ABSTRACT
The draft genome sequence of strain Bacillus thuringiensis SS2 consists of 426 contigs assembled at the scaffold level, totaling 5,030,306 bp, and contains 5,288 putative PATRIC protein-coding genes, including genes responsible for total benzoate consumption, degradation of halogenated compounds, heavy metal tolerance/resistance, biosynthesis of secondary metabolites, and microcin C7 self-immunity protein.
ABSTRACT
The 5,079,658-bp genome of Priestia aryabhattai strain BD1 isolated from a dye waste sediment consists of 5,185 protein-coding genes, of which 790 were hypothetical proteins, 63 were RNAs, and 54 were pseudogenes. Putative genes involved in oxygen/redox potential sensing, dye degradation, metal toxicity, antibiotic tolerance, and benzoate metabolism were found.
ABSTRACT
Mycobacteriophage McGee is a myovirus isolated from a wet soil sample collected at Manassas, VA, using Mycobacterium smegmatis mc2155. McGee has a genome 156,008 bp long, containing 237 protein-coding genes, 31 tRNA genes, and 1 transfer-messenger RNA (tmRNA) gene. McGee shares high gene content similarity to phages in actinobacteriophage cluster C1.
ABSTRACT
Kenmech, Peterson, and Rockne are bacteriophages that infect Mycobacterium smegmatis mc2 155. Both Kenmech and Peterson genomes are ~52 kbp long and contain 1 tRNA as well as 92 and 89 protein-coding genes, respectively. Rockne has a 56,704-bp genome with 108 protein-coding genes and no tRNA.
ABSTRACT
Serratia marcescens SSA1 was isolated from a dump site with a history of incineration. Its DNA of 5.05 Mbp has a GC content of 59.65%, with 77 tRNA genes and 3 rRNA genes. Its 4,909 putative PATRIC protein-coding genes include genes responsible for the degradation of dioxins and other xenobiotics and total consumption of benzoate.
ABSTRACT
A limited number of Bacillus amyloliquefaciens genome sequences have been generated and are available in the public domain from soil, fermented foods, and plants. Here, we report the whole-genome sequence of B. amyloliquefaciens AD20, isolated from a dye pond with azo dye decolorization capabilities.
ABSTRACT
This study was carried out to determine the effects of single infections and co-infections of three unrelated viruses on three cowpea cultivars (one commercial cowpea cultivar "White" and 2 IITA lines; IT81D-985 and TVu 76). The plants were inoculated with Cowpea aphid-borne mosaic virus (CABMV), genus Potyvirus, Cowpea mottle virus (CMeV), genus Carmovirus and Southern bean mosaic virus (SBMV), genus Sobemovirus singly and in mixture (double and triple) at 10, 20, and 30 days after planting (DAP). The treated plants were assessed for susceptibility to the viruses, growth, and yield. In all cases of infection, early inoculation resulted in higher disease severity compared with late infection. The virus treated cowpea plants were relatively shorter than buffer inoculated control plants except the IT81D-985 plants that were taller and produced more foliage. Single infections by CABMV, CMeV, and SBMV led to a complete loss of seeds in the three cowpea cultivars at 10 DAP; only cultivar White produced some seeds at 30 DAP. Double and triple virus infections led to a total loss of seeds in all three cowpea cultivars. None of the virus infected IITA lines produced any seeds except IT81D-985 plants co-infected with CABMV and SBMV at 30 DAP with a reduction of 80%. Overall, the commercial cultivar "White" was the least susceptible to the virus treatments and produced the most yield (flowers, pods, and seeds). CABMV was the most aggressive of these viruses and early single inoculations with this virus resulted in the premature death of some of the seedlings. The presence of the Potyvirus, CABMV in the double virus infections did not appear to increase disease severity or yield loss. There was no strong evidence for synergistic interactions between the viruses in the double virus mixtures.
ABSTRACT
Several lines of evidence suggest that the circadian clock is constructed of multiple molecular feedback oscillators that function to generate robust rhythms in organisms. However, while core oscillator mechanisms driving specific behaviors are well described in several model systems, the nature of other potential circadian oscillators is not understood. Using genetic approaches in the fungus Neurospora crassa, we uncovered an oscillator mechanism that drives rhythmic spore development in the absence of the well-characterized FRQ/WCC oscillator (FWO) and in constant light, conditions under which the FWO is not functional. While this novel oscillator does not require the FWO for activity, it does require the blue-light photoreceptor CRYPTOCHROME (CRY); thus, we call it the CRY-dependent oscillator (CDO). The CDO was uncovered in a strain carrying a mutation in cog-1 (cry-dependent oscillator gate-1), has a period of â¼1 day in constant light, and is temperature-compensated. In addition, cog-1 cells lacking the circadian blue-light photoreceptor WC-1 respond to blue light, suggesting that alternate light inputs function in cog-1 mutant cells. We show that the blue-light photoreceptors VIVID and CRY compensate for each other and for WC-1 in CRY-dependent oscillator light responses, but that WC-1 is necessary for circadian light entrainment.
Subject(s)
Circadian Rhythm , Cryptochromes/genetics , Neurospora crassa/genetics , Cryptochromes/metabolism , DNA-Binding Proteins/genetics , DNA-Binding Proteins/metabolism , Fungal Proteins/genetics , Fungal Proteins/metabolism , Neurospora crassa/physiology , Spores, Fungal/genetics , Transcription Factors/genetics , Transcription Factors/metabolismABSTRACT
Natural multiple viral infections of cultivated cowpeas have been reported in Nigeria. In this study, three Nigerian commercial cowpea cultivars ("Olo 11", "Oloyin" and "White") and two lines from the IITA (IT86D- 719 and TVU 76) were mechanically inoculated with Cowpea aphid-borne mosaic virus (CABMV), Bean southern mosaic virus (SBMV) and Cowpea mottle virus (CMeV) singly, as well as in all possible combinations at 10, 20 and 30 days after planting (DAP). Samples of leaves or stems were collected at 10, 20 and 30 days after inoculation (DAI) and analyzed for relative virus concentration by Enzyme-Linked Immunosrbent Assay. All the cultivars and lines {CVS/L} were susceptible to the viruses but the commercial CVS showed more severe symptoms and had relatively higher viral concentration. In single virus infections, CABMV which induced the most severe symptoms had absorbance values (at 405 nm) of 0.11 to 0.46 while SBMV and CMeV which induced moderate symptoms had virus titre of 0.74 to 1.99 and 0.11 to 0.90 respectively. Plants inoculated 10 DAP had significantly higher virus concentration than those inoculated 30 DAP. In mixed infections involving CABMV (10 DAP) apical necrosis and death were observed in commercial cultivars "Olo 11" and "White". Enhancement of CMeV titers were observed in plants infected with CMeV + CABMV. Multiple viral infections of cowpeas may result in complete yield loss, hence, the availability of seeds of cultivars with a high level of multiple virus resistance is recommended as a means of control.
