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Rasheed N, Maqsood MA, Aziz T, Ashraf MI, Saleem I, Ehsan S, Nawaz A, Bilal HM, Xu M. Zinc portioning and allocation patterns among various tissues confers variations in Zn use efficiency and bioavailability in lentil genotypes. FRONTIERS IN PLANT SCIENCE 2024; 14:1325370. [PMID: 38348163 PMCID: PMC10859460 DOI: 10.3389/fpls.2023.1325370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 12/21/2023] [Indexed: 02/15/2024]
Abstract
Zinc (Zn) is essential for plants and animals as it plays significant roles in several physiological and biological processes. Its deficiency in soil results in low Zn content food and is one of the major reasons for Zn malnutrition in humans. Biofortification of crops with zinc (Zn) is a viable approach to combat malnutrition, especially in developing countries. A hydroponic study was executed to study response and Zn partitioning in various lentil genotypes. Eight preselected lentil genotypes (Line-11504, Mansehra-89, Masoor-2006, Masoor-85, Line-10502, Markaz-09, Masoor-2004, and Shiraz-96) were grown in solution culture with two Zn levels (control and adequate Zn). Plants were sown in polythene lined iron trays with a two inch layer of prewashed riverbed sand. After 10 days of germination, seedlings were transplanted to a 25L capacity container with nutrient solution for 15 days, and afterward, these plants were divided into two groups, receiving either 2.0 mM Zn or no Zn levels. Three plants of each genotype were harvested at the vegetative growth stage (60 DAT) and the remaining three at physiological maturity (117 DAT). Plants were partitioned into roots, shoots, and grains at harvest. Significant variations in root and shoot dry matter production, grain output, partitioning of Zn in plant parts (root, shoot, and grain), grain phytate reduction, and Zn bioavailability were observed among genotypes. Lentil root accumulated more Zn (54 mg kg-1) with respect to shoot Zn (51 mg kg-1) under Zn supply. The Zn efficient genotypes (Line-11504 and Mansehra-89) produced more root and shoot dry weights at both harvests. There was a positive correlation between the relative growth rate of root and grain phytate concentration (r = 0.55) and [phytate]:[Zn] ratio (r = 0.67). Zn-efficient genotype Mansehra-89 had a maximum root shoot ratio (0.57) and higher grain Zn (60 mg kg-1) with a respectively reduced grain phytate (17 µg g-1) and thus, had more Zn bioavailability (3.01 mg d-1). The genotypic ability for Zn uptake and accumulation within different plant tissues may be incorporated into future crop breeding to improve the nutrition of undernourished consumers.
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Affiliation(s)
- Naser Rasheed
- Department of Soil Science, University of Agriculture, Faisalabad-Sub Campus Depalpur, Okara, Pakistan
| | - Muhammad Aamer Maqsood
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Faisalabad, Pakistan
| | - Tariq Aziz
- Department of Soil Science, University of Agriculture, Faisalabad-Sub Campus Depalpur, Okara, Pakistan
| | - Muhammad Imran Ashraf
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Faisalabad, Pakistan
| | - Ifra Saleem
- Soil Chemistry Section, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Shabana Ehsan
- Soil Bacteriology Section, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Allah Nawaz
- Soil Chemistry Section, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Hafiz Muhammad Bilal
- Water Management Research Farm (WMRF), Renala Khurd, Agriculture Department, On Farm Water Management, Punjab, Lahore, Pakistan
| | - Minggang Xu
- Shanxi Key Laboratory of Soil Environment and Nutrient Resources, Shanxi Institute of Ecological and Environmental Technology, Shanxi Agricultural University, Taiyuan, China
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Zheng Q, Hu J, Tan Q, Hu H, Sun C, Lei K, Tian Z, Dai T. Improved chloroplast Pi allocation helps sustain electron transfer to enhance photosynthetic low-phosphorus tolerance of wheat. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107880. [PMID: 37437346 DOI: 10.1016/j.plaphy.2023.107880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/24/2023] [Accepted: 07/05/2023] [Indexed: 07/14/2023]
Abstract
Phosphorus (P) deficit limits high wheat (Triticum aestivum L.) yields. Breeding low-P-tolerant cultivars is vital for sustainable agriculture and food security, but the low-P adaptation mechanisms are largely not understood. Two wheat cultivars, ND2419 (low-P-tolerant) and ZM366 (low-P-sensitive) were used in this study. They were grown under hydroponic conditions with low-P (0.015 mM) or normal-P (1 mM). Low-P suppressed biomass accumulation and net photosynthetic rate (A) in both cultivars, whereas ND2419 was relatively less suppressed. Intercellular CO2 concentration did not decrease with the decline of stomatal conductance. Additionally, maximum electron transfer rate (Jmax) decreased sooner than maximum carboxylation rate (Vcmax). Results indicate that impeded electron transfer is directly responsible for decreased A. Under low-P, ND2419 exhibited greater PSII functionality (potential activity (Fv/Fo), maximum quantum efficiency (Fv/Fm), photochemical quenching (qL) and non-photochemical quenching (NPQ) required for electron transfer than ZM366, resulting more ATP for Rubisco activation. Furthermore, ND2419 maintained higher chloroplast Pi concentrations by enhancing chloroplast Pi allocation, compared with ZM366. Overall, the low-P-tolerant cultivar sustained electron transfer under low-P by enhancing chloroplast Pi allocation, allowing more ATP synthesis for Rubisco activation, ultimately presenting stronger photosynthesis capacities. The improved chloroplasts Pi allocation may provide new insights into improve low-P tolerance.
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Affiliation(s)
- Qiaomei Zheng
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China.
| | - Jinling Hu
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China.
| | - Qingwen Tan
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China.
| | - Hang Hu
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China.
| | - Chuanjiao Sun
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China.
| | - Kangqi Lei
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China.
| | - Zhongwei Tian
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China.
| | - Tingbo Dai
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China.
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Orr DJ, Robijns AKJ, Baker CR, Niyogi KK, Carmo-Silva E. Dynamics of Rubisco regulation by sugar phosphate derivatives and their phosphatases. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:581-590. [PMID: 36173669 PMCID: PMC9833046 DOI: 10.1093/jxb/erac386] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/28/2022] [Indexed: 05/31/2023]
Abstract
Regulating the central CO2-fixing enzyme Rubisco is as complex as its ancient reaction mechanism and involves interaction with a series of cofactors and auxiliary proteins that activate catalytic sites and maintain activity. A key component among the regulatory mechanisms is the binding of sugar phosphate derivatives that inhibit activity. Removal of inhibitors via the action of Rubisco activase is required to restore catalytic competency. In addition, specific phosphatases dephosphorylate newly released inhibitors, rendering them incapable of binding to Rubisco catalytic sites. The best studied inhibitor is 2-carboxy-d-arabinitol 1-phosphate (CA1P), a naturally occurring nocturnal inhibitor that accumulates in most species during darkness and low light, progressively binding to Rubisco. As light increases, Rubisco activase removes CA1P from Rubisco, and the specific phosphatase CA1Pase dephosphorylates CA1P to CA, which cannot bind Rubisco. Misfire products of Rubisco's complex reaction chemistry can also act as inhibitors. One example is xylulose-1,5-bisphosphate (XuBP), which is dephosphorylated by XuBPase. Here we revisit key findings related to sugar phosphate derivatives and their specific phosphatases, highlighting outstanding questions and how further consideration of these inhibitors and their role is important for better understanding the regulation of carbon assimilation.
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Affiliation(s)
| | - Alice K J Robijns
- Present address: Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EA, UK
| | - Christopher R Baker
- Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Krishna K Niyogi
- Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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Soumya PR, Vengavasi K, Pandey R. Adaptive strategies of plants to conserve internal phosphorus under P deficient condition to improve P utilization efficiency. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2022; 28:1981-1993. [PMID: 36573147 PMCID: PMC9789281 DOI: 10.1007/s12298-022-01255-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
Phosphorus (P) is one of the limiting factors for plant growth and productivity due to its slow diffusion and immobilization in the soil which necessitates application of phosphatic fertilizers to meet the crop demand and obtain maximum yields. However, plants have evolved mechanisms to adapt to low P stress conditions either by increasing acquisition (alteration of belowground processes) or by internal inorganic P (Pi) utilization (cellular Pi homeostasis) or both. In this review, we have discussed the adaptive strategies that conserve the use of P and maintain cellular Pi homeostasis in the cytoplasm. These strategies involve modification in membrane lipid composition, flavanol/anthocyanin level, scavenging and reutilization of Pi adsorbed in cell wall pectin, remobilization of Pi during senescence by enzymes like RNases and purple acid phosphatases, alternative mitochondrial electron transport, and glycolytic pathways. The remobilization of Pi from senescing tissues and its internal redistribution to various cellular organelles is mediated by various Pi transporters. Although much efforts have been made to enhance P acquisition efficiency, an understanding of the physiological mechanisms conserving internal Pi and their manipulation would be useful for plants that can utilize P more efficiently to produce optimum growth per unit P uptake.
