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Nartey OD, Liu D, Luo J, Lindsey S, Chen Z, Yuan J, Zaman M, Hogarh JN, Ding W. Optimizing application of dairy effluent with synthetic N fertilizer reduced nitrogen leaching in clay loam soil. Heliyon 2024; 10:e33900. [PMID: 39050458 PMCID: PMC11268352 DOI: 10.1016/j.heliyon.2024.e33900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 06/27/2024] [Accepted: 06/28/2024] [Indexed: 07/27/2024] Open
Abstract
High application rates of dairy effluent and manure are often associated with nitrogen (N) leaching, which can affect groundwater quality. Here, we used a lysimeter to examine N leaching losses and biomass yield following application of dairy effluent and manure under wheat-maize cropping. The field experiment included seven treatments: no N fertilizer (Control); 200/300 kg N ha-1 synthetic N fertilizer only (wheat/maize) (CN); 100/150 kg N ha-1 synthetic N fertilizer plus 100/150 (DE1), 150/200 (DE2) and 250/350 (DE3) kg N ha-1 dairy effluent; 100/150 kg N ha-1 synthetic fertilizer plus 100/150 kg N ha-1 dairy manure (SM1); and 150/225 kg N ha-1 synthetic fertilizer plus 50/75 kg N ha-1 dairy manure (SM2). Compared with CN, DE1 treatment increased maize yield by 10.0 %, wheat N use efficiency (NUE) by 26.5 %, and wheat and maize N uptake by 7.7-16.3 %, while reduced N leaching by 22.4 % in wheat season and by 40.4 % in the maize season. In contrast, DE2 and DE3 treatment increased N leaching by 27.2-241 % and reduced NUE by 26.2-55.2 %. SM2 treatment increased yield and NUE by 8.8 % and 7.8 %, respectively, and reduced N leaching by 42.9 % during the wheat but not the maize season. Annual N leaching losses were 37.6 kg N ha-1 under CN treatment, but decreased to 27.4 kg N ha-1 under DE1. In contrast, N leaching increased to 52.8 and 84.1 kg N ha-1 under DE2 and DE3 treatment, respectively (P < 0.05). Meanwhile, under SM1 and SM2 treatment, N leaching decreased by 71.2 % and 32.0 %, respectively, compared with CN. These results suggest that replacing 50 % and 25 % synthetic N fertilizer with dairy farm effluent and manure could reduce N leaching losses but had varied effects on crop productivity under wheat-maize cropping.
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Affiliation(s)
- Obemah David Nartey
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
- Department of Environmental Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Deyan Liu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Jiafa Luo
- AgResearch Limited, Ruakura Research Centre, Hamilton, 3240, New Zealand
| | - Stuart Lindsey
- AgResearch Limited, Ruakura Research Centre, Hamilton, 3240, New Zealand
| | - Zengming Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Junji Yuan
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Mohammad Zaman
- Soil and Water Management & Crop Nutrition Section, Joint FAO/IAEA Division, International Atomic Energy Agency, 1400, Vienna, Austria
| | - Jonathan Nartey Hogarh
- Department of Environmental Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Weixin Ding
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
- University of Chinese Academy of Sciences, Nanjing, 211135, China
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Kuppe CW, Postma JA. Benefits and limits of biological nitrification inhibitors for plant nitrogen uptake and the environment. Sci Rep 2024; 14:15027. [PMID: 38951138 PMCID: PMC11217430 DOI: 10.1038/s41598-024-65247-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 06/18/2024] [Indexed: 07/03/2024] Open
Abstract
Plant growth and high yields are secured by intensive use of nitrogen (N) fertilizer, which, however, pollutes the environment, especially when N is in the form of nitrate. Ammonium is oxidized to nitrate by nitrifiers, but roots can release biological nitrification inhibitors (BNIs). Under what conditions does root-exudation of BNIs facilitate nitrogen N uptake and reduce pollution by N loss to the environment? We modeled the spatial-temporal dynamics of nitrifiers, ammonium, nitrate, and BNIs around a root and simulated root N uptake and net rhizosphere N loss over the plant's life cycle. We determined the sensitivity of N uptake and loss to variations in the parameter values, testing a broad range of soil-plant-microbial conditions, including concentrations, diffusion, sorption, nitrification, population growth, and uptake kinetics. An increase in BNI exudation reduces net N loss and, under most conditions, increases plant N uptake. BNIs decrease uptake in the case of (1) low ammonium concentrations, (2) high ammonium adsorption to the soil, (3) rapid nitrate- or slow ammonium uptake by the plant, and (4) a slowly growing or (5) fast-declining nitrifier population. Bactericidal inhibitors facilitate uptake more than bacteriostatic ones. Some nitrification, however, is necessary to maximize uptake by both ammonium and nitrate transporter systems. An increase in BNI exudation should be co-selected with improved ammonium uptake. BNIs can reduce N uptake, which may explain why not all species exude BNIs but have a generally positive effect on the environment by increasing rhizosphere N retention.
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Affiliation(s)
- Christian W Kuppe
- Institute of Bio- and Geosciences-Plant Sciences (IBG-2), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.
