scholarly journals An Integrative Systems Perspective on Plant Phosphate Research

Genes ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 139 ◽  
Author(s):  
Ishan Ajmera ◽  
T. Charlie Hodgman ◽  
Chungui Lu
Keyword(s):  
Agricultural Practices ◽  
Large Set ◽  
P Availability ◽  
Phosphorus Use Efficiency ◽  
Global Food Security ◽  
Systems Perspective ◽  
Plant Soil ◽  
Use Efficiency ◽  
Global Food ◽  
Chemistry Plant

The case for improving crop phosphorus-use-efficiency is widely recognized. Although much is known about the molecular and regulatory mechanisms, improvements have been hampered by the extreme complexity of phosphorus (P) dynamics, which involves soil chemistry; plant-soil interactions; uptake, transport, utilization and remobilization within plants; and agricultural practices. The urgency and direction of phosphate research is also dependent upon the finite sources of P, availability of stocks to farmers and reducing environmental hazards. This work introduces integrative systems approaches as a way to represent and understand this complexity, so that meaningful links can be established between genotype, environment, crop traits and yield. It aims to provide a large set of pointers to potential genes and research practice, with a view to encouraging members of the plant-phosphate research community to adopt such approaches so that, together, we can aid efforts in global food security.

scholarly journals Evaluation of common bean genotypes for phosphorus use efficiency in Eutrophic Oxisol

Bragantia ◽  
2016 ◽  
Vol 75 (2) ◽  
pp. 152-163 ◽  
Author(s):  
Daiana Alves da Silva ◽  
Jose Antonio de Fatima Esteves ◽  
João Guilherme Ribeiro Gonçalves ◽  
Cleber Vinícius Giaretta Azevedo ◽  
Tamires Ribeiro ◽  
...  
Keyword(s):  
Common Bean ◽  
Nutrient Deficiency ◽  
P Availability ◽  
Phosphorus Use Efficiency ◽  
P Deficiency ◽  
Randomized Design ◽  
Low Phosphorus ◽  
Use Efficiency ◽  
P Application ◽  
And Control

ABSTRACT Common bean is one of the most important legumes in Latin America, mostly grown in soils with low phosphorus (P) availability. Thus, this study aimed to evaluate the responses of 20 bean genotypes to P deficiency. The experiment was a completely randomized design in a 2 × 20 factorial arrangement; the first factor consisted of P levels and the second factor, of 20 bean genotypes, with six replications. The substrate was a Red Eutrophic Oxisol with low P content. For application of the P treatments, it was applied simple superphosphate, consisting of two levels: restrictive and control, with the application of 45 and 90 kg∙ha–1 of P2O5, respectively. At 28 days, we observed the first symptoms of nutrient deficiency, with the decrease in the relative chlorophyll index in the restrictive level treatment. In addition, the treatments were effective in differentiating effects of both factors levels of P and genotypes for most traits evaluated relative to shoot, root and grain yield. It was possible to classify the genotypes in relation to use efficiency and responsiveness to P application, according to their average yield performances. Seven genotypes presented better performances for both P levels, being classified as Efficient and Responsive: G 2333, IAC Carioca Tybatã, IAPAR 81, IAC Imperador, IAC Formoso, BRS Esplendor and IPR Tangará; the first four genotypes were also classified as Efficient and Responsive under hydroponic conditions.

scholarly journals Genetic Variation in Root Architectural Traits in Lactuca and Their Roles in Increasing Phosphorus-Use-Efficiency in Response to Low Phosphorus Availability

2021 ◽  
Vol 12 ◽  
Author(s):  
Amira Beroueg ◽  
François Lecompte ◽  
Alain Mollier ◽  
Loïc Pagès
Keyword(s):  
Genetic Variation ◽  
Root Biomass ◽  
Lateral Roots ◽  
Root Traits ◽  
Relative Increase ◽  
P Availability ◽  
Phosphorus Use Efficiency ◽  
Low Phosphorus ◽  
Use Efficiency ◽  
Architectural Traits

