Full-length transcriptome assembly and RNA-Seq integration of diploid and tetraploid ryegrass to investigate differences in cd uptake and accumulation among ryegrass with different ploidy levels.

ABSTRACT:

Background

The accumulation of cadmium (Cd) in ryegrass (Lolium multiflorum Lamk.) as a widely used pasture plant poses a serious risk to food safety. This study aimed to investigate the differences in phenotypes, physiology, and expression of metal transporters between four ryegrass genotypes (diploid/tetraploid and Cd-tolerant/sensitive).

Results

The diploid/Cd-sensitive genotypes were found to uptake, accumulate, and translocate more Cd compared to the tetraploid/Cd-tolerant genotypes. Cd with more soluble components facilitated the transfer of Cd from root to shoot in the sensitive genotypes. Tetraploid and Cd-tolerant Chuansi No.1 accumulated less Cd in shoots but higher ratio in root cell wall, making it a promising model for studying the mechanisms of plant resistance

SUBMITTER: Yang X 

PROVIDER: S-EPMC11812225 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature