sea

Seagrasses cheat on sex!

Survival at geographic range edges, where organisms are often at the limits of their physiological tolerances, can trigger unusual responses in reproduction.

sea
Image copyright: potowizard / 123RF Stock Photo

Sinclair et al. describe the first observations of pseudoviviparous shoots in the marine angiosperm, Posidonia australis. Unfertilized flowers cheated and ‘switched’ to plantlet development. Multilocus genotypes showed these plantlets were genetically identical to their maternal parent. However, additional alleles in many genotypes were detected, suggesting somatic mutations or hybridization events. Low genetic diversity and failed sexual reproduction suggest both genetic and ecological constraints limit the ability of this meadow to adapt or range shift under changing climate regimes.

botanyone

The Annals of Botany Office is based at the University of Oxford.

Read this in your language

The Week in Botany

On Monday mornings we send out a newsletter of the links that have been catching the attention of our readers on Twitter and beyond. You can sign up to receive it below.

@BotanyOne on Mastodon

Loading Mastodon feed...

Audio


Archive