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During rice seed storage, lipid hydrolysis and oxidation in the embryo generate off-flavors. This Commentary examines a study by Wang et al., who demonstrated that manipulating OsBZR4 in various rice cultivars induces a high proportion of embryoless seeds by altering auxin levels and spatial distribution during early embryogenesis-a process intensified under elevated temperatures.
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http://dx.doi.org/10.1111/jipb.70028 | DOI Listing |
J Integr Plant Biol
August 2025
State Key Laboratory of Plant Trait Design, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academic of Sciences, Shanghai, 200032, China.
During rice seed storage, lipid hydrolysis and oxidation in the embryo generate off-flavors. This Commentary examines a study by Wang et al., who demonstrated that manipulating OsBZR4 in various rice cultivars induces a high proportion of embryoless seeds by altering auxin levels and spatial distribution during early embryogenesis-a process intensified under elevated temperatures.
View Article and Find Full Text PDFNat Commun
July 2025
Northeast Institute of Geography and Agroecology, State Key Laboratory of Black Soils Conservation and Utilization, Key Laboratory of Soybean Molecular Design Breeding, Chinese Academy of Sciences, Harbin, China.
Embryoless rice is valuable for studying early seed development and has great breeding potential, however, related research remains limited. Here, we show that mutations in OsBZR4, encoding brassinazole-resistance 4, lead to 60-100% embryoless seeds across different cultivars. OsBZR4 is specifically expressed at the scutellum-endosperm interface and regulates auxin levels and distribution during early embryo development.
View Article and Find Full Text PDFBMC Plant Biol
July 2025
Guangdong Key Laboratory of Crop Germplasm Resources Preservation and Utilization, Agro-biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China.
Background: Embryo development holds a pivotal position in the ontogenesis and morphogenesis of rice plants, exerting a direct influence on plant growth and ultimately determining rice yield. Glutaredoxin, an abundant oxidoreductase, plays a crucial role across many facets of plant growth. Our research has uncovered that OsGrxC2.
View Article and Find Full Text PDFPlanta
April 2025
Laboratory of Growth Regulators, Institute of Experimental Botany and Palacký University Olomouc, 78371, Olomouc, Czech Republic.
Two papers with quite different objectives established protocols that proved pivotal for future work on the role of gibberellins in seed germination. In their paper published in 1967, Russell Jones and Joseph Varner (Planta 72: 155-161) developed a bioassay based on induction of α-amylase activity in barley embryo-less half-seeds that was specific for bioactive gibberellins. The induction of α-amylase in the aleurone of barley and other cereals was to become the experimental system of choice to study gibberellin signalling.
View Article and Find Full Text PDFGenes (Basel)
June 2024
Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA.