A Novel Pathway for Triacylglycerol Biosynthesis Is Responsible for the Accumulation of Massive Quantities of Glycerolipids in the Surface Wax of Bayberry (<i>Myrica pensylvanica</i>) Fruit

Simpson, Jeffrey P.; Ohlrogge, John B.

doi:10.1105/tpc.15.00900

Cited by 38 publications

(29 citation statements)

References 74 publications

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“…De novo synthesis of monoacylglycerol (MAG) in plant cells has been previously described [12,13] and was shown to be catalyzed by GPAT4 and GPAT6 enzymes, which use αω-dicarboxylic and ω-hydroxy acyl-CoA as acyl-donors for production of sn2-MAG [12,14]. The MAGs have been considered initially as precursors for synthesis of waxy polymers; however, their conversion to DAGs has been reported in Nicotiana bethamina leaves [14] and recently in fruits of Myrica pensylvanica [15].…”

Section: Tag Synthesis Pathways In Algaementioning

confidence: 99%

Stress-induced neutral lipid biosynthesis in microalgae — Molecular, cellular and physiological insights

Zienkiewicz

et al. 2016

Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biolog

165

103

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Photosynthetic microalgae have promise as biofuel feedstock. Under certain conditions, they produce substantial amounts of neutral lipids, mainly in the form of triacylglycerols (TAGs), which can be converted to fuels. Much of our current knowledge on the genetic and molecular basis of algal neutral lipid metabolism derives mainly from studies of plants, i.e. seed tissues, and to a lesser extent from direct studies of algal lipid metabolism. Thus, the knowledge of TAG synthesis and the cellular trafficking of TAG precursors in algal cells is to a large extent based on genome predictions, and most aspects of TAG metabolism have yet to be experimentally verified. The biofuel prospects of microalgae have raised the interest in mechanistic studies of algal TAG biosynthesis in recent years and resulted in an increasing number of publications on lipid metabolism in microalgae. In this review we summarize the current findings on genetic, molecular and physiological studies of TAG accumulation in microalgae. Special emphasis is on the functional analysis of key genes involved in TAG synthesis, molecular mechanisms of regulation of TAG biosynthesis, as well as on possible mechanisms of lipid droplet formation in microalgal cells. This article is part of a Special Issue entitled: Plant Lipid Biology edited by Kent D. Chapman and Ivo Feussner.

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Section: Tag Synthesis Pathways In Algaementioning

confidence: 99%

Stress-induced neutral lipid biosynthesis in microalgae — Molecular, cellular and physiological insights

Zienkiewicz

et al. 2016

Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biolog

165

103

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“…Article pathway of cutin triacylglycerols. 53 The authority role of a similar acyltransferase may indicate a similar function in stored apples.…”

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 99%

Contrasting Transcriptional Programs Control Postharvest Development of Apples (Malus x domestica Borkh.) Submitted to Cold Storage and Ethylene Blockage

Storch

Finatto

Bruneau

et al. 2017

J. Agric. Food Chem.

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Apple is commercially important worldwide. Favorable genomic contexts and postharvest technologies allow year-round availability. Although ripening is considered a unidirectional developmental process toward senescence, storage at low temperatures, alone or in combination with ethylene blockage, is effective in preserving apple properties. Quality traits and genome wide expression were integrated to investigate the mechanisms underlying postharvest changes. Development and conservation techniques were responsible for transcriptional reprogramming and distinct programs associated with quality traits. A large portion of the differentially regulated genes constitutes a program involved in ripening and senescence, whereas a smaller module consists of genes associated with reestablishment and maintenance of juvenile traits after harvest. Ethylene inhibition was associated with a reversal of ripening by transcriptional induction of anabolic pathways. Our results demonstrate that the blockage of ethylene perception and signaling leads to upregulation of genes in anabolic pathways. We also associated complex phenotypes to subsets of differentially regulated genes.

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“…Bayberry ( Myrica pensylvanica ) fruits synthesize an extremely thick and unusual layer of crystalline surface wax that accumulates up to 32% of dry fruit weight, the highest reported surface lipid accumulation in plants (Simpson and Ohlrogge, 2016 ). Recently, it was strikingly found that the surface wax is primarily composed of glycerolipids, notably triacylglycerol and diacylglycerol with saturated fatty acids.…”

Section: Introductionmentioning

confidence: 99%

De novo Assembly and Characterization of the Fruit Transcriptome of Idesia polycarpa Reveals Candidate Genes for Lipid Biosynthesis

Gao

et al. 2016

Front. Plant Sci.

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Idesia polycarpa, is a valuable oilseed-producing tree of the Flacourtiaceae family that has the potential to fulfill edible oil production and is also a possible biofuel feedstock. The fruit is unique in that it contains both saturated and unsaturated lipids present in pericarp and seed, respectively. However, triglyceride synthesis and storage in tissues outside of the seeds has been poorly studied in previous researches. To gain insight into the unique properties of I. polycarpa fruit lipid synthesis, biochemical, and transcriptomic approaches were used to compare the lipid accumulation between pericarp and seed of the fruit. Lipid accumulation rates, final lipid content and composition were significantly different between two tissues. Furthermore, we described the annotated transcriptome assembly and differential gene expression analysis generated from the pericarp and seed tissues. The data allowed the identification of distinct candidate genes and reconstruction of lipid pathways, which may explain the differences of oil synthesis between the two tissues. The results may be useful for engineering alternative pathways for lipid production in non-seed or vegetative tissues.

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A Novel Pathway for Triacylglycerol Biosynthesis Is Responsible for the Accumulation of Massive Quantities of Glycerolipids in the Surface Wax of Bayberry (Myrica pensylvanica) Fruit

Cited by 38 publications

References 74 publications

Stress-induced neutral lipid biosynthesis in microalgae — Molecular, cellular and physiological insights

Stress-induced neutral lipid biosynthesis in microalgae — Molecular, cellular and physiological insights

Contrasting Transcriptional Programs Control Postharvest Development of Apples (Malus x domestica Borkh.) Submitted to Cold Storage and Ethylene Blockage

De novo Assembly and Characterization of the Fruit Transcriptome of Idesia polycarpa Reveals Candidate Genes for Lipid Biosynthesis

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