The allelic rice immune receptor Pikh confers extended resistance to strains of the blast fungus through a single polymorphism in the effector binding interface
De la Concepcion reveal the mechanistic basis of extended recognition specificity conferred by a Pik allele, Pikh. A single residue in Pikh-HMA increases binding to AVR-Pik variants, leading to an extended effector response in planta.
The unequal impact of parenthood in academia
Morgan et al. quantify the impact of parenthood on scholarship using an extensive survey of the timing of parenthood events, longitudinal publication data, and perceptions of research expectations among 3064 tenure-track faculty at 450 Ph.D.-granting computer science, history, and business departments across the United States and Canada, along with data on institution-specific parental leave policies. Parenthood explains most of the gender productivity gap by lowering the average short-term productivity of mothers, even as parents tend to be slightly more productive on average than nonparents.
Host-interactor screens of Phytophthora infestans RXLR proteins reveal vesicle trafficking as a major effector-targeted process
This study aimed to identify the host processes targeted by the RXLR class of host-translocated effectors of the potato blight pathogen Phytophthora infestans. To this end, Petre et al. performed an in planta protein-protein interaction screen by transiently expressing P. infestans RXLR effectors in Nicotiana benthamiana leaves followed by co-immunoprecipitation and liquid chromatography tandem mass spectrometry.
The Plant Cell
Photosynthetic plasticity of a tropical tree species, Tabebuia rosea, in response to elevated temperature and [CO2]
Atmospheric and climate change will expose tropical forests to conditions they have not experienced in millions of years. To better understand the consequences of this change Slot et al. studied photosynthetic acclimation of the neotropical tree species Tabebuia rosea to combined 4°C warming and twice-ambient (800 ppm) CO2. They measured temperature responses of the maximum rates of ribulose 1,5-bisphosphate carboxylation (VCMax), photosynthetic electron transport (JMax), net photosynthesis (PNet), and stomatal conductance (gs), and fitted the data using a probabilistic Bayesian approach.
[REDUX] A reporter for noninvasively monitoring gene expression and plant transformation
He et al. construct a new reporter RUBY that converts tyrosine to vividly red betalain, which is clearly visible to naked eyes without the need of using special equipment or chemical treatments. We show that RUBY can be used to noninvasively monitor gene expression in plants.
The effects of climate change on floral anthocyanin polymorphisms
Sullivan and Koski used descriptions of flower colour from over 1900 herbarium records representing 12 North American species spanning 124 years to test whether anthocyanin-based flower colour has responded to global change.
Proceedings of the Royal Society B: Biological Sciences
Conserved pleiotropy of an ancient plant homeobox gene uncovered by cis-regulatory dissection
Hendleman et al. explore the functional divergence of WUSCHEL HOMEOBOX9 ( WOX9), suggested to have species-specific roles in embryo and inflorescence development. Using a cis-regulatory editing drive system, they generate a comprehensive allelic series in tomato, which revealed hidden pleiotropic roles for WOX9.
Predicting transcriptional responses to cold stress across plant species
Meng et al. show that models trained using data on which genes respond to cold in one species can predict which genes will respond to cold in related species, even when the training and target species vary in their degree of tolerance to cold.
Emergence and diversification of a highly invasive chestnut pathogen lineage across southeastern Europe
The chestnut blight fungus Cryphonectria parasitica first decimated the North American chestnut, and a more recent outbreak threatens European chestnut stands. To unravel the chestnut blight invasion of southeastern Europe, Stauber et al. sequenced 230 genomes of predominantly European strains.