Heat stress impairs centromere structure and segregation of meiotic chromosomes in Arabidopsis.

ABSTRACT: Heat stress is a major threat to global crop production, and understanding its impact on plant fertility is crucial for developing climate-resilient crops. Despite the known negative effects of heat stress on plant reproduction, the underlying molecular mechanisms remain poorly understood. Here, we investigated the impact of elevated temperature on centromere structure and chromosome segregation during meiosis in Arabidopsis thaliana. Consistent with previous studies, heat stress leads to a decline in fertility and micronuclei formation in pollen mother cells. Our results reveal that elevated temperature causes a decrease in the amount of centromeric histone and the kinetochore protein BMF1 at meiotic centromeres with increasing temperature. Furthermore, we show that heat stress inc

SUBMITTER: Crhak Khaitova L 

PROVIDER: S-EPMC11023694 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature