Return to the Organic Gardening Forum | Post a Follow-Up

 o
Plants defending themselves against predators...

Posted by anney Georgia 8 (My Page) on
Sat, Jan 23, 10 at 7:21

Yet another case reported here.

It is not a perfect situation, the relationship between coyote tobacco and hawkmoths.... the hawkmoth [pollinating the plant] has this habit of leaving behind its eggs, which develop into caterpillars that like nothing better than to eat the plant.... [In a tricky maneuver] it shifts the time of its flowering to mornings and attracts a different pollinator, a hummingbird.

"Nobody had actually noticed this before," said Ian T. Baldwin, director of the institute and senior author of the Current Biology paper. He said Danny Kessler, the lead author, was taking photographs one day of a plant that happened to be attacked by caterpillars. "Out of the blue, the flowers opened in the morning," he said.

Munching caterpillars produce oral secretions that "activate a whole series of defense responses," Dr. Baldwin said, including the production of toxins and protease inhibitors that decrease the caterpillars digestive ability. The change in flowering time, he said, "is a fourth major group of events that are activated by caterpillar attack."


Follow-Up Postings:

 o
RE: Plants defending themselves against predators...

Amazing.


 o
RE: Plants defending themselves against predators...

  • Posted by anney Georgia 8 (My Page) on
    Sat, Jan 23, 10 at 11:00

Here is another report of something similar I posted last year. But the plants mentioned in the link lure caterpillar-eating yellow jackets to help them out, and the time of flowers opening or closing is not involved as in the report above.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Organic Gardening Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here