Low phosphorus (P) bioavailability in the soil and concerns over global P reserves have emphasized the need to cultivate plants that acquire and use P efficiently. Root architecture adaptation to low P can be variable depending on species or even genotypes. To assess the genetic variability of root architectural traits and their responses to low P in the Lactuca genus, we examined fourteen genotypes including wild species, ancient and commercial lettuce cultivars at low (LP, 0.1 mmol. L–1) and high P (HP, 1 mmol. L–1). Plants were grown in cylindrical pots adapted for the excavation and observation of root systems, with an inert substrate. We identified substantial genetic variation in all the investigated root traits, as well as an effect of P availability on these traits, except on the diameter of thinner roots. At low P, the main responses were a decrease in taproot diameter, an increase in taproot dominance over its laterals and an increase in the inter-branch distance. Although the genotype x P treatment effect was limited to root depth, we identified a tradeoff between the capacity to maintain a thick taproot at low P and the dominance of the taproot over its laterals. Regardless of the P level, the phosphorus-use-efficiency (PUE) varied among lettuce genotypes and was significantly correlated with total root biomass regardless of the P level. As taproot depth and maximum apical diameter were the principal determinants of total root biomass, the relative increase in PUE at low P was observed in genotypes that showed the thickest apical diameters and/or those whose maximal apical diameter was not severely decreased at low P availability. This pre-eminence of the taproot in the adaptation of Lactuca genotypes to low P contrasts with other species which rely more on lateral roots to adapt to P stress.

scholarly journals Prospects of Genetics and Breeding for Low Phosphate Tolerance: an Integrated Approach from Soil to Cell

2021 ◽  
Author(s):  
Jonathan Odilón Ojeda-Rivera ◽  
Gerardo Alejo-Jacuinde ◽  
Héctor-Rogelio Nájera-González ◽  
Damar López-Arredondo
Keyword(s):  
Food Security ◽  
Production Systems ◽  
Integrated Approach ◽  
Adaptive Responses ◽  
Global Food Security ◽  
Effective Strategies ◽  
Key Factor ◽  
Genetic Mechanisms ◽  
Use Efficiency ◽  
Global Food

Abstract Due to the importance of Phosphorus (P) on plant development and reproduction, global P security has emerged as a key factor towards global food security. Together with multiple agrochemicals, P-based fertilizers have become the pillars that sustain our food production systems. Therefore, improving the genetics and biology of key crops such as maize, rice, wheat and soybean to develop varieties better adapted to thrive under environments that present low phosphate (Pi) availability and that possess higher Pi-fertilizer use efficiency is imperative. In this review, we summarize the current understanding of Pi nutrition in plants, with particular focus on crops, and provide new perspectives on how to harness the ample repertoire of genetic mechanisms behind plant low-Pi adaptive responses that can be utilized to design smart low-Pi tolerant plants. We discuss on the potential of implementing more integrative, versatile and effective strategies by incorporating genome editing and synthetic biology approaches to reduce Pi-fertilizer input and enable global food security in a more sustainable way.

scholarly journals Root-Associated Microbiome of Maize Genotypes with Contrasting Phosphorus Use Efficiency

2018 ◽  
Vol 2 (3) ◽  
pp. 129-137 ◽  
Author(s):  
Eliane A. Gomes ◽  
Ubiraci G. P. Lana ◽  
John F. Quensen ◽  
Sylvia M. de Sousa ◽  
Christiane A. Oliveira ◽  
...  
Keyword(s):  
Mycorrhizal Fungi ◽  
Aluminum Toxicity ◽  
Diversity Indices ◽  
Limiting Factors ◽  
P Availability ◽  
Phosphorus Use Efficiency ◽  
Host Genotype ◽  
Soil P ◽  
Maize Genotypes ◽  
Use Efficiency

