<br>与煤炭相关的商业腐殖质中的微生物对水培作物栽培的影响：腐殖质农艺用途的微生物学观点,Journal of Agricultural and Food Chemistry

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与煤炭相关的商业腐殖质中的微生物对水培作物栽培的影响：腐殖质农艺用途的微生物学观点
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2020-11-29 , DOI: 10.1021/acs.jafc.0c05474
Hae Jin Jeong ₁ , Min Seung Oh ₁ , Jalil Ur Rehman _{2,

3} , Ho Young Yoon _{2,

3} , Jae-Hwan Kim ₄ , Juhee Shin ₅ , Seung Gu Shin ₅ , Hyomin Bae ₁ , Jong-Rok Jeon _{1,

2,

3}

Affiliation

在这里，对与煤炭相关的腐殖质（HS）进行了检查，以确认灭菌处理是否会导致它们在水培栽培中刺激生菜的能力较差。有趣的是，当处理高压灭菌的 HS 时，观察到生菜生物量和作物培养液的微生物菌落形成单位都急剧减少。通过将裸 H2S 粉末直接接种到常规微生物营养物上，可以在裸 H2S 处理的水培系统中识别出一些微生物属（即芽孢杆菌和曲霉属），这支持了水培栽培中繁盛的微生物源自裸 H2S 处理的微生物。。此外，一些从HS中分离出来的细菌和真菌菌株（即芽孢杆菌属和曲霉属）与生菜的共培养导致植物生物量显着增加，并增强了对氯化钠相关非生物胁迫的抵抗力。通过固相微萃取结合气相色谱-质谱法检测以植物刺激闻名的微生物挥发性有机化合物。最终证实，分离物能够利用碳底物，例如果胶和吐温 20 或 40，这些碳底物与从泥炭和风化褐煤（即 H2S 提取源）中分离的微生物相关。总的来说，我们的结果表明，当商业煤炭相关的HS应用于水培作物种植时，可以考虑微生物因素。

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Effects of Microbes from Coal-Related Commercial Humic Substances on Hydroponic Crop Cultivation: A Microbiological View for Agronomical Use of Humic Substances

Here, coal-related humic substances (HSs) were examined to confirm whether sterilization treatments induce their inferior ability to stimulate lettuce in hydroponic cultivations. Interestingly, a drastic reduction in both lettuce biomass and microbial colony-forming units of the crop culture solutions was observed when the autoclaved HSs were treated. Some microbial genera (i.e., Bacillus and Aspergillus) identifiable in the bare HS-treated hydroponic systems were able to be isolated by direct inoculation of bare HS powders on conventional microbial nutrients, supporting that flourishing microbes in the hydroponic cultivations derive from bare HSs-treated. Moreover, coincubation of some isolated bacterial and fungal strains (i.e., Bacillus and Aspergillus genera) from HSs with lettuce resulted in a significant increase in plant biomass and enhanced resistance to NaCl-related abiotic stresses. Microbial volatile organic compounds renowned for plant stimulation were detected by using solid-phase microextraction coupled with gas chromatography–mass spectrometry. It was finally confirmed that the isolates are capable of utilizing carbon substrates such as pectin and tween 20 or 40, which are relevant to those of microbes isolated from peat and leonardite (i.e., HS extraction sources). Overall, our results suggest that microbiological factors could be considered when commercial coal-related HSs are applied in hydroponic crop cultivations.

更新日期：2021-01-20

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