Soil Priming – Let’s Get This Party Started.

glucose-vanillic

The priming effect, i.e. the increase in soil organic matter (SOM) decomposition rate after fresh organic matter input to soil, is often supposed to result from a global increase in microbial activity and competition due to the higher availability of energy released from the decomposition of fresh organic matter.

However a new study suggests that:

The chemical structure of added compounds on the priming effect is much larger than the effect of energy-content.

and

Different substrates resulted in different priming effect but appeared to stimulate the growth of similar bacterial groups. This suggests that the added compounds stimulate different enzyme systems within similar bacterial taxa.

Priming of soil organic matter: Chemical structure of added compounds is more important than the energy content

Advertisements

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