277 upregulated and 677 downregulated differentially expressed proteins. The results showed that the total carotenoids, flavonoids, and bisdemethoxycurcumin in YFY were higher than in the control due to the significant up-regulation of critical genes in the carotenoid biosynthesis pathway, flavonoid biosynthesis pathway, and stilbenoid, diarylheptanoid, and gingerol biosynthesis pathway. In addition, the tricarboxylic acid cycle and phenylpropanoid biosynthesis were both enhanced in YFY compared to the control, providing energy and precursors for the formation of yellow pigments. The results suggest that the synthesis of yellow pigments is regulated by critical genes, which might explain the yellowing of fresh-cut yam after storage.

scholarly journals Genetic Characterization of the Carotenoid Biosynthetic Pathway in Methylobacterium extorquens AM1 and Isolation of a Colorless Mutant

2003 ◽  
Vol 69 (12) ◽  
pp. 7563-7566 ◽  
Author(s):  
Stephen J. Van Dien ◽  
Christopher J. Marx ◽  
Brooke N. O'Brien ◽  
Mary E. Lidstrom
Keyword(s):  
Biosynthetic Pathway ◽  
Genetic Characterization ◽  
Carotenoid Biosynthesis ◽  
Biosynthesis Pathway ◽  
Wild Type ◽  
Methylobacterium Extorquens ◽  
Growth Properties ◽  
Carotenoid Biosynthesis Pathway ◽  
Free Strain

ABSTRACT Genomic searches were used to reconstruct the putative carotenoid biosynthesis pathway in the pink-pigmented facultative methylotroph Methylobacterium extorquens AM1. Four genes for putative phytoene desaturases were identified. A colorless mutant was obtained by transposon mutagenesis, and the insertion was shown to be in one of the putative phytoene desaturase genes. Mutations in the other three did not affect color. The tetracycline marker was removed from the original transposon mutant, resulting in a pigment-free strain with wild-type growth properties useful as a tool for future experiments.

scholarly journals EPR study of thylakoid membrane dynamics in mutants of the carotenoid biosynthesis pathway of Synechocystis sp. PCC6803.

2012 ◽  
Vol 59 (1) ◽  
Author(s):  
Kinga Kłodawska ◽  
Przemysław Malec ◽  
Mihály Kis ◽  
Zoltán Gombos ◽  
Kazimierz Strzałka
Keyword(s):  
Optimal Growth ◽  
Carotenoid Biosynthesis ◽  
Growth Conditions ◽  
Thylakoid Membranes ◽  
Membrane Dynamics ◽  
Biosynthesis Pathway ◽  
Light Regimes ◽  
Genes Encoding ◽  
Splitting Parameter ◽  
Carotenoid Biosynthesis Pathway

EPR spectroscopy using 5-doxylstearic acid (5-SASL) and 16-doxylstearic acid (16-SASL) spin probes was used to study the fluidity of thylakoid membranes. These were isolated from wild type Synechocystis and from several mutants in genes encoding selected enzymes of the carotenoid biosynthesis pathway and/or acyl-lipid desaturases. Cyanobacteria were cultivated at 25°C and 35°C under different light regimes: photoautotrophically (PAG) and/or in light-activated heterotrophic conditions (LAHG). The relative fluidity of membranes was estimated from EPR spectra based on the empirical outermost splitting parameter in a temperature range from 15°C to 40°C. Our findings demonstrate that in native thylakoid membranes the elimination of xanthophylls decreased fluidity in the inner membrane region under optimal growth conditions (25°C) and increased it under sublethal heat stress (35°C). This indicated that the overall fluidity of native photosynthetic membranes in cyanobacteria may be influenced by the ratio of polar to non-polar carotenoid pools under different environmental conditions.

Molecular genetics of the carotenoid biosynthesis pathway in plants and algae

1997 ◽  
Vol 69 (10) ◽  
pp. 2151-2158 ◽  
Author(s):  
Joseph Hirschberg ◽  
M. Cohen ◽  
Mark Harker ◽  
Tamar Lotan ◽  
Varda Mann ◽  
...  
Keyword(s):  
Molecular Genetics ◽  
Carotenoid Biosynthesis ◽  
Biosynthesis Pathway ◽  
Carotenoid Biosynthesis Pathway

Metabolic engineering of Lilium × formolongi using multiple genes of the carotenoid biosynthesis pathway

2010 ◽  
Vol 4 (4) ◽  
pp. 269-280 ◽  
Author(s):  
Pejman Azadi ◽  
Ntui Valentaine Otang ◽  
Dong Poh Chin ◽  
Ikuo Nakamura ◽  
Masaki Fujisawa ◽  
...  
Keyword(s):  
Metabolic Engineering ◽  
Carotenoid Biosynthesis ◽  
Biosynthesis Pathway ◽  
Multiple Genes ◽  
Carotenoid Biosynthesis Pathway

Non-additive phenotypic and transcriptomic inheritance in a citrus allotetraploid somatic hybrid between C. reticulata and C. limon: the case of pulp carotenoid biosynthesis pathway

