ArticleGenes & genomics2020
Identification of source-sink tissues in the leaf of Chinese cabbage (Brassica rapa ssp. pekinensis) by carbohydrate content and transcriptomic analysis.
Article in Genes & genomics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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Who cites it
8 citing papers in PubMed.
- Identification of Candidate Gene Networks Controlling Soluble Sugar Metabolism DuringFoods (Basel, Switzerland) · 2025Article
- Variations of Major Glucosinolates in Diverse Chinese Cabbage (International journal of molecular sciences · 2024Article
- De novo transcriptome assemblies of CBMC genomics · 2023Article
- Accumulation of Secondary Metabolites ofMetabolites · 2022Article
- Evaluation of Nutritional Substances and Investigation of Antioxidant and Antimicrobial Potentials ofMolecules (Basel, Switzerland) · 2022Article
- Single-cell transcriptome sequencing revealing the difference in photosynthesis and carbohydrate metabolism between epidermal cells and non-epidermal cells ofFrontiers in plant science · 2022Article
- Metabolite Profiling ofPlants (Basel, Switzerland) · 2021Article
- A source-sink model explains the difference in the metabolic mechanism of mechanical damage to young and senescing leaves in Catharanthus roseus.BMC plant biology · 2021Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundA leaf of Chinese cabbage (Brassica rapa ssp. pekinensis) is composed of a photosynthetic blade and a non-photosynthetic large midrib; thus each leaf contains both source and sink tissues. This structure suggests that, unlike in other plants, source-sink metabolism is present in a single leaf of Chinese cabbage.
objectiveThis study was designed to identify the transport route of photosynthetic carbon and to determine whether both source and sink tissues were present in a leaf.
methodsPlant samples were collected diurnally. Their carbohydrate contents were measured, and a genome-wide transcriptome analysis was performed using the Br300K microarray. Expression profiles of selected genes were validated using qRT-PCR analysis.
resultsThe presence of two contrasting tissues (blade as source and midrib as sink) in a leaf was demonstrated by (1) diurnal distribution patterns of starch and sucrose content; (2) Gene Ontology (GO) enrichment analysis of microarray data; (3) expression profiles of photosynthetic and sucrose biosynthetic genes; and (4) expression patterns of a variety of sugar transporter genes.
conclusionSource and sink tissues were both present in Chinese cabbage leaves, but the midrib functioned as a sink tissue as well as a site exporting to roots and other sink tissues. Function of most genes discriminating between source and sink tissue appeared to be regulated largely at the post-transcriptional level, not at the transcriptional level.
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