The DOI matches its Crossref record; 28 of the 28 references it cites were found in a registry or an index.
Two Cytosolic Glutamine Synthetase Isoforms of Maize Are Specifically Involved in the Control of Grain Production
Open accessAbstract
The roles of two cytosolic maize glutamine synthetase isoenzymes (GS1), products of the Gln1-3 and Gln1-4 genes, were investigated by examining the impact of knockout mutations on kernel yield. In the gln1-3 and gln1-4 single mutants and the gln1-3 gln1-4 double mutant, GS mRNA expression was impaired, resulting in reduced GS1 protein and activity. The gln1-4 phenotype displayed reduced kernel size and gln1-3 reduced kernel number, with both phenotypes displayed in gln1-3 gln1-4. However, at maturity, shoot biomass production was not modified in either the single mutants or double mutants, suggesting a specific impact on grain production in both mutants. Asn increased in the leaves of the mutants during grain filling, indicating that it probably accumulates to circumvent ammonium buildup resulting from lower GS1 activity. Phloem sap analysis revealed that unlike Gln, Asn is not efficiently transported to developing kernels, apparently causing reduced kernel production. When Gln1-3 was overexpressed constitutively in leaves, kernel number increased by 30%, providing further evidence that GS1-3 plays a major role in kernel yield. Cytoimmunochemistry and in situ hybridization revealed that GS1-3 is present in mesophyll cells, whereas GS1-4 is specifically localized in the bundle sheath cells. The two GS1 isoenzymes play nonredundant roles with respect to their tissue-specific localization.
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In Posidonia oceanica cadmium induces changes in DNA methylation and chromatin patterning
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Identifying traits to improve the nitrogen economy of wheat: Recent advances and future prospects
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Leaf nitrogen remobilisation for plant development and grain filling
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Metadata
- Authors
- Martin, A., Lee, J., Kichey, T., Gerentes, D., Zivy, M., Tatout, C., Dubois, F., Balliau, T., Valot, B., Davanture, M., Tercé-Laforgue, T., Quilleré, I., Coque, M., Gallais, A., Gonzalez-Moro, M.-B., Bethencourt, L., Habash, D. Z., Lea, P. J., Charcosset, A., Perez, P., Murigneux, A., Sakakibara, H., Edwards, K. J., & Hirel, B.
- Venue
- The Plant Cell
- Publisher
- Oxford University Press (OUP)
- Published
- 2006-11-01
- Volume
- 18
- Issue
- 11
- Pages
- 3252-3274
- ISSN
- 1040-4651 (ISSN-L)
- 1532-298X
- OpenAlex
- W2046941968
- Cited by
- 512
- References
- 28
- FWCI
- 18.59
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- The paper
- Martin, A., Lee, J., Kichey, T., Gerentes, D., Zivy, M., Tatout, C., Dubois, F., Balliau, T., Valot, B., Davanture, M., Tercé-Laforgue, T., Quilleré, I., Coque, M., Gallais, A., Gonzalez-Moro, M.-B., Bethencourt, L., Habash, D. Z., Lea, P. J., Charcosset, A., . . . Hirel, B. (2006). Two Cytosolic Glutamine Synthetase Isoforms of Maize Are Specifically Involved in the Control of Grain Production. The Plant Cell. https://doi.org/10.1105/tpc.106.042689
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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