2009 ◽  
Vol 28 (11) ◽  
pp. 1689-1697 ◽  
Author(s):  
Jean Baptiste Bassene ◽  
Yann Froelicher ◽  
Claudie Dhuique-Mayer ◽  
Waffa Mouhaya ◽  
Rosa Mar Ferrer ◽  
...  
Keyword(s):  
Somatic Hybrid ◽  
Carotenoid Biosynthesis ◽  
Biosynthesis Pathway ◽  
Carotenoid Biosynthesis Pathway

scholarly journals Transcriptome and Metabolome Analyses Reveal an Insight of Chlorophyll, Photosynthesis, Metal Ion and Phenylpropanoids Related Pathways in Sugarcane Ratoon Chlorosis

2021 ◽  
Author(s):  
Ting Luo ◽  
Zhongfeng Zhou ◽  
Yuchi Deng ◽  
Yegeng Fan ◽  
Lihang Qiu ◽  
...  
Keyword(s):  
Metal Ion ◽  
Agronomic Traits ◽  
Ion Homeostasis ◽  
Differentially Expressed ◽  
Biosynthesis Pathway ◽  
Metabolome Analysis ◽  
Chlorophyll Metabolism ◽  
Metal Ion Homeostasis ◽  
Phenylpropanoid Biosynthesis ◽  
Ratoon Sugarcane

Abstract BackgroundRatoon sugarcane (Saccharum officinarum) is susceptible to chlorosis, significantly reducing production. The molecular mechanism underlying this phenomenon remains unknown. We analyzed the transcriptome and metabolome of chlorotic and non-chlorotic sugarcane leaves from the same field to gain insight into the symptom. ResultsThe agronomic traits, like plant height, leaf number, stalk nod number, and tiller number, declined in chlorotic sugarcane. The chlorophyll content in chlorosis leaves was significantly lower than non-chlorotic leaves. A total of 11,776 differentially expressed genes (DEGs) were discovered in transcriptome analysis. In the KEGG enriched chlorophyll metabolism pathway, sixteen DEGs were found, eleven of which were down-regulated. Two photosynthesis pathways were also enriched, with 32 genes downregulated and four genes upregulated. Among the 81 enriched GO biological processes, there were four categories related to metal ion homeostasis and three related to metal ion transport. Approximately 400 metabolites were identified in metabolome analysis. The thirteen classified differentially expressed metabolites (DEMs) were found all down-regulated. The phenylpropanoid biosynthesis pathway was enriched in DEGs and DEMs, indicating phenylpropanoids' vital role in chlorosis. ConclusionsAccording to our study, chlorophyll production, metal ion metabolism, photosynthesis, and some secondary metabolites of the phenylpropanoid biosynthesis pathway, were considerably altered in chlorotic ratoon sugarcane. Our finding revealed the relation between chlorosis and these pathways, which would further the understanding of the mechanism of ratoon sugarcane chlorosis.

scholarly journals Selenium Regulates Gene Expression for Glucosinolate and Carotenoid Biosynthesis in Arabidopsis

2011 ◽  
Vol 136 (1) ◽  
pp. 23-34 ◽  
Author(s):  
Carl E. Sams ◽  
Dilip R. Panthee ◽  
Craig S. Charron ◽  
Dean A. Kopsell ◽  
Joshua S. Yuan
Keyword(s):  
Gene Expression ◽  
Differentially Expressed Genes ◽  
Plant Species ◽  
Chlorophyll Biosynthesis ◽  
Plant Secondary Metabolites ◽  
Carotenoid Biosynthesis ◽  
Differentially Expressed ◽  
Biosynthesis Pathway ◽  
Tissue Samples ◽  
Expression Of Genes

Glucosinolates (GSs) and carotenoids are important plant secondary metabolites present in several plant species, including arabidopsis (Arabidopsis thaliana). Although genotypic and environmental regulation of GSs and carotenoid compounds has been reported, few studies present data on their regulation at the molecular level. Therefore, the objective of this study was to explore differential expression of genes associated with GSs and carotenoids in arabidopsis in response to selenium fertilization, shown previously to impact accumulations of both classes of metabolites in Brassica species. Arabidopsis was grown under 0.0 or 10.0 μM Na2SeO4 in hydroponic culture. Shoot and root tissue samples were collected before anthesis to measure GSs and carotenoid compounds and conduct gene expression analysis. Gene expression was determined using arabidopsis oligonucleotide chips containing more than 31,000 genes. There were 1274 differentially expressed genes in response to selenium (Se), of which 516 genes were upregulated. Ontology analysis partitioned differentially expressed genes into 20 classes. Biosynthesis pathway analysis using AraCyc revealed that four GSs, one carotenoid, and one chlorophyll biosynthesis pathways were invoked by the differentially expressed genes. Involvement of the same gene in more than one biosynthesis pathway indicated that the same enzyme may be involved in multiple GS biosynthesis pathways. The decrease in carotenoid biosynthesis under Se treatment occurred through the downregulation of phytoene synthase at the beginning of the carotenoid biosynthesis pathway. These findings may be useful to modify the GS and carotenoid levels in arabidopsis and may lead to modification in agriculturally important plant species.

scholarly journals Metabolic and transcriptional elucidation of the carotenoid biosynthesis pathway in peel and flesh tissue of loquat fruit during on-tree development

2017 ◽  
Vol 17 (1) ◽  
Author(s):  
Margarita Hadjipieri ◽  
Egli C. Georgiadou ◽  
Alicia Marin ◽  
Huertas M. Diaz-Mula ◽  
Vlasios Goulas ◽  
...  
Keyword(s):  
Carotenoid Biosynthesis ◽  
Biosynthesis Pathway ◽  
Carotenoid Biosynthesis Pathway ◽  
Tree Development
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