ArticleJournal of experimental botany2015
Down-regulation of a LBD-like gene, OsIG1, leads to occurrence of unusual double ovules and developmental abnormalities of various floral organs and megagametophyte in rice.
Article in Journal of experimental botany, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.
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41 citing papers in PubMed, 68 citations in OpenAlex.
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- Comprehensive Characterization and Functional Analysis of the Lateral Organ Boundaries Domain Gene Family in Rice: Evolution, Expression, and Stress Response.International journal of molecular sciences · 2025Article
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- Allele-Specific Hormone Dynamics in Highly Transgressive F2 Biomass Segregants in Sugarcane (Plants (Basel, Switzerland) · 2024Article
- Characterization and expression profiles of the ZmLBD gene family in Zea mays.Molecular biology reports · 2024Article
- Comparing time-series transcriptomes between chilling-resistant and -susceptible rice reveals potential transcription factors responding to chilling stress.Frontiers in plant science · 2024Article
- OsmiRNA5488 Regulates the Development of Embryo Sacs and TargetsInternational journal of molecular sciences · 2023Article
- Haploid Induction inPlants (Basel, Switzerland) · 2023Review
- Comprehensive study of rice YABBY gene family: evolution, expression and interacting proteins analysis.PeerJ · 2023Article
- Recent Advances in Engineering of In Vivo Haploid Induction Systems.Methods in molecular biology (Clifton, N.J.) · 2023Article
- Overexpression ofFrontiers in plant science · 2022Article
- Article
- Multiple and integrated functions of floral C-class MADS-box genes in flower and fruit development of Physalis floridana.Plant molecular biology · 2021Article
- Ectopic expression of Triticum polonicum VRT-A2 underlies elongated glumes and grains in hexaploid wheat in a dosage-dependent manner.The Plant cell · 2021Article
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7 authors at 3 institutions in 1 country.
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Abstract
The indeterminate gametophyte1 (ig1) mutation was first characterized to modulate female gametophyte development in maize (Zea mays). However, the function of its rice orthologue, OsIG1, remains unknown. For this, we first analysed OsIG1 localization from differential tissues in rice. Real-time quantitative PCR (qRT-PCR) and histochemical staining results demonstrated that the expression signal of OsIG1 was strongly detected in young inflorescence, moderately in mature flower and weakly in leaf. Furthermore, RNA in situ hybridization analyses exhibited that OsIG1 was strongly expressed in inflorescence meristems, floral meristems, empty-glume- and floret- primordia, especially in the primordia of stamens and immature ovules, and the micropylar side of the mature ovary. In OsIG1-RNAi lines, wrinkled blade formation was accompanied by increased leaf inclination angle. Cross-section further showed that the number of bulliform cells located between the vasculatures was significantly increased, indicating that OsIG1 is involved in division and differentiation of bulliform cell and lateral growth during leaf development. OsIG1-RNAi suppression lines showed pleiotropic phenotypes, including degenerated palea, glume-like features and open hull. In addition, a single OsIG1-RNAi floret is characterized by frequently developing double ovules with abnormal embryo sac development. Additionally, down-regulation of OsIG1 differentially affected the expression of genes associated with the floral organ development including EG1, OsMADS6 and OsMADS1. Taken together, these results demonstrate that OsIG1 plays an essential role in the regulation of empty-glume identity, floral organ number control and female gametophyte development in rice.
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