- Faculty 1, RWTH Aachen University, Aachen, Germany.
| | - Johannes A Postma
- Institute of Bio- and Geosciences-Plant Sciences (IBG-2), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
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Behera PR, Behera KK, Sethi G, Prabina BJ, Bai AT, Sipra BS, Adarsh V, Das S, Behera KC, Singh L, Mishra MK, Behera M. Enhancing Agricultural Sustainability Through Rhizomicrobiome: A Review. J Basic Microbiol 2024:e2400100. [PMID: 38899609 DOI: 10.1002/jobm.202400100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 05/02/2024] [Accepted: 05/19/2024] [Indexed: 06/21/2024]
Abstract
Sustainable agriculture represents the responsible utilization of natural resources while safeguarding the well-being of the natural environment. It encompasses the objectives of preserving the environment, fostering economic growth, and promoting socioeconomic equality. To achieve sustainable development for humanity, it is imperative to prioritize sustainable agriculture. One significant approach to achieving this transition is the extensive utilization of microbes, which play a crucial role due to the genetic reliance of plants on the beneficial functions provided by symbiotic microbes. This review focuses on the significance of rhizospheric microbial communities, also known as the rhizomicrobiome (RM). It is a complex community of microorganisms that live in the rhizosphere and influence the plant's growth and health. It provides its host plant with various benefits related to plant growth, including biocontrol, biofertilization, phytostimulation, rhizoremediation, stress resistance, and other advantageous properties. Yet, the mechanisms by which the RM contributes to sustainable agriculture remain largely unknown. Investigating this microbial population presents a significant opportunity to advance toward sustainable agriculture. Hence, this study aims to provide an overview of the diversity and applications of RM in sustainable agriculture practices. Lately, there has been growing momentum in various areas related to rhizobiome research and its application in agriculture. This includes rhizosphere engineering, synthetic microbiome application, agent-based modeling of the rhizobiome, and metagenomic studies. So, developing bioformulations of these beneficial microorganisms that support plant growth could serve as a promising solution for future strategies aimed at achieving a new green revolution.
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Affiliation(s)
| | | | - Gangadhar Sethi
- Department of Botany, Shailabala Women's Autonomous College, Cuttack, Odisha, India
| | - B Jeberlin Prabina
- Department of Soil Science and Agricultural Chemistry, VOC AGRL College and Research Institute, Killikulam, India
| | - A Thoyajakshi Bai
- Department of Plant Pathology, College of Agriculture, Jawarharlal Nehru Krishi Vishwavidyalaya, Jabalpur, Madhya Pradesh, India
| | - B S Sipra
- Department of Botany, Ravenshaw University, Cuttack, Odisha, India
| | - Varanasi Adarsh
- School of Agriculture, GIET University, Rayagada, Odisha, India
| | - Sasmita Das
- Department of Botany, College of Basic Science and Humanities, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India
| | | | - Lakshmi Singh
- Department of Botany, College of Basic Science and Humanities, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India
| | - Mihir Kumar Mishra
- Department of Plant Pathology, College of Agriculture, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India
| | - Maheswari Behera
- School of Agriculture, GIET University, Rayagada, Odisha, India
- Department of Botany, College of Basic Science and Humanities, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India
- Department of Plant Pathology, College of Agriculture, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India
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Li C, Li Y, Yang J, Lian B, Wang J, Zou G. Regulating root structure of potted lettuce to magnify absorption from APP and UAN fertilizers. FRONTIERS IN PLANT SCIENCE 2024; 15:1407984. [PMID: 38882568 PMCID: PMC11177227 DOI: 10.3389/fpls.2024.1407984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 05/20/2024] [Indexed: 06/18/2024]
Abstract
Introduction Improvement of root architecture is crucial to increasing nutrient acquisition. Methods Two pot experiments were conducted to investigate the effects of different concentrations of urea ammonium nitrate solution (UAN) and ammonium polyphosphate (APP) on lettuce root architecture and the relationship between roots and nitrogen (N) and phosphorus (P) absorption. Results The results showed that lettuce yield, quality, and root architecture were superior in the APP4 treatment compared to other P fertilizer treatments. The N480 treatment (480 mg N kg-1 UAN) significantly outperformed other N treatments in terms of root length, root surface area, and root volume. There were significant quantitative relationships between root architecture indices and crop uptake of N and P. The relationships between P uptake and root length and root surface area followed power functions. Crop N uptake was significantly linearly related to the length of fine roots with a diameter of <0.5 mm. Conclusion and discussion The length of fine roots played a more prominent role in promoting N absorption, while overall root size was more important for P absorption. APP has a threshold of 9.3 mg P kg-1 for stimulating the root system. Above this threshold, a rapid increase in root absorption of P. UAN can promote extensive growth of fine roots with a diameter less than 0.5 mm. Applying appropriate rates of APP and limiting UAN application to less than 400 mg N kg-1 can improve root architecture to enhance N and P absorption by lettuce. These results highlight a new possibility to improve nutrients use efficiency while maintaining high yields.
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Affiliation(s)
- Changqing Li
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding, China
| | - Yahao Li
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Department of Greenhouse Management, Beijing Cuihu Agricultural Technology Co., Ltd., Beijing, China
| | - Jungang Yang
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Bingrui Lian
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jiqing Wang
- College of Agriculture and Forestry Sciences, Hebei North University, Zhangjiakou, China
| | - Guoyuan Zou
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Zhang Y, Wu X, Wang X, Dai M, Peng Y. Crop root system architecture in drought response. J Genet Genomics 2024:S1673-8527(24)00100-0. [PMID: 38723744 DOI: 10.1016/j.jgg.2024.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/26/2024] [Accepted: 05/01/2024] [Indexed: 07/27/2024]
Abstract
Drought is a natural disaster that profoundly impacts on global agricultural production, significantly reduces crop yields, and thereby poses a severe threat to worldwide food security. Addressing the challenge of effectively improving crop drought resistance (DR) to mitigate yield loss under drought conditions is a global issue. An optimal root system architecture (RSA) plays a pivotal role in enhancing crops' capacity to efficiently uptake water and nutrients, which consequently strengthens their resilience against environmental stresses. In this review, we discuss the compositions and roles of crop RSA and summarize the most recent developments in augmenting drought tolerance in crops by manipulating RSA-related genes. Based on the current research, we propose the potential optimal RSA configuration that could be helpful in enhancing crop DR. Lastly, we discussed the existing challenges and future directions for breeding crops with enhanced DR capabilities through genetic improvements targeting RSA.
