ArticleBMC plant biology2014
Starch biosynthetic genes and enzymes are expressed and active in the absence of starch accumulation in sugar beet tap-root.
Article in BMC plant biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 38 citations in OpenAlex.
- Regulatory factors of starch metabolism in cereal endosperm.Plant molecular biology · 2026Review
- Variation analysis using random forests reveals domestication patterns and breeding trends in sugar beet.iScience · 2025Article
- Effects of a novel fulvic acid-enriched water-soluble fertilizer on potato growth, yield, and water-fertilizer use efficiency under different drip irrigation regimes.Frontiers in plant science · 2025Article
- Understanding the triacylglycerol-based carbon anabolic differentiation in Cyperus esculentus and Cyperus rotundus developing tubers via transcriptomic and metabolomic approaches.BMC plant biology · 2024Article
- Structure and Expression Analysis ofInternational journal of molecular sciences · 2023Article
- The Cultivation Method Affects the Transcriptomic Response of Aspergillus niger to Growth on Sugar Beet Pulp.Microbiology spectrum · 2021Article
- Cold-Triggered Induction of ROS- and Raffinose Metabolism in Freezing-Sensitive Taproot Tissue of Sugar Beet.Frontiers in plant science · 2021Article
- Integrative transcriptomics reveals genotypic impact on sugar beet storability.Plant molecular biology · 2020Article
- Vernalization Alters Sink and Source Identities and Reverses Phloem Translocation from Taproots to Shoots in Sugar Beet.The Plant cell · 2020Article
- Early-stage sugar beet taproot development is characterized by three distinct physiological phases.Plant direct · 2020Article
- Transcriptome analysis of sugar beet (Beta vulgaris L.) in response to alkaline stress.Plant molecular biology · 2020Article
- Glycolysis Is Dynamic and Relates Closely to Respiration Rate in Stored Sugarbeet Roots.Frontiers in plant science · 2017Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundStarch is the predominant storage compound in underground plant tissues like roots and tubers. An exception is sugar beet tap-root (Beta vulgaris ssp altissima) which exclusively stores sucrose. The underlying mechanism behind this divergent storage accumulation in sugar beet is currently not fully known. From the general presence of starch in roots and tubers it could be speculated that the lack in sugar beet tap-roots would originate from deficiency in pathways leading to starch. Therefore with emphasis on starch accumulation, we studied tap-roots of sugar beet using parsnip (Pastinaca sativa) as a comparator.
resultsMetabolic and structural analyses of sugar beet tap-root confirmed sucrose as the exclusive storage component. No starch granules could be detected in tap-roots of sugar beet or the wild ancestor sea beet (Beta vulgaris ssp. maritima). Analyses of parsnip showed that the main storage component was starch but tap-root tissue was also found to contain significant levels of sugars. Surprisingly, activities of four main starch biosynthetic enzymes, phosphoglucomutase, ADP-glucose pyrophosphorylase, starch synthase and starch branching enzyme, were similar in sugar beet and parsnip tap-roots. Transcriptional analysis confirmed expression of corresponding genes. Additionally, expression of genes involved in starch accumulation such as for plastidial hexose transportation and starch tuning functions could be determined in tap-roots of both plant species.
conclusionConsidering underground storage organs, sugar beet tap-root upholds a unique property in exclusively storing sucrose. Lack of starch also in the ancestor sea beet indicates an evolved trait of biological importance.Our findings in this study show that gene expression and enzymatic activity of main starch biosynthetic functions are present in sugar beet tap-root during storage accumulation. In view of this, the complete lack of starch in sugar beet tap-roots is enigmatic.
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