Bacteria
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB34243 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:soil bacteria diversity and community structure under crop rotation combined with short-term fallow
| PRJNA589994 | ENA
Project description:This study evaluates the transcriptome of 3 Arabidopsis thaliana genotypes (Col-0, phf1 and phr1/phl1) growing in soil treated under a gradient of fertilization regimes.
2019-04-06 | GSE129394 | GEO
Project description:Bacteria have evolved many strategies to spare energy when nutrients become scarce. One widespread such strategy is facultative phototrophy, which helps heterotrophs supplement their energy supply using light. Our knowledge on the impact that such behaviors have on bacterial fitness and physiology is, however, still limited. Here, we study how a representative of the genus Porphyrobacter, in which aerobic anoxygenic phototrophy is ancestral, responds to different light regimes under nutrient limitation. We show that bacterial survival in stationary phase relies on functional reaction centers and varies depending on the light regime. Under dark‑light alternance, our bacterial model presents a diphasic life history dependent on phototrophy: during dark phases, the cells inhibit DNA replication and part of the population lyses and releases nutrients, while subsequent light phases allow for the recovery and renewed growth of the surviving cells. We correlate these cyclic variations with a pervasive pattern of rhythmic transcription which reflects global changes in diurnal metabolic activity. Finally, we demonstrate that, compared to either a phototrophy null mutant or a bacteriochlorophyll a overproducer, the wild type strain is better adapted to natural environments, where regular dark‑light cycles are interspersed with additional accidental dark episodes. Overall, our results highlight the importance of light‑induced biological rhythms in a new model of aerobic anoxygenic phototroph representative of an ecologically important group of environmental bacteria.
2023-10-12 | GSE245047 | GEO
Project description:Effect of amorphous silica fertilization on wheat bacteria
| PRJEB61929 | ENA
Project description:Gene expression changes and polymorphisms were investigated in genetically related mosquito lines maintained for 30 generations under four different selection regimes. All mosquito line derived from the same parental line (Anopheles gambiae Tiassale line from Ivory coast). Selection regimes were as follows: i) no selection pressure (Control line), ii) selection at each generation at larval stage with a mixture of insecticides used against agricultural pests (Ins line); iii) selection at each generation at larval stage with a mixture of herbicides and fungicides used on crops (Herb line), iv) selection at each generation at larval stage with a mixture of both insecticides and non-insecticide compounds (compounds ii + iii, Mix line). The transcriptome of each line was sequenced using RNA-seq with four replicates per condition.
2023-05-01 | E-MTAB-12756 | biostudies-arrayexpress