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首页> 外文期刊>Philosophical Transactions of the Royal Society of London, Series B. Biological Sciences >Are fungal strains from salinized streams adapted to salt-rich conditions?
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Are fungal strains from salinized streams adapted to salt-rich conditions?

机译：来自盐渍溪流的真菌菌株适应富含盐的条件吗？

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摘要

Anthropogenic salinization of freshwater is a global problem with largely unknown consequences for stream functions. We compared the effects of salt addition (6 g l(-1) NaCl) in microcosms on leaf mass loss and microbial parameters in single- and multispecies assemblages of fungal strains (Heliscus lugdunensis, IIELU; Tetracladium marchalianum, TEMA; Flagellospora curta, FLCU) isolated from a reference (R) or salinized (S) stream. Fungal growth and interactions were also assessed. Salinization inhibited leaf decomposition and fungal biomass, but no differences were observed between species, strains or species combinations. Sporulation rates in monocultures were not affected by added salt, but differed among species (FLCU HELU TEMA), with S strains releasing more conidia. Fungal assemblages did not differ significantly in total conidia production (either between strains or medium salt concentration). HELU was the dominant species, which also had highest growth and most pronounced antagonistic behaviour. Fungal species, irrespective of origin, largely maintained their function in salinized streams. Strains from salt-contaminated streams did not trade-off conidial production for vegetative growth at high salt levels. The expected reduction of fungal diversity and potential changes in nutritional litter quality owing to salinization may impact leaf incorporation into secondary production in streams.
机译：淡水的人为盐渍化是一种全球性问题，对流功能的影响很大。我们比较了盐添加（6gl（-1）NaCl）在真菌菌株的单一和多层组合中叶片质量损失和微生物参数对微观菌株的影响（Heliscus Lugdunensis，IIELU; Tetracladium Marchanianum，Tema;斯塔尔斯图拉·柯拉，Flcu）与参考（R）或盐渍化物流分离。还评估了真菌生长和相互作用。盐渍化抑制叶片分解和真菌生物量，但物种，菌株或物种组合之间没有观察到差异。单苗养的孢子率不受添加的盐的影响，但在物种（Flcu＆ Helu＆ tema）之间不同，S菌株释放更多的分类。真菌组合在总分析性生产中没有显着差异（菌株或中盐浓度之间）。 Helu是主要的种类，也具有最高的增长和最明显的对抗行为。真菌物种，无论原点如何，在很大程度上都在盐渍化的流中保持了它们的功能。来自盐污染的流的菌株在高盐水平下的营养生长没有折扣生育生产。由于盐渍化的预期降低真菌多样性和营养垃圾质量的潜在变化可能会影响叶片掺入溪流中的二次生产中。

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