商业微生物接种剂对改善本地植物物种的生长和生理表现效果有限。

IF 2.6 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION
Conservation Physiology Pub Date : 2024-06-18 eCollection Date: 2024-01-01 DOI:10.1093/conphys/coae037
Wei San Wong, Jaume Ruscalleda-Alvarez, Jean W H Yong, Jason C Stevens, Justin M Valliere, Erik J Veneklaas
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引用次数: 0

摘要

土壤微生物接种剂作为改善土壤条件以促进生态恢复的手段,正日益受到人们的重视。在西澳大利亚州西南部,具有高度生物多样性的银杏林植物群落正日益受到气候变化、土地开发和采矿等各种因素的威胁。要保护这一植物群落,就必须恢复银杏林地。在银杏林地恢复中使用微生物接种的方法尚未得到研究。在此,我们在盆栽实验中评估了一种商业微生物接种剂(GOGO Juice,Neutrog Australia Pty Ltd)对改善 10 种生态多样化的银杏林地植物物种表现的功效。植物在两种浇水方式(充足浇水和干旱浇水)中选择一种,同时进行微生物接种处理(未接种和接种)。植物在这两种浇水处理下生长了 10 周,然后所有处理的植物都经历了持续 8 周的干旱期。通过植物生物量和分配、气体交换参数、叶片碳和氮以及稳定同位素(δ15N 和 δ13C)组成来评估植物的表现。对植物木质部汁液植物激素进行了分析,以研究微生物接种对植物植物激素谱的影响以及与其他观察到的生理参数之间的潜在关系。在所有调查的植物物种中,接种处理对植物生长的影响较小。对每个物种的进一步分析表明,在水分充足或干旱胁迫条件下,接种处理都不会导致显著的生物量增加,对氮营养和光合作用的影响也各不相同且微乎其微。这表明所选的商业微生物接种剂对测试植物物种的益处有限。需要在受控条件下对微生物(存在于接种剂中)和植物之间的兼容性、接种时间、微生物的存活率和达到效果所需的浓度进行进一步调查,并进行田间试验,以检验其在实际恢复环境中的可行性和有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Limited efficacy of a commercial microbial inoculant for improving growth and physiological performance of native plant species.

Soil microbial inoculants are increasingly being explored as means to improve soil conditions to facilitate ecological restoration. In southwestern Western Australia, highly biodiverse Banksia woodland plant communities are increasingly threatened by various factors including climate change, land development and mining. Banksia woodland restoration is necessary to conserve this plant community. The use of microbial inoculation in Banksia woodland restoration has not yet been investigated. Here, we evaluated the efficacy of a commercial microbial inoculant (GOGO Juice, Neutrog Australia Pty Ltd) for improving the performance of 10 ecologically diverse Banksia woodland plant species in a pot experiment. Plants were subjected to one of two watering regimes (well-watered and drought) in combination with microbial inoculation treatments (non-inoculated and inoculated). Plants were maintained under these two watering treatments for 10 weeks, at which point plants in all treatments were subjected to a final drought period lasting 8 weeks. Plant performance was evaluated by plant biomass and allocation, gas exchange parameters, foliar carbon and nitrogen and stable isotope (δ15N and δ13C) compositions. Plant xylem sap phytohormones were analysed to investigate the effect of microbial inoculation on plant phytohormone profiles and potential relationships with other observed physiological parameters. Across all investigated plant species, inoculation treatments had small effects on plant growth. Further analysis within each species revealed that inoculation treatments did not result in significant biomass gain under well-watered or drought-stressed conditions, and effects on nitrogen nutrition and photosynthesis were variable and minimal. This suggests that the selected commercial microbial inoculant had limited benefits for the tested plant species. Further investigations on the compatibility between the microorganisms (present in the inoculant) and plants, timing of inoculation, viability of the microorganisms and concentration(s) required to achieve effectiveness, under controlled conditions, and field trials are required to test the feasibility and efficacy in actual restoration environments.

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来源期刊
Conservation Physiology
Conservation Physiology Environmental Science-Management, Monitoring, Policy and Law
CiteScore
5.10
自引率
3.70%
发文量
71
审稿时长
11 weeks
期刊介绍: Conservation Physiology is an online only, fully open access journal published on behalf of the Society for Experimental Biology. Biodiversity across the globe faces a growing number of threats associated with human activities. Conservation Physiology will publish research on all taxa (microbes, plants and animals) focused on understanding and predicting how organisms, populations, ecosystems and natural resources respond to environmental change and stressors. Physiology is considered in the broadest possible terms to include functional and mechanistic responses at all scales. We also welcome research towards developing and refining strategies to rebuild populations, restore ecosystems, inform conservation policy, and manage living resources. We define conservation physiology broadly and encourage potential authors to contact the editorial team if they have any questions regarding the remit of the journal.
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