The microbiome of a perennial cereal differs from annual winter wheat only in the root endosphere.

IF 5.1 Q1 ECOLOGY
ISME communications Pub Date : 2024-12-23 eCollection Date: 2025-01-01 DOI:10.1093/ismeco/ycae165
Kristina Michl, Makoto Kanasugi, Alena Förster, Regina Wuggenig, Sulemana Issifu, Katarzyna Hrynkiewicz, Christoph Emmerling, Christophe David, Benjamin Dumont, Linda-Maria Dimitrova Mårtensson, Frank Rasche, Gabriele Berg, Tomislav Cernava
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Abstract

The intensification of agriculture has led to environmental degradation, including the loss of biodiversity. This has prompted interest in perennial grain cropping systems to address and mitigate some of these negative impacts. In order to determine if perennial grain cultivation promotes a higher microbial diversity, we assessed the endophytic microbiota of a perennial grain crop (intermediate wheatgrass, Thinopyrum intermedium L.) in comparison to its annual counterpart, wheat (Triticum aestivum L.). The study covered three sampling sites in a pan-European gradient (Sweden, Belgium, and France), two plant genotypes, three plant compartments (roots, stems, and leaves), and two sampling time points. We observed that the host genotype effect was mainly evident in the belowground compartment, and only to a lesser extent in the aboveground tissues, with a similar pattern at all three sampling sites. Moreover, intermediate wheatgrass roots harbored a different bacterial community composition and higher diversity and richness compared to their annual counterparts. The root bacterial diversity was influenced by not only several soil chemical parameters, such as the carbon:nitrogen ratio, but also soil microbial parameters, such as soil respiration and dehydrogenase activity. Consistent findings across time and space suggest stable mechanisms in microbiota assembly associated with perennial grain cropping, underscoring their potential role in supporting biodiversity within sustainable agricultural systems.

多年生谷物与一年生冬小麦的微生物组只在根内球层不同。
农业的集约化导致了环境退化,包括生物多样性的丧失。这引起了人们对多年生粮食种植系统的兴趣,以解决和减轻这些负面影响。为了确定多年生粮食种植是否促进了更高的微生物多样性,我们评估了多年生粮食作物(中间小麦草,Thinopyrum intermedium L.)与一年生小麦(Triticum aestivum L.)的内生微生物群。该研究覆盖了泛欧梯度的三个采样点(瑞典、比利时和法国)、两种植物基因型、三个植物区室(根、茎和叶)和两个采样时间点。我们观察到,寄主基因型效应主要在地下隔室中明显,而在地上组织中作用较小,在所有三个采样点都具有相似的模式。此外,与一年生小麦根相比,中间小麦根具有不同的细菌群落组成和更高的多样性和丰富度。根系细菌多样性不仅受碳氮比等土壤化学参数的影响,还受土壤呼吸和脱氢酶活性等土壤微生物参数的影响。跨时间和空间的一致发现表明,与多年生粮食种植相关的微生物群聚集机制稳定,强调了它们在可持续农业系统中支持生物多样性的潜在作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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