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Affiliation(s)
- Preman R. Soumya
- Mineral Nutrition Laboratory, Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012 India
- Present Address: Regional Agricultural Research Station, Kerala Agricultural University, Ambalavayal, Wayanad, Kerala 673593 India
| | - Krishnapriya Vengavasi
- Division of Crop Production, ICAR-Sugarcane Breeding Institute, Coimbatore, Tamil Nadu 641007 India
| | - Renu Pandey
- Mineral Nutrition Laboratory, Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012 India
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Kayoumu M, Li X, Iqbal A, Wang X, Gui H, Qi Q, Ruan S, Guo R, Dong Q, Zhang X, Song M. Genetic variation in morphological traits in cotton and their roles in increasing phosphorus-use-efficiency in response to low phosphorus availability. FRONTIERS IN PLANT SCIENCE 2022; 13:1051080. [PMID: 36531355 PMCID: PMC9749730 DOI: 10.3389/fpls.2022.1051080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 11/10/2022] [Indexed: 06/17/2023]
Abstract
Phosphorus (P) is an essential macronutrient required for fundamental processes in plants. Trait plasticity is crucial for plant adaptation to environmental change. Variations in traits underlie diverse phosphorus (P) acquisition strategies among plants. Nevertheless, how the intraspecific plasticity and integration of morphological traits contribute to Phosphorus-Use-Efficiency (PUE) in cotton is unknown. In this study, 25 morphological traits were evaluated in 384 cotton genotypes grown with low P (LP, 10μmol. L-1) and normal nutrition (CK, 500μmol. L-1) to assess the genetic variability of morphological traits and their relationship to phosphorus use efficiency. Results revealed a large genetic variation in mostly morphological traits under low P. Significant enhancement in root traits and phosphorus efficiency-related traits like PUE was observed at LP as compared to CK conditions. In response to low P availability, cotton genotypes showed large plasticity in shoot and total dry biomass, phosphorus, and nitrogen efficiency-related traits (i.e., phosphorus/nitrogen use efficiency, phosphorus/nitrogen uptake efficiency), and most root traits, but a limited response in root dry biomass, taproot length, root surface area, root volume, and SPAD value. In addition, significant correlations were observed between PUtE (phosphorus uptake efficiency), NUE (nitrogen use efficiency), TDB (total dry biomass), and RTD (root tissue density) with PUE under both P supply level and phosphorus stress index, which may be a key indicator for improving PUE under LP conditions. Most root traits are most affected by genotypes than nutrition level. Conserved PUE is more affected by the nutrition level than the genotype effect. Principal component analysis depicted the comprehensive indicators under two P supply conditions were mainly reflected in root-related traits and morphological indicators such as dry matter biomass. These results indicate that interspecific variations exist within these cotton genotypes and traits. Our study provides suggestions for future research to enhance the ability of the earth system model to predict how crops respond to environmental interference and provide target quality for cotton breeding in phosphorus-deficient areas.
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Affiliation(s)
- Mirezhatijiang Kayoumu
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
| | - Xiaotong Li
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
| | - Asif Iqbal
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
| | - Xiangru Wang
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
| | - Huiping Gui
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
| | - Qian Qi
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
| | - Sijia Ruan
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
| | - Ruishi Guo
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
| | - Qiang Dong
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
| | - Xiling Zhang
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
| | - Meizhen Song
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, State Key Laboratory of Cotton Biology/School of Agricultural Sciences, Zhengzhou University, Anyang, Henan, China
- Western Agricultural Research Center of Chinese Academy of Agricultural Sciences, Changji, China
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Han Y, Hong W, Xiong C, Lambers H, Sun Y, Xu Z, Schulze WX, Cheng L. Combining analyses of metabolite profiles and phosphorus fractions to explore high phosphorus utilization efficiency in maize. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:4184-4203. [PMID: 35303743 DOI: 10.1093/jxb/erac117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Phosphorus (P) limitation is a significant factor restricting crop production in agricultural systems, and enhancing the internal P utilization efficiency (PUE) of crops plays an important role in ensuring sustainable P use in agriculture. To better understand how P is remobilized to affect crop growth, we first screened P-efficient (B73 and GEMS50) and P-inefficient (Liao5114) maize genotypes at the same shoot P content, and then analyzed P pools and performed non-targeted metabolomic analyses to explore changes in cellular P fractions and metabolites in maize genotypes with contrasting PUE. We show that lipid P and nucleic acid P concentrations were significantly lower in lower leaves of P-efficient genotypes, and these P pools were remobilized to a major extent in P-efficient genotypes. Broad metabolic alterations were evident in leaves of P-efficient maize genotypes, particularly affecting products of phospholipid turnover and phosphorylated compounds, and the shikimate biosynthesis pathway. Taken together, our results suggest that P-efficient genotypes have a high capacity to remobilize lipid P and nucleic acid P and promote the shikimate pathway towards efficient P utilization in maize.
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Affiliation(s)
- Yang Han
- Department of Plant Nutrient, College of Resources and Environmental Sciences, Academy of National Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, PR China
| | - Wanting Hong
- Department of Plant Nutrient, College of Resources and Environmental Sciences, Academy of National Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, PR China
| | - Chuanyong Xiong
- Department of Plant Nutrient, College of Resources and Environmental Sciences, Academy of National Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, PR China
| | - Hans Lambers
- Department of Plant Nutrient, College of Resources and Environmental Sciences, Academy of National Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, PR China
- School of Biological Sciences and UWA Institute of Agriculture, University of Western Australia, Perth, WA 6009, Australia
| | - Yan Sun
- Department of Plant Nutrient, College of Resources and Environmental Sciences, Academy of National Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, PR China
| | - Zikai Xu
- Department of Plant Nutrient, College of Resources and Environmental Sciences, Academy of National Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, PR China
| | - Waltraud X Schulze
- Department of Plant Systems Biology, University of Hohenheim, D-70593 Stuttgart, Germany
| | - Lingyun Cheng
- Department of Plant Nutrient, College of Resources and Environmental Sciences, Academy of National Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, PR China
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The Dynamics of Phosphorus Uptake and Remobilization during the Grain Development Period in Durum Wheat Plants. PLANTS 2022; 11:plants11081006. [PMID: 35448734 PMCID: PMC9029974 DOI: 10.3390/plants11081006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/30/2022] [Accepted: 04/01/2022] [Indexed: 11/24/2022]
Abstract
Post-anthesis phosphorus (P) uptake and the remobilization of the previously acquired P are the principal sources of grain P nutrition in wheat. However, how the acquired P reaches the grains and its partitioning at the whole plant level remain poorly understood. Here, the temporal dynamics of the newly acquired P in durum wheat organs and its allocation to grain were examined using pulse-chase 32P-labeling experiments at 5 and 14 days after anthesis. Durum wheat plants were grown hydroponically under high and low P supplies. Each labeling experiment lasted for 24 h. Plants were harvested 24, 48, and 96 h after labeling. Low and high P treatments significantly affected the allocation of the newly acquired P at the whole plant level. Three days (96 h) after the first 32P-labeling, 8% and 4% of the newly acquired P from exogenous solution were allocated to grains, 73% and 55% to the remainder aboveground organs, and 19% and 41% to the roots at low and high P supplies, respectively. Three days after the second labeling, the corresponding values were 48% and 20% in grains, 44% and 53% in the remainder aboveground organs, and 8% and 27% in roots at low and high P supplies, respectively. These results reveal that the dynamics of P allocation to grain was faster in plants grown under low P supply than under high supply. However, the obtained results also indicate that the origin of P accumulated in durum wheat grains was mainly from P remobilization with little contribution from post-anthesis P uptake. The present study emphasizes the role of vegetative organs as temporary storage of P taken up during the grain filling period before its final allocation to grains.
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Nadeem M, Wu J, Ghaffari H, Kedir AJ, Saleem S, Mollier A, Singh J, Cheema M. Understanding the Adaptive Mechanisms of Plants to Enhance Phosphorus Use Efficiency on Podzolic Soils in Boreal Agroecosystems. FRONTIERS IN PLANT SCIENCE 2022; 13:804058. [PMID: 35371179 PMCID: PMC8965363 DOI: 10.3389/fpls.2022.804058] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
Being a macronutrient, phosphorus (P) is the backbone to complete the growth cycle of plants. However, because of low mobility and high fixation, P becomes the least available nutrient in podzolic soils; hence, enhancing phosphorus use efficiency (PUE) can play an important role in different cropping systems/crop production practices to meet ever-increasing demands in food, fiber, and fuel. Additionally, the rapidly decreasing mineral phosphate rocks/stocks forced to explore alternative resources and methods to enhance PUE either through improved seed P reserves and their remobilization, P acquisition efficiency (PAE), or plant's internal P utilization efficiency (IPUE) or both for sustainable P management strategies. The objective of this review article is to explore and document important domains to enhance PUE in crop plants grown on Podzol in a boreal agroecosystem. We have discussed P availabilities in podzolic soils, root architecture and morphology, root exudates, phosphate transporters and their role in P uptake, different contributors to enhance PAE and IPUE, and strategies to improve plant PUE in crops grown on podzolic soils deficient in P and acidic in nature.
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Affiliation(s)
- Muhammad Nadeem
- School of Science and the Environment, Memorial University of Newfoundland, Corner Brook, NL, Canada
| | - Jiaxu Wu
- School of Science and the Environment, Memorial University of Newfoundland, Corner Brook, NL, Canada
| | | | - Amana Jemal Kedir
- School of Science and the Environment, Memorial University of Newfoundland, Corner Brook, NL, Canada
- Environmental Science Program, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Shamila Saleem
- Department of Agriculture Extension, Government of Punjab, Khanewal, Pakistan
| | - Alain Mollier
- INRAE, UMR 1391 ISPA, Bordeaux Science Agro, Villenave d'Ornon, France
| | - Jaswinder Singh
- Department of Plant Science, McGill University, Ste-Anne-de-Bellevue, QC, Canada
| | - Mumtaz Cheema
- School of Science and the Environment, Memorial University of Newfoundland, Corner Brook, NL, Canada
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Xu H, Hassan MA, Sun D, Wu Z, Jiang G, Liu B, Ni Q, Yang W, Fang H, Li J, Chen X. Effects of Low Temperature Stress on Source-Sink Organs in Wheat and Phosphorus Mitigation Strategies. FRONTIERS IN PLANT SCIENCE 2022; 13:807844. [PMID: 35222472 PMCID: PMC8873184 DOI: 10.3389/fpls.2022.807844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
The 21st century presents many challenges to mankind, including climate change, fast growing human population, and serious concerns over food security. Wheat is a leading cereal crop that largely fulfills the global food needs. Low temperature stress accompanied by nutrient-starved soils is badly disrupting the source-sink relationship of wheat, thus causing an acute decline in final yield and deteriorating the grain quality. This review paper aimed to understand how low temperature stress affects wheat source-sink organs (i.e., leaves, roots, and spikes) and how phosphorus application reliefs in alleviating its harmful consequences. Also, we discussed mitigation strategies to enhance wheat capacity to adapt to varying temperature extremes and made rational recommendations based on modern agronomic and breeding approaches. Therefore, this study is likely to establish a solid foundation for improving the tolerance to low temperature stress and to improve its phosphorus utilization efficiency in wheat.