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Affiliation(s)
- Yanjun Zhang
- College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China; State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Crop Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China; Key Laboratory of Crop Gene Resources and Germplasm Innovation in Northwest Cold and Arid Regions, Ministry of Agriculture and Rural Affairs, Lanzhou, Gansu 730070, China
| | - Xi Wu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Hubei Hongshan Laboratory, Wuhan, HuBei 430070, China
| | - Xingrong Wang
- Crop Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China; Key Laboratory of Crop Gene Resources and Germplasm Innovation in Northwest Cold and Arid Regions, Ministry of Agriculture and Rural Affairs, Lanzhou, Gansu 730070, China
| | - Mingqiu Dai
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Hubei Hongshan Laboratory, Wuhan, HuBei 430070, China.
| | - Yunling Peng
- College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China; State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, Gansu 730070, China.
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Ginzburg DN, Cox JA, Rhee SY. Non-destructive, whole-plant phenotyping reveals dynamic changes in water use efficiency, photosynthesis, and rhizosphere acidification of sorghum accessions under osmotic stress. PLANT DIRECT 2024; 8:e571. [PMID: 38464685 PMCID: PMC10918709 DOI: 10.1002/pld3.571] [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: 12/05/2023] [Revised: 02/06/2024] [Accepted: 02/08/2024] [Indexed: 03/12/2024]
Abstract
Noninvasive phenotyping can quantify dynamic plant growth processes at higher temporal resolution than destructive phenotyping and can reveal phenomena that would be missed by end-point analysis alone. Additionally, whole-plant phenotyping can identify growth conditions that are optimal for both above- and below-ground tissues. However, noninvasive, whole-plant phenotyping approaches available today are generally expensive, complex, and non-modular. We developed a low-cost and versatile approach to noninvasively measure whole-plant physiology over time by growing plants in isolated hydroponic chambers. We demonstrate the versatility of our approach by measuring whole-plant biomass accumulation, water use, and water use efficiency every two days on unstressed and osmotically stressed sorghum accessions. We identified relationships between root zone acidification and photosynthesis on whole-plant water use efficiency over time. Our system can be implemented using cheap, basic components, requires no specific technical expertise, and should be suitable for any non-aquatic vascular plant species.
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Affiliation(s)
- Daniel N. Ginzburg
- Department of Plant BiologyCarnegie Institution for ScienceStanfordCaliforniaUSA
- Present address:
Department of Plant SciencesUniversity of CambridgeCambridgeUK
| | - Jack A. Cox
- Department of Plant BiologyCarnegie Institution for ScienceStanfordCaliforniaUSA
| | - Seung Y. Rhee
- Department of Plant BiologyCarnegie Institution for ScienceStanfordCaliforniaUSA
- Present address:
Plant Resilience Institute, Departments of Biochemistry and Molecular Biology, Plant Biology, and Plant, Soil, and Microbial SciencesMichigan State UniversityEast LansingMichiganUSA
- Present address:
Water and Life Interface InstituteEast LansingMichigan48824USA
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7
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Bornø ML, Zervas A, Bak F, Merl T, Koren K, Nicolaisen MH, Jensen LS, Müller-Stöver DS. Differential impacts of sewage sludge and biochar on phosphorus-related processes: An imaging study of the rhizosphere. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:166888. [PMID: 37730064 DOI: 10.1016/j.scitotenv.2023.166888] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/15/2023] [Accepted: 09/05/2023] [Indexed: 09/22/2023]
Abstract
Recycling of phosphorus (P) from waste streams in agriculture is essential to reduce the negative environmental effects of surplus P and the unsustainable mining of geological P resources. Sewage sludge (SS) is an important P source; however, several issues are associated with the handling and application of SS in agriculture. Thus, post-treatments such as pyrolysis of SS into biochar (BC) could address some of these issues. Here we elucidate how patches of SS in soil interact with the living roots of wheat and affect important P-related rhizosphere processes compared to their BC counterparts. Wheat plants were grown in rhizoboxes with sandy loam soil, and 1 cm Ø patches with either SS or BC placed 10 cm below the seed. A negative control (CK) was included. Planar optode pH sensors were used to visualize spatiotemporal pH changes during 40 days of plant growth, diffusive gradients in thin films (DGT) were applied to map labile P, and zymography was used to visualize the spatial distribution of acid (ACP) and alkaline (ALP) phosphatase activity. In addition, bulk soil measurements of available P, pH, and ACP activity were conducted. Finally, the relative abundance of bacterial P-cycling genes (phoD, phoX, phnK) was determined in the patch area rhizosphere. Labile P was only observed in the area of the SS patches, and SS further triggered root proliferation and increased the activity of ACP and ALP in interaction with the roots. In contrast, BC seemed to be inert, had no visible effect on root growth, and even reduced ACP and ALP activity in the patch area. Furthermore, there was a lower relative abundance of phoD and phnK genes in the BC rhizosphere compared to the CK. Hence, optimization of BC properties is needed to increase the short-term efficiency of BC from SS as a P fertilizer.
