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Zooming in on cells reveals patterns on their outer surfaces. These patterns are actually a collection of distinct areas of the cell surface, each containing specific combinations of molecules. The outer layers of pollen grains consist of a cell wall, and a softer cell membrane that sits underneath. As a pollen grain develops, it recruits certain fats and proteins to specific areas of the cell membrane, known as ‘aperture domains’. The composition of these domains blocks the cell wall from forming over them, leading to gaps in the wall called ‘pollen apertures’. Pollen apertures can open and close, aiding reproduction and protecting pollen grains from dehydration.
The number, location, and shape of pollen apertures vary between different plant species, but are consistent within the same species. In the plant species Arabidopsis thaliana, pollen normally develops three long and narrow, equally spaced apertures, but it remains unclear how pollen grains control the number and location of aperture domains.
Zhou et al. identified a group of proteins that help control the formation of domains in the cell membranes of A. thaliana pollen grains. Further research will be required to determine what exactly these proteins do to promote formation of aperture domains and whether similar proteins control domain development in other organisms.
Science Fiction and Fantasy are hugely popular genres. What does it take for a writer today, to write compelling and successful Science Fiction and Fantasy stories? Authority Magazine started a new…
Amal fellowship is the most beautiful journey of my life that is going to end within two weeks. I never thought that this fellowship would have a great impact on my life. My facilitators, my circle…
This post is a summary of my journey through (Google Summer of Code) GSOC and my interaction with the open-source community of Helikar Lab . I worked on a small project to visualize a way of drawing…