Knowledge

The NZAGRC is committed to providing information regarding agricultural greenhouse gases research and overview information.

Below are a list of publications and reports from a variety of sources that may be useful if you're interested in agricultural greenhouse gases. They range from information for those who have a general interest in greenhouse gas mitigation options and technologies through to very specific science papers on the various gases, technologies and mitigation solutions.

Use the left navigation for more specific subsets of publications and information.

Bacteria on leaves: a previously unrecognised source of N2O in grazed pastures

Bowatte, S., P. C. D. Newton, et al. (2015). "Bacteria on leaves: a previously unrecognised source of N2O in grazed pastures." ISME J 9(1): 265-267.

Abstract

Nitrous oxide (N2O) emissions from grazed pastures are a product of microbial transformations of nitrogen and the prevailing view is that these only occur in the soil. Here we show this is not the case. We have found ammonia-oxidising bacteria (AOB) are present on plant leaves where they produce N2O just as in soil. AOB (Nitrosospira sp. predominantly) on the pasture grass Lolium perenne converted 0.02-0.42% (mean 0.12%) of the oxidised ammonia to N2O. As we have found AOB to be ubiquitous on grasses sampled from urine patches, we propose a /`plant/' source of N2O may be a feature of grazed grassland.

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