Auxin's capacity to regulate aspects of plant development has been well characterized in model plant systems. In contrast, orchids have received considerably less attention, but the realization that many orchid species are endangered has led to culture-based propagation studies which have unveiled some functions for auxin in this system. This mini-review summarizes the many auxin-mediated developmental responses in orchids that are consistent with model systems; however, it also brings to the forefront auxin responses that are unique to orchid development, namely protocorm formation and ovary/ovule maturation. With regard to shoot establishment, we also assess auxin's involvement in orchid germination, PLB formation, and somatic embryogenesis. Further, it makes evident that auxin flow during germination of the undifferentiated, but mature, orchid embryo mirrors late embryogenesis of typical angiosperms. Also discussed is the use of orchid protocorms in future phytohormone studies to better understand the mechanisms behind meristem formation and organogenesis.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4622584 | PMC |
| http://dx.doi.org/10.4161/psb.32169 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
First report of brown spot disease caused by on in Guangxi of China.
Plant Dis
January 2025
Guangxi University, College of Agriculture, Nanning, Guangxi, China;
Disocatus ackermannii, commonly referred to as Orchid Cactus, is a striking succulent belonging to the Cactaceae family. Its unique appearance and captivating characteristics make it a sought-after addition to gardens and courtyards beautification. In June 2023, 20-30% of D.
View Article and Find Full Text PDFThe edaphic factor and orchids: Gymnadenia conopsea from contrasting geologies in the Central Balkans.
Planta
January 2025
Institute of Botany and Botanical Garden, Faculty of Biology, University of Belgrade, Belgrade, Serbia.
Two different strategies for the distribution of macro- and trace elements can be observed in the terrestrial orchid Gymnadenia conopsea. Most trace elements are not translocated to the above-ground parts, whereas for macro-elements the trend was reversed, with the highest accumulation in the distal parts of the plants. Edaphic stress is one of the main factors affecting plant fitness, but it is still poorly understood, even in rare plants such as orchids.
View Article and Find Full Text PDFExploring the Link Between Obligate Anaerobe-Related Dysbiosis and Prostate Cancer Development: A Pilot Study.
Cancers (Basel)
December 2024
Wolfson Institute of Population Health, Faculty of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK.
Background/objectives: Several independent studies have associated prostate cancer (PCa) with specific groups of bacteria, most of them reporting the presence of anaerobic or microaerophilic species such as (). Such findings suggest a prostate cancer-related bacterial dysbiosis, in a manner similar to the association between infection and gastric cancer. In an earlier exploratory study looking for such dysbiosis events, using a culturomics approach, we discovered that the presence of obligate anaerobes (OAs) along with was associated with increased prostate-specific antigen (PSA) levels in 39 participants.
View Article and Find Full Text PDFGuidance on biomaterials for periodontal tissue regeneration: Fabrication methods, materials and biological considerations.
Dent Mater
January 2025
Department of Cariology, Restorative Sciences and Endodontics, University of Michigan, School of Dentistry, Ann Arbor, MI 48109, USA; Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, MI 48109, USA. Electronic address:
Regeneration of the multiple tissues and interfaces in the periodontal complex necessitates multidisciplinary evaluation to establish structure/function relationships. This article, an initiative of the Academy of Dental Materials, provides guidance for performing chemical, structural, and mechanical characterization of materials for periodontal tissue regeneration, and outlines important recommendations on methods of testing bioactivity, biocompatibility, and antimicrobial properties of biomaterials/scaffolds for periodontal tissue engineering. First, we briefly summarize periodontal tissue engineering fabrication methods.
View Article and Find Full Text PDFImpact of Fungal Symbionts of Co-occurring Orchids on the Seed Germination of Serapias orientalis and Spiranthes spiralis.
Curr Microbiol
January 2025
Faculty of Science, Department of Biology, Ondokuz Mayis University, Samsun, 55139, Türkiye.
Interactions with mycorrhizal fungi are increasingly recognized as crucial ecological factors influencing orchids' distribution and local abundance. While some orchid species interact with multiple fungal partners, others show selectivity in their mycorrhizal associations. Additionally, orchids that share the same habitat often form relationships with different fungal partners, possibly to reduce competition and ensure stable coexistence.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!