Comparative gametogenesis and genomic signatures associated with pollen sterility in the seedless mutant of grapevine.

ABSTRACT:

Background

Seedless grapes are in high demand for fresh and dry fruit consumption. Seedlessness in grapes (Vitis vinifera L.) is triggered by two different mechanisms: stenospermocarpy and parthenocarpy. However, the key regulators of seed development and their targets in grapes are not well characterized. The present study used the seeded grape hybrid ARI 516 and its seedless mutant to understand the molecular mechanisms controlling the seedless phenotype in grapes.

Results

Gametogenesis studies demonstrated that the seedless mutant exhibits pollen sterility due to abnormal pollen morphology, significantly low viability, and a complete lack of germination ability. The macrogametophyte in the seedless mutant was significantly smaller than in ARI 516. Transcriptomic compariso

SUBMITTER: Chavan S 

PROVIDER: S-EPMC11789394 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature