Plasticity of the Arabidopsis Root System under Nutrient Deficiencies
TLDR
A systematic comparison of RSA responses to nutrient deficiencies provides a comprehensive view of the overall changes in root plasticity induced by the deficiency of single nutrients and provides a solid basis for the identification of nutrient-sensitive steps in the root developmental program.Abstract:
Plant roots show a particularly high variation in their morphological response to different nutrient deficiencies. Although such changes often determine the nutrient efficiency or stress tolerance of plants, it is surprising that a comprehensive and comparative analysis of root morphological responses to different nutrient deficiencies has not yet been conducted. Since one reason for this is an inherent difficulty in obtaining nutrient-deficient conditions in agar culture, we first identified conditions appropriate for producing nutrient-deficient plants on agar plates. Based on a careful selection of agar specifically for each nutrient being considered, we grew Arabidopsis (Arabidopsis thaliana) plants at four levels of deficiency for 12 nutrients and quantified seven root traits. In combination with measurements of biomass and elemental concentrations, we observed that the nutritional status and type of nutrient determined the extent and type of changes in root system architecture (RSA). The independent regulation of individual root traits further pointed to a differential sensitivity of root tissues to nutrient limitations. To capture the variation in RSA under different nutrient supplies, we used principal component analysis and developed a root plasticity chart representing the overall modulations in RSA under a given treatment. This systematic comparison of RSA responses to nutrient deficiencies provides a comprehensive view of the overall changes in root plasticity induced by the deficiency of single nutrients and provides a solid basis for the identification of nutrient-sensitive steps in the root developmental program.read more
Citations
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Root Endophyte Colletotrichum tofieldiae Confers Plant Fitness Benefits that Are Phosphate Status Dependent
Kei Hiruma,Kei Hiruma,Nina Gerlach,Soledad Sacristán,Ryohei Thomas Nakano,Ryohei Thomas Nakano,Stéphane Hacquard,Barbara Kracher,Ulla Neumann,Diana Ramírez,Marcel Bucher,Richard J. O'Connell,Richard J. O'Connell,Paul Schulze-Lefert,Paul Schulze-Lefert +14 more
TL;DR: It is shown that C. tofieldiae is an endemic endophyte in natural Arabidopsis thaliana populations in central Spain and that the host’s phosphate starvation response (PSR) system controls Ct root colonization and is needed for plant growth promotion (PGP).
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Nitrate Transport, Sensing, and Responses in Plants
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Magnesium deficiency in plants: An urgent problem
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Roots withstanding their environment : Exploiting root system architecture responses to abiotic stress to improve crop tolerance
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TL;DR: This work highlights what is known about the importance of individual root system components for nutrient acquisition and how developmental and physiological responses can be coupled to increase nutrient foraging by roots and reviews prominent molecular mechanisms involved in altering the root system in response to local nutrient availability or to the plant's nutritional status.
References
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Application of chelator-buffered nutrient solution technique in studies on zinc nutrition in rice plant (Oryza sativa L.)
TL;DR: In this paper, the use of Fe2+ buffered with Ferrozine (FZ) was evaluated for study of zinc deficiency in rice compared to a conventional nutrient solution technique, and the results showed that growth of rice plants in FZ+HEDTA-buffered nutrient solution was similar to that in the conventional solution.
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Evidence That Sulfur Deficiency Enhances Molybdenum Transport in Xylem Sap of Tomato Plants
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Journal ArticleDOI
RootScape: A Landmark-Based System for Rapid Screening of Root Architecture in Arabidopsis
Daniela Ristova,Ulises Rosas,Gabriel Krouk,Sandrine Ruffel,Kenneth D. Birnbaum,Gloria M. Coruzzi +5 more
TL;DR: RootScape is presented, a landmark-based allometric method for rapid phenotyping of RSA using Arabidopsis as a case study and showed that RootScape efficiently captured nearly all the variation in root architecture detected by measuring individual root traits and is 5 to 10 times faster than conventional scoring.
Journal ArticleDOI
Calcium-transport in Wurzeln von Mais- und Bohnenkeimpflanzen
H. von Marschner,Ch. Richter +1 more
TL;DR: Calcium transport in roots of maize and bean plants was studied to find out why penetration of roots through soil layers low in available Ca is difficult or restricted and why growing root tips must be permanently supplied with Ca directly from the external solution.
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