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Affiliation(s)
- Marie Louise Bornø
- University of Copenhagen, Department of Plant & Environmental Sciences, Thorvaldsensvej 40, 1821 Frederiksberg, Denmark.
| | - Athanasios Zervas
- Aarhus University, Department of Environmental Science, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Frederik Bak
- University of Copenhagen, Department of Plant & Environmental Sciences, Thorvaldsensvej 40, 1821 Frederiksberg, Denmark; Austrian Institute of Technology, Bioresources Unit, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria
| | - Theresa Merl
- Aarhus University Centre for Water Technology, Department of Biology - Microbiology, Ny Munkegade 116, 8000 Aarhus C, Denmark
| | - Klaus Koren
- Aarhus University Centre for Water Technology, Department of Biology - Microbiology, Ny Munkegade 116, 8000 Aarhus C, Denmark
| | - Mette H Nicolaisen
- University of Copenhagen, Department of Plant & Environmental Sciences, Thorvaldsensvej 40, 1821 Frederiksberg, Denmark
| | - Lars S Jensen
- University of Copenhagen, Department of Plant & Environmental Sciences, Thorvaldsensvej 40, 1821 Frederiksberg, Denmark
| | - Dorette S Müller-Stöver
- University of Copenhagen, Department of Plant & Environmental Sciences, Thorvaldsensvej 40, 1821 Frederiksberg, Denmark
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Zhang C, Li Y, Yang T, Shi M. Overexpression of PsAMT1.2 in poplar enhances nitrogen utilization and resistance to drought stress. TREE PHYSIOLOGY 2023; 43:1796-1810. [PMID: 37384396 DOI: 10.1093/treephys/tpad082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 06/07/2023] [Accepted: 06/20/2023] [Indexed: 07/01/2023]
Abstract
Ammonium is an important form of inorganic nitrogen, which is essential for plant growth and development, and the uptake of ammonium is mediated by different members of ammonium transporters (AMTs). It is reported that PsAMT1.2 is specially expressed in the root of poplar, and the overexpression of PsAMT1.2 could improve plant growth and the salt tolerance of poplar. However, the role of AMTs in plant drought and low nitrogen (LN) resistance remains unclear. To understand the role of PsAMT1.2 in drought and LN tolerance, the response of PsAMT1.2-overexpression poplar to polyethylene glycol (PEG)-simulated drought stress (5% PEG) under LN (0.001 mM NH4NO3) and moderate nitrogen (0.5 mM NH4NO3) conditions was investigated. The PsAMT1.2-overexpression poplar showed better growth with increased stem increment, net photosynthetic rate, chlorophyll content, root length, root area, average root diameter and root volume under drought and/or LN stress compared with the wild type (WT). Meanwhile, the content of malondialdehyde significantly decreased, and the activities of superoxide dismutase and catalase significantly increased in the roots and leaves of PsAMT1.2-overexpression poplar compared with WT. The content of NH4+ and NO2- in the roots and leaves of PsAMT1.2-overexpression poplar was increased, and nitrogen metabolism-related genes, such as GS1.3, GS2, Fd-GOGAT and NADH-GOGAT, were significantly upregulated in the roots and/or leaves of PsAMT1.2-overexpression poplar compared with WT under drought and LN stress. The result of this study would be helpful for understanding the function of PsAMT1.2 in plant drought and LN tolerance and also provides a new insight into improving the drought and LN tolerance of Populus at the molecular level.
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Affiliation(s)
- Chunxia Zhang
- College of Forestry, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi Province, China
| | - Yang Li
- College of Forestry, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi Province, China
| | - Tianli Yang
- College of Forestry, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi Province, China
| | - Mengting Shi
- College of Forestry, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi Province, China
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Núñez-Cano J, Romera FJ, Prieto P, García MJ, Sevillano-Caño J, Agustí-Brisach C, Pérez-Vicente R, Ramos J, Lucena C. Effect of the Nonpathogenic Strain Fusarium oxysporum FO12 on Fe Acquisition in Rice ( Oryza sativa L.) Plants. PLANTS (BASEL, SWITZERLAND) 2023; 12:3145. [PMID: 37687390 PMCID: PMC10489696 DOI: 10.3390/plants12173145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023]
Abstract
Rice (Oryza sativa L.) is a very important cereal worldwide, since it is the staple food for more than half of the world's population. Iron (Fe) deficiency is among the most important agronomical concerns in calcareous soils where rice plants may suffer from this deficiency. Current production systems are based on the use of high-yielding varieties and the application of large quantities of agrochemicals, which can cause major environmental problems. The use of beneficial rhizosphere microorganisms is considered a relevant sustainable alternative to synthetic fertilizers. The main goal of this study was to determine the ability of the nonpathogenic strain Fusarium oxysporum FO12 to induce Fe-deficiency responses in rice plants and its effects on plant growth and Fe chlorosis. Experiments were carried out under hydroponic system conditions. Our results show that the root inoculation of rice plants with FO12 promotes the production of phytosiderophores and plant growth while reducing Fe chlorosis symptoms after several days of cultivation. Moreover, Fe-related genes are upregulated by FO12 at certain times in inoculated plants regardless of Fe conditions. This microorganism also colonizes root cortical tissues. In conclusion, FO12 enhances Fe-deficiency responses in rice plants, achieves growth promotion, and reduces Fe chlorosis symptoms.
