The size of plant organs, such as leaves and flowers, is determined by an interaction of genotype and environmental influences. Organ growth occurs through the two successive processes of cell proliferation followed by cell expansion. A number of genes influencing either or both of these processes and thus contributing to the control of final organ size have been identified in the last decade. Although the overall picture of the genetic regulation of organ size remains fragmentary, two transcription factor/microRNA-based genetic pathways are emerging in the control of cell proliferation. However, despite this progress, fundamental questions remain unanswered, such as the problem of how the size of a growing organ could be monitored to determine the appropriate time for terminating growth. While genetic analysis will undoubtedly continue to advance our knowledge about size control in plants, a deeper understanding of this and other basic questions will require including advanced live-imaging and mathematical modeling, as impressively demonstrated by some recent examples. This should ultimately allow the comparison of the mechanisms underlying size control in plants and in animals to extract common principles and lineage-specific solutions.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.cub.2012.02.010 | DOI Listing |
Biomater Sci
March 2025
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China.
Hernia typically does not heal spontaneously. Large-pore patches, most notably polypropylene patches (PP patches), are the gold standard in hernia repair surgery. However, a single patch is insufficient for both anti-adhesion and tissue fusion, leading to complications such as organ adhesions.
View Article and Find Full Text PDFEnferm Infecc Microbiol Clin (Engl Ed)
March 2025
Critical Care Department, Hospital Universitari Parc Taulí, Sabadell, Spain; Departament de Medicina, Universitat Autonoma de Barcelona, UAB, Spain. Electronic address:
Introduction: Surveillance is an essential part of the control of device-related nosocomial infections (NI) in intensive care units (UCIs). The aim of this study was to analyze the evolution of device-related infection rates in ICUs over the last 13 years, including ventilator-associated pneumonia (VAP), catheter-related bloodstream infection (CRBSI) and catheter-associated urinary tract infection (CAUTI).
Material And Methods: Patients admitted to the 44 ICUs at 43 participating hospitals of the VINCat Program from 2010 to 2022 were included, taking into account three periods: first period (2010-2013), second period (2014-2017) and third period (2018-2022).
Poult Sci
March 2025
State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
Sperm motility is a critical indicator of semen quality and determines the reproduction performance in male poultry. However, compared to chickens and ducks, very little is known about the physiological basis of varying levels of sperm motility as well the underlying regulatory mechanisms in geese. To address this, in the present study, a systematic comparison of semen quality parameters and histomorphological characteristics and genome-wide transcriptomic profiles of testes and epididymis were performed in ganders with high and low sperm motility.
View Article and Find Full Text PDFTransplant Direct
April 2025
Division of Surgical Transplantation, Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX.
Background: With the intent to mitigate waitlist disparities, the median model for end-stage liver disease (MELD) at transplant minus 3 policy nevertheless decreased access to liver transplant for patients with hepatocellular carcinoma (HCC). However, the adoption of machine perfusion (MP) technologies has shown promise in improving deceased donor graft yield and utilization. To understand current use for patients with HCC, we examined liver transplant patterns with MP and the characteristics of patients with HCC receiving an MP liver.
View Article and Find Full Text PDFNutrients
February 2025
Department of Biological Sciences, Faculty of Science, Beirut Arab University, P.O. Box 115020, Riad El Solh, Beirut 11072809, Lebanon.
, , , and are frequently consumed as a traditional Middle Eastern medicine to promote health and treat various diseases. However, concerns have been raised about their possible harmful effect in humans. Limited research has examined their chronic toxicity in rats, and their combined exposure effects are still unknown.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!