Onion Root Tip
May 29, 2018 • 2:53 PM UTC
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140x Magnification
Microorganisms
zakrah
Sarah Swanson, is Director of the Newcomb Imaging Center (NIC) at the University of Wisconsin - Madison. Previously she sreceived her PhD at the University of California, Berkeley. Sarah studied Botany and Music at UW-Madison as and undergraduate and worked as a postdoc in the Biology Department at PennState University. Currently she splits her time between assisting other researchers in the NIC and working in the Gilroy Lab studying plant cell signal transduction following hormonal or mechanical stimuli.
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Here’s the first foldscope image I’ve ever taken. It is a prepared slide of an onion root tip, stained with acetocarmine to visualise the chromosomes.
The onion root tip is a great sample to observe the stages of mitosis, however, most of the division is occurring a bit farther back along the root than where I took this image. The root cap itself is the location of cells that can sense gravity, and so when I took this image I was instead focussing on the cells involved in graviperception.
Images taken November 4, 2017 at University of Wisconsin -Madison, WID Foldscope Teacher Workshop
The onion root tip is a great sample to observe the stages of mitosis, however, most of the division is occurring a bit farther back along the root than where I took this image. The root cap itself is the location of cells that can sense gravity, and so when I took this image I was instead focussing on the cells involved in graviperception.
Images taken November 4, 2017 at University of Wisconsin -Madison, WID Foldscope Teacher Workshop
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