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Affiliation(s)
- Jorge Núñez-Cano
- Departamento de Agronomía (Unit of Excellence ‘María de Maeztu’ 2020-24), Edificio Celestino Mutis (C-4), Campus de Excelencia Internacional Agroalimentario de Rabanales (ceiA3), Universidad de Córdoba, 14071 Córdoba, Spain; (J.N.-C.); (F.J.R.); (M.J.G.); (J.S.-C.); (C.A.-B.)
| | - Francisco J. Romera
- Departamento de Agronomía (Unit of Excellence ‘María de Maeztu’ 2020-24), Edificio Celestino Mutis (C-4), Campus de Excelencia Internacional Agroalimentario de Rabanales (ceiA3), Universidad de Córdoba, 14071 Córdoba, Spain; (J.N.-C.); (F.J.R.); (M.J.G.); (J.S.-C.); (C.A.-B.)
| | - Pilar Prieto
- Departamento de Mejora Genética, Instituto de Agricultura Sostenible (IAS), Consejo Superior de Investigaciones Científicas (CSIC), 14004 Córdoba, Spain;
| | - María J. García
- Departamento de Agronomía (Unit of Excellence ‘María de Maeztu’ 2020-24), Edificio Celestino Mutis (C-4), Campus de Excelencia Internacional Agroalimentario de Rabanales (ceiA3), Universidad de Córdoba, 14071 Córdoba, Spain; (J.N.-C.); (F.J.R.); (M.J.G.); (J.S.-C.); (C.A.-B.)
| | - Jesús Sevillano-Caño
- Departamento de Agronomía (Unit of Excellence ‘María de Maeztu’ 2020-24), Edificio Celestino Mutis (C-4), Campus de Excelencia Internacional Agroalimentario de Rabanales (ceiA3), Universidad de Córdoba, 14071 Córdoba, Spain; (J.N.-C.); (F.J.R.); (M.J.G.); (J.S.-C.); (C.A.-B.)
| | - Carlos Agustí-Brisach
- Departamento de Agronomía (Unit of Excellence ‘María de Maeztu’ 2020-24), Edificio Celestino Mutis (C-4), Campus de Excelencia Internacional Agroalimentario de Rabanales (ceiA3), Universidad de Córdoba, 14071 Córdoba, Spain; (J.N.-C.); (F.J.R.); (M.J.G.); (J.S.-C.); (C.A.-B.)
| | - Rafael Pérez-Vicente
- Departamento de Botánica, Ecología y Fisiología Vegetal, Edificio Celestino Mutis (C-4), Campus de Excelencia Internacional Agroalimentario de Rabanales (ceiA3), Universidad de Córdoba, 14071 Córdoba, Spain;
| | - José Ramos
- Departamento de Química Agrícola, Edafología y Microbiología, Edificio Severo Ochoa (C-6), Campus de Excelencia Internacional Agroalimentario de Rabanales (ceiA3), Universidad de Córdoba, 14071 Córdoba, Spain;
| | - Carlos Lucena
- Departamento de Agronomía (Unit of Excellence ‘María de Maeztu’ 2020-24), Edificio Celestino Mutis (C-4), Campus de Excelencia Internacional Agroalimentario de Rabanales (ceiA3), Universidad de Córdoba, 14071 Córdoba, Spain; (J.N.-C.); (F.J.R.); (M.J.G.); (J.S.-C.); (C.A.-B.)
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Khourchi S, Elhaissoufi W, Ibnyasser A, Haddine M, Ghani R, Zeroual Y, Delaplace P, Bargaz A. Integrated use of polyphosphate and P-solubilizing bacteria enhanced P use efficiency and growth performance of durum wheat. Front Microbiol 2023; 14:1211397. [PMID: 37476670 PMCID: PMC10354339 DOI: 10.3389/fmicb.2023.1211397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 06/15/2023] [Indexed: 07/22/2023] Open
Abstract
Coupling phosphate-solubilizing bacteria (PSB) with P fertilizers, including polyphosphates (PolyP), was reported as eco-efficient approach to enhance P use efficiency. Although PSB have been recently reported to hydrolyze PolyP, the plant growth promoting mechanisms of PolyP-PSB co-application were not yet uncovered. This study aims to evaluate the effect of a PSB consortium (PSBCs) on growth, P use efficiency (PUE), and wheat yield parameters under PolyP (PolyB) application. Co-application of PolyB-PSBCs significantly enhanced wheat growth at 75 days after sowing (DAS) compared to 30 DAS. A significant increase in shoot dry biomass (47%), shoot inorganic P content (222%), PUE (91%), and root P absorption efficiency (RPAE, 99%) was noted compared to unfertilized plants. Similarly, the PolyB-PSBCs co-application enhanced morphological root traits at 30 DAS, while acid phosphatase activities (root and rhizosphere), RPAE, and PUE were significantly increased at 75 DAS. The improved wheat P acquisition could be attributed to a lower investment in root biomass production, and significant induction of acid phosphatase activity in roots and rhizosphere soil under PolyB-PSBCs co-application. Consequently, the PolyB-PSBCs co-application significantly improved aboveground performance, which is reflected by increased shoot nutrient contents (P 300%, K 65%), dry weight (54%), and number (50%) of spikes. Altogether, this study provides relevant evidence that co-application of PolyP-PSBCs can be an integrated and environmentally preferred P fertilization approach owing to the dual effects of PolyP and PSBCs on wheat PUE.
