以灌溉为基础的保守农业增加了阿根廷干旱区王国间共生网络的联系

IF 2.6 3区 农林科学 Q1 AGRONOMY
Juan Pablo Frene, Valeria Faggioli, Julieta Covelli, Dalila Reyna, Patricio Sobrero, Luciano Gabbarini, Alejandro Ferrari, Luis Gabriel Wall
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引用次数: 0

摘要

水是农业系统中最重要的自然资源之一,灌溉系统的采用正在扩大巴塔哥尼亚北部干旱地区(阿根廷)的生产性农业边界。评估农业管理如何影响土壤过程(如土壤微生物群落、养分转化和生态系统功能)至关重要。因此,我们分析了从半干旱草原到免耕和轮作的灌溉农业系统对土壤微生物组(细菌和真菌)的影响,重点研究了土壤核心微生物组和土壤成员之间的联系。方法利用细菌16S rRNA的v3 ~ v4区和真菌ITS rRNA的its1 ~ 5f区土壤DNA扩增子序列分析土壤微生物区系。分析了土壤酶、聚集和化学性质与微生物群结构的关系。结果灌溉农业增加了网络成员之间的联系,但没有增加网络成员的数量。此外,我们能够识别土壤核心微生物组,它在共发生网络中发挥了重要作用。在巴塔哥尼亚北部干旱区复杂的微生物土壤生态系统中,核心微生物组在保持土壤细菌-真菌相互作用及其对王国间关系的影响中发挥了关键作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Conservative Agriculture Based on Irrigation Increased the Connections in Inter-Kingdom Co-Occurrence Networks in Arid Zones of Argentina

Conservative Agriculture Based on Irrigation Increased the Connections in Inter-Kingdom Co-Occurrence Networks in Arid Zones of Argentina

Background

Water is one of the most important natural resources in agricultural systems, and the adoption of irrigation systems is producing the expansion of the productive agriculture frontier in Northern Patagonia's arid zone (Argentina). It is critical to evaluate how agricultural management shapes this soil process, like soil microbial communities, nutrient transformation, and ecosystem functions.

Aims

For this reason, we analyzed how converting from a semi-arid steppe to an irrigated agricultural system based on no-till and crop rotations impacted the soil microbiome (bacteria and fungi), focusing on the soil core microbiome and the connections between the soil members.

Methods

Soil microbiota was analyzed by soil DNA amplicon sequences V3-V4 region of 16S rRNA for bacteria and ITS1–5F region of the ITS rRNA for fungi. Soil enzymes, aggregation, and chemical properties were analyzed related to microbiota structure.

Results

Our results suggest that irrigated agriculture enhanced the connections between members but not the number of network members per se. Additionally, we were able to identify a soil core microbiome, which played an important role in the co-occurrence networks.

Conclusions

We concluded by demonstrating the critical role that the core microbiome plays in preserving soil bacterial–fungal interactions and their influence on inter-kingdom relationships in complex microbial soil ecosystems in the arid zones of northern Patagonia.

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来源期刊
CiteScore
4.70
自引率
8.00%
发文量
90
审稿时长
8-16 weeks
期刊介绍: Established in 1922, the Journal of Plant Nutrition and Soil Science (JPNSS) is an international peer-reviewed journal devoted to cover the entire spectrum of plant nutrition and soil science from different scale units, e.g. agroecosystem to natural systems. With its wide scope and focus on soil-plant interactions, JPNSS is one of the leading journals on this topic. Articles in JPNSS include reviews, high-standard original papers, and short communications and represent challenging research of international significance. The Journal of Plant Nutrition and Soil Science is one of the world’s oldest journals. You can trust in a peer-reviewed journal that has been established in the plant and soil science community for almost 100 years. Journal of Plant Nutrition and Soil Science (ISSN 1436-8730) is published in six volumes per year, by the German Societies of Plant Nutrition (DGP) and Soil Science (DBG). Furthermore, the Journal of Plant Nutrition and Soil Science (JPNSS) is a Cooperating Journal of the International Union of Soil Science (IUSS). The journal is produced by Wiley-VCH. Topical Divisions of the Journal of Plant Nutrition and Soil Science that are receiving increasing attention are: JPNSS – Topical Divisions Special timely focus in interdisciplinarity: - sustainability & critical zone science. Soil-Plant Interactions: - rhizosphere science & soil ecology - pollutant cycling & plant-soil protection - land use & climate change. Soil Science: - soil chemistry & soil physics - soil biology & biogeochemistry - soil genesis & mineralogy. Plant Nutrition: - plant nutritional physiology - nutrient dynamics & soil fertility - ecophysiological aspects of plant nutrition.
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