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Affiliation(s)
- Hui Xu
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | | | - Dongyue Sun
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Zhaochen Wu
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Gang Jiang
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Binbin Liu
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Qianqian Ni
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Wenkang Yang
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Hao Fang
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Jincai Li
- College of Agronomy, Anhui Agricultural University, Hefei, China
- Jiangsu Collaborative Innovation Centre for Modern Crop Production, Nanjing, China
| | - Xiang Chen
- College of Agronomy, Anhui Agricultural University, Hefei, China
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Ramtekey V, Bansal R, Aski MS, Kothari D, Singh A, Pandey R, Tripathi K, Mishra GP, Kumar S, Dikshit HK. Genetic Variation for Traits Related to Phosphorus Use Efficiency in Lens Species at the Seedling Stage. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10122711. [PMID: 34961182 PMCID: PMC8707046 DOI: 10.3390/plants10122711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/22/2021] [Accepted: 11/22/2021] [Indexed: 06/14/2023]
Abstract
Phosphorus (P) is an essential, non-renewable resource critical for crop productivity across the world. P is immobile in nature and, therefore, the identification of novel genotypes with efficient P uptake and utilization under a low P environment is extremely important. This study was designed to characterize eighty genotypes of different Lens species for shoot and root traits at two contrasting levels of P. A significant reduction in primary root length (PRL), total surface area (TSA), total root tips (TRT), root forks (RF), total dry weight (TDW), root dry weight (RDW) and shoot dry weight (SDW) in response to P deficiency was recorded. A principal component analysis revealed that the TDW, SDW and RDW were significantly correlated to P uptake and utilization efficiency in lentils. Based on total dry weight (TDW) under low P, L4727, EC718309, EC714238, PL-97, EC718348, DPL15, PL06 and EC718332 were found promising. The characterization of different Lens species revealed species-specific variations for the studied traits. Cultivated lentils exhibited higher P uptake and utilization efficiency as compared to the wild forms. The study, based on four different techniques, identified EC714238 as the most P use-efficient genotype. The genotypes identified in this study can be utilized for developing mapping populations and deciphering the genetics for breeding lentil varieties suited for low P environments.
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Affiliation(s)
- Vinita Ramtekey
- Division of Genetics, ICAR—Indian Agricultural Research Institute, New Delhi 110012, India; (V.R.); (M.S.A.); (D.K.)
- Department of Genetics and Plant Breeding, ICAR—Indian Institute of Seed Science, Mau 275103, India
| | - Ruchi Bansal
- Division of Germplasm Evaluation, ICAR—National Bureau of Plant Genetic Resources, New Delhi 110012, India; (R.B.); (K.T.)
| | - Muraleedhar S. Aski
- Division of Genetics, ICAR—Indian Agricultural Research Institute, New Delhi 110012, India; (V.R.); (M.S.A.); (D.K.)
| | - Deepali Kothari
- Division of Genetics, ICAR—Indian Agricultural Research Institute, New Delhi 110012, India; (V.R.); (M.S.A.); (D.K.)
| | - Akanksha Singh
- Amity Institute of Organic Agriculture, Amity University, Noida 201303, India;
| | - Renu Pandey
- Division of Plant Physiology, ICAR—Indian Agricultural Research Institute, New Delhi 110012, India;
| | - Kuldeep Tripathi
- Division of Germplasm Evaluation, ICAR—National Bureau of Plant Genetic Resources, New Delhi 110012, India; (R.B.); (K.T.)
| | - Gyan P. Mishra
- Division of Genetics, ICAR—Indian Agricultural Research Institute, New Delhi 110012, India; (V.R.); (M.S.A.); (D.K.)
| | - Shiv Kumar
- Rabat-Institutes, ICARDA, B.P. 6299, Station Experiment, INRA-Quich, Rue Hafiane Cherkaoui Agdal, Rabat 10112, Morocco
| | - Harsh Kumar Dikshit
- Division of Genetics, ICAR—Indian Agricultural Research Institute, New Delhi 110012, India; (V.R.); (M.S.A.); (D.K.)
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11
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Yi C, Wang X, Chen Q, Callahan DL, Fournier-Level A, Whelan J, Jost R. Diverse phosphate and auxin transport loci distinguish phosphate tolerant from sensitive Arabidopsis accessions. PLANT PHYSIOLOGY 2021; 187:2656-2673. [PMID: 34636851 PMCID: PMC8644285 DOI: 10.1093/plphys/kiab441] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 08/18/2021] [Indexed: 05/11/2023]
Abstract
Phosphorus (P) is an essential element for plant growth often limiting agroecosystems. To identify genetic determinants of performance under variable phosphate (Pi) supply, we conducted genome-wide association studies on five highly predictive Pi starvation response traits in 200 Arabidopsis (Arabidopsis thaliana) accessions. Pi concentration in Pi-limited organs had the strongest, and primary root length had the weakest genetic component. Of 70 trait-associated candidate genes, 17 responded to Pi withdrawal. The PHOSPHATE TRANSPORTER1 gene cluster on chromosome 5 comprises PHT1;1, PHT1;2, and PHT1;3 with known impact on P status. A second locus featured uncharacterized endomembrane-associated auxin efflux carrier encoding PIN-LIKES7 (PILS7) which was more strongly suppressed in Pi-limited roots of Pi-starvation sensitive accessions. In the Col-0 background, Pi uptake and organ growth were impaired in both Pi-limited pht1;1 and two pils7 T-DNA insertion mutants, while Pi -limited pht1;2 had higher biomass and pht1;3 was indistinguishable from wild-type. Copy number variation at the PHT1 locus with loss of the PHT1;3 gene and smaller scale deletions in PHT1;1 and PHT1;2 predicted to alter both protein structure and function suggest diversification of PHT1 is a key driver for adaptation to P limitation. Haplogroup analysis revealed a phosphorylation site in the protein encoded by the PILS7 allele from stress-sensitive accessions as well as additional auxin-responsive elements in the promoter of the "stress tolerant" allele. The former allele's inability to complement the pils7-1 mutant in the Col-0 background implies the presence of a kinase signaling loop controlling PILS7 activity in accessions from P-rich environments, while survival in P-poor environments requires fine-tuning of stress-responsive root auxin signaling.
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Affiliation(s)
- Changyu Yi
- Department of Animal, Plant and Soil Sciences and La Trobe Institute for Agriculture and Food (LIAF), ARC Centre of Excellence in Plant Energy Biology, School of Life Sciences, La Trobe University, Bundoora VIC 3086, Australia
| | - Xinchao Wang
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Zhejiang 31008, China
| | - Qian Chen
- Department of Animal, Plant and Soil Sciences and La Trobe Institute for Agriculture and Food (LIAF), ARC Centre of Excellence in Plant Energy Biology, School of Life Sciences, La Trobe University, Bundoora VIC 3086, Australia
| | - Damien L Callahan
- Centre for Chemistry and Biotechnology, School of Life and Environmental Sciences, Deakin University (Burwood Campus), Burwood VIC 3125, Australia
| | | | - James Whelan
- Department of Animal, Plant and Soil Sciences and La Trobe Institute for Agriculture and Food (LIAF), ARC Centre of Excellence in Plant Energy Biology, School of Life Sciences, La Trobe University, Bundoora VIC 3086, Australia
| | - Ricarda Jost
- Department of Animal, Plant and Soil Sciences and La Trobe Institute for Agriculture and Food (LIAF), ARC Centre of Excellence in Plant Energy Biology, School of Life Sciences, La Trobe University, Bundoora VIC 3086, Australia
- Author for communication:
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12
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Reddy VRP, Dikshit HK, Mishra GP, Aski M, Singh A, Bansal R, Pandey R, Nair RM. Comparison of different selection traits for identification of phosphorus use efficient lines in mungbean. PeerJ 2021; 9:e12156. [PMID: 34707926 PMCID: PMC8504459 DOI: 10.7717/peerj.12156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 08/24/2021] [Indexed: 11/28/2022] Open
Abstract
Phosphorus (P) is one of the major constraints for crop growth and development, owing to low availability and least mobility in many tropical soil conditions. Categorization of existing germplasm under P deficient conditions is a prerequisite for the selection and development of P efficient genotypes in the mungbean. In the present investigation, 36 diverse genotypes were categorized for phosphorus use efficiency traits using four different techniques for identification of phosphorus use efficient mungbean genotypes. The studied genotypes were categorized for P efficiency based on efficiency, responsiveness, and stress tolerance score of genotypes under normal and low P conditions. The mean values of traits, root dry mass, root to shoot ratio, and P utilization efficiency are significantly higher under low P conditions indicating the high responsiveness of traits to P deficiency. The presence of significant interaction between genotypes and P treatment indicates the evaluated genotypes were significantly affected by P treatment for studied traits. The total P uptake showed significant and positive correlations with root dry mass, shoot dry mass, total dry mass,and P concentration under both P regimes. Out of the four techniques used for the categorization of genotypes for P efficiency, three techniques revealed that the genotype PUSA 1333, followed by Pusa Vishal, PUSA 1031, and Pusa Ratna is efficient. The categorization based on stress tolerance score is the finest way to study variation and for the selection of contrasting genotypes for P efficiency. The identified P efficient genotypes would be valuable resources for genetic enhancement of P use efficiency in mungbean breeding.
