The secret life of smoke in fostering rebirth and renewal of burned landscape

Jan 27, 2010
Smoke from forest fires contains substances that regulate seed germination and appear to play a key role in the rebirth and renewal of burned landscape. Credit: iStock

The innermost secrets of fire's role in the rebirth and renewal of forests and grasslands are being revealed in research that has identified plant growth promoters and inhibitors in smoke. In the latest discovery about smoke's secret life, an international team of scientists are reporting discovery of a plant growth inhibitor in smoke. The study appears in ACS's Journal of Natural Products.

"Smoke plays an intriguing role in promoting the germination of seeds of many species following a fire," Johannes Van Staden and colleagues point out in the report. They previously discovered a in smoke from burning plants that promotes . Such seeds, which remain in the undercover on and meadow floors after fires have been extinguished, are responsible for the surprisingly rapid regrowth of fire-devastated landscapes.

In their new research, the scientists report discovery of an inhibitor compound that may block the action of the stimulator, preventing germination of seeds. They suspect that the compounds may be part of a carefully crafted natural regulatory system for repopulating fire-ravaged landscapes. Interaction of these and other compounds may ensure that seeds remain dormant until environmental conditions are best for germination. The inhibitor thus may delay germination of seeds until moisture and temperature are right, and then take a back seat to the germination promoter in smoke.

Explore further: Research team announces new class of compounds that appear to be effective against malaria

More information: "Butenolides from Plant-Derived Smoke: Natural Plant-Growth Regulators with Antagonistic Actions on Seed Germination", Journal of Natural Products, pubs.acs.org/stoken/presspac/p… ll/10.1021/np900630w

add to favorites email to friend print save as pdf

Related Stories

Can Nanotubes Help Your Garden Grow?

Oct 06, 2009

(PhysOrg.com) -- When we think of nanotubes, we often think of solar panels and physical science. However, it appears that nanotubes can also provide valuable help to plants as a fertilizer. Just add carbon ...

Recommended for you

Molecules that came in handy for first life on Earth

Nov 24, 2014

For the first time, chemists have successfully produced amino acid-like molecules that all have the same 'handedness', from simple building blocks and in a single test tube. Could this be how life started. ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.