The paper describes the anatomical variation of four roots in a mandibular permanent first molar diagnosed using multiple angulated preoperative radiographs and its successful nonsurgical endodontic management. Careful observation and exploration of the pulpal floor using a dental operating microscope revealed a peculiar developmental root fusion line on the pulp chamber floor. Based on the above observation, a correlation between this unusual line and the existence of additional roots has been proposed and discussed.
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http://dx.doi.org/10.1155/2012/237302 | DOI Listing |
Biochem Biophys Res Commun
December 2024
Department of Systems Biology, Yonsei University, Seoul, 03722, Republic of Korea. Electronic address:
The root epidermis of Arabidopsis (Arabidopsis thaliana) consists of two distinct cell types: hair (H) cells and non-hair (N) cells, whose patterning is regulated by a network of genes. Among these, the WEREWOLF (WER) gene, encoding an R2R3 MYB transcription factor, acts as a master regulator by promoting the expression of key downstream genes, such as GLABRA2 and CAPRICE. However, the mechanisms controlling WER expression have remained largely unexplored.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
January 2025
Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, Université Toulouse III Paul Sabatier, Institut National Polytechnique Toulouse, Castanet-Tolosan 31320, France.
Plants have colonized lands 450 million years ago. This terrestrialization was facilitated by developmental and functional innovations. Recent evo-devo approaches have demonstrated that one of these innovations was the mutualistic arbuscular mycorrhizal symbiosis (AMS).
View Article and Find Full Text PDFFront Microbiol
December 2024
State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China.
Introduction: Functional rhizosphere microbiomes (FRM) are critical for plant health and yield. However, the ecological succession of FRM and their links to plant genetic factors across the life cycle of perennial plants remain poorly understood.
Methods: This study profiled FRM, including plant-beneficial bacteria (PBB) and fungal plant pathogens (FPP), across different developmental stages of .
J Genet Genomics
December 2024
Institute of Genetics and Developmental Biology, Key Laboratory of Seed Innovation, Chinese Academy of Sciences, Beijing 100101, China. Electronic address:
Saline-alkali soil severely reduces the productivity of crops, including maize (Zea mays). Although several genes associated with saline-alkali tolerance have been identified in maize, the underlying regulatory mechanism remains elusive. Here, we report a direct link between colonization by arbuscular mycorrhizal fungi (AMF) and saline-alkali tolerance in maize.
View Article and Find Full Text PDFBMC Oral Health
December 2024
Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
Background: Dens invaginatus is a developmental abnormality originating from tooth development, including coronal invaginatus and radicular invaginatus. The reported incidence varies greatly due to diagnostic techniques, classification criteria and race. The incidence of dens invaginatus in China was not clear, and the impact of dens invaginatus on periodontal support tissue were rarely reported.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!