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Affiliation(s)
- Venkata Ravi Prakash Reddy
- Division of Genetics, ICAR- Indian Agricultural Research Institute, New Delhi, India.,Acharya N.G. Ranga Agricultural University Regional Agricultural Research Station, Nandyal, India
| | - Harsh Kumar Dikshit
- Division of Genetics, ICAR- Indian Agricultural Research Institute, New Delhi, India
| | - Gyan Prakash Mishra
- Division of Genetics, ICAR- Indian Agricultural Research Institute, New Delhi, India
| | - Muraleedhar Aski
- Division of Genetics, ICAR- Indian Agricultural Research Institute, New Delhi, India
| | - Akanksha Singh
- Division of Genetics, ICAR- Indian Agricultural Research Institute, New Delhi, India.,Amity Institute of Organic Agriculture, Amity University, Noida, Uttar Pradesh, India
| | - Ruchi Bansal
- Division of Germplasm Evaluation, ICAR-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Renu Pandey
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, India
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Wang P, Li G, Li G, Yuan S, Wang C, Xie Y, Guo T, Kang G, Wang D. TaPHT1;9-4B and its transcriptional regulator TaMYB4-7D contribute to phosphate uptake and plant growth in bread wheat. THE NEW PHYTOLOGIST 2021; 231:1968-1983. [PMID: 34096624 PMCID: PMC8489284 DOI: 10.1111/nph.17534] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/25/2021] [Indexed: 05/19/2023]
Abstract
Efficient phosphate (Pi) uptake and utilisation are essential for promoting crop yield. However, the underlying molecular mechanism is still poorly understood in complex crop species such as hexaploid wheat. Here we report that TaPHT1;9-4B and its transcriptional regulator TaMYB4-7D function in Pi acquisition, translocation and plant growth in bread wheat. TaPHT1;9-4B, a high-affinity Pi transporter highly upregulated in roots by Pi deficiency, was identified using quantitative proteomics. Disruption of TaPHT1;9-4B function by BSMV-VIGS or CRISPR editing impaired wheat tolerance to Pi deprivation, whereas transgenic expression of TaPHT1;9-4B in rice improved Pi uptake and plant growth. Using yeast-one-hybrid assay, we isolated TaMYB4-7D, a R2R3 MYB transcription factor that could activate TaPHT1;9-4B expression by binding to its promoter. Silencing TaMYB4-7D decreased TaPHT1;9-4B expression, Pi uptake and plant growth. Four promoter haplotypes were identified for TaPHT1;9-4B, with Hap3 showing significant positive associations with TaPHT1;9-4B transcript level, growth performance and phosphorus (P) content in wheat plants. A functional marker was therefore developed for tagging Hap3. Collectively, our data shed new light on the molecular mechanism controlling Pi acquisition and utilisation in bread wheat. TaPHT1;9-4B and TaMYB4-7D may aid further research towards the development of P efficient crop cultivars.
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Affiliation(s)
- Pengfei Wang
- The National Engineering Research Center for Wheat, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, 450046, China
| | - Gezi Li
- The State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Guangwei Li
- The State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Shasha Yuan
- The National Engineering Research Center for Wheat, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, 450046, China
| | - Chenyang Wang
- The State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Yingxin Xie
- The National Engineering Research Center for Wheat, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, 450046, China
| | - Tiancai Guo
- The National Engineering Research Center for Wheat, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, 450046, China
| | - Guozhang Kang
- The National Engineering Research Center for Wheat, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, 450046, China
- The State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Daowen Wang
- The State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
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El Mazlouzi M, Morel C, Chesseron C, Robert T, Mollier A. Contribution of External and Internal Phosphorus Sources to Grain P Loading in Durum Wheat ( Triticum durum L.) Grown Under Contrasting P Levels. FRONTIERS IN PLANT SCIENCE 2020; 11:870. [PMID: 32625228 PMCID: PMC7314961 DOI: 10.3389/fpls.2020.00870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/28/2020] [Indexed: 05/02/2023]
Abstract
Phosphorus (P) in durum wheat grains after anthesis originates from either the external P source or the internal remobilization of P from different plant organs. The supply of P and its use by the plant are important factors that can affect the contribution of each source to grain P nutrition. Thus, this experiment aimed to quantify the origin of P in grains of durum wheat plants with different P nutritional status. Wheat plants were grown from juvenile stages to maturity in complete nutrient solutions with either high (0.125 mM) or low (0.025 mM) P concentrations in greenhouse conditions. Phosphorus in nutrient solutions was spiked by introducing 32P after anthesis to quantify the external P uptake and its partitioning within plant organs (spikelets, leaves, stems, roots, and post-anthesis tillers) and grains. Phosphorus use efficiency in durum wheat plants was also determined. The low and high P supply resulted in two highly different plant nutritional P status. Plants with low P status remobilized most of their stored P in all organs and allocated more than 72% of post-anthesis P uptake to grain P nutrition, whereas in the high P plants this was only 56%. Enhanced remobilization of P and the efficient allocation of newly acquired P to grains were crucial for durum wheat grain P nutrition grown under low P supply. The remobilization of P represented 81% of grain P in low P plants while it represented 65% for high P plants. Organs that contributed the most to P remobilization in low P plants were spikelets (43%) and leaves (35%). The post-anthesis tiller development was reduced in low P plants suggesting a preferential allocation of P to grains under this treatment. We concluded that P loading into grains in durum wheat is mainly derived from the remobilization of internal P sources stored before anthesis, even at high external P supply during grain filling.
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Affiliation(s)
- Mohamed El Mazlouzi
- ISPA, Bordeaux Sciences Agro, INRAE, F-33140, Villenave d’Ornon, France
- Univ. Bordeaux, UMR 1391 ISPA, F-33000, Bordeaux, France
| | - Christian Morel
- ISPA, Bordeaux Sciences Agro, INRAE, F-33140, Villenave d’Ornon, France
| | - Coralie Chesseron
- ISPA, Bordeaux Sciences Agro, INRAE, F-33140, Villenave d’Ornon, France
| | - Thierry Robert
- ISPA, Bordeaux Sciences Agro, INRAE, F-33140, Villenave d’Ornon, France
| | - Alain Mollier
- ISPA, Bordeaux Sciences Agro, INRAE, F-33140, Villenave d’Ornon, France
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15
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Liu XL, Wang L, Wang XW, Yan Y, Yang XL, Xie MY, Hu Z, Shen X, Ai H, Lin HH, Xu GH, Yang J, Sun SB. Mutation of the chloroplast-localized phosphate transporter OsPHT2;1 reduces flavonoid accumulation and UV tolerance in rice. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 102:53-67. [PMID: 31733118 DOI: 10.1111/tpj.14611] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/23/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
Phosphorus (P) is an essential macronutrient required for plant development and production. The mechanisms regulating phosphate (Pi) uptake are well established, but the function of chloroplast Pi homeostasis is poorly understood in Oryza sativa (rice). PHT2;1 is one of the transporters/translocators mediating Pi import into chloroplasts. In this study, to gain insight into the role of OsPHT2;1-mediated stroma Pi, we analyzed OsPHT2;1 function in Pi utilization and photoprotection. Our results showed that OsPHT2;1 was induced by Pi starvation and light exposure. Cell-based assays showed that OsPHT2;1 localized to the chloroplast envelope and functioned as a low-affinity Pi transporter. The ospht2;1 had reduced Pi accumulation, plant growth and photosynthetic rates. Metabolite profiling revealed that 52.6% of the decreased metabolites in ospht2;1 plants were flavonoids, which was further confirmed by 40% lower content of total flavonoids compared with the wild type. As a consequence, ospht2;1 plants were more sensitive to UV-B irradiation. Moreover, the content of phenylalanine, the precursor of flavonoids, was also reduced, and was largely associated with the repressed expression of ADT1/MTR1. Furthermore, the ospht2;1 plants showed decreased grain yields at relatively high levels of UV-B irradiance. In summary, OsPHT2;1 functions as a chloroplast-localized low-affinity Pi transporter that mediates UV tolerance and rice yields at different latitudes.
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Affiliation(s)
- Xiu-Li Liu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lan Wang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China
- Key Laboratory of Development and Application of Rural Renewable Energy, Biogas Institute of Ministry of Agricultural and Rural Affairs, Chengdu, 610041, Sichuan, China
| | - Xiao-Wen Wang
- Landscape Architecture Department, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yan Yan
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, 95616, USA
| | - Xiao-Li Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Meng-Yang Xie
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Zhi Hu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xing Shen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hao Ai
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hong-Hui Lin
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Guo-Hua Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jian Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Shu-Bin Sun
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
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16
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Irfan M, Aziz T, Maqsood MA, Bilal HM, Siddique KHM, Xu M. Phosphorus (P) use efficiency in rice is linked to tissue-specific biomass and P allocation patterns. Sci Rep 2020; 10:4278. [PMID: 32152340 PMCID: PMC7062884 DOI: 10.1038/s41598-020-61147-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 02/17/2020] [Indexed: 01/10/2023] Open
Abstract
Phosphorus (P) is a non-renewable resource which may be depleted within next few decades; hence high P use efficiency is need of time. Plants have evolved an array of adaptive mechanisms to enhance external P acquisition and reprioritize internal utilization under P deficiency. Tissue specific biomass and P allocation patterns may affect the P use efficiency in plants. six rice cultivars were grown in solution culture for 20 days and then were divided into two groups to receive either adequate P or no P that were harvested at 30, 40 and 50 days. Plants were dissected into various tissues/organs. Two rice cultivars viz Super Basmati (P-inefficient) and PS-2 (P-efficient) were grown in soil with no or 50 mg P kg-1 soil till maturity. Rice cultivars PS-2 and Basmati-2000 had higher P uptake, utilization efficiency and internal remobilization than other tested cultivars after P omission. Young leaves and roots were the major sinks while stems and mature leaves were the sources of P during P omission. In conclusion, biomass allocation and P accumulation among various tissues and P remobilization were major factors responsible for P efficiency.
