ArticlePlanta2009
Amino acid metabolism at the maternal-filial boundary of young barley seeds: a microdissection-based study.
Article in Planta, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 36 citations in OpenAlex.
- Spatial distribution of proteins and metabolites in developing wheat grain and their differential regulatory response during the grain filling process.The Plant journal : for cell and molecular biology · 2021Article
- Nitrogen topdressing timing modifies free amino acids profiles and storage protein gene expression in wheat grain.BMC plant biology · 2018Article
- Grain yield and quality responses of wheat expressing a barley sucrose transporter to combined climate change factors.Journal of experimental botany · 2017Article
- Down-regulation of the sucrose transporters HvSUT1 and HvSUT2 affects sucrose homeostasis along its delivery path in barley grains.Journal of experimental botany · 2017Article
- Increasing abscisic acid levels by immunomodulation in barley grains induces precocious maturation without changing grain composition.Journal of experimental botany · 2016Article
- Laser Microdissection and Spatiotemporal Pinoresinol-Lariciresinol Reductase Gene Expression Assign the Cell Layer-Specific Accumulation of Secoisolariciresinol Diglucoside in Flaxseed Coats.Frontiers in plant science · 2016Article
- Differential transcriptional networks associated with key phases of ingrowth wall construction in trans-differentiating epidermal transfer cells of Vicia faba cotyledons.BMC plant biology · 2015Article
- Metabolic and transcriptional transitions in barley glumes reveal a role as transitory resource buffers during endosperm filling.Journal of experimental botany · 2015Article
- Expression patterns and protein structure of a lipid transfer protein END1 from Arabidopsis.Planta · 2014Article
- Gibberellin-to-abscisic acid balances govern development and differentiation of the nucellar projection of barley grains.Journal of experimental botany · 2014Article
- Spatio-temporal dynamics of fructan metabolism in developing barley grains.The Plant cell · 2014Article
- Development of endosperm transfer cells in barley.Frontiers in plant science · 2014Review
- A putative role for amino acid permeases in sink-source communication of barley tissues uncovered by RNA-seq.BMC plant biology · 2012Article
- Article
- Subtissue-specific evaluation of promoter efficiency by quantitative fluorometric assay in laser microdissected tissues of rapeseed.Plant physiology · 2011Article
- A novel procedure for the quantitative analysis of metabolites, storage products and transcripts of laser microdissected seed tissues of Brassica napus.Plant methods · 2011Article
- Seed-specific elevation of non-symbiotic hemoglobin AtHb1: beneficial effects and underlying molecular networks in Arabidopsis thaliana.BMC plant biology · 2011Article
- Article
- Increasing sucrose uptake capacity of wheat grains stimulates storage protein synthesis.Plant physiology · 2010Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The nucellar projection (NP)/endosperm transfer cell (ETC) complex represents the link between maternal and filial seed tissues in barley and mediates nutrient transfer into the endosperm. Cells of NP function as metabolic interface to precondition amino acid supply of the endosperm. The organ displays a top-down gradient of differentiation, with mitotically active, differentiating/elongating as well as disintegrating cells, characterized by proteolysis and nitrogen remobilization. To understand metabolism, interconversion and transfer of amino acids at the maternal-filial boundary, we applied a combined transcriptome and metabolite approach based on laser-assisted microdissection. Results suggest that amino acid degradation observed in NP largely occurs within mitochondria, consistent with their role in controlling amino acid homeostasis and metabolism. Differentially expressed genes and free amino acid levels associated with glutamate and glutamine metabolism indicate concerted action of glutamine dehydrogenase, glutamine synthetase and alanine:glyoxylate aminotransferase 2 within a hypothetical cycle for glutamine and alanine degradation and re-synthesis of the preferred transport form glutamine. Stimulation of gene expression involved in methionine metabolism in NP suggests a pathway of regulated synthesis of S-methylmethionine and a possible mechanism for the transfer of reduced sulphur from maternal tissues into the endosperm. Thus, the established micromethods revealed strategies in NP of young barley grains for mobilization and metabolism of transient N and S reserves and transfer into the endosperm.
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Registered trials
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