How bacteria arrange their organelles

Mauriello, Emilia M. F.

doi:10.7554/elife.43777

Cited by 8 publications

(4 citation statements)

References 10 publications

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“…The chloroplast (cp) is a significant semiautonomous organelle that can absorb carbon dioxide and release oxygen while converting light energy into chemical energy in green plants (Yin et al, 2017), phototrophic bacteria (Trüper, 1987;Mauriello, 2019), and algae (Menke et al, 1965). Chloroplasts can also be used to elucidate the genetic relationships among species and explore plant phylogeny and nuclear evolution (Daniell et al, 2016;Xiong et al, 2020;Zhao and Zhu, 2020), because of its feature of replication initiation, genome stabilization, and maternally-inherited gene conservation (Daniell et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Characterization and Comparative Analysis of Complete Chloroplast Genomes of Three Species From the Genus Astragalus (Leguminosae)

Tian

et al. 2021

Front. Genet.

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Astragalus is the largest genus in Leguminosae. Several molecular studies have investigated the potential adulterants of the species within this genus; nonetheless, the evolutionary relationships among these species remain unclear. Herein, we sequenced and annotated the complete chloroplast genomes of three Astragalus species—Astragalus adsurgens, Astragalus mongholicus var. dahuricus, and Astragalus melilotoides using next-generation sequencing technology and plastid genome annotator (PGA) tool. All species belonged to the inverted repeat lacking clade (IRLC) and had similar sequences concerning gene contents and characteristics. Abundant simple sequence repeat (SSR) loci were detected, with single-nucleotide repeats accounting for the highest proportion of SSRs, most of which were A/T homopolymers. Using Astragalus membranaceus var. membranaceus as reference, the divergence was evident in most non-coding regions of the complete chloroplast genomes of these species. Seven genes (atpB, psbD, rpoB, rpoC1, trnV, rrn16, and rrn23) showed high nucleotide variability (Pi), and could be used as DNA barcodes for Astragalus sp. cemA and rpl33 were found undergoing positive selection by the section patterns in the coded protein. Phylogenetic analysis showed that Astragalus is a monophyletic group closely related to the genus Oxytropis within the tribe Galegeae. The newly sequenced chloroplast genomes provide insight into the unresolved evolutionary relationships within Astragalus spp. and are expected to contribute to species identification.

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Section: Introductionmentioning

confidence: 99%

Characterization and Comparative Analysis of Complete Chloroplast Genomes of Three Species From the Genus Astragalus (Leguminosae)

Tian

et al. 2021

Front. Genet.

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“…The chloroplast is a cellular organelle that absorbs carbon dioxide and releases oxygen. Meanwhile, it converts light energy into chemical energy in organisms, including green plants, algae, and phototrophic bacterias [7][8][9]. Although photosynthesis is considered the prominent role of chloroplast, which also plays crucial roles in many biological processes, involving the synthesis of nucleotides, amino acids, fatty acids, vitamins, phytohormones, and plenty of metabolites and metabolism of sulfur and nitrogen [10].…”

Section: Rubus Bambusarummentioning

confidence: 99%

The Complete Chloroplast Genome Sequence of Four Plant Species, Their SSR Identification and Phylogenetic Analysis

Zhu¹,

Zhang²,

Xiang³

et al. 2021

Preprint

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The chloroplast genome is conservative and stable, which can be employed to resolve genotypes. Currently, published nuclear sequences and molecular markers failed to differentiate the species from taxa robustly, including Machilus leptophylla, Hanceola exserta, Rubus bambusarum, and Rubus henryi. In this study, the four chloroplast genomes were characterized, and then their simple sequence repeats (SSRs) and phylogenetic positions were analyzed. The results demonstrated the four chloroplast genomes consisted of 152.624 kb, 153.296kb, 156.309 kb, and 158.953 kb in length, involving 124, 130, 129, and 131 genes, respectively. Moreover, the chloroplast genomes contained typical four regions. Six classes of SSR were identified from the four chloroplast genomes, in which mononucleotide was the class with the most members. The types of the repeats were various within individual classes of SSR. Phylogenetic trees indicated that M. leptophylla was clustered with M. yunnanensis, and H. exserta was confirmed under family Ocimeae. Additionally, R. bambusarum and R. henryi were clustered together, whereas they did not belong to the same species due to the differing SSR features. This research would provide evidence for resolving the species and contributed new genetic information for further study.

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“…In Synechococcus elongatus, McdA is an ATPase that interacts with the nucleoid in its ATP-bound form. McdB [10,11]. A common feature shared by the Min and the Mcd systems is the presence of a hydrolyzable nucleotide that regulates the interaction and localization of the oscillating proteins.…”

Section: Introductionmentioning

confidence: 99%

Dynamic polarity control by a tunable protein oscillator in bacteria

Herrou

Mignot

2020

Current Opinion in Cell Biology

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In bacteria, cell polarization involves the controlled targeting of specific proteins to the poles, defining polar identity and function. How a specific protein is targeted to one pole and what are the processes that facilitate its dynamic relocalization to the opposite pole is still unclear. The Myxococcus xanthus polarization example illustrates how the dynamic and asymmetric localization of polar proteins enable a controlled and fast switch of polarity. In M. xanthus, the opposing polar distribution of the small GTPase MglA and its cognate activating protein MglB defines the direction of movement of the cell. During a reversal event, the switch of direction is triggered by the Frz chemosensory system, which controls polarity reversals through a so-called gated relaxation oscillator. In this review, we discuss how this genetic architecture can provoke sharp behavioral transitions depending on Frz activation levels, which is central to multicellular behaviors in this bacterium. .

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How bacteria arrange their organelles

Abstract: The structures responsible for photosynthesis in bacteria use the nucleoid and two unique proteins as a scaffold to position themselves.

Cited by 8 publications

References 10 publications

Characterization and Comparative Analysis of Complete Chloroplast Genomes of Three Species From the Genus Astragalus (Leguminosae)

Characterization and Comparative Analysis of Complete Chloroplast Genomes of Three Species From the Genus Astragalus (Leguminosae)

The Complete Chloroplast Genome Sequence of Four Plant Species, Their SSR Identification and Phylogenetic Analysis

Dynamic polarity control by a tunable protein oscillator in bacteria

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