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Affiliation(s)
- Muhammad Irfan
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan
- Soil and Environmental Sciences Division, Nuclear Institute of Agriculture, Tandojam, 70060, Pakistan
| | - Tariq Aziz
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan.
- The UWA Institute of Agriculture and UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA, 6001, Australia.
| | - Muhammad Aamer Maqsood
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Hafiz Muhammad Bilal
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan
- Department of Environmental Sciences, University of Okara, Okara, 56300, Pakistan
| | - Kadambot H M Siddique
- The UWA Institute of Agriculture and UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA, 6001, Australia
| | - Minggang Xu
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agri. Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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Abstract
Low phosphorus (P) availability is a major constraint for cotton production. Consequently, P-efficient genotypes can improve productivity under conditions where the higher application of P is not economical. This study was conducted to characterize cotton genotypes for P-use efficiency under various P concentrations (0, 10, 20, 40, 80, and 500 μM KH2PO4). The results showed large genotypic variation in five selected traits, such as root dry weight, shoot dry weight, photosynthetic activity, P-utilization efficiency, and P-uptake efficiency. Based on these five selected traits, the genotypes were grouped into three main classes as efficient, moderate efficient, and inefficient genotypes as proposed by different researchers. Most of the genotypes behaved in a similar pattern under different P concentrations. Among the genotypes, Xinluzao-49 and Xinluzao-48 were considered as P efficient while CCRI-64 and Yumian-21 as inefficient genotypes. However, the rest of the genotypes were considered as moderately P efficient. The results prove that a large genetic potential exists in cotton genotypes for P-use efficiency, and the use of P-efficient genotypes for cultivation will reduce the application of phosphatic fertilizers. Furthermore, the use of P-efficient genotypes will improve cotton breeding activities and help in improving the environmental sustainability of cotton production.
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18
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Zhang J, Jiang F, Shen Y, Zhan Q, Bai B, Chen W, Chi Y. Transcriptome analysis reveals candidate genes related to phosphorus starvation tolerance in sorghum. BMC PLANT BIOLOGY 2019; 19:306. [PMID: 31296169 PMCID: PMC6624980 DOI: 10.1186/s12870-019-1914-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 06/30/2019] [Indexed: 05/20/2023]
Abstract
BACKGROUND Phosphorus (P) deficiency in soil is a worldwide issue and a major constraint on the production of sorghum, which is an important staple food, forage and energy crop. The depletion of P reserves and the increasing price of P fertilizer make fertilizer application impractical, especially in developing countries. Therefore, identifying sorghum accessions with low-P tolerance and understanding the underlying molecular basis for this tolerance will facilitate the breeding of P-efficient plants, thereby resolving the P crisis in sorghum farming. However, knowledge in these areas is very limited. RESULTS The 29 sorghum accessions used in this study demonstrated great variability in their tolerance to low-P stress. The internal P content in the shoot was correlated with P tolerance. A low-P-tolerant accession and a low-P-sensitive accession were chosen for RNA-seq analysis to identify potential underlying molecular mechanisms. A total of 2089 candidate genes related to P starvation tolerance were revealed and found to be enriched in 11 pathways. Gene Ontology (GO) enrichment analyses showed that the candidate genes were associated with oxidoreductase activity. In addition, further study showed that malate affected the length of the primary root and the number of tips in sorghum suffering from low-P stress. CONCLUSIONS Our results show that acquisition of P from soil contributes to low-P tolerance in different sorghum accessions; however, the underlying molecular mechanism is complicated. Plant hormone (including auxin, ethylene, jasmonic acid, salicylic acid and abscisic acid) signal transduction related genes and many transcriptional factors were found to be involved in low-P tolerance in sorghum. The identified accessions will be useful for breeding new sorghum varieties with enhanced P starvation tolerance.
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Affiliation(s)
- Jinglong Zhang
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095 Jiangsu Province China
| | - Fangfang Jiang
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095 Jiangsu Province China
| | - Yixin Shen
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095 Jiangsu Province China
| | - Qiuwen Zhan
- College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Binqiang Bai
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095 Jiangsu Province China
| | - Wei Chen
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095 Jiangsu Province China
| | - Yingjun Chi
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095 Jiangsu Province China
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19
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Ye D, Chen J, Li T, Zhang X. Changes in P accumulation, tissue P fractions and acid phosphatase activity of Pilea sinofasciata in poultry manure-impacted soil. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 132:72-79. [PMID: 30176430 DOI: 10.1016/j.plaphy.2018.08.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 08/24/2018] [Accepted: 08/24/2018] [Indexed: 06/08/2023]
Abstract
Pilea sinofasciata is a promising phytoextraction material to remove excess phosphorus (P) from manure-impacted soil. However, little information is available on its physiological response to animal manure treatments. Here, P accumulation, tissue P fractions and acid phosphatase activity were investigated in a mining ecotype (ME) and a non-mining ecotype (NME) of P. sinofasciata at different poultry manure (PM) treatments (0, 25, 50, 75, 100 and 125 g kg-1). Biomass and P accumulation of the ME increased up to 50 g kg-1, after which they significantly decreased; while P accumulation of the NME increased up to 100 g kg-1. But, shoot and root P accumulation of the ME were significantly higher than those of the NME at all PM treatments, showing 1.13-2.92 and 1.11-2.89 times higher values, respectively. Inorganic P and nucleic P dominated in tissues of both ecotypes. Besides, the ME maintained higher concentrations of inorganic P and ester P in leaves and ester P, nucleic P and residual P in roots than the NME. Acid phosphatase activity in leaves and roots increased by increasing PM treatments, except in root at 125 g kg-1. Acid phosphatase activity in leaves of the ME was positively correlated with concentrations of inorganic P, ester P and nucleic P, while that of the NME only correlated with inorganic P concentration. Probably, the optimized P fractions allocation and higher tissue acid phosphatase allow the ME to grow well and efficiently accumulate P in PM-impacted soil.
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Affiliation(s)
- Daihua Ye
- College of Resources, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China; School of Biological Sciences, University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia
| | - Jing Chen
- College of Resources, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China; Mianyang Academy of Agricultural Sciences, 8 Songjiang Road, Mianyang, Sichuan 621023, China
| | - Tingxuan Li
- College of Resources, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China.
| | - Xizhou Zhang
- College of Resources, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
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Bilal HM, Aziz T, Maqsood MA, Farooq M, Yan G. Categorization of wheat genotypes for phosphorus efficiency. PLoS One 2018; 13:e0205471. [PMID: 30332479 PMCID: PMC6192622 DOI: 10.1371/journal.pone.0205471] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 09/25/2018] [Indexed: 11/17/2022] Open
Abstract
Production of phosphorus efficient crop cultivars can increase food productivity and decrease environmental pollution. Categorization of existing germplasm is a prerequisite to develop P efficient crop cultivars. For first experiment, 30 wheat genotypes were grown in hydroponics with two P levels (i.e., deficit, 20 μm KH2PO4 and adequate, 200 μm KH2PO4). Genotypes differed significantly for various P efficiency parameters. Two genotypes (Dirk and Bhakkar-02) showed < 25% decrease in growth at P deficiency. Genotype Seher-06 proved to be inefficient. Twelve selected genotypes based on the first experiment were sown in soil with two P levels (0 and 30 mg P kg-1) till maturity. As expected, genotypes differed for grain yield at both P levels. The efficient cultivars selected on the basis of both absolute and relative dry matter production at both P levels such as Dirk. Genotypes were grouped into three, four and nine classes on the basis of various parameters for P efficiency as proposed by different researchers. Most genotypes behaved in a similar fashion by different categorization methods and also at different P supply. The method to categorize the genotypes into three classes and plotting them into 9 classes proposed by Gill and his coworkers, is the best to differentiate the minor differences in genotypes. At least three different parameters at both P regimes should be used. The parameters may vary as per objectives of the study and/or growth conditions.
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Affiliation(s)
- Hafiz Muhammad Bilal
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, Australia
| | - Tariq Aziz
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, Australia
| | - Muhammad Aamer Maqsood
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Farooq
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, Australia
- Department of Agronomy, University of Agriculture, Faisalabad, Pakistan
- Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khoud, Oman
| | - Guijun Yan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, Australia
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Parra-Almuna L, Diaz-Cortez A, Ferrol N, Mora MDLL. Aluminium toxicity and phosphate deficiency activates antioxidant systems and up-regulates expression of phosphate transporters gene in ryegrass (Lolium perenne L.) plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 130:445-454. [PMID: 30077920 DOI: 10.1016/j.plaphy.2018.07.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/26/2018] [Accepted: 07/26/2018] [Indexed: 05/28/2023]
Abstract
Soil acidity, associated with aluminium (Al) toxicity and low phosphorus (P) availability, is considered the most important problem for agricultural production. Even though the Al-P interaction has been widely investigated, the impact of P-nutrition on Al-toxicity still remains controversial and poorly understood. To elucidate further insights into the underlying mechanisms of this interaction in ryegrass (Lolium perenne L.), P uptake, antioxidant responses and the gene expression of phosphate transporters were determined. Two ryegrass cultivars with different Al resistances, the Al-tolerant Nui cultivar and the Al-sensitive Expo cultivar were hydroponically grown under low (16 μM) and optimal (100 μM) P doses for 16 days. After P treatments, plants were exposed to Al doses (0 and 200 μM) under acidic conditions (pH 4.8) for 24 h. Al and P accumulation were higher in the roots of Nui than that of Expo. Moreover, lower Al accumulation was found in shoots of Nui independent of P supplies. Oxidative stress induced by Al-toxicity and P-deficiency was more severe in the Al-sensitive Expo. Expression levels of L. perenne phosphate transporters were higher in Nui than they were in Expo. While LpPHT1 expression was up-regulated by P deficiency and Al toxicity in both cultivars, LpPHT4 expression only increased in the Al-tolerant cultivar. This report shows that the higher Al-tolerance of Nui can be attributed to a greater antioxidant system under both P conditions. The observation of higher P and Al accumulation in roots of Nui might indicate that the Al-tolerance of Nui is a consequence of Al immobilization by P mediated by the high expression of phosphate transporters.
