Feeling the (pollen tube) force

If you think about a pollen grain that, after all of that bee-hitchhiking, has landed on the sweet stigma of the right flower, you might think that it has finally arrived. But from the pollen grain’s point of view its active struggle has just started – it now has to penetrate through the stigma tissue to localise and fertilise the ovule. Most of the research carried out on thi...
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