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Selfish genetic elements

November 15, 2018

Selfish genetic elements


Image credit: J. Arvid Ågren and Andrew G. Clark

Topic Pages Collection

This collection aims to increase the coverage of computational biology and genetics-related topics                                                  in Wikipedia by rewarding authors with a citable, PubMed-indexed version of the living document on Wikipedia.

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11/12/2018

RESEARCH ARTICLE

Arabidopsis class I formins control membrane-originated actin polymerization at pollen tube tips

Using state-of-the-art live-cell imaging in combination with reverse genetic approaches, Yaxian Lan and colleagues demonstrate that two class I formins, Arabidopsis formin 3 (AtFH3) and formin 5 (AtFH5), are involved in the regulation of apical actin polymerization and actin array construction in pollen tubes. They find that both of them are localized to the plasma membrane (PM) at pollen tube tips.

Image credit: Yaxian Lan and colleagues

Arabidopsis class I formins control membrane-originated actin polymerization at pollen tube tips

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Current Issue

Current Issue October 2018

11/12/2018

RESEARCH ARTICLE

The zinc finger protein DCM1 is required for male meiotic cytokinesis by preserving callose in rice

Meiotic cytokinesis influences the fertility and ploidy of gametes. However, limited information is available on the genetic control of meiotic cytokinesis in plants. Here, Chao Zhang and colleagues identify a rice mutant with low male fertility, defective callose in meiosis 1 (dcm1).The pollen grains of dcm1 are proved to be defective in exine formation.

Image credit: Chao Zhang and colleagues

The zinc finger protein DCM1 is required for male meiotic cytokinesis by preserving callose in rice

11/07/2018

research article

Genome-wide CRISPR-dCas9 screens in E. coli identify essential genes and phage host factors

Here, Rousset, Cui and colleagues present the use of a library of ~92,000 guide RNAs directing the dCas9 protein to silence, one by one, all the genes in the chromosome of E. coli. The screens highlight previously known and new genetic interactions between phages and their host’s pathways, and emphasize the importance of bacterial capsule in the resistance to multiple phages.

Genome-wide CRISPR-dCas9 screens in E. coli identify essential genes and phage host factors

Image credit: Rousset, Cui and colleagues

11/06/2018

research article

Functional equivalence of germ plasm organizers

Pritesh Krishnakumar, Stephen Riemer and colleagues show that the two germ plasm organizers, Oskar (Osk) from Drosophila and Bucky ball (Buc) from zebrafish, show similar activities during germ cell specification through the use of a cross species approach. The study data may provide the first example of two proteins with the same biological role, but distinct sequences.

Functional equivalence of germ plasm organizers

Image credit: Krishnakumar, Riemer and colleagues

09/13/2018

review

Structure and function of archaeal histones

Bram Henneman and colleagues discuss the many possibilities of archaeal histone involvement in transcription regulation.

Structure and function of archaeal histones

Image credit: Bram Henneman and coleagues

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