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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GARP transcription factors repress Arabidopsis nitrogen starvation response via ROS-dependent and -independent pathways.
Alaeddine Safi,Alaeddine Safi,Anna Medici,Wojciech Szponarski,Florence Martin,Anne Clément-Vidal,Amy Marshall-Colon,Sandrine Ruffel,Frédéric Gaymard,Hatem Rouached,Hatem Rouached,Julie Leclercq,Gloria M. Coruzzi,Benoît Lacombe,Gabriel Krouk +14 more
TL;DR: In this paper, a combination of functional genomics via transcription factor perturbation and molecular physiology studies is used to define the relationships of two types of molecular players controlling the nitrogen starvation response (NSR), namely reactive oxygen species (ROS) and the HHO transcription factors.
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Intercropping effects on root distribution of eight novel winter faba bean genotypes mixed with winter wheat
TL;DR: The alteration of the vertical root distribution of both species in intercrops, compared to the sole crops, could lead to a better resource utilization and an intercrop advantage.
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Expression dynamics indicate the role of Jasmonic acid biosynthesis pathway in regulating macronutrient (N, P and K+) deficiency tolerance in rice (Oryza sativa L.)
Deepika,Amarjeet Singh +1 more
TL;DR: In this article, the role of Jasmonic acid (JA) in macronutrient deficiency in rice was analyzed under N, P and K+ deficiencies, and the expression pattern of different families of JA biosynthesis genes (PLA1, LOX, AOS, AOC, OPR, ACX and JAR1) showed differential expression exclusively in one nutrient deficiency or in multiple nutrient deficiencies.
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Phosphorus uptake from struvite is modulated by the nitrogen form applied
Ana A. Robles-Aguilar,Silvia D. Schrey,Johannes A. Postma,Vicky M. Temperton,Nicolai David Jablonowski +4 more
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Transcriptome Changes Induced by Different Potassium Levels in Banana Roots.
Yingdui He,Ruimei Li,Fei Lin,Ying Xiong,Ying Xiong,Wang Lixia,Wang Bizun,Jianchun Guo,Jianchun Guo,Jianchun Guo,Chengxiao Hu +10 more
TL;DR: The results provide a comprehensive and systematic analysis of the gene regulation network in banana roots under different potassium stress and indicate that K2 (3 mmol/L K2SO4) treatment was a relatively normal potassium concentration for the growth of banana root, and too high or too low potassium concentration was not conducive to the growth.
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