AIMS The objective of this study was to determine if acetosyringone affected the expression of aflatoxin biosynthetic genes. METHODS AND RESULTS Two genes, nor1 and ver1, representing genes whose products are involved in early and late steps in aflatoxin biosynthesis, were examined. Two GUS (beta-glucuronidase) reporter constructs, nor1:GUS (pGAP12) and ver1:GUS (pGAP13), were used to study t...

Vermicompost is an organic fertilizer with high microbiological activity. However, the application of vermicompost in fragrant rice production and effects rates on performances have not been reported. The present study conducted a field experiment two cropping lugs to investigate agronomic cultivars under different rates. Five rates, i.e., 2.250 (Ver1), 3.000 (Ver2), 3.750 (Ver3), 4.8750 (Ver4)...

We give a topological interpretation of the free metabelian group, following the plan described in [Ver1],[Ver2]. This interpretation is based on considering the Cayley graph of a finitely generated group as a one-dimensional complex, its homology group with induced action of the group, and the corresponding extension of the homology group determined by the canonical cocycle. We also define sat...

Western Australian Centre for Geodesy & The Institute for Geoscience Research, Curtin University of Technology, GPO Box U1987, Perth WA 6845, Australia, * Tel: (08) 9266 2218; Fax: (08) 9266 2703; Email: [email protected] 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 This study investigates the quality (in terms of elevation accuracy and systematic errors) of three recent publicly...

The satellite-derived sea ice concentration (SIC) and thickness (SIT) observation over the Arctic region are assimilated by implementing Ensemble Optimal Interpolation (EnOI) into Community Ice CodE version 5.1.2 (CICE5) model. observations derived from Special Sensor Microwave Imager/Sounder (SSMIS) for SIC, European Space Agency's (ESA) Soil Moisture Ocean Salinity mission (SMOS) SIT of thin ...

In order to determine the fumonisin producingisolates of the Fusarium fujikuroi species complex (FFSC), associated with infected spikes, and ear rot of grass plants, we examined 78 samples collected from Kermanshah province, Iran. Based on morphological characters, twenty two isolates assigned to the FFSC and were identified as F. proliferatum (ten isolates), F. verticillioides (seven isolates)...

Aflatoxins are secondary toxic metabolites produced by some Aspergillus spp. particularly, Aspergillus flavus and A. parasiticus that contaminate food and feed. The objective of this study was to evaluate the contamination of feedstuffs with Aspergillus spp. and detect genes involved in the aflatoxin biosynthesis pathway of A. flavus and A. parasiticus isolates. A total of 110 cow feed samples ...

Two morphologically different Aspergillus parasiticus strains, one producing aflatoxins, abundant conidia but few sclerotia (BN9) and the other producing O-methyl-sterimatocystin (OMST), copious sclerotia but a low number of conidia (RH), were used to assess the role of crzA which encodes a putative calcium-signaling pathway regulatory protein. Under standard culture conditions, BN9DeltacrzA mu...

Aspergillus Xavus populations are genetically diverse. Isolates that produce either, neither, or both aXatoxins and cyclopiazonic acid (CPA) are present in the Weld. We investigated defects in the aXatoxin gene cluster in 38 nonaXatoxigenic A. Xavus isolates collected from southern United States. PCR assays using aXatoxin-gene-speciWc primers grouped these isolates into eight (A–H) deletion pat...