Marginal soil fertility, soil acidity, aluminum toxicity, and a generalized low level of available nutrients, especially phosphorus (P), are major limiting factors to maize production in highly weathered oxisols that are prominent in the tropics. Plants have evolved several strategies to improve P acquisition, including the ability to associate with soil microorganisms that potentially enhance P uptake and plant nutrition. We investigated the effect of two maize genotypes with contrasting P use efficiency and their hybrid, grown in soils with two P levels, on bacterial and fungal community structures in the root and the rhizosphere. We found that a significant fraction of bacterial and fungal diversity could be attributed to the host genotype, but in general, the soil P level was the major driver of microbiome structure followed by plant compartment (rhizosphere versus directly root associated). Slow-growing bacterial taxa increased in the low P soil, whereas fast-growing taxa were enriched in high P soil. The low P soil had a positive effect on arbuscular mycorrhizal fungi abundance, as expected, particularly inside the root. On the other hand, our results did not support selection for microbes associated to plant growth promoting and P solubilization based on P availability. Taken together, our results expand knowledge of which microbial groups are favored in P-deficient oxisol and suggest that P fertilization significantly impacts the species composition and diversity indices of bacteria and fungi communities, both inside the roots and in the rhizosphere.

scholarly journals Designing Rice for the 22nd Century: Towards a Rice with an Enhanced Productivity and Efficient Photosynthetic Pathway

2020 ◽  
Vol 8 (12) ◽  
pp. 2623-2634
Author(s):  
Rabin Thapa ◽  
Nabin Bhusal
Keyword(s):  
Food Security ◽  
Photosynthetic Capacity ◽  
Oryza Sativa L ◽  
Nutrient Use Efficiency ◽  
Large Population ◽  
World Population ◽  
Global Food Security ◽  
The World ◽  
Use Efficiency ◽  
Global Food

Rice (Oryza sativa L.) has been cultivated as an important cereal crop for more than 9,000 years and more than half of the world’s population depend on rice as it is their primary source of energy. Almost 30% of the current world cereal production is represented by the rice alone. It is estimated that the world’s population will reach 9.1 billion by 2050 i.e. 34 percent higher than today and for ensuring an ample amount of food and nutrition to such large population, global consumption of cereals will need to increase from 2.6 to 2.9 billion tonnes by 2027. On the other hand, the impacts of climate change in agriculture are expected to be negative, threatening the global food security. Besides, agriculture and global food security will be severely affected due to the COVID-19 pandemics as its after-effects are yet to be ascertained. The world needs an introduction of a new “Green revolution” in agriculture to increase crop production for food security and biofuel, because conventional breeding method have not brought much of gains not keeping its pace with the world population growth. Hence, the current study was done to review the various ongoing approaches and possible ways of designing a rice with enhanced productivity and photosynthetic capacity. One of the ways to increase yields, photosynthetic capacity accompanied by an increased Water Use Efficiency (WUE) and Nutrient Use Efficiency could be to introduce C4 traits into rice. Besides, genetic engineering using CRISPR-Cas9, molecular breeding, developing ideotype, heterosis breeding, developing apomictic rice, nitrogen fixing rice, use of nanotechnology as well as precision farming are the probable future approaches for designing a rice with high productivity. However, there are challenges and limitations in developing such rice and further research in this matter could help us get closer to developing the future rice.

scholarly journals A Web-resource for Nutrient Use Efficiency related Genes, QTLs, and microRNA in important cereals and model plants

2017 ◽  
Author(s):  
Anuj Kumar ◽  
Ajay Pandeya ◽  
Girik Malik ◽  
Kumari P Hima ◽  
Kumar S Anil ◽  
...  
Keyword(s):  
Brachypodium Distachyon ◽  
Nutrient Use Efficiency ◽  
Aegilops Tauschii ◽  
Genomic Databases ◽  
Global Food Security ◽  
Web Resource ◽  
Nutrient Use ◽  
Use Efficiency ◽  
Available Information ◽  
Global Food

