Entries by Amey Redkar

An N- terminal motif in NLR immune receptors is functionally conserved across distantly related plant species (bioRxiv)

Plants have robust NLR (nucleotide-binding, leucine-rich repeat proteins) immune signaling networks consisting of sensor NLRs and helper NLRs that counteract diverse plant pathogens by inducing cell death at sites of pathogen infection. A recent preprint by Adachi et al. has defined an N terminal motif (MADA motif) that contributes to NLR-mediated cell death. By using […]

A calmodulin-gated calcium channel links pathogen patterns to plant immunity ($) (Nature)

Calcium ions mediate calcium-based defense responses in pattern triggered immunity (PTI) upon detection of pathogen patterns by plant surface receptors. A new study by Tian et al. has elucidated the molecular events that activate the calcium response. The authors show that adequeate calcium nutrient status is required to trigger immune response. EMS mutagenesis screeing identified […]

Major domestication-related phenotypes in indica rice are due to loss of miRNA-mediated laccase silencing (Plant Cell)

Rice (Oryza sativa) is derived from breeding of perennial wild ancestors with long stalks and few seeds to short plants with enlarged panicles (inflorescences). Many known domestication changes are due to changes in transcription factors or modulation of enzymatic actions. Recent work by Swetha et al. profiled small RNAs from multiple indica rice lines together […]

Biological relevance of VOCs emitted during the pathogenic interactions (Mol. Plant Pathol.)

It is well known that upon pathogenic infections, plants defend themselves by emission of volatile organic compounds (VOCs) as one of the defence strategies. This work by Cellini et al. aims to understand the biological relevance of these organic volatiles in the fire blight disease of apple caused by Erwinia amylovora (Ea). The authors performed […]

What We’re Reading: February 16th

Guest Editor: Dr. Amey Redkar Amey is a postdoc at The Sainsbury Laboratory, Norwich, UK and has been a Plantae Fellow since September 2017. He is working to understand the interaction of plants and pathogens during disease development. His current research which is funded by EMBO Long Term Fellowship focuses on pathogen Albugo candida, which […]

Review. Rise of a cereal killer:  The biology of Magnaporthe oryzae biotrophic growth

The fungal pathogen Magnaporthe oryzae causes one of the most destructive diseases of rice, destroying around 10-30% of rice production world-wide. The pathogen undergoes different developmental changes and produce specialized infectious structures in order to rapidly proliferate within the host cells. The detailed molecular processes of how the fungus co-ordinates this complex infection pattern is […]

Opinion: Plant pathogen effector proteins as manipulators of host microbiomes? (Mol Plant)

To understand disease development, effector research has mainly focused on the direct interaction of pathogen-derived molecules with plant host targets, or their sensing by surface or intracellular receptors. Recently, attention has turned to the plant microbiome and its key role in maintaining plant health. How microbial communities are manipulated by plant pathogens in sensing and […]

The biotrophic development of Ustilago maydis studied by RNAseq analysis (Plant Cell)

The corn smut fungus Ustilago maydis that causes tumorous symptoms on all aerial parts of maize has established itself as a model system to dissect host colonization strategies by biotrophic fungi. Transcriptional responses upon U. maydis colonization were previously demonstrated by several studies using an engineered solopathogenic strain of U. maydis. However, a time-resolved transcriptional […]

Update: SnRK1 kinase as a central mediator of energy signaling between different organelles (Plant Physiology)

The heterotrimeric SNF1-related protein kinase 1 (SnRK1) in plants is an orthologue of yeast SNF1 (sucrose non-fermenting 1) kinase and the mammalian AMPK (AMP-58 activated protein kinase). A significant array of genetic evidence during the past years has identified SnRK1 as a key regulator of cellular metabolism during starvation and nutrient acquisition. Yet, the connections […]