Synthetic communities increase microbial diversity and productivity of Agave tequilana plants in the field

IF 3.3 3区 生物学 Q2 MICROBIOLOGY Phytobiomes Journal Pub Date : 2023-08-28 DOI:10.1094/pbiomes-01-23-0001-r
V. Flores-Núñez, D. A. Camarena‐Pozos, J. D. Chávez-González, Raúl Alcalde-Vázquez, M. N. Vázquez-Sánchez, A. G. Hernández-Melgar, J. Xool-Tamayo, Aldo Moreno-Ulloa, L. Partida-Martínez
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Abstract

Agaves are plants native to North America that sustain life in arid and semi-arid ecosystems. Previous studies revealed that cultivated plants of Agave tequilana had lower microbial diversity and functionality than wild Agave species. Here, we tested if synthetic communities (syncoms), based on microbial hubs or taxa with enriched microbial functions, could increase microbial diversity, plant health, and productivity in A. tequilana. We applied ten syncoms on the phyllosphere of six-months-old plants of Agave tequilana in the field and monitored their development for two years. Amplicon sequencing of the 16S-rRNA-V4 and ITS2 revealed that the inoculated syncoms played a negligible or minor role in the assembly of the prokaryotic and eukaryotic phyllospheric communities associated with Agave tequilana, respectively. However, syncoms based on microbial hubs, particularly those observed in the phyllosphere associated with the wild A. salmiana (PFCS), promoted microbial communities with higher alpha diversity. Some of these syncoms-derived phyllospheric communities consumed a greater variety of carbon sources; had more complex co-occurrence networks; and increased the content of sugars (oBrix, a measure of productivity in agaves) in the stem and changed the leaf metabolome. Our work demonstrates that the application of syncoms formulated based on predicted microbe-microbe interactions and metagenomic analyses of microbial communities in cultivated and wild plant species represents an effective tool to improve the sustainability and productivity of crops of arid ecosystems.
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合成群落增加了龙舌兰植物的微生物多样性和生产力
龙舌兰是原产于北美的植物,在干旱和半干旱的生态系统中维持生命。以往的研究表明,龙舌兰栽培植物的微生物多样性和功能低于野生龙舌兰。在这里,我们测试了基于微生物中心或具有丰富微生物功能的分类群的合成群落(syncoms)是否可以增加龙舌兰的微生物多样性,植物健康和生产力。在龙舌兰6个月生植株的层球上施用10种syncoms,对其生长发育进行了2年的监测。16S-rRNA-V4扩增子测序和ITS2扩增子测序结果显示,接种的克隆体在龙舌兰龙舌兰原核和真核层层群落的组装中分别发挥了可忽略或次要的作用。然而,基于微生物中心的syncoms,特别是在与野生salmiana (PFCS)相关的根层圈中观察到的syncoms,促进了具有更高α多样性的微生物群落。其中一些衍生的层层群落消耗了更多种类的碳源;有更复杂的共现网络;增加了龙舌兰茎中糖(一种衡量龙舌兰生产力的指标)的含量,改变了叶子的代谢组。我们的工作表明,应用基于预测微生物-微生物相互作用和栽培和野生植物物种微生物群落宏基因组分析制定的模式是提高干旱生态系统作物可持续性和生产力的有效工具。
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来源期刊
CiteScore
7.40
自引率
6.80%
发文量
42
审稿时长
4 weeks
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