The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.
The homeotic gene long sterile lemma ( G1 ) specifies sterile lemma identity in the rice spikelet
Open accessAbstract
The mechanism of floral organ specification is principally conserved in angiosperms, as demonstrated by the ABC model. By contrast, mechanisms that regulate the development of organs or structures specific to a group of species remain unclear. Grasses have unique inflorescence units, comprising spikelets and florets. In the genus Oryza (rice), the single spikelet consists of a fertile floret subtended by a lemma and a palea, two sterile lemmas, and rudimentary glumes. Each sterile lemma is a tiny glume-like organ with a smooth surface. Here, we have examined a long sterile lemma1 ( g1 ) mutant, in which the sterile lemma is enlarged like the lemma. Detailed phenotypic analysis reveals that the large sterile lemma in the g1 mutant appears to be caused by homeotic transformation of the sterile lemma into a lemma, suggesting that G1 is involved in the repression of lemma identity to specify the sterile lemma. Gene isolation reveals that G1 is a member of a plant-specific gene family that encodes proteins with a previously uncharacterized domain, named here ALOG ( Arabidopsis LSH1 and Oryza G1 ). G1 mRNA is expressed in sterile lemma primordia throughout their development, and G1 protein is localized in the nucleus. A trans-activation assay using the yeast GAL4 system suggests that G1 is involved in transcriptional regulation. Repression of lemma identity by G1 is consistent with a hypothesis proposed to explain the morphological evolution of rice spikelets. We also show that a wild rice species, Oryza grandiglumis , that forms large sterile lemmas has serious mutations in the G1 gene.
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“| LSH3/4 | G1 (rice) | ALOG | Only gain-of-function | SAM and lateral organs | Takeda et al. (2011); Cho & Zam- |”
From Divide et impera: boundaries shape the plant body and initiate new meristems (2016) · cites this paper as Yoshida et al. (2009)
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“Multiple genes, including G1 (Elongated Empty Glume) and OsMADS34, are required for lemma identity (Yoshida et al., 2009; Gao et al., 2010; Hong et al., 2010), and mutation of key floral regulator genes disrupts the morphology of the palea and lemma, for instance, in the leafy hull sterile1/osmads1…”
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“G1/ELE defines spikelet morphology by specifying sterile lemma identity, and g1/ele mutants exhibit a homeotic conversion of sterile lemma to lemma-like structures (53, 155).”
BackgroundThe SEPALLATA-Like Gene OsMADS34 Is Required for Rice Inflorescence and Spikelet Development
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“The G1/ELE expression is detectable in sterile lemma primordia throughout their development, suggesting that G1/ELE is key regulator for repressing lemma identity at the sterile lemma positions during rice spikelet development (Yoshida et al., 2009; Hong et al., 2010).”
Background
Metadata
- Authors
- Yoshida, A., Suzaki, T., Tanaka, W., & Hirano, H.-Y.
- Affiliations
- The University of Tokyo (JP)
- University of California San Diego (US)
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Tokyo 113-8654, Japan
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 2009-11-24
- Volume
- 106
- Issue
- 47
- Pages
- 20103-20108
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC2775035
- OpenAlex
- W2032677611
- Semantic Scholar
- 82ab49c65d5a71c52986815cb49faa36656b9119
- Cited by
- 194
- References
- 47
- Citations by year
- 2026: 5 · 2025: 13 · 2024: 33 · 2023: 18 · 2022: 13 · 2021: 7 · 2020: 15 · 2019: 20 · 2018: 10 · 2017: 9 · 2016: 9 · 2015: 6 · 2014: 10 · 2013: 9 · 2012: 7
- FWCI
- 6.88
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Ministry of Education, Culture, Sports, Science and Technology
- Japan Science Society
- Japan Society for the Promotion of Science (20061006, 20380005)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Genetic and Mutation Studies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
- Keywords
- homeotic transformation, transcriptional regulation, Oryza grandiglumis, floral organ specification, rice
- MeSH terms
- Genes, Homeobox, Mutation, Phenotype, Phylogeny, Plant Proteins, Oryza, Genes, Plant, Gene Expression Regulation, Plant, Flowers
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