A little while ago we looked at auxotrophic algae getting a helping hand from bacteria; now we’ll take a look at ‘proper plants’ that get a little help from animals (in a sort of mixotrophy). But it’s not exactly willing on the animal’s part! We talk of those amazing angiosperms known as carnivorous plants (‘the [...]
Posts Tagged “cell biology”
The genome size and organization of the important medicinal plant Catharanthus roseus is shown to correspond to 1C = 0.76 pg (~738 Mbps) and 2n=16 chromosomes. The data in this recently published paper provide a sound basis for future studies including cytogenetic mapping, genomics and breeding.
The vacuole is the largest organelle of a plant cell. It accumulates proteins, ions and secondary metabolites while providing turgor for cell growth via water content. It is also a major site for the degradation of macromolecules. A full understanding of the vacuole’s roles in salt and metal ion accumulation and water uptake are hot [...]
Innovative MTOCs organize mitotic spindles in bryophytes, the earliest extant lineages of land. Triple staining of γ-tubulin, microtubules, and nuclei here reveal that three types of MTOCs initiate spindles in bryophytes. Polar organizers in liverworts and plastid MTOCs in hornworts are unique and nuclear envelope MTOCs in mosses appear like those in seed plants. Roy C. [...]
Notwithstanding the centuries we’ve spent peering at, poking, prodding and penetrating the inner workings of plant cells with various types of microscopes and decades undertaking investigations at the sub-cellular level, there are still new discoveries to be made. Here are two, united by the theme of cell–cell transport. First, the recent revelation by Deborah Barton [...]