Heat stress reveals a specialized variant of the pachytene checkpoint in meiosis of Arabidopsis thaliana.

ABSTRACT: Plant growth and fertility strongly depend on environmental conditions such as temperature. Remarkably, temperature also influences meiotic recombination and thus, the current climate change will affect the genetic make-up of plants. To better understand the effects of temperature on meiosis, we followed male meiocytes in Arabidopsis thaliana by live cell imaging under three temperature regimes: at 21°C; at heat shock conditions of 30°C and 34°C; after an acclimatization phase of 1 week at 30°C. This work led to a cytological framework of meiotic progression at elevated temperature. We determined that an increase from 21°C to 30°C speeds up meiosis with specific phases being more amenable to heat than others. An acclimatization phase often moderated this effect. A sudden increase to 34°C p

SUBMITTER: De Jaeger-Braet J 

PROVIDER: S-EPMC8846176 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature