Root proliferation in response to P stress and space: implications for the study of root acclimation to low P supply and P acquisition efficiency

McLachlan, Jonathan W.; Haling, Rebecca E.; Simpson, Richard J.; Flavel, Richard J.; Guppy, Christopher N.

doi:10.1007/s11104-020-04535-y

Cited by 9 publications

(8 citation statements)

References 55 publications

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“…Biomass response curves to density under low and high resource availability: (a) Low and high light levels (data for Lamium maculatum from Barišić et al, 2006); (b) low and high nitrogen (data for Plantago lanceolata from Berendse & Möller, 2009); (c) low and high phosphorus (data for Trifolium subterraneum from McLachlan, Haling, Simpson, Flavel, & Guppy, 2020) [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Are Plants At High Densities Restricted More By Light or By mentioning

confidence: 99%

Dividing the pie: A quantitative review on plant density responses

Postma

Hecht

Hikosaka

et al. 2020

Plant Cell & Environment

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Plant population density is an important variable in agronomy and forestry and offers an experimental way to better understand plant-plant competition. We made a meta-analysis of responses of even-aged mono-specific stands to population density by quantifying for 3 stand and 33 individual plant variables in 334 experiments how much both plant biomass and phenotypic traits change with a doubling in density. Increasing density increases standing crop per area, but decreases the mean size of its individuals, mostly through reduced tillering and branching. Among the phenotypic traits, stem diameter is negatively affected, but plant height remains remarkably similar, partly due to an increased stem length-tomass ratio and partly by increased allocation to stems. The reduction in biomass is caused by a lower photosynthetic rate, mainly due to shading of part of the foliage. Total seed mass per plant is also strongly reduced, marginally by lower mass per seed, but mainly because of lower seed numbers. Plants generally have fewer shoot-born roots, but their overall rooting depth seems hardly affected. The phenotypic plasticity responses to high densities correlate strongly with those to low light, and less with those to low nutrients, suggesting that at high density, shading affects plants more than nutrient depletion.

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Section: Are Plants At High Densities Restricted More By Light or By mentioning

confidence: 99%

Dividing the pie: A quantitative review on plant density responses

Postma

Hecht

Hikosaka

et al. 2020

Plant Cell & Environment

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“…In addition, a crop’s reliance on acquisition efficiency and internal P-utilization efficiency is thought to be mostly under genotypic control, and differs among crop species and genotypes within the same species 16 . Variation in P acquisition among genotypes was strongly correlated with root length 17 . Consequently, root growth, leading to increased root-soil contact, is an important factor determining the uptake of less mobile nutrients, such as phosphorus, in soils 18 .…”

Section: Introductionmentioning

confidence: 95%

Variation in the dynamic of absorption and efficiency of phosphorus use in tomato

Marques

Siqueira

Abedi

et al. 2022

Sci Rep

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Changes in root growth and metabolism of P in tomato cultivars are necessary in acidic soils in tropical and subtropical regions in response to P deficiency. This increase in the efficiency of phosphorus absorption by tomatoes can significantly reduce the doses of phosphate fertilizers used, as well as, possibly, the more immediate use of P fixed in the soil matrix, with favorable effects on agricultural sustainability, promoting the use of marginal areas in terms of soil fertility, and the national fertilizer economy. The tested hypothesis was that there would be no difference in the uptake and utilization of P by tomato cultivars; therefore, this study investigated the variation in the dynamics of absorption and efficiency of P-use through changes in the root, stem, leaf, gas exchange, and P-use efficiency in tomato cultivars contrasting P-absorption. The experimental design comprised a factorial scheme consisting of two cultivars that were tolerant and sensitive to P deficiency and three P concentrations (control, moderate deficiency, and severe deficiency). P limitation in the tolerant cultivar promoted high dry matter concentration (root, stem, and leaf), leaf area, root volume, nutrient translocation, rate of leaf gas exchange, and efficiency under P-deficiency stress. It was concluded from the research that the variation in the dynamics of absorption and efficiency of P use of the tolerant cultivar increased the production of roots, leaves, and leaf gas exchange under P stress conditions.

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“…For example, Chen et al found that the richness of the bacterial community was reduced under both low-and highnitrogen fertilizers compared to the control treatment, and increased in high-N fertilizers plus P or K treatments [33]. Under laboratory conditions, both stimulating and reducing effects of P and K deficiencies on root traits have been reported [34][35][36]. Therefore, the components of compound fertilizers play a key role in plant growth.…”

Section: Discussionmentioning

confidence: 99%

The Effects of Fertilizers on Rabbiteye Blueberry (Vaccinium ashei Reade.) Root Distribution and Fruit Yield

Guo¹,

Liu²,

Shakeel³

et al. 2022

Phyton

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The root system plays an important role in the growth and development of blueberry. The aim of this study was to assess the impacts of different fertilizers on the root growth and root-yield relationship of blueberry to provide insight into the regulation of root growth and fruit yield by fertilizing from the perspective of the root system. Rabbiteye blueberry variety 'Britewell' as the test material, and six fertilizers, including BF, OR, CF, SF, HF, and RT were used in single-factor fertilization experiments to analyze the effects of different fertilizer treatments on the root morphology, root distribution, and fruit yield of blueberry. Fertilization overall increased the root length density and root surface area in most soil layers, and the RT treatment significantly increased the total root length density and total root surface area 98.6% and 98.5%, respectively, compared with a control lacking fertilizer. In addition, the effect of fertilization on the blueberry root system was mainly observed in the 0-20 cm layer. Fruit yield was positively correlated with total root length density and total root surface area, and negatively correlated with average root diameter. In summary, the SF and RT treatments increased the morphological indexes of the root system, particularly in the shallow soil layers, leading to an increase in blueberry fruit yield.

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Root proliferation in response to P stress and space: implications for the study of root acclimation to low P supply and P acquisition efficiency

Cited by 9 publications

References 55 publications

Dividing the pie: A quantitative review on plant density responses

Dividing the pie: A quantitative review on plant density responses

Variation in the dynamic of absorption and efficiency of phosphorus use in tomato

The Effects of Fertilizers on Rabbiteye Blueberry (Vaccinium ashei Reade.) Root Distribution and Fruit Yield

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