TaPP2C-a6 interacts with TaDOG1Ls and regulates seed dormancy and germination in wheat.

ABSTRACT: Modern wheat cultivation requires seed to germinate rapidly and uniformly with weak dormancy. However, such varieties tend to undergo pre-harvest sprouting (PHS) if the harvest overlaps with the rainy season, causing substantial yield losses. Knowledge regarding the mechanisms of seed dormancy in wheat (Triticum aestivum L.) is limited, with only a few causal genes of the many PHS quantitative trait loci (QTLs) characterized. Here, we emphasize the involvement of ABA signalling core components in regulating seed dormancy and germination in wheat. TaPP2C-a6 was identified as the likely causal gene of wheat PHS-QTLs QPhs.wsu-1A/1B and QPhs1D.1_nwafu loci. Both TaPP2C-a6 and TaPP2C-a7 were highly expressed at embryonic developmental stages and germinating seeds, whereas TaPP2C-a6 was up-regul

SUBMITTER: Zhang Q 

PROVIDER: S-EPMC12310832 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature