Microbial release of potassium from K-bearing minerals by thermophilic fungus Aspergillus fumigatus

Lian, Bin; Wang, Bin; Pan, Mu; Liu, Cong‐Qiang; Teng, H. Henry

doi:10.1016/j.gca.2007.10.005

Cited by 185 publications

(88 citation statements)

References 48 publications

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“…Among the detected isolates, B. circulans Xue-113168 displayed the highest K-solubilizing activity, as high as 41.53% after 7days of culture with K-feldspar powder. This cycle is shorter compared to that determined by Lian et al (2008), who studied SSF and bioleached K-containing minerals for 15 days. One step of SSF adopted in this study has more advantages than the two steps solid-state fermentation combined with bioleaching done by Lian et al (2008).The mutant bacteria are a high efficient method for bioleaching.…”

Section: Statistical Analysesmentioning

confidence: 59%

“…(Sheng, 2005;Lian et al, 2008). B. circulans Xue-113168 has a high potassium dissolving rate (41%) and also produces chitinase (Xue, 2013).…”

Section: Statistical Analysesmentioning

confidence: 99%

“…After the fermentation time was extended to 7 days, the potassium dissolving rate increased to 41.53%. Lian et al (2008) spent 25 days on the fermentation: 15 days for SSF and 10 days for biological leaching. In this study, the SSF that simultaneously dissolved potassium required 7 days.…”

Section: Controlling the Ssf Processmentioning

confidence: 99%

“…Low water activity in SSF facilitates formation of spore on the solid substrate and the production of large quantities of enzymes, which is different from submerged fermentation (SMF) processes (Barrios-González, 2012). Microbial release of potassium from K-bearing minerals consists of fermentation and bioleach (Lian et al, 2008). This study combines two steps into one.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Optimizing Bacillus circulans Xue-113168 for biofertilizer production and its effects on crops

Xue¹,

Miao²,

Ma³

et al. 2016

Afr. J. Biotechnol.

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In this study, Bacillus circulans Xue-113168 biofertilizer was produced through solid state fermentation processes using food waste and feldspar. Results confirmed that solid state fermentation has considerable advantages compared to complex process (solid-state and bio-bleach). The control of pH, temperature, and humidity effectively led to the formation of 2×10 9 cfu/g spore and dissolution of potassium at a rate of 41.53%. Compound microbial fertilizer (CMF), formulated by humic acid and K 2 HPO 4 with biofertilizer, has a quick and durable effect. CMF increases the yield of rapeseeds by 75 to 89%, provides higher vitamin C and reduces nitrate in leaf. Yields of selenium-enriched jujube and jujube increased, respectively, in the CMF compared to the matrix control; rates of anthracnose and rust diseases also decreased. Furthermore, our results showed that CMF improved soil properties, such as organic matter, NPK content from 8.83 to 16.16 kg hm 2 , and reduced chemical fertilizer from 25 to 11%, respectively. For convenient medium, robust process and good effect, CMF is suitable for potassium deficiency and undeveloped arable land resources.

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Section: Statistical Analysesmentioning

confidence: 59%

“…(Sheng, 2005;Lian et al, 2008). B. circulans Xue-113168 has a high potassium dissolving rate (41%) and also produces chitinase (Xue, 2013).…”

Section: Statistical Analysesmentioning

confidence: 99%

Section: Controlling the Ssf Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimizing Bacillus circulans Xue-113168 for biofertilizer production and its effects on crops

Xue¹,

Miao²,

Ma³

et al. 2016

Afr. J. Biotechnol.

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“…in supernatant from inoculated culture is four times higher than that without inoculation [14]. Lian et al proposed that Aspergillus fumigatus can promote K release from K-bearing minerals by means of at least three routes: one through the complexation of soluble organic ligands, another appealing to the immobile biopolymers, and the third related to the mechanical forces in association with the direct physical contact between cells and mineral particles [20]. Although there have been many reports of fungal weathering of K-bearing minerals, the molecular mechanism thereof remains unclear.…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

A Global View of Gene Expression of Aspergillus nidulans on Responding to the Deficiency in Soluble Potassium

2015

Self Cite

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Many researchers have suggested that microbes can accelerate the weathering of silicate minerals. However, many genes and metabolic pathways related to microorganisms obtaining potassium (K) from silicate remain undiscovered. It is feasible to detect the gene expression within the scope of the whole genome through high-throughput sequencing. Surprisingly, only a few reports have shown fungal weathering of silicate using this technology. This study explored differences in gene expression of Aspergillus nidulans, which was cultured with different K sources, KCl, and K-feldspar. A. nidulans RNA was extracted by the construction of a cDNA library. Identification of K-acquisition-related genes with GO and KEGG pathway analysis revealed that primarily differentially expressed genes were related to the biosynthesis of amino acids. When these genes were grouped in accordance with the physiological functions, the genes involved in the synthesis of protease, ribosome, and mitochondria, trans-membrane transport, and oxidative phosphorylation were significantly different. Moreover, 20 genes selected were further tested using RT-qPCR. One half (10 genes) exhibited differential expression, which was consistent with the results of RNA-seq. Combining the results of RNA-seq and RT-qPCR, we summarised a possible way to obtain mineral K in A. nidulans as well. The differentially expressed genes and their associated metabolic pathways revealed will improve the understanding of the molecular mechanisms of microbial weathering of silicate minerals.

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Biological Weathering in the Terrestrial System

Zaharescu

Burghelea

Dontsova

et al. 2020

Biogeochemical Cycles

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Microbial release of potassium from K-bearing minerals by thermophilic fungus Aspergillus fumigatus

Cited by 185 publications

References 48 publications

Optimizing Bacillus circulans Xue-113168 for biofertilizer production and its effects on crops

Optimizing Bacillus circulans Xue-113168 for biofertilizer production and its effects on crops

A Global View of Gene Expression of Aspergillus nidulans on Responding to the Deficiency in Soluble Potassium

Biological Weathering in the Terrestrial System

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