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Affiliation(s)
- Said Khourchi
- Agrobiosciences Program, College for Sustainable Agriculture and Environmental Sciences, , Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
- TERRA – Teaching and Research Center, Plant Sciences, Gembloux Agro-Bio Tech, Université de Liège, Gembloux, Belgium
| | - Wissal Elhaissoufi
- Agrobiosciences Program, College for Sustainable Agriculture and Environmental Sciences, , Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
| | - Ammar Ibnyasser
- Agrobiosciences Program, College for Sustainable Agriculture and Environmental Sciences, , Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
| | - Meryem Haddine
- Agrobiosciences Program, College for Sustainable Agriculture and Environmental Sciences, , Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
| | - Rachid Ghani
- Agrobiosciences Program, College for Sustainable Agriculture and Environmental Sciences, , Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
| | - Youssef Zeroual
- Situation Innovation, OCP Group, Jorf Lasfar, El Jadida, Morocco
| | - Pierre Delaplace
- TERRA – Teaching and Research Center, Plant Sciences, Gembloux Agro-Bio Tech, Université de Liège, Gembloux, Belgium
| | - Adnane Bargaz
- Agrobiosciences Program, College for Sustainable Agriculture and Environmental Sciences, , Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
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Genetic approaches for assessment of phosphorus use efficiency in groundnut (Arachis hypogaea L.). Sci Rep 2022; 12:21552. [PMID: 36513706 PMCID: PMC9747966 DOI: 10.1038/s41598-022-24016-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 11/08/2022] [Indexed: 12/15/2022] Open
Abstract
Production of phosphorus efficient genotypes in groundnut can improve and also reduces environmental pollution. Identification of P-efficient groundnut genotypes is a need of the hour to sustain in P-deficient soils. The pot experiment showed significant differences between genotypes (G) and treatments (T) for all the traits and G × T interaction for majority of traits. The G × T × Y interaction effects were also significant for all the traits except leaf P% (LP%), leaf acid phosphatase (LAP) and root dry weight (RDW). In lysimeter experiment, the effect of G, T and G × T were significant for leaf dry weight (LDW), stem dry weight (SDW), total transpiration (TT) and transpiration efficiency (TE). For traits, LDW, SDW, TT, TE, ICGV 00351 and ICGS 76; for SDW, TT, ICGV 02266 are best performers under both P-sufficient and deficient conditions. Based on P-efficiency indices and surrogate traits of P-uptake, ICGV's 02266, 05155, 00308, 06040 and 06146 were considered as efficient P-responding genotypes. From GGE biplot, ICGV 06146 under P-deficient and TAG 24 under both P-sufficient and deficient conditions are portrayed as best performer. ICGV 06146 was identified as stable pod yielder and a promising genotype for P-deficient soils. The genotypes identified in this study can be used as a parent in developing mapping population to decipher the genetics and to devleop groundnut breeding lines suitable to P-deficient soils.
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12
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Ebbisa A. Mechanisms underlying cereal/legume intercropping as nature-based biofortification: A review. FOOD PRODUCTION, PROCESSING AND NUTRITION 2022. [DOI: 10.1186/s43014-022-00096-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
AbstractThe deficiencies of micronutrients known as hidden hunger are severely affecting more than one-half of the world’s population, which is highly related to low bioavailability of micronutrients, poor quality diets, and consumption of cereal-based foods in developing countries. Although numerous experiments proved biofortification as a paramount approach for improving hidden hunger around the world, its effectiveness is highly related to various soil factors, climate conditions, and the adoption rates of biofortified crops. Furthermore, agronomic biofortification may result in the sedimentation of heavy metals in the soil that pose another detrimental effect on plants and human health. In response to these challenges, several studies suggested intercropping as one of the feasible, eco-friendly, low-cost, and short-term approaches for improving the nutritional quality and yield of crops sustainable way. Besides, it is the cornerstone of climate-smart agriculture and the holistic solution for the most vulnerable area to solve malnutrition that disturbs human healthy catastrophically. Nevertheless, there is meager information on mechanisms and processes related to soil-plant interspecific interactions that lead to an increment of nutrients bioavailability to tackle the crisis of micronutrient deficiency in a nature-based solution. In this regard, this review tempted to (1) explore mechanisms and processes that can favor the bioavailability of Zn, Fe, P, etc. in soil and edible parts of crops, (2) synthesize available information on the benefits and synergic role of the intercropping system in food and nutritional security, and (3) outline the bottlenecks influencing the effectiveness of biofortification for promoting sustainable agriculture in sub-Saharan Africa (SSA). Based on this review SSA countries are malnourished due to limited access to diverse diets, supplementation, and commercially fortified food; hence, I suggest integrated research by agronomists, plant nutritionists, and agroecologist to intensify and utilize intercropping systems as biofortification sustainably alleviating micronutrient deficiencies.
Graphical Abstract
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13
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Gong H, Guo Y, Wu J, Wu H, Nkebiwe PM, Pu Z, Feng G, Jiao X. Synergies in sustainable phosphorus use and greenhouse gas emissions mitigation in China: Perspectives from the entire supply chain from fertilizer production to agricultural use. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:155997. [PMID: 35588830 DOI: 10.1016/j.scitotenv.2022.155997] [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: 03/02/2022] [Revised: 04/28/2022] [Accepted: 05/12/2022] [Indexed: 06/15/2023]
Abstract
Synergies to achieve high phosphorus (P) use efficiency (PUE) and mitigate greenhouse gas (GHG) emissions are critical for developing strategies aimed toward agricultural green development. However, the potential effects of such synergies in the entire P supply chain through optimizing P management in crop production are poorly understood. In this study, a partial life cycle of a GHG emissions model was developed to quantify the P-related GHG emissions in the entire P supply chain in China. Our results showed that 16.3 kg CO2-equivalent (CO2-eq) was produced from the entire P supply chain per unit of P used for grain agriculture (maize, rice, and wheat). P-related GHG emissions in China increased more than five-fold from 1980 (7.2 Tg CO2-eq) to 2018 (44.9 Tg CO2-eq). GHG emissions were found to be strongly associated with the intensity of grain production in China, and they varied considerably across production regions owing to the differences in the P fertilizer production efficiency. Mineral P fertilizer use in crop production was the primary source of P-related GHG emissions. The results suggest that sustainable P management by matching mineral P fertilizer rates and fertilizer types with crop needs can mitigate GHG emissions by 10.8-27.7 Tg (24.0-65.1%). Moreover, this can improve PUE and reduce mineral P input by 0.7-1.4 Tg (24.0-46.0%). These findings highlight that potential synergies between high PUE and low P-related GHG emissions can be achieved via sustainable P management, thereby enhancing green agricultural development in China and other regions worldwide.
