Identification of different cDNA clones of the Apomixis-specific gene-1 homolog involved in aposporous embryo sac formation in guineagrass (Panicum maximum Jacq.)
Lanzhuang Chen, Liming Guan, Taiji Adachi · 2026
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Description
Lanzhuang Chen, Liming Guan, and Taiji Adachi hunted for the gene behind apomixis in guineagrass, a trait that could transform plant breeding. Their 2026 study explains the prize: apomixis passes only the mother's genes to the next generation, so fixing hybrid vigor in seed could slash seed production costs. The team aimed to isolate the aposporous apomixis gene and trace how it is expressed in aposporous guineagrass.
They devised a new staging method using ovary length to sample ovaries and buds at matching developmental stages in sexual plants and apomicts. From a cDNA library built at the stage when aposporous initial cells appear, differential screening yielded four stage-specific clones, 577 to 1,182 base pairs long, matching the apomixis-specific gene ASG-1. Signals appeared in initial cells, derived embryo sacs, root tips, and shoot meristems, marking a first step toward isolating an apospory gene.
Catalog record
| CREATOR | Lanzhuang Chen, Liming Guan, Taiji Adachi |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 41 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |