Temporal Dynamics of Rare and Abundant Soil Bacterial Taxa from Different Fertilization Regimes Under Various Environmental Disturbances.
Temporal Dynamics of Rare and Abundant Soil Bacterial Taxa from Different Fertilization Regimes Under Various Environmental Disturbances.
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不同环境干扰下不同施肥制度下稀有和丰富土壤细菌类群的时间动态
DOI：
10.1128/msystems.00559-22
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发表时间：
2022-10-26
期刊：
影响因子：
6.4
通讯作者：
中科院分区：
文献类型：
--
作者：
全球气候变化已成为一个严重的环境问题。不同类型的极端气候驱使土壤微生物群落进入不同的状态，导致土壤微生物生态系统及相关功能产生一系列后果。迫切需要一种有效的方法来缓冲微生物群落以应对环境干扰。在这里，我们进行了一系列中生态实验，其中有机（NOF）和化肥（NCF）长期改良的土壤微生物群受到包括干旱、洪水、冻融循环和高温在内的环境干扰。随后，我们追踪了 NOF 和 NCF 处理土壤中稀有和丰富细菌类群的时间动态，以评估有机改良剂在土壤微生物组恢复中的效率。我们的结果显示，冻融循环和干旱处理对细菌群落的影响比洪水和高温更弱。稀有类群和丰富类群之间的转换发生在扰动后连续的洪水和热处理中，表明新的平衡与 NCF 和 NOF 处理土壤中的稀有类群密切相关。微生物组恢复过程建模的贝叶斯拟合表明，NOF 土壤中丰富类群的稳定性高于 NCF 土壤中的稳定性。特别是，NOF 处理土壤在发生微弱扰动后减少了与初始细菌群落的分歧。我们共同证明，长期有机输入是通过增强丰富细菌物种的稳定性来提高向替代状态过渡的阈值的有效策略。这些发现为农业生态系统应对气候变化的可持续发展提供了基础。重要性预计不同的极端气候将对作物生产构成主要威胁，而土壤微生物组在农业生态系统中发挥着至关重要的作用。近年来，我们知道有机改良剂是优化土壤微生物群落组成和功能、维护土壤生态系统健康的有效方法。然而，有机肥对缓冲细菌群落免受环境干扰的影响及其潜在机制仍不清楚。我们进行了一系列中生态实验，结果表明有机肥料在促进土壤微生物组抵御气候变化影响方面具有额外的能力。我们的研究为农业生态系统应对气候变化的可持续发展提供了机制见解和直接指导。
Global climate change has emerged as a critical environmental problem. Different types of climate extremes drive soil microbial communities to alternative states, leading to a series of consequences for soil microbial ecosystems and related functions. An effective method is urgently needed for buffering microbial communities to tackle environmental disturbances. Here, we conducted a series of mesocosm experiments in which the organic (NOF) and chemical fertilizer (NCF) long-term-amended soil microbiotas were subjected to environmental disturbances that included drought, flooding, freeze-thaw cycles, and heat. We subsequently tracked the temporal dynamics of rare and abundant bacterial taxa in NOF and NCF treatment soils to assess the efficiencies of organic amendments in recovery of soil microbiome. Our results revealed that freeze-thaw cycles and drought treatments showed weaker effects on bacterial communities than flooding and heat. The turnover between rare and abundant taxa occurred in postdisturbance succession of flooding and heat treatments, indicating that new equilibria were tightly related to the rare taxa in both NCF and NOF treatment soils. The Bayesian fits of modeling for the microbiome recovery process revealed that the stability of abundant taxa in NOF was higher than that in NCF soil. In particular, the NOF treatment soil reduced the divergence from the initial bacterial community after weak perturbations occurred. Together, we demonstrated that long-term organic input is an effective strategy to enhance the thresholds for transition to alternative states via enhancing the stability of abundant bacterial species. These findings provide a basis for the sustainable development of agricultural ecosystems in response to changing climates. IMPORTANCE Different climate extremes are expected to be a major threat to crop production, and the soil microbiome has been known to play a crucial role in agricultural ecosystems. In recent years, we have known that organic amendments are an effective method for optimizing the composition and functioning of the soil microbial community and maintaining the health of the soil ecosystem. However, the effects of organic fertilization on buffering bacterial communities against environmental disturbances and the underlying mechanisms are still unclear. We conducted a series of mesocosm experiments and showed that organic fertilizers had additional capacities in promoting the soil microbiome to withstand climate change effects. Our study provides both mechanistic insights as well as a direct guide for the sustainable development of agricultural ecosystems in response to climate change.
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DOI：
10.1038/ismej.2014.210
发表时间：
2015-05
期刊：
The ISME journal
影响因子：
--
作者：
通讯作者：
--
影响因子：
4.8
作者：
Fierer, Noah;Bradford, Mark A.;Jackson, Robert B.
通讯作者：
Jackson, Robert B.
影响因子：
11.6
作者：
Dai, Zhongmin;Su, Weiqin;Xu, Jianming
通讯作者：
Xu, Jianming
DOI：
10.1073/pnas.1000080107
发表时间：
2011-03-15
影响因子：
11.1
作者：
Caporaso, J. Gregory;Lauber, Christian L.;Knight, Rob
通讯作者：
Knight, Rob
影响因子：
5.2
作者：
Dai T;Fuchs BB;Coleman JJ;Prates RA;Astrakas C;St Denis TG;Ribeiro MS;Mylonakis E;Hamblin MR;Tegos GP
通讯作者：
Tegos GP