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Affiliation(s)
- Leyla Parra-Almuna
- Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Avenida Francisco Salazar, 01145, P.O. Box 54-D, Temuco, Chile; Programa de Doctorado en Ciencias de Recursos Naturales, Universidad de La Frontera, Avenida Francisco Salazar, 01145, P.O. Box 54-D, Temuco, Chile
| | - Andrea Diaz-Cortez
- Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Avenida Francisco Salazar, 01145, P.O. Box 54-D, Temuco, Chile
| | - Nuria Ferrol
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Profesor Albareda 1, 18008, Granada, Spain
| | - Maria de la Luz Mora
- Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Avenida Francisco Salazar, 01145, P.O. Box 54-D, Temuco, Chile.
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Sherman RE, Chowdhury PR, Baker KD, Weider LJ, Jeyasingh PD. Genotype-specific relationships among phosphorus use, growth and abundance in Daphnia pulicaria. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170770. [PMID: 29308224 PMCID: PMC5749992 DOI: 10.1098/rsos.170770] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 11/06/2017] [Indexed: 06/07/2023]
Abstract
The framework ecological stoichiometry uses elemental composition of species to make predictions about growth and competitive ability in defined elemental supply conditions. Although intraspecific differences in stoichiometry have been observed, we have yet to understand the mechanisms generating and maintaining such variation. We used variation in phosphorus (P) content within a Daphnia species to test the extent to which %P can explain variation in growth and competition. Further, we measured 33P kinetics (acquisition, assimilation, incorporation and retention) to understand the extent to which such variables improved predictions. Genotypes showed significant variation in P content, 33P kinetics and growth rate. P content alone was a poor predictor of growth rate and competitive ability. While most genotypes exhibited the typical growth penalty under P limitation, a few varied little in growth between P diets. These observations indicate that some genotypes can maintain growth under P-limited conditions by altering P use, suggesting that decomposing P content of an individual into physiological components of P kinetics will improve stoichiometric models. More generally, attention to the interplay between nutrient content and nutrient-use is required to make inferences regarding the success of genotypes in defined conditions of nutrient supply.
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Affiliation(s)
- Ryan E. Sherman
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK 74078, USA
| | | | - Kristina D. Baker
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK 74078, USA
| | - Lawrence J. Weider
- Department of Biology, Program in Ecology and Evolutionary Biology, University of Oklahoma, Norman, OK, USA
| | - Punidan D. Jeyasingh
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK 74078, USA
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Żebrowska E, Milewska M, Ciereszko I. Mechanisms of oat ( Avena sativa L.) acclimation to phosphate deficiency. PeerJ 2017; 5:e3989. [PMID: 29109915 PMCID: PMC5671117 DOI: 10.7717/peerj.3989] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 10/13/2017] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Deficiency of available forms of phosphorus is common in most soils and causes reduction of crop plants growth and yield. Recently, model plants responses to phosphate (Pi) deficiency have been intensively studied. However, acclimation mechanisms of cereals like oat (Avena sativa L.), to low Pi stress remains not fully understood. Oat plants have been usually cultured on poor soils, with a low nutrient content, but their responses to such conditions are not well known, therefore the main goal of the study was to investigate the mechanisms that enable oat plants to grow under low Pi conditions. METHODS Four oat cultivars (A. sativa, cv. Arab, Krezus, Rajtar and Szakal) were grown for three weeks in a nutrient media with various P sources: inorganic-KH2PO4 (control), organic-phytate (PA) and with no phosphate (-P). The effects of Pi deficiency on the level of P, oat growth parameters, intensity of photosynthesis, plant productivity, root exudation ability, localization, activity and isoforms of acid phosphatases, enzymes involved in Pi mobilization, were estimated. In addition, the effect of mycorrhization on plant growth was also observed. RESULTS All studied oat cultivars grown on Pi-deficient media had significantly decreased Pi content in the tissues. Pi deficiency caused inhibition of shoot growth, but generally it did not affect root elongation; root diameter was decreased, root/shoot ratios increased, whereas PA plants showed a similar growth to control. Photosynthesis rate and productivity parameters decreased under low Pi nutrition, however, sugar content generally increased. Studied oat cultivars did not respond to low Pi via increased exudation of carboxylates from the roots, as pH changes in the growth media were not observed. Pi starvation significantly increased the activity of extracellular and intracellular acid phosphatases (APases) in comparison to the control plants. Three major APase isoforms were detected in oat tissues and the isoform pattern was similar in all studied conditions, usually with a higher level of one of the isoforms under Pi starvation. Generally no significant effects of mycorrhizal colonization on growth of oat cultivars were observed. DISCUSSION We postulated that acid phosphatases played the most important role in oat cultivars acclimation to Pi deficiency, especially extracellular enzymes involved in Pi acquisition from soil organic P esters. These APases are mainly located in the epidermis of young roots, and may be released to the rhizosphere. On the other hand, intracellular APases could be involved in fast Pi remobilization from internal sources. Our study showed that oat, in contrast to other plants, can use phytates as the sole source of P. The studied oat cultivars demonstrated similar acclimation mechanisms to Pi deficiency, however, depending on stress level, they can use different pools of acid phosphatases.
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Affiliation(s)
- Ewa Żebrowska
- Department of Plant Physiology, Institute of Biology, University of Bialystok, Bialystok, Poland
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland
| | - Marta Milewska
- Department of Plant Physiology, Institute of Biology, University of Bialystok, Bialystok, Poland
| | - Iwona Ciereszko
- Department of Plant Physiology, Institute of Biology, University of Bialystok, Bialystok, Poland
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Wang D, Lv S, Jiang P, Li Y. Roles, Regulation, and Agricultural Application of Plant Phosphate Transporters. FRONTIERS IN PLANT SCIENCE 2017; 8:817. [PMID: 28572810 PMCID: PMC5435767 DOI: 10.3389/fpls.2017.00817] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 05/01/2017] [Indexed: 05/20/2023]
Abstract
Phosphorus (P) is an essential mineral nutrient for plant growth and development. Low availability of inorganic phosphate (orthophosphate; Pi) in soil seriously restricts the crop production, while excessive fertilization has caused environmental pollution. Pi acquisition and homeostasis depend on transport processes controlled Pi transporters, which are grouped into five families so far: PHT1, PHT2, PHT3, PHT4, and PHT5. This review summarizes the current understanding on plant PHT families, including phylogenetic analysis, function, and regulation. The potential application of Pi transporters and the related regulatory factors for developing genetically modified crops with high phosphorus use efficiency (PUE) are also discussed in this review. At last, we provide some potential strategies for developing high PUE crops under salt or drought stress conditions, which can be valuable for improving crop yields challenged by global scarcity of water resources and increasing soil salinization.
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Affiliation(s)
- Duoliya Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of SciencesBeijing, China
- University of Chinese Academy of SciencesBeijing, China
| | - Sulian Lv
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of SciencesBeijing, China
| | - Ping Jiang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of SciencesBeijing, China
| | - Yinxin Li
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of SciencesBeijing, China
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Teng W, Zhao YY, Zhao XQ, He X, Ma WY, Deng Y, Chen XP, Tong YP. Genome-wide Identification, Characterization, and Expression Analysis of PHT1 Phosphate Transporters in Wheat. FRONTIERS IN PLANT SCIENCE 2017; 8:543. [PMID: 28443126 PMCID: PMC5386973 DOI: 10.3389/fpls.2017.00543] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 03/27/2017] [Indexed: 05/19/2023]
Abstract
The PHT1 family of phosphate (Pi) transporters mediates phosphorus (P) uptake and re-mobilization in plants. A genome-wide sequence analysis of PHT1 genes in wheat (Triticum aestivum) was conducted, and their expression locations and responses to P availability were further investigated. We cloned 21 TaPHT1 genes from the homologous alleles at TaPHT1.1 to 1.10 through screening a BAC library and amplifying genomic sequences. The TaPHT1 transporters were clustered into five branches in the phylogenetic tree of PHT1 proteins, and the TaPHT1 genes from a given branch shared high similarities in sequences, expression locations, and responses to P availability. The seven tested PHT1 genes all showed Pi-transport activity in yeast (Saccharomyces cerevisiae) cells grown under both low Pi and high Pi conditions. The expression of TaPHT1.1/1.9, 1.2, and 1.10 were root specific. The expression of these TaPHT1 genes at flowering positively correlated with P uptake after stem elongation across three P application rates and two wheat varieties in a field experiment. Therefore, modification of PHT1 expression may improve P use efficiency in a broad regime of P availability.
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Affiliation(s)
- Wan Teng
- The State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
| | - Yan-Yan Zhao
- The State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
| | - Xue-Qiang Zhao
- The State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
| | - Xue He
- The State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
| | - Wen-Ying Ma
- The State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
| | - Yan Deng
- Institute of Tropical Agriculture and Forestry, Hainan UniversityHaikou, China
| | - Xin-Ping Chen
- Research Center of Resource, Environment and Food Security, China Agricultural UniversityBeijing, China
| | - Yi-Ping Tong
- The State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
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Secco D, Bouain N, Rouached A, Prom-U-Thai C, Hanin M, Pandey AK, Rouached H. Phosphate, phytate and phytases in plants: from fundamental knowledge gained in Arabidopsis to potential biotechnological applications in wheat. Crit Rev Biotechnol 2017; 37:898-910. [PMID: 28076998 DOI: 10.1080/07388551.2016.1268089] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Phosphorus (P) is an essential macronutrient for all living organisms. In plants, P is taken up from the rhizosphere by the roots mainly as inorganic phosphate (Pi), which is required in large and sufficient quantities to maximize crop yields. In today's agricultural society, crop yield is mostly ensured by the excessive use of Pi fertilizers, a costly practice neither eco-friendly or sustainable. Therefore, generating plants with improved P use efficiency (PUE) is of major interest. Among the various strategies employed to date, attempts to engineer genetically modified crops with improved capacity to utilize phytate (PA), the largest soil P form and unfortunately not taken up by plants, remains a key challenge. To meet these challenges, we need a better understanding of the mechanisms regulating Pi sensing, signaling, transport and storage in plants. In this review, we summarize the current knowledge on these aspects, which are mainly gained from investigations conducted in Arabidopsis thaliana, and we extended it to those available on an economically important crop, wheat. Strategies to enhance the PA use, through the use of bacterial or fungal phytases and other attempts of reducing seed PA levels, are also discussed. We critically review these data in terms of their potential for use as a technology for genetic manipulation of PUE in wheat, which would be both economically and environmentally beneficial.
