Abstract
It has recently been hypothesised that ethylene, released into soil by stressed plants, reduces the oxidation of methane by methanotroph. To test this, a field trial was established in which maize plants were grown with and without soil moisture stress, and the effects of addition aminoethoxyvinylglycine (AVG; an ethylene biosynthesis inhibitor) and biochar (increases soil water holding capacity and reduces plant stress) were determined following the static incubation of soil samples. AVG increased methane oxidation rates by 50 % (p = 0.039), but only in the absence of irrigation. No other treatment effects were observed. This result provides evidence for a positive feedback system between plant stress, ethylene production, and impacts on methanotrophic activity.
| Original language | English |
|---|---|
| Pages (from-to) | 4125-4129 |
| Number of pages | 5 |
| Journal | Biogeosciences |
| Volume | 15 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - 6 Jul 2018 |
| Externally published | Yes |
Bibliographical note
Funding Information:Acknowledgements. The research was jointly supported by National Natural Science Foundation of China (no. 31600406), Shanghai Science and Technology Innovation Fund (no. 18391902300), Griffith University Research Fellowship, a Collaborative Research Network of the University of the Sunshine Coast Research Futures Project Seed Grant, New Zealand, and the “Growing Confidence in Forestry’s Future” research programme (C04X1306), which is jointly funded by the Ministry of Business Information and Employment (MBIE) and the Forest Growers Levy Trust, with the support of the NZ Forest Owners Association (FOA) and the NZ Farm Forestry Association (FFA).
Publisher Copyright:
© 2018 Author(s).