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Genome size influences plant growth and biodiversity responses to nutrient fertilization in diverse grassland communities.
PLoS Biol
December 2024
Department of Biological Sciences, Michigan Technological University, Houghton, Michigan, United States of America.
Experiments comparing diploids with polyploids and in single grassland sites show that nitrogen and/or phosphorus availability influences plant growth and community composition dependent on genome size; specifically, plants with larger genomes grow faster under nutrient enrichments relative to those with smaller genomes. However, it is unknown if these effects are specific to particular site localities with speciifc plant assemblages, climates, and historical contingencies. To determine the generality of genome size-dependent growth responses to nitrogen and phosphorus fertilization, we combined genome size and species abundance data from 27 coordinated grassland nutrient addition experiments in the Nutrient Network that occur in the Northern Hemisphere across a range of climates and grassland communities.
View Article and Find Full Text PDFWho gets better after surgery for degenerative cervical myelopathy? A responder analysis from the multicenter Canadian Spine Outcomes and Research Network.
Spine J
February 2025
Division of Neurosurgery, Department of Surgery, University of Toronto, 149 College Street, 5th Floor, Toronto, Ontario, M5T 1P5, Canada; Institute of Health Policy Management and Evaluation, University of Toronto, 155 College Street, Suite 425, Toronto, Ontario, M5T 3M6, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, 209 Victoria St, Toronto, Ontario, M5B 1T8, Canada. Electronic address:
Background Context: Degenerative cervical myelopathy (DCM) is the most common cause of acquired nontraumatic spinal cord injury worldwide. Surgery is a common treatment for DCM; however, outcomes often vary across patients.
Purpose: To inform preoperative education and counseling, we performed a responder analysis to identify factors associated with treatment response.
Testing the ectomycorrhizal-dominance hypothesis for ecosystem multifunctionality in a subtropical mountain forest.
New Phytol
September 2024
Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
Article Synopsis
- * The study found that higher dominance of EcM associations correlates with increased ecosystem multifunctionality, but the effects vary by forest biome and elevation.
- * The researchers caution that while EcM dominance can enhance multiple ecosystem functions, the impact of mycorrhizal composition on ecosystem health isn't universally applicable and changes across different contexts.
Development of the cervical myelopathy severity index: a new patient reported outcome measure to quantify impairments and functional limitations.
Spine J
March 2024
Division of Neurosurgery, St. Michael's Hospital, University of Toronto, 30 Bond St, Toronto, Ontario M5B1W8, Canada; Institute of Health Policy Management and Evaluation, University of Toronto, 155 College St, Toronto, Ontario M5T3M6, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, 209 Victoria St, Toronto, Ontario M5B1T8, Canada. Electronic address:
Background Context: Existing degenerative cervical myelopathy (DCM) severity scales have significant shortcomings, creating a strong impetus for the development of a practical measurement tool with sound psychometric properties.
Purpose: This work reports the item generation and reduction of the Cervical Myelopathy Severity Index (CMSI), a new DCM patient-reported outcome measure of symptoms and functional limitations.
Design: Prospective observational study.
Leaf functional traits and pathogens: Linking coffee leaf rust with intraspecific trait variation in diversified agroecosystems.
PLoS One
April 2023
Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada.
Research has demonstrated that intraspecific functional trait variation underpins plant responses to environmental variability. However, few studies have evaluated how trait variation shifts in response to plant pathogens, even though pathogens are a major driver of plant demography and diversity, and despite evidence of plants expressing distinct strategies in response to pathogen pressures. Understanding trait-pathogen relationships can provide a more realistic understanding of global patterns of functional trait variation.
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