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Affiliation(s)
- Haiqing Gong
- National Academy of Agriculture Green Development, Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, 100193 Beijing, China
| | - Yu Guo
- National Academy of Agriculture Green Development, Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, 100193 Beijing, China
| | - Jiechen Wu
- Department of Sustainable Development, Environmental Science and Engineering (SEED), KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Huijun Wu
- School of Earth and Environment, Anhui University of Science and Technology, 232001 Huainan, China
| | - Peteh Mehdi Nkebiwe
- Department of Fertilization and Soil Matter Dynamics, Institute of Crop Science, University of Hohenheim, 70599 Stuttgart, Germany
| | - Zhengxian Pu
- Yunnan Yuntianhua Co., Ltd., 650228, Yunnan, China
| | - Gu Feng
- National Academy of Agriculture Green Development, Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, 100193 Beijing, China
| | - Xiaoqiang Jiao
- National Academy of Agriculture Green Development, Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, 100193 Beijing, China.
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14
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What Is the Operation Logic of Cultivated Land Protection Policies in China? A Grounded Theory Analysis. SUSTAINABILITY 2022. [DOI: 10.3390/su14148887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cultivated land protection policies (CLPP) are essential for maintaining social stability, guaranteeing food security, and ensuring sustainable development. However, a mismatch exists between policy performance and the objectives that influence the implementation of CLPP, and the system mechanisms of CLPP must be revealed and explored. Based on the literature review, this paper summarizes the current dilemmas of China’s cultivated land protection at the theoretical level, and preliminarily depicts the external foundation of CLPP in view of China’s topography and spatial distribution of cultivated land. This paper uses CLPP texts as research samples based on grounded theory to construct an analytical framework. The results show that the operation logic of the CLPP is founded on situation–structure–motivation–action–space–outcome. Accordingly, systematic analysis and in-depth understanding of the operation logic of CLPP will help to re-examine the profound relationship between policy text and implementation effect from such perspectives as transnational, trans-regional, and multi-scale. It also helps to reveal the hidden scientific value of spatiotemporal pattern for cultivated land protection, and serve the formulation and implementation of relevant policies in the future. Under the background of the new era of ecological civilization, it is urgent to enhance the operational effectiveness of the CLPP, identifying the focus of policy implementation, and scientifically formulating the CLPP is of great significance to its success.
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Oliveira JG, Luiz Santana Júnior M, Jaqueline Costa Maia N, Batista Dubeux Junior JC, Hauber Gameiro A, Kunrath TR, Geraldi Mendonça G, Fernanda Simili F. Nitrogen balance and efficiency as indicators for monitoring the proper use of fertilizers in agricultural and livestock systems. Sci Rep 2022; 12:12021. [PMID: 35835795 PMCID: PMC9283529 DOI: 10.1038/s41598-022-15615-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 06/27/2022] [Indexed: 11/14/2022] Open
Abstract
The rational use of nutrients is a key factor for the sustainability of agricultural systems. This study aimed to analyze the nitrogen balance and use efficiency, and the valorization of organic residues within integrated systems, in comparison to conventional agricultural and livestock systems. The experiment was assembled in a randomized blocks design with three replicates. Six production systems were compared, grain maize production (CROP) and pasture for beef cattle production (LS), and four ICLS (Integrated Crop-Livestock System) for grain maize and pastures for beef cattle, in 2 years. In order to estimate the nutrients balance, inputs, and outputs at farm levels were considered, and with the results obtained for nutrient balance, the use efficiency was calculated. The CROP presented higher nutrient use efficiency (1.43 kg/ha−1), but at the same time, it resulted in negative contributions for the nutrient balance (−97 kg/ha−1) because of lower amounts of nitrogen in the organic residues (188 kg/ha−1) and lower valuation. The LS and ICLS provided a higher amount of nitrogen (983 kg/ha−1; mean ± 921 kg/ha−1) and valuation of organic residues. The presence of components such as pastures and the animal contribute to a positive production system, while reducing the needs for chemical fertilizers.
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Affiliation(s)
- Joyce Graziella Oliveira
- Instituto de Zootecnia/APTA/SAA, Ribeirão Preto, SP, 14030-670, Brazil. .,Instituto de Zootecnia/APTA/SAA, Nova Odessa, SP, 13460-000, Brazil.
| | | | - Nayane Jaqueline Costa Maia
- Faculdade de Ciências Agrarias e Veterinárias (FCAV), Universidade do Estado de São Paulo (UNESP), Jaboticabal, SP, 14884-300, Brazil
| | | | - Augusto Hauber Gameiro
- Faculdade de Medicina Veterinária e Zootecnia (FMVZ), Universidade de São Paulo (USP), Pirassununga, SP, 13635-900, Brazil
| | | | - Gabriela Geraldi Mendonça
- Faculdade de Medicina Veterinária e Zootecnia (FMVZ), Universidade de São Paulo (USP), Pirassununga, SP, 13635-900, Brazil
| | - Flávia Fernanda Simili
- Instituto de Zootecnia/APTA/SAA, Ribeirão Preto, SP, 14030-670, Brazil.,Instituto de Zootecnia/APTA/SAA, Nova Odessa, SP, 13460-000, Brazil
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16
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Wang L, Rengel Z, Zhang K, Jin K, Lyu Y, Zhang L, Cheng L, Zhang F, Shen J. Ensuring future food security and resource sustainability: insights into the rhizosphere. iScience 2022; 25:104168. [PMID: 35434553 PMCID: PMC9010633 DOI: 10.1016/j.isci.2022.104168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Feeding the world's growing population requires continuously increasing crop yields with less fertilizers and agrochemicals on limited land. Focusing on plant belowground traits, especially root-soil-microbe interactions, holds a great promise for overcoming this challenge. The belowground root-soil-microbe interactions are complex and involve a range of physical, chemical, and biological processes that influence nutrient-use efficiency, plant growth and health. Understanding, predicting, and manipulating these rhizosphere processes will enable us to harness the relevant interactions to improve plant productivity and nutrient-use efficiency. Here, we review the recent progress and challenges in root-soil-microbe interactions. We also highlight how root-soil-microbe interactions could be manipulated to ensure food security and resource sustainability in a changing global climate, with an emphasis on reducing our dependence on fertilizers and agrochemicals.
