Recent Posts

Microtubule involvement in stomatal dynamics

Stomatal dynamics have been investigated in terms of ion exchange involvements, turgor pressure fluctuations, and transcriptional changes, particularly in response to environmental stresses. However, the involvement of the cytoskeleton during this process, particularly concerning the role of microtubules…

DROUGHT HYPERSENSITIVE negatively regulates cuticular wax biosynthesis by promoting the degradation of transcription factor ROC4 in rice

Wax covering the outer surface of the shoot (epicuticular wax) is crucial in the ability of the plant to conserve water. Wang et al. identified a drought hypersensitive plant that overexpresses an E3 ubiquitin ligase which they named DROUGHT HYPERSENSITIVE. In these overexpression plants, there was a…

Extremely flexible infection programs in a fungal plant pathogen

Filamentous plant pathogens have developed an extra-ordinary level of dynamic genome architecture that adapts to changing host environment in the best possible way to promote infection. There are very limited studies describing the impact of this genome plasticity on phenotypic variation. Haueisen et…

Evolutionary transitions between beneficial and phytopathogenic Rhodococcus

Rodococcus bacteria are often identified as causal agents in disease outbreaks. Savory et al. analyzed 60 isolates from diseased plants. By comparing these new isolates and previous isolates, they found that 64 of 66 pathogenic isolates carry a linear virulence plasmid, and that all but four carried…

Point of View: A transatlantic perspective on 20 emerging issues in biological engineering studies

“Horizon scanning” describes the process of trying to rationally predict the future.  Wintle et al. describe the results from a horizon-scanning exercise to identify emerging issues in biological engineering. The authors used an iterative approach to identify key issues in the near and longer-term…

Plant RuBisCo assembly in E. coli with five chloroplast chaperones ($)

In plants, Ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCo), the enzyme responsible for fixing carbon, is a made up of 8 each of the large and small subunits, making the L8S8 form. Efforts to study this enzyme have been thwarted by the inability to assemble an active L8S8 form in a heterologous…

Review: The role of water in plant-microbe interactions ($)

Water, a principal component on earth has also a fundamental role in maintenance of plants, microbes and the disease that is shaped by such interaction. Pathogenic disease outbreaks occur only in favorable environmental conditions, and atmospheric humidity is essential for pathogenesis. This review by…

Chromatin region accessibility: cross-species comparisons and cell type distinctions

Cis-regulatory elements direct transcriptional output during cell differentiation and coordinate adaptive responses to environmental stress. DNA becomes open and accessible when nucleosomes are displaced by DNA-binding proteins, indicating a correlation between open chromatin regions and transcriptional…

Mediator complex subunits in the regulation of phenylpropanoid biosynthesis ($)

The Mediator complex is a transcriptional co-regulator that is conserved across kingdoms. Several subunits have been identified through genetic approaches in Arabidopsis. Recessive loss-of-function mutants of MED5 subunits cause phenylpropanoid overaccumulation, but ef4-3, a semi-dominant mutation of…