Spore does suspiciously good impression of YMCA.

In my PhD interview, an (unofficial) question was asked of me; ‘What is your favourite plant?’ It’s a question I always struggle to find an answer for, partially because I’m chronically indecisive, but mainly because there are just too many exciting plants to choose from. I ended up blurting out that I liked Equisetum, because I had recently observed its spores. I did an impression. Of a spore. In an interview. (It worked, by the way).

Equisetum telmateia (Riesen-Schachtelhalm)

Here’s a picture of an Equisetum, or Horsetail. You might recognise it as it is a common garden weed. It’s fun to play with. Image from WikiCommons.

So what was it about impersonating the reproductive unit of a fern-relative that got me the job? Well, Equisetum plants produce spores that have four little arms, called ‘elators’. When the spores are in dry conditions, the little arms are unfurled, like the spore is asking for a hug. When, however, they encounter wet conditions, they curl right up. And no, it doesn’t happen so slowly that we can only see it with fancy sped-up film footage, it happens so fast that you can induce it just by huffing on the spores. As you can hear from this video, when I first observed this during a practical class I thought it was The Best Thing In The World. In fact, I still do.

Why do they do this? The science points to dispersal- it can help them get off the ground into the wind, or fall back to the ground, or get away from their spore-y brethren, but I reckon that really, they just like to dance.

If you’re interested, there’s a pretty cool paper written on the subject.

Advertisements

About adelecmj

I'm a PhD student at the Open University, where I study pollen-vegetation relationships in Ghana. I like plants, rocks, and science in general.
This entry was posted in Uncategorized. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s