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Root citrate exudation is thought to be important for phosphate solubilisation. Previous research has concluded that cluster-like roots benefit most from this exudation in terms of increased phosphate uptake, suggesting root structure plays an important role in citrate enhanced uptake (additional phosphate uptake due to citrate exudation). Time resolved computed tomography images of wheat root systems were used as the geometry for 3D citrate-phosphate solubilisation models. Citrate enhanced uptake was correlated with morphological measures of the root systems to determine which had the most benefit. A large variation of citrate enhanced uptake over 11 root structures was observed. Root surface area dominated absolute phosphate uptake but did not explain citrate enhanced uptake. Number of exuding root tips correlated well with citrate enhanced uptake. Root tips in close proximity could collectively exude high amounts of citrate, resulting in a delayed spike in citrate enhanced uptake. Root system architecture plays an important role in citrate enhanced uptake. Singular morphological measurements of the root systems cannot entirely explain variations in citrate enhanced uptake. Root systems with many tips would benefit greatly from citrate exudation. Quantifying citrate enhanced uptake experimentally is difficult as variations in root surface area would overwhelm citrate benefits.
This article was published in the following journal.
Name: The New phytologist
Over the past decades the role of NO and ROS in signaling and cellular response to stress has witnessed an exponential trend line. Despite advances in the subject, our knowledge of the role of NO and ...
Flooding causes oxygen deprivation in soils. Plants adapt to low soil oxygen availability by changes in root morphology, anatomy, and architecture to maintain root system functioning. Essential traits...
Soil compaction is a serious global problem, and is a major cause of inadequate rooting and poor yield in crops around the world. Root system architecture (RSA) describes the spatial arrangement of ro...
Root architecture is very important for plant growth. In this study, we characterized the process of root formation in grapevine (Vitis vinifera L.). Continuous observation of root morphology during d...
Root survival to flooding-induced hypoxic stress is dependent upon maintaining the functionality of the apical root meristem quiescent center (QC), a process that is governed by the basipetal flow of ...
The main goal of root canal treatment is the removal of existing microorganisms and the prevention of introducing new ones to the root canal system. This will require the application of st...
Since root resorption is a frequent consequence of orthodontic treatment, DSP are non-collagenous dentin-specific matrix proteins postulated to be involved in the mineralization of pre-den...
This study evaluates the efficacy and safety of Periodontal Structure Repair device (PRS) compared to conventional periodontal therapy (scaling and root planing) for the treatment of perio...
The aim of the study was to evaluate the root canal treatments performed from 1989 to 1995. Type of complication, success, new endodontic diseases and number of success were reported. Mean...
Sampling of accessed root canals with endodontic paper points during treatment and immediately pre-obturation of endodontic root canals was carried out.
Insertion of a tapered rod through the root canal into the periapical osseous structure to lengthen the existing root and provide individual tooth stabilization.
A cone-shaped structure in plants made up of a mass of meristematic cells that covers and protects the tip of a growing root. It is the putative site of gravity sensing in plant roots.
Phase of endodontic treatment in which a root canal system that has been cleaned is filled through use of special materials and techniques in order to prevent reinfection.
The part of a tooth from the neck to the apex, embedded in the alveolar process and covered with cementum. A root may be single or divided into several branches, usually identified by their relative position, e.g., lingual root or buccal root. Single-rooted teeth include mandibular first and second premolars and the maxillary second premolar teeth. The maxillary first premolar has two roots in most cases. Maxillary molars have three roots. (Jablonski, Dictionary of Dentistry, 1992, p690)
Chemicals used mainly to disinfect root canals after pulpectomy and before obturation. The major ones are camphorated monochlorophenol, EDTA, formocresol, hydrogen peroxide, metacresylacetate, and sodium hypochlorite. Root canal irrigants include also rinsing solutions of distilled water, sodium chloride, etc.