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"Aspergillus niger" Keyword-tagged Publications:

Title Authors PubMed ID
1 An examination of the quinic acid utilization genes in Aspergillus niger reveals the involvement of two pH-dependent permeases Sgro M; Reid ID; Arentshorst M; Ram AFJ; Tsang A; 40853219
GENOMICS
2 Transcriptomics identify the triggering of citrate export as the key event caused by manganese deficiency in Aspergillus niger Fekete E; Bíró V; Márton A; Bakondi-Kovács I; Sándor E; Kovács B; Geoffrion N; Tsang A; Kubicek CP; Karaffa L; 39377610
CSFG
3 Bioreactor as the root cause of the "manganese effect" during Aspergillus niger citric acid fermentations Fekete E; Bíró V; Márton A; Bakondi-Kovács I; Németh Z; Sándor E; Kovács B; Fábián I; Kubicek CP; Tsang A; Karaffa L; 35992333
CSFG
4 The chimeric GaaR-XlnR transcription factor induces pectinolytic activities in the presence of D-xylose in Aspergillus niger Kun RS; Garrigues S; Di Falco M; Tsang A; de Vries RP; 34236481
CSFG
5 Identification of a Novel Biosynthetic Gene Cluster in Aspergillus niger Using Comparative Genomics Evdokias G; Semper C; Mora-Ochomogo M; Di Falco M; Nguyen TTM; Savchenko A; Tsang A; Benoit-Gelber I; 34064722
BIOLOGY
6 Genetic Characterization of Mutations Related to Conidiophore Stalk Length Development in Aspergillus niger Laboratory Strain N402 Demirci E; Arentshorst M; Yilmaz B; Swinkels A; Reid ID; Visser J; Tsang A; Ram AFJ; 33959152
CSFG
7 Biosynthesis of Alkylcitric Acids in Aspergillus niger Involves Both Co-localized and Unlinked Genes. Palys S, Pham TTM, Tsang A 32695080
CSFG
8 The effects of external Mn2+ concentration on hyphal morphology and citric acid production are mediated primarily by the NRAMP-family transporter DmtA in Aspergillus niger. Fejes B, Ouedraogo JP, Fekete E, Sándor E, Flipphi M, Soós Á, Molnár ÁP, Kovács B, Kubicek CP, Tsang A, Karaffa L 32000778
CSFG
9 Four Aromatic Intradiol Ring Cleavage Dioxygenases from Aspergillus niger. Semana P, Powlowski J 31540981
CHEMISTRY
10 Expression-based clustering of CAZyme-encoding genes of Aspergillus niger. Gruben BS, Mäkelä MR, Kowalczyk JE, Zhou M, Benoit-Gelber I, De Vries RP 29169319
CSFG
11 W361R mutation in GaaR, the regulator of D-galacturonic acid-responsive genes, leads to constitutive production of pectinases in Aspergillus niger. Alazi E, Niu J, Otto SB, Arentshorst M, Pham TTM, Tsang A, Ram AFJ 30298571
CSFG
12 The presence of trace components significantly broadens the molecular response of Aspergillus niger to guar gum. Coconi Linares N, Di Falco M, Benoit-Gelber I, Gruben BS, Peng M, Tsang A, Mäkelä MR, de Vries RP 30797054
CSFG

 

Title:An examination of the quinic acid utilization genes in Aspergillus niger reveals the involvement of two pH-dependent permeases
Authors:Sgro MReid IDArentshorst MRam AFJTsang A
Link:https://pubmed.ncbi.nlm.nih.gov/40853219/
DOI:10.1093/g3journal/jkaf199
Publication:G3 (Bethesda, Md.)
Keywords:Aspergillus nigerfilamentous fungigene knockoutpermeasequinic acid catabolismtranscriptomicstransporter
PMID:40853219 Category: Date Added:2025-08-25
Dept Affiliation: GENOMICS
1 Dept of Biology, Concordia University, 7141 Sherbrooke St. W., Montreal, Quebec H4B 1R6.
2 Centre for Structural and Functional Genomics, Concordia University, 7141 Sherbrooke St. W., Montreal, Quebec H4B 1R6.
3 Institute of Biology Leiden, Microbial Sciences, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands.

Description:

Many microorganisms are able to use plant-derived aromatic and cyclic compounds like the common plant secondary metabolite quinic acid as carbon and energy sources. In fungi, three enzymatic steps convert quinic acid into the common intermediate protocatechuic acid, which is then further converted into TCA cycle intermediates. The genes encoding these three enzymes are known to be part of a gene cluster in Neurospora crassa along with a permease, a gene of unknown function, and an activator-repressor module controlling expression of the cluster. This gene cluster is conserved in fungi and has also been studied in Aspergillus nidulans, where an additional gene of unknown function is included. Here, we studied these genes in the filamentous fungus Aspergillus niger, where the availability of high-quality, well-annotated genomes and efficient tools for genome-editing and global gene expression analysis could provide new insights into quinic acid utilization in fungi. Using homology and whole transcriptome sequencing, we identified the genes involved in quinic acid utilization. Knockout mutants of these genes were then created to observe the growth phenotype on quinic acid media. We showed that not all the genes involved in quinic acid utilization in A. niger are linked. In addition to the in-cluster permease gene, we identified a second, previously unknown off-cluster permease gene which was upregulated in the presence of quinic acid. These two permeases were determined to function optimally at different pH levels, with the in-cluster permease being more effective at pH 6.5 and the off-cluster permease more effective at pH 3.5.





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