ABSTRACTCereals are the key contributors to global food security. Genes involved in uptake (transport), assimilation and utilization of macro- and micro-nutrients are responsible for their content in grain and straw. Although many cereal genomic databases are available, currently there is no cohesive web-resource of manually curated nutrient use efficiency (NtUE) related genes and QTLs, etc. In this study, we present a web-resource containing information on NtUE related genes/QTLs and the corresponding available microRNAs for some of these genes in four major cereal crops [wheat (Triticum aestivum), rice (Oryza sativa), maize (Zea mays), barley (Hordeum vulgare)], two alien species (Triticum urartu and Aegilops tauschii) related to wheat, and two model species including Brachypodium distachyon and Arabidopsis thaliana. Gene annotations integrated in the current web-resource were collected from the existing databases and the available literature. The primary goal of developing this web-resource is to provide descriptions of the NtUE related genes and their functional annotation. MicroRNA targeting some of the NtUE related genes and the quantitative trait loci (QTLs) for NtUE related traits are also included. The available information in the web-resource should help the users to readily search the desired information.Web-resource URLhttp://bioclues.org/NtUE/

scholarly journals Genetic control of traits related to phosphorus use efficiency in tropical maize

2015 ◽  
Vol 15 (2) ◽  
pp. 59-65 ◽  
Author(s):  
Flávia Ferreira Mendes ◽  
Lauro José Moreira Guimarães ◽  
Cláudia Teixeira Guimarães ◽  
João Cândido Souza ◽  
Paulo Evaristo Oliveira Guimarães ◽  
...  
Keyword(s):  
Genetic Control ◽  
Agronomic Traits ◽  
P Availability ◽  
Phosphorus Use Efficiency ◽  
P Efficiency ◽  
Breeding Programs ◽  
P Use Efficiency ◽  
Selection Strategies ◽  
Low Phosphorus ◽  
Use Efficiency

Knowing the inheritance of traits is essential to establish selection strategies in breeding programs. The aim of this study was to determine the genetic control of traits related to the phosphorus use efficiency in maize. A total of 280 progenies were developed according to design III, which were evaluated in the field under high and low phosphorus (P) availability. The genetic variance components were estimated for the agronomic traits and indices that define P use efficiency. The results indicated that the additive and dominance effects were important in explaining the genetic variability for the flowering time, grain yield and P efficiency indices. However, dominance effects prevailed, indicating that breeding efforts should be made to develop hybrids exploiting the heterosis for traits related to P use efficiency.

scholarly journals Comparing the phosphorus use efficiency of pre-treated (organically) rock phosphate with soluble P fertilizers in maize under calcareous soils

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11452
Author(s):  
Maria Mussarat ◽  
Hazrat Ali ◽  
Dost Muhammad ◽  
Ishaq Ahmad Mian ◽  
Shadman Khan ◽  
...  
Keyword(s):  
Rock Phosphate ◽  
Calcareous Soils ◽  
Organic Amendments ◽  
Ammonium Phosphate ◽  
P Availability ◽  
Phosphorus Use Efficiency ◽  
Maize Crop ◽  
Use Efficiency ◽  
Phosphorus Application ◽  
P Sources

In calcareous soils, phosphorus (P) availability to plant is impaired due to the formation of insoluble complexes with calcium and magnesium. Therefore, this study was executed to compare the P use efficiency (PUE) of four different P sources [rock phosphate (RP), acidulated rock phosphate (ARP), single super phosphate (SSP) and di ammonium phosphate (DAP)] alone or pre-treated with organic amendments (farm yard manure (FYM) enriched compost, simple compost and humic acid (HA)) along with control in maize crop under calcareous soils. All treatments irrespective of P sources received 90 kg P2O5 ha−1. Phosphorus application regardless of its sources and combination with organic amendments significantly improved maize growth, yield as well as P uptake and PUE. Rock phosphate when applied alone was recorded inferior but its performance significantly improved with compost or its pre-addition with FYM and HA, that further enhanced upon acidulation. Maize grain yield increased by 21, 22.2, 67.9 and 94% with RP, ARP, ARP enriched compost and ARP+ compost respectively, over control. Similarly, PUE of DAP improved from 31.7 to 43.1 and 39 with sample and enriched compost correspondingly. Post-harvest soil and grain P were at par for SSP, ARP and DAP alone or in conjugation with organic amendments when averaged across the amendments. These results suggested that pretreatment of P sources with organic amendments is an economical and more feasible approach to improve maize yield and PUE. Moreover, on-farm acidulation of RP may give at par results with SSP and DAP with cheaper rate and hence recommended for P management in maize in alkaline calcareous soils.

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