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Affiliation(s)
- David Secco
- a Biochimie et Physiologie Moléculaire des Plantes , CNRS, INRA, Montpellier SupAgro, UM , Montpellier , France
| | - Nadia Bouain
- a Biochimie et Physiologie Moléculaire des Plantes , CNRS, INRA, Montpellier SupAgro, UM , Montpellier , France
| | - Aida Rouached
- a Biochimie et Physiologie Moléculaire des Plantes , CNRS, INRA, Montpellier SupAgro, UM , Montpellier , France
| | - Chanakan Prom-U-Thai
- b Agronomy Division, Department of Plant and Soil Sciences, Faculty of Agriculture , Chiang Mai University , Chiang Mai , Thailand
| | - Moez Hanin
- c Laboratoire de Biotechnologie et Amélioration des Plantes , Centre de Biotechnologie de Sfax , Sfax , Tunisie
| | - Ajay K Pandey
- d Department of Biotechnology, C-127 , National Agri-Food Biotechnology Institute , Punjab , India
| | - Hatem Rouached
- a Biochimie et Physiologie Moléculaire des Plantes , CNRS, INRA, Montpellier SupAgro, UM , Montpellier , France.,b Agronomy Division, Department of Plant and Soil Sciences, Faculty of Agriculture , Chiang Mai University , Chiang Mai , Thailand.,c Laboratoire de Biotechnologie et Amélioration des Plantes , Centre de Biotechnologie de Sfax , Sfax , Tunisie
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Shukla V, Kaur M, Aggarwal S, Bhati KK, Kaur J, Mantri S, Pandey AK. Tissue specific transcript profiling of wheat phosphate transporter genes and its association with phosphate allocation in grains. Sci Rep 2016; 6:39293. [PMID: 27995999 PMCID: PMC5172359 DOI: 10.1038/srep39293] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 11/21/2016] [Indexed: 11/26/2022] Open
Abstract
Approaches enabling efficient phosphorus utilization in crops are of great importance. In cereal crop like wheat, utilization of inorganic phosphate (Pi) is high and mature grains are the major sink for Pi utilization and storage. Research that addresses the importance of the Pi homeostasis in developing grains is limited. In an attempt to understand the Pi homeostasis in developing wheat grains, we identified twelve new phosphate transporters (PHT), these are phyologentically well distributed along with the members reported from Arabidopsis and rice. Enhanced expression of PHT1-subfamily genes was observed in roots subjected to the Pi starvation suggesting their active role in Pi homeostasis. Differential expression patterns of all the PHT genes during grain filling stages suggested their importance in the filial tissues. Additionally, high accumulation of Pi and total P in aleurone correlates well with the expression of TaPHTs and other phosphate starvation related genes. Tissue specific transcript accumulation of TaPHT1.1, TaPHT1.2, TaPHT1.4 in aleurone; TaPHT3.1 in embryo and TaPHT4.2 in the endosperm was observed. Furthermore, their transcript abundance was affected in low phytate wheat grains. Altogether, this study helps in expanding the knowledge and prioritize the candidate wheat Pi-transporters to modulate the Pi homeostasis in cereal grains.
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Affiliation(s)
- Vishnu Shukla
- National Agri-Food Biotechnology Institute (Department of Biotechnology, Government of India), C-127, Industrial Area, S.A.S. Nagar, Phase 8, Mohali-160071, Punjab, India
| | - Mandeep Kaur
- National Agri-Food Biotechnology Institute (Department of Biotechnology, Government of India), C-127, Industrial Area, S.A.S. Nagar, Phase 8, Mohali-160071, Punjab, India
| | - Sipla Aggarwal
- National Agri-Food Biotechnology Institute (Department of Biotechnology, Government of India), C-127, Industrial Area, S.A.S. Nagar, Phase 8, Mohali-160071, Punjab, India
| | - Kaushal Kumar Bhati
- National Agri-Food Biotechnology Institute (Department of Biotechnology, Government of India), C-127, Industrial Area, S.A.S. Nagar, Phase 8, Mohali-160071, Punjab, India
| | - Jaspreet Kaur
- Department of Biotechnology, University Institute of Engineering and Technology (UIET), Panjab University, Chandigarh, India
| | - Shrikant Mantri
- National Agri-Food Biotechnology Institute (Department of Biotechnology, Government of India), C-127, Industrial Area, S.A.S. Nagar, Phase 8, Mohali-160071, Punjab, India
| | - Ajay K. Pandey
- National Agri-Food Biotechnology Institute (Department of Biotechnology, Government of India), C-127, Industrial Area, S.A.S. Nagar, Phase 8, Mohali-160071, Punjab, India
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Młodzińska E, Zboińska M. Phosphate Uptake and Allocation - A Closer Look at Arabidopsis thaliana L. and Oryza sativa L. FRONTIERS IN PLANT SCIENCE 2016; 7:1198. [PMID: 27574525 PMCID: PMC4983557 DOI: 10.3389/fpls.2016.01198] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 07/27/2016] [Indexed: 05/17/2023]
Abstract
This year marks the 20th anniversary of the discovery and characterization of the two Arabidopsis PHT1 genes encoding the phosphate transporter in Arabidopsis thaliana. So far, multiple inorganic phosphate (Pi) transporters have been described, and the molecular basis of Pi acquisition by plants has been well-characterized. These genes are involved in Pi acquisition, allocation, and/or signal transduction. This review summarizes how Pi is taken up by the roots and further distributed within two plants: A. thaliana and Oryza sativa L. by plasma membrane phosphate transporters PHT1 and PHO1 as well as by intracellular transporters: PHO1, PHT2, PHT3, PHT4, PHT5 (VPT1), SPX-MFS and phosphate translocators family. We also describe the role of the PHT1 transporters in mycorrhizal roots of rice as an adaptive strategy to cope with limited phosphate availability in soil.
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Affiliation(s)
- Ewa Młodzińska
- Department of Plant Molecular Physiology, Institute of Experimental Biology, University of WrocławWrocław, Poland
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29
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Kariman K, Barker SJ, Jost R, Finnegan PM, Tibbett M. Sensitivity of jarrah (Eucalyptus marginata) to phosphate, phosphite, and arsenate pulses as influenced by fungal symbiotic associations. MYCORRHIZA 2016; 26:401-15. [PMID: 26810895 PMCID: PMC4909810 DOI: 10.1007/s00572-015-0674-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 12/14/2015] [Indexed: 05/28/2023]
Abstract
Many plant species adapted to P-impoverished soils, including jarrah (Eucalyptus marginata), develop toxicity symptoms when exposed to high doses of phosphate (Pi) and its analogs such as phosphite (Phi) and arsenate (AsV). The present study was undertaken to investigate the effects of fungal symbionts Scutellospora calospora, Scleroderma sp., and Austroboletus occidentalis on the response of jarrah to highly toxic pulses (1.5 mmol kg(-1) soil) of Pi, Phi, and AsV. S. calospora formed an arbuscular mycorrhizal (AM) symbiosis while both Scleroderma sp. and A. occidentalis established a non-colonizing symbiosis with jarrah plants. All these interactions significantly improved jarrah growth and Pi uptake under P-limiting conditions. The AM fungal colonization naturally declines in AM-eucalypt symbioses after 2-3 months; however, in the present study, the high Pi pulse inhibited the decline of AM fungal colonization in jarrah. Four weeks after exposure to the Pi pulse, plants inoculated with S. calospora had significantly lower toxicity symptoms compared to non-mycorrhizal (NM) plants, and all fungal treatments induced tolerance against Phi toxicity in jarrah. However, no tolerance was observed for AsV-treated plants even though all inoculated plants had significantly lower shoot As concentrations than the NM plants. The transcript profile of five jarrah high-affinity phosphate transporter (PHT1 family) genes in roots was not altered in response to any of the fungal species tested. Interestingly, plants exposed to high Pi supplies for 1 day did not have reduced transcript levels for any of the five PHT1 genes in roots, and transcript abundance of four PHT1 genes actually increased. It is therefore suggested that jarrah, and perhaps other P-sensitive perennial species, respond positively to Pi available in the soil solution through increasing rather than decreasing the expression of selected PHT1 genes. Furthermore, Scleroderma sp. can be considered as a fungus with dual functional capacity capable of forming both ectomycorrhizal and non-colonizing associations, where both pathways are always accompanied by evident growth and nutritional benefits.
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Affiliation(s)
- Khalil Kariman
- School of Earth and Environment M087, The University of Western Australia, Crawley, WA, 6009, Australia
- School of Plant Biology M084, The University of Western Australia, Crawley, WA, 6009, Australia
| | - Susan J Barker
- School of Plant Biology M084, The University of Western Australia, Crawley, WA, 6009, Australia
- Institute of Agriculture M082, The University of Western Australia, Crawley, WA, 6009, Australia
| | - Ricarda Jost
- School of Plant Biology M084, The University of Western Australia, Crawley, WA, 6009, Australia
- School of Life Science, La Trobe University, Bundoora, VIC, 3083, Australia
| | - Patrick M Finnegan
- School of Plant Biology M084, The University of Western Australia, Crawley, WA, 6009, Australia
- Institute of Agriculture M082, The University of Western Australia, Crawley, WA, 6009, Australia
| | - Mark Tibbett
- Centre for Agri-Environmental Research, and Soil Research Centre, School of Agriculture Policy and Development, University of Reading, Berkshire, RG6 6AR, UK.
