Recent Posts

SIEVE ELEMENT-LINING CHAPERONE 1 restricts aphid feeding on Arabidopsis during heat stress ($)

Aphids are major pests that damage plants by sucking out phloem sap and as by acting as vectors in transmission of more than 300 different viruses. Kloth et al. used a high-throughput method involving video-tracking of aphid behavior on leaf discs to score 350 Arabidopsis accessions for aphid resistance.…

Review: Sensing danger – key to activating plant immunity

The first step in defending yourself is recognizing that you need to defend yourself. Gust et al. review the mechanisms through which plants sense danger, drawing parallels to similar mechanisms in animals. They define three categories of danger signals. Exogenous signals are “non-self” signals,…

Tracking effector delivery in Irish famine potato pathogen

Pathogenic microbes interfere with the host cellular and physiological processes to promote infection. This interaction is monitored by pathogen molecules called effectors that either act in intercellular space or enter the host cells. Mechanisms underlying the uptake of these effectors are not fully…

Special delivery: An independent secretion pathway for the delivery of cytoplasmic pathogen effectors

Pathogenic microbes manipulate host plants by secreting effector molecules that interfere with immunity. Bacterial phytopathogens achieve this using specialized secretion apparatuses that act as molecular ‘hypodermic needles’ to inject effector proteins directly into plant cells. In comparison, effector…

Stem parasitic plant Cuscuta australis (dodder) transfers herbivory-induced signals among plants

Dodders (Cuscuta spp) are parasitic plants, which absorb water and nutrients from their host. Their vines can embrace, and in this way connect, more than one host. Hettenhausen et al. showed that in certain situations these connections serve as communication routes. In their experiment a pair of soybean…

Artificial light at night as a new threat to pollination ($)

During our holidays, many of us plant scientists love to go to re-energize in remote places, ideally with no technology. Have you ever imagined how our “advanced” way of living is changing our environment?  In a recent paper, Knop et al. show evidence that nocturnal pollinators are negatively affected…

Opinion: Plant hormones: Key players in gut microbiota and human diseases?

Chanclud and Lacombe have written an intriguing Opinion article asking to what extent plant hormones affect animal gut microbiota and human disease. In support of this question, they observe that many microbes and even some animals can perceive and respond to plant hormones, or produce plant-hormone…

Three-dimensional analysis of chloroplast structures associated with virus infection

It’s not uncommon for viruses to manipulate the host’s membrane system to create protected structures for viral replication. These viral replication complexes (VRCs) “are thought to shield viruses from host defense systems such as RNA silencing, and … provide a microenvironment for enriching…

MicroRNAs from the parasitic plant Cuscuta campestris target host messenger RNAs

There’s only one thing worse than having a parasite suck the life juices out of you, and that’s having a parasite suck the life juices out of you while simultaneously injecting you with miRNAs to increase your vulnerability. Shahid et al. looked at microRNAs isolated from dodder (Cuscuta campestris),…