Technical note: Manipulating interactions between plant stress responses and soil methane oxidation rates

Xiaoqi Zhou, Cheng Yuan Xu, Shahla H. Bai, Zhihong Xu, Simeon J. Smaill, Peter W. Clinton, Chengrong Chen

Research output: Contribution to journalArticlepeer-review

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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 languageEnglish
Pages (from-to)4125-4129
Number of pages5
JournalBiogeosciences
Volume15
Issue number13
DOIs
Publication statusPublished - 6 Jul 2018
Externally publishedYes

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