New Insights into the Use of Rhizobia to Mitigate Soil N2O Emissions
New Insights into the Use of Rhizobia to Mitigate Soil N2O Emissions
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DOI：
10.3390/agriculture12020271
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发表时间：
2022-02-01
影响因子：
3.6
通讯作者：
Revellin, Cecile
中科院分区：
文献类型：
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作者：
Henault, Catherine;Barbier, Elodie;Revellin, Cecile
农业是温室气体N2O的一个主要人为来源，N2O也与平流层臭氧消耗有关。虽然使用根瘤菌接种剂已经被报道为减少土壤N2O排放的一种新兴选择，但本研究表明，使用与大豆相关的nosZ(+) G49菌株与nosZ(-) USDA138菌株，可以就地减少70%的土壤N2O排放。因此，我们认为在选择豆科作物的接种菌株时，除考虑其固氮能力外，还应考虑其减少氧化亚氮的能力。这项研究还清楚地表明，这种缓解方案不仅可以用于大豆，还可以用于不同的豆科作物，目前重点放在罗平上，因为它可能与nosZ(+) LL200菌株相关。三叶草共生菌株对N2O还原能力的明确展示表明，草地上也可能出现减缓的机会。
Agriculture is a major anthropogenic source of the greenhouse gas N2O, which is also involved in stratospheric ozone depletion. While the use of rhizobial inoculants has already been reported as an emerging option for mitigating soil N2O emissions, this study presents an in situ abatement of 70% of soil N2O emission using the strain nosZ(+) G49 vs. nosZ(-) USDA138 in association with soybean. Therefore, we consider that the choice of the inoculant strain of a leguminous crop should take into account the capacity of strains to reduce nitrous oxide in addition to their N fixation capacity. This study also clearly suggests that this mitigation option could be considered not only for soybean but also for different leguminous crops, with emphasis currently placed on lupin because of the potential of its association with the nosZ(+) LL200 strain. The clear demonstration of the N2O reduction capacity of clover symbiotic strains suggests that opportunities for mitigation might also occur on grassland.