Generation and maintenance of diversity of life history and sexual systems
Unlike vascular plants, in mosses it is the gametophyte that is long-lived and the ephemeral sporophyte is physically dependent upon it. Sex organs are expressed in the gametophyte stage and controlled by a non-recombining sex chromosome pair; a unique chromosome in each sex. Although a balanced sex ratio based on sex chromosomes (genotypic sex) is expected in spores after meiosis, S. caninervis is notable for its extremely strong sex ratio bias, often with more than 10 females for every one male, based on the presence of sex organs (phenotypic sex). In most populations, more than 80% of the individuals do not produce sex organs and thus their genotypic sex and the true population sex ratio are obscured.
- BOTANY 2022 in Anchorage, Alaska
- A trip to Washington, D.C.
- Genotypic confirmation of a biased phenotypic sex ratio in a dryland moss using restriction fragment length polymorphisms
- Transcriptomic effects of acute ultraviolet radiation exposure on two 𝙎𝙮𝙣𝙩𝙧𝙞𝙘𝙝𝙞𝙖 mosses
- Natural ultraviolet radiation exposure alters photosynthetic biology and improves recovery from desiccation in a desert moss