Article | 05-December-2017
distribution of Pasteuria penetrans and its relationship with the nematode host in the soil was investigated to identify (i) the vertical distribution of P. penetrans endospores in an irrigated P. tobira field and (ii) the relationship among P. penetrans endospore density, M. incognita J2 population density, and host plant root distribution over time. Soil bioassays revealed that endospore density was greater in the upper 18 cm of the top soil compared with the underlying depths. A correlation analysis
RICHARD BAIDOO,
TESFAMARIAM MEKETE MENGISTU,
JANETE A. BRITO,
ROBERT MCSORLEY,
ROBERT H. STAMPS,
WILLIAM T. CROW
Journal of Nematology, Volume 49 , ISSUE 3, 311–315
Research Article | 03-September-2018
Pasteuria penetrans is a Gram-positive, endospore forming soil bacterium, infecting root-knot nematodes, Meloidogyne spp. Being obligate in nature, the bacterium is not easily grown in vitro, and the in vivo culturing technique is relied on the soil-based microcosm since long. Hence, culturing of P. penetrans using CYG germination pouches as a soil-less medium for plant growth, promises to provide a contamination free environment along with ease in isolation of infected females from the plant
Victor Phani,
Uma Rao
Journal of Nematology, Volume 50 , ISSUE 2, 91–98
Research Article | 23-May-2019
The genus Alicyclobacillus includes Gram-positive, Gram-negative or Gram-variable, acidothermophilic, endospore-forming bacteria, which have been isolated from various environments, mostly acidic and geothermal soils, hot springs, fruit surface and spoiled fruit juices. The members of the Alicyclobacillus genus are characterized by the presence of ω-alicyclic fatty acids (ω-cyclohexane or ω-cycloheptane), the iso and anteiso branched-chain fatty acids, and the hopanoids as the
Justyna Dąbrowska,
Alina Kunicka-Styczyńska
Postępy Mikrobiologii - Advancements of Microbiology, Volume 57 , ISSUE 2, 117–124
research-article | 30-November-2018
sporulation the mother cell engulfs the forespore (Fujita and Losick, 2003). In the final stage of sporulation, the mother cell is lysed (Hosoya et al., 2007), releasing the mature endospore. Several B. subtilis homologous genes involved in sporulation have been characterized in P. penetrans, namely Spo0F, Spo0A, and SpoIIAB (Preston et al., 2003; Schmidt et al., 2004; Trotter and Bishop, 2003) and four transcription factors (sigma factors: Sigma-E, Sigma-F, Sigma-G, and Sigma-K) in. This is the first
Ruhiyyih Dyrdahl-Young,
Weiming Hu,
Peter DiGennaro
Journal of Nematology, Volume 51 , 1–8
research-article | 30-November-2018
their susceptibility to attachment by endospores of P. penetrans (Trudgill et al., 2000; Timper, 2009). Moreover, Tzortzakakis et al. (1996) demonstrated that a population of Meloidogyne javanica developed resistance to endospore attachment when repeatedly challenged with an isolate of the bacterium. The second step of infection is penetration of nematode cuticle by a germ tube (Imbriani and Mankau, 1977; Sayre and Wergin, 1977). Although only 20 to 30% of endospores that attach to the cuticle
Chang Liu,
Pingsheng Ji,
Patricia Timper
Journal of Nematology, Volume 51 , 1–8
original-paper | 23-November-2020
shaking incubator (170 rpm) at 55°C for 18 h and 6 h, respectively. All biofilm assays were carried out with the culture that was 6 h old in the mid-exponential growth phase, and the presence of non-sporulating vegetative cells was confirmed with phase-contrast microscopy. The inoculation process was essential to accelerate thermophilic bacilli’s biofilm production capabilities by delaying their transition to the sporulation phase. The process was substantial to biofilm formation by endospore-forming
TUGBA KİLİC
Polish Journal of Microbiology, Volume 69 , ISSUE 4, 411–419