scholarly journals The effects of soil phosphorus content on plant microbiota are driven by the plant phosphate starvation response

PLoS Biology ◽  
2019 ◽  
Vol 17 (11) ◽  
pp. e3000534 ◽  
Author(s):  
Omri M. Finkel ◽  
Isai Salas-González ◽  
Gabriel Castrillo ◽  
Stijn Spaepen ◽  
Theresa F. Law ◽  
...  
Keyword(s):  
Phosphorus Content ◽  
Soil Phosphorus ◽  
Phosphate Starvation ◽  
Starvation Response ◽  
Phosphate Starvation Response ◽  
Plant Microbiota

scholarly journals The effects of soil phosphorous content on microbiota are driven by the plant phosphate starvation response

2019 ◽  
Author(s):  
Omri M. Finkel ◽  
Isai Salas-González ◽  
Gabriel Castrillo ◽  
Stijn Spaepen ◽  
Theresa F. Law ◽  
...  
Keyword(s):  
Indirect Effects ◽  
Plant Immunity ◽  
Phosphate Starvation ◽  
Drop Out ◽  
Microbiota Composition ◽  
Positive Interaction ◽  
Starvation Response ◽  
Soil P ◽  
Phosphate Starvation Response ◽  
Plant Microbiota

AbstractPhosphate starvation response (PSR) in non-mycorrhizal plants comprises transcriptional reprogramming resulting in severe physiological changes to the roots and shoots and repression of plant immunity. Thus, plant-colonizing microorganisms – the plant microbiota – are exposed to direct influence by the soil’s phosphorous (P) content itself, as well as to the indirect effects of soil P on the microbial niches shaped by the plant. The individual contribution of these factors to plant microbiota assembly remains unknown. To disentangle these direct and indirect effects, we planted PSR-deficient Arabidopsis mutants in a long-term managed soil P gradient, and compared the composition of their shoot and root microbiota to wild type plants across different P concentrations. PSR-deficiency had a larger effect on the composition of both bacterial and fungal plant-associated microbiota composition than P concentrations in both roots and shoots. The fungal microbiota was more sensitive to P concentrationsper sethan bacteria, and less depended on the soil community composition.Using a 185-member bacterial synthetic community (SynCom) across a wide P concentration gradient in an agar matrix, we demonstrated a shift in the effect of bacteria on the plant from a neutral or positive interaction to a negative one, as measured by rosette size. This phenotypic shift is accompanied by changes in microbiota composition: the genusBurkholderiais specifically enriched in plant tissue under P starvation. Through a community drop-out experiment, we demonstrate that in the absence ofBurkholderiafrom the SynCom, plant shoots accumulate higher phosphate levels than shoots colonized with the full SynCom, only under P starvation, but not under P-replete conditions. Therefore, P-stressed plants allow colonization by latent opportunistic competitors found within their microbiome, thus exacerbating the plant’s P starvation.

scholarly journals Phosphate starvation response controls genes required to synthesize the phosphate analog arsenate

2018 ◽  
Vol 20 (5) ◽  
pp. 1782-1793 ◽  
Author(s):  
Qian Wang ◽  
Yoon-Suk Kang ◽  
Abdullah Alowaifeer ◽  
Kaixiang Shi ◽  
Xia Fan ◽  
...  
Keyword(s):  
Phosphate Starvation ◽  
Starvation Response ◽  
Phosphate Starvation Response

The phosphate-starvation response inVibrio cholerae O1 andphoB mutant under proteomic analysis: Disclosing functions involved in adaptation, survival and virulence

PROTEOMICS ◽  
2006 ◽  
Vol 6 (5) ◽  
pp. 1495-1511 ◽  
Author(s):  
Wanda Maria Almeida von Krüger ◽  
Leticia Miranda Santos Lery ◽  
Marcia Regina Soares ◽  
Fernanda Saloum de Neves-Manta ◽  
Celia Maria Batista e Silva ◽  
...  
Keyword(s):  
Proteomic Analysis ◽  
Phosphate Starvation ◽  
Starvation Response ◽  
Phosphate Starvation Response

The phosphate-starvation response ofBacillus licheniformis

PROTEOMICS ◽  
2006 ◽  
Vol 6 (12) ◽  
pp. 3582-3601 ◽  
Author(s):  
Le Thi Hoi ◽  
Birgit Voigt ◽  
Britta Jürgen ◽  
Armin Ehrenreich ◽  
Gerhard Gottschalk ◽  
...  
Keyword(s):  
Phosphate Starvation ◽  
Starvation Response ◽  
Phosphate Starvation Response

scholarly journals The phosphate starvation response recruits the TOR pathway to regulate growth in Arabidopsis cell cultures

2021 ◽  
Author(s):  
Thomas Dobrenel ◽  
Sunita Kushwah ◽  
Umarah Mubeen ◽  
Wouter Jansen ◽  
Nicolas Delhomme ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Phosphate Starvation ◽  
Phosphorus Availability ◽  
Marker Genes ◽  
Primary Metabolism ◽  
Starvation Response ◽  
Tor Pathway ◽  
Phosphate Starvation Response ◽  
Intracellular Content ◽  
Phosphorus Status

In eukaryotes, TOR (Target Of Rapamycin) is a conserved regulator of growth that integrates both endogenous and exogenous signals. These signals include the internal nutritional status, and in plants, TOR has been shown to be regulated by carbon, nitrogen and sulfur availability. In this study, we show that in Arabidopsis the TOR pathway also integrates phosphorus availability to actively modulate the cell cycle, which in turn regulates the intracellular content of amino acids and organic acids. We observed a substantial overlap between the phenotypic, metabolic and transcriptomic responses of TOR inactivation and phosphorus starvation in Arabidopsis cell culture. Although phosphorus availability modulates TOR activity, changes in the levels of TOR activity do not alter the expression of marker genes for phosphorus status. These data prompted us to place the sensing of phosphorus availability upstream of the modulation of TOR activity which, in turn, regulates the cell cycle and primary metabolism to adjust plant growth in plants.

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