ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2026
Fine mapping and candidate gene analysis of tassel glume closure1 (tgc1) gene in maize (Zea mays L.).
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
key messageThe tassel glume closure1 (tgc1) mutant was identified and mapped, and ZmKAO1, which encodes an ent-kaurenoic acid oxidase, is the key candidate gene. Tassel glume timely opening is a key trait that influences cross-pollination and hybrid breeding. However, in maize (Zea mays L.), the related genes regulating this process remain largely unexplored. Here, we identified tassel glume closure1 (tgc1), a recessive mutant that exhibits tassel glume closure, anther non-extrusion, and no pollen shedding at the adult-plant stage. Anatomical and scanning electron microscopy (SEM) observations revealed that the tgc1 mutant phenotype is caused by the hindrance of filament elongation and lodicule swelling. We mapped the tgc1 locus and determined that Zm00001eb379120, which encodes ent-kaurenoic acid oxidase1 (ZmKAO1), is the key candidate gene of tgc1. Transcriptome analysis revealed that gibberellin (GA) biosynthesis was disrupted in tgc1 tassel, and exogenous application of GA
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