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30
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Zhang K, Liu H, Song J, Wu W, Li K, Zhang J. Physiological and comparative proteome analyses reveal low-phosphate tolerance and enhanced photosynthesis in a maize mutant owing to reinforced inorganic phosphate recycling. BMC PLANT BIOLOGY 2016; 16:129. [PMID: 27277671 PMCID: PMC4898391 DOI: 10.1186/s12870-016-0825-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 05/31/2016] [Indexed: 05/25/2023]
Abstract
BACKGROUND The low-phosphate-tolerant maize mutant Qi319-96 was obtained from Qi319 through cellular engineering. To elucidate the molecular mechanisms underlying the low-phosphate tolerance of this mutant, we performed comparative proteome analyses of the leaves of Qi319-96 and Qi319 under inorganic phosphate (Pi)-sufficient and Pi-deficient conditions. RESULTS Low-phosphorus levels limit plant growth and metabolism. Although the overall phosphorus contents of shoots were not significantly different between Qi319 and Qi319-96, the Pi level of Qi319-96 was 52.94 % higher than that of Qi319. Under low phosphorus conditions, Qi319-96 had increased chlorophyll levels and enhanced photosynthesis. The changes in starch and sucrose contents under these conditions also differed between genotypes. The proteomic changes included 29 (Pi-sufficient) and 71 (Pi-deficient) differentially expressed proteins involved in numerous metabolic processes. Proteome and physiological analyses revealed that Qi319-96 could better remodel the lipid composition of membranes and had higher V-ATPase activity levels than Qi319 under low-phosphate starvation, which enhanced the recycling of intracellular Pi, as reflected by its increased Pi levels. Chlorophyll biosynthesis was improved and the levels, and activities, of several Calvin cycle and "CO2 pump" enzymes were greater in Qi319-96 than in Qi319, which led to a higher rate of photosynthesis under low-phosphate stress in this line compared with in Qi319. CONCLUSIONS Our results suggest that the increased tolerance of the maize mutant Qi319-96 to low-phosphate levels is owing to its ability to increase Pi availability. Additionally, inbred lines of maize with low-P-tolerant traits could be obtained effectively through cellular engineering.
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Affiliation(s)
- Kewei Zhang
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, 27 Shanda South Road, Jinan, 250100, People's Republic of China.
| | - Hanhan Liu
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, 27 Shanda South Road, Jinan, 250100, People's Republic of China
| | - Jiuling Song
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, 27 Shanda South Road, Jinan, 250100, People's Republic of China
| | - Wei Wu
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, 17 Tsinghuadong Road, Beijing, 100083, People's Republic of China
| | - Kunpeng Li
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, 27 Shanda South Road, Jinan, 250100, People's Republic of China
| | - Juren Zhang
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, 27 Shanda South Road, Jinan, 250100, People's Republic of China
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Stigter KA, Plaxton WC. Molecular Mechanisms of Phosphorus Metabolism and Transport during Leaf Senescence. PLANTS 2015; 4:773-98. [PMID: 27135351 PMCID: PMC4844268 DOI: 10.3390/plants4040773] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 11/30/2015] [Accepted: 12/08/2015] [Indexed: 11/16/2022]
Abstract
Leaf senescence, being the final developmental stage of the leaf, signifies the transition from a mature, photosynthetically active organ to the attenuation of said function and eventual death of the leaf. During senescence, essential nutrients sequestered in the leaf, such as phosphorus (P), are mobilized and transported to sink tissues, particularly expanding leaves and developing seeds. Phosphorus recycling is crucial, as it helps to ensure that previously acquired P is not lost to the environment, particularly under the naturally occurring condition where most unfertilized soils contain low levels of soluble orthophosphate (Pi), the only form of P that roots can directly assimilate from the soil. Piecing together the molecular mechanisms that underpin the highly variable efficiencies of P remobilization from senescing leaves by different plant species may be critical for devising effective strategies for improving overall crop P-use efficiency. Maximizing Pi remobilization from senescing leaves using selective breeding and/or biotechnological strategies will help to generate P-efficient crops that would minimize the use of unsustainable and polluting Pi-containing fertilizers in agriculture. This review focuses on the molecular mechanisms whereby P is remobilized from senescing leaves and transported to sink tissues, which encompasses the action of hormones, transcription factors, Pi-scavenging enzymes, and Pi transporters.
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Affiliation(s)
- Kyla A Stigter
- Department of Biology, Queen's University, Kingston, Ontario K7L 3N6, Canada.
| | - William C Plaxton
- Department of Biology, Queen's University, Kingston, Ontario K7L 3N6, Canada.
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada.
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Lambers H, Finnegan PM, Jost R, Plaxton WC, Shane MW, Stitt M. Phosphorus nutrition in Proteaceae and beyond. NATURE PLANTS 2015; 1:15109. [PMID: 27250542 DOI: 10.1038/nplants.2015.109] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Proteaceae in southwestern Australia have evolved on some of the most phosphorus-impoverished soils in the world. They exhibit a range of traits that allow them to both acquire and utilize phosphorus highly efficiently. This is in stark contrast with many model plants such as Arabidopsis thaliana and crop species, which evolved on soils where nitrogen is the major limiting nutrient. When exposed to low phosphorus availability, these plants typically exhibit phosphorus-starvation responses, whereas Proteaceae do not. This Review explores the traits that account for the very high efficiency of acquisition and use of phosphorus in Proteaceae, and explores which of these traits are promising for improving the phosphorus efficiency of crop plants.
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Affiliation(s)
- H Lambers
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), Western Australia 6009, Australia
| | - P M Finnegan
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), Western Australia 6009, Australia
| | - R Jost
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), Western Australia 6009, Australia
| | - W C Plaxton
- Department of Biology and Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - M W Shane
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), Western Australia 6009, Australia
| | - M Stitt
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany
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Santa-María GE, Moriconi JI, Oliferuk S. Internal efficiency of nutrient utilization: what is it and how to measure it during vegetative plant growth? JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:3011-8. [PMID: 25922492 DOI: 10.1093/jxb/erv162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Efficient use of the resources required by plants to sustain crop production is considered an important objective in agriculture. In this context, the idea of developing crops with an enhanced ability to utilize mineral nutrients already taken up by roots has been proposed. In recent years powerful tools that allow the association of phenotypic variation with high-resolution genetic maps of crop plants have also emerged. To take advantage of these tools, accurate methods are needed to estimate the internal efficiency of nutrient utilization (ENU) at the whole-plant level, which requires using suitable conceptual and experimental approaches. Here we highlight some inconsistencies in the definitions of ENU commonly used for ENU 'phenotyping' at the vegetative stage and suggest that it would be convenient to adopt a dynamic definition. The idea that ENU should provide information about the relationship between carbon and mineral nutrient economies mainly during the period under which growth is actually affected by low internal nutrient concentration is here advocated as a guide for the selection of adequate operational ENU formulae for the vegetative stage. The desirability of using experimental approaches that allow removal of the influence of nutrient acquisition efficiency on ENU estimations is highlighted. It is proposed that the use of simulation models could help refine the conclusions obtained through these experimental procedures. Some potential limitations in breeding for high ENU are also considered.
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Affiliation(s)
- Guillermo E Santa-María
- Instituto Tecnológico Chascomús, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) and Universidad Nacional de San Martín (UNSAM). Avda Intendente Marino km 8,2. Chascomús, 7130, Buenos Aires, Argentina
| | - Jorge I Moriconi
- Instituto Tecnológico Chascomús, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) and Universidad Nacional de San Martín (UNSAM). Avda Intendente Marino km 8,2. Chascomús, 7130, Buenos Aires, Argentina
| | - Sonia Oliferuk
- Instituto Tecnológico Chascomús, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) and Universidad Nacional de San Martín (UNSAM). Avda Intendente Marino km 8,2. Chascomús, 7130, Buenos Aires, Argentina
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Aziz T, Lambers H, Nicol D, Ryan MH. Mechanisms for tolerance of very high tissue phosphorus concentrations in Ptilotus polystachyus. PLANT, CELL & ENVIRONMENT 2015; 38:790-799. [PMID: 25258291 DOI: 10.1111/pce.12450] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 09/01/2014] [Accepted: 09/08/2014] [Indexed: 06/03/2023]
Abstract
Study of plants with unusual phosphorus (P) physiology may assist development of more P-efficient crops. Ptilotus polystachyus grows well at high P supply, when shoot P concentrations ([P]) may exceed 40 mg P g(-1) dry matter (DM). We explored the P physiology of P. polystachyus seedlings grown in nutrient solution with 0-5 mM P. In addition, young leaves and roots of soil-grown plants were used for cryo-scanning electron microscopy and X-ray microanalysis. No P-toxicity symptoms were observed, even at 5 mM P in solution. Shoot DM was similar at 0.1 and 1.0 mM P in solution, but was ∼14% lower at 2 and 5 mM P. At 1 mM P, [P] was 36, 18, 14 and 11 mg P g(-1) DM in mature leaves, young leaves, stems and roots, respectively. Leaf potassium, calcium and magnesium concentrations increased with increasing P supply. Leaf epidermal and palisade mesophyll cells had similar [P]. The root epidermis and most cortical cells had senesced, even in young roots. We conclude that preferential accumulation of P in mature leaves, accumulation of balancing cations and uniform distribution of P across leaf cell types allow P. polystachyus to tolerate very high leaf [P].
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Affiliation(s)
- Tariq Aziz
- School of Plant Biology and Institute of Agriculture, University of Western Australia, Crawley, Western Australia, 6009, Australia; Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan
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