Keyword search (4,163 papers available)

"Aspergillus" 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 Functional analysis of the protocatechuate branch of the β-ketoadipate pathway in Aspergillus niger Sgro M; Chow N; Olyaei F; Arentshorst M; Geoffrion N; Ram AFJ; Powlowski J; Tsang A; 37399977
BIOLOGY
4 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
5 Lignocellulolytic enzymes from Aspergillus allahabadii for efficient bioconversion of rice straw into fermentable sugars and biogas Sharma G; Kaur B; Raheja Y; Agrawal D; Basotra N; Di Falco M; Tsang A; Singh Chadha B; 35753566
CSFG
6 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
7 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
8 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
9 Biosynthesis of Alkylcitric Acids in Aspergillus niger Involves Both Co-localized and Unlinked Genes. Palys S, Pham TTM, Tsang A 32695080
CSFG
10 Functional Characterization of Clinical Isolates of the Opportunistic Fungal Pathogen Aspergillus nidulans. Bastos RW, Valero C, Silva LP, Schoen T, Drott M, Brauer V, Silva-Rocha R, Lind A, Steenwyk JL, Rokas A, Rodrigues F, Resendiz-Sharpe A, Lagrou K, Marcet-Houben M, Gabaldón T, McDonnell E, Reid I, Tsang A, Oakley BR, Loures FV, Almeida F, Huttenlocher A, Keller NP, Ries LNA, Goldman GH 32269156
CSFG
11 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
12 Evolutionary adaptation of Aspergillus niger for increased ferulic acid tolerance. Lubbers RJM, Liwanag AJ, Peng M, Dilokpimol A, Benoit-Gelber I, de Vries RP 31674709
CSFG
13 Four Aromatic Intradiol Ring Cleavage Dioxygenases from Aspergillus niger. Semana P, Powlowski J 31540981
CHEMISTRY
14 Closely related fungi employ diverse enzymatic strategies to degrade plant biomass. Benoit I, Culleton H, Zhou M, DiFalco M, Aguilar-Osorio G, Battaglia E, Bouzid O, Brouwer CPJM, El-Bushari HBO, Coutinho PM, Gruben BS, Hildén KS, Houbraken J, Barboza LAJ, Levasseur A, Majoor E, Mäkelä MR, Narang HM, Trejo-Aguilar B, van den Brink J, vanKuyk PA, Wiebenga A, McKie V, McCleary B, Tsang A, Henrissat B, de Vries RP 26236396
CSFG
15 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
16 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
17 The gold-standard genome of Aspergillus niger NRRL 3 enables a detailed view of the diversity of sugar catabolism in fungi. Aguilar-Pontes MV, Brandl J, McDonnell E, Strasser K, Nguyen TTM, Riley R, Mondo S, Salamov A, Nybo JL, Vesth TC, Grigoriev IV, Andersen MR, Tsang A, de Vries RP 30425417
CSFG
18 Genomic and exoproteomic diversity in plant biomass degradation approaches among Aspergilli Mäkelä MR; DiFalco M; McDonnell E; Nguyen TTM; Wiebenga A; Hildén K; Peng M; Grigoriev IV; Tsang A; de Vries RP; 30487660
CSFG
19 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:W361R mutation in GaaR, the regulator of D-galacturonic acid-responsive genes, leads to constitutive production of pectinases in Aspergillus niger.
Authors:Alazi ENiu JOtto SBArentshorst MPham TTMTsang ARam AFJ
Link:https://www.ncbi.nlm.nih.gov/pubmed/30298571?dopt=Abstract
DOI:10.1002/mbo3.732
Publication:MicrobiologyOpen
Keywords:Aspergillus nigerCRISPR-Cas9constitutively active transcription factormissense mutationpectinasetranscription factor localization
PMID:30298571 Category:Microbiologyopen Date Added:2019-06-07
Dept Affiliation: CSFG
1 Molecular Microbiology and Biotechnology, Institute of Biology Leiden, Leiden University, Leiden, The Netherlands.
2 Centre for Structural and Functional Genomics, Concordia University, Montreal, Québec, Canada.

Description:

W361R mutation in GaaR, the regulator of D-galacturonic acid-responsive genes, leads to constitutive production of pectinases in Aspergillus niger.

Microbiologyopen. 2019 May;8(5):e00732

Authors: Alazi E, Niu J, Otto SB, Arentshorst M, Pham TTM, Tsang A, Ram AFJ

Abstract

Polysaccharides present in plant biomass, such as pectin, are the main carbon source for filamentous fungi. Aspergillus niger naturally secretes pectinases to degrade pectin and utilize the released monomers, mainly D-galacturonic acid. The transcriptional activator GaaR, the repressor of D-galacturonic acid utilization GaaX, and the physiological inducer 2-keto-3-deoxy-L-galactonate play important roles in the transcriptional regulation of D-galacturonic acid-responsive genes, which include the genes encoding pectinases. In this study, we described the mutations found in gaaX and gaaR that enabled constitutive (i.e., inducer-independent) expression of pectinases by A. niger. Using promoter-reporter strains (PpgaX-amdS) and polygalacturonic acid plate assays, we showed that W361R mutation in GaaR results in constitutive production of pectinases. Analysis of subcellular localization of C-terminally eGFP-tagged GaaR/GaaRW 361R revealed important differences in nuclear accumulation of N- versus C-terminally eGFP-tagged GaaR.

PMID: 30298571 [PubMed - in process]





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