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Affiliation(s)
- Liyang Wang
- Department of Plant Nutrition, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, PR China
| | - Zed Rengel
- Soil Science & Plant Nutrition, UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia
- Institute for Adriatic Crops and Karst Reclamation, Split 21000, Croatia
| | - Kai Zhang
- Department of Plant Nutrition, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, PR China
| | - Kemo Jin
- Department of Plant Nutrition, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, PR China
| | - Yang Lyu
- Department of Plant Nutrition, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, PR China
| | - Lin Zhang
- Department of Plant Nutrition, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, PR China
| | - Lingyun Cheng
- Department of Plant Nutrition, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, PR China
| | - Fusuo Zhang
- Department of Plant Nutrition, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, PR China
| | - Jianbo Shen
- Department of Plant Nutrition, College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, PR China
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17
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Sustainability of Vertical Farming in Comparison with Conventional Farming: A Case Study in Miyagi Prefecture, Japan, on Nitrogen and Phosphorus Footprint. SUSTAINABILITY 2022. [DOI: 10.3390/su14021042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The reduced requirement for nutrients in vertical farming (VF) implies that the potential for lower environmental impact is greater in VF than in conventional farming. In this study, the environmental impacts of VF were evaluated based on a case study of VF for vegetables in Miyagi Prefecture in Japan, where VF has been utilized in post-disaster relief operations in the wake of the 2011 Great East Japan Earthquake. The nitrogen (N) and phosphorus (P) footprints of these VFs were determined and analyzed to quantify the potential reduction in N and P emissions. First, the N and P footprints in conventional farming were calculated. Then, those footprints were compared with three different scenarios with different ratios for food imports, which equate to different levels of food self-sufficiency. The results show a decrease in the N and P footprints with increased prefectural self-sufficiency due to the introduction of VF. In addition to reducing the risks to food supply by reducing the dependence on imports and the environmental impacts of agriculture, further analysis reveals that VF is suitable for use in many scenarios around the world to reliably provide food to local communities. Its low vulnerability to natural disasters makes VF well suited to places most at risk from climate change anomalies.
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Boursiac Y, Protto V, Rishmawi L, Maurel C. Experimental and conceptual approaches to root water transport. PLANT AND SOIL 2022; 478:349-370. [PMID: 36277078 PMCID: PMC9579117 DOI: 10.1007/s11104-022-05427-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 04/03/2022] [Indexed: 05/05/2023]
Abstract
BACKGROUND Root water transport, which critically contributes to the plant water status and thereby plant productivity, has been the object of extensive experimental and theoretical studies. However, root systems represent an intricate assembly of cells in complex architectures, including many tissues at distinct developmental stages. Our comprehension of where and how molecular actors integrate their function in order to provide the root with its hydraulic properties is therefore still limited. SCOPE Based on current literature and prospective discussions, this review addresses how root water transport can be experimentally measured, what is known about the underlying molecular actors, and how elementary water transport processes are scaled up in numerical/mathematical models. CONCLUSIONS The theoretical framework and experimental procedures on root water transport that are in use today have been established a few decades ago. However, recent years have seen the appearance of new techniques and models with enhanced resolution, down to a portion of root or to the tissue level. These advances pave the way for a better comprehension of the dynamics of water uptake by roots in the soil.
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Affiliation(s)
- Yann Boursiac
- IPSiM, Univ Montpellier, CNRS, INRAE, Institut Agro, 34060 Montpellier, France
| | - Virginia Protto
- IPSiM, Univ Montpellier, CNRS, INRAE, Institut Agro, 34060 Montpellier, France
| | - Louai Rishmawi
- IPSiM, Univ Montpellier, CNRS, INRAE, Institut Agro, 34060 Montpellier, France
| | - Christophe Maurel
- IPSiM, Univ Montpellier, CNRS, INRAE, Institut Agro, 34060 Montpellier, France
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19
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Lucena C, Alcalá-Jiménez MT, Romera FJ, Ramos J. Several Yeast Species Induce Iron Deficiency Responses in Cucumber Plants ( Cucumis sativus L.). Microorganisms 2021; 9:microorganisms9122603. [PMID: 34946203 PMCID: PMC8704622 DOI: 10.3390/microorganisms9122603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/14/2021] [Accepted: 12/14/2021] [Indexed: 11/16/2022] Open
Abstract
Iron (Fe) deficiency is a first-order agronomic problem that causes a significant decrease in crop yield and quality. Paradoxically, Fe is very abundant in most soils, mainly in its oxidized form, but is poorly soluble and with low availability for plants. In order to alleviate this situation, plants develop different morphological and physiological Fe-deficiency responses, mainly in their roots, to facilitate Fe mobilization and acquisition. Even so, Fe fertilizers, mainly Fe chelates, are widely used in modern agriculture, causing environmental problems and increasing the costs of production, due to the high prices of these products. One of the most sustainable and promising alternatives to the use of agrochemicals is the better management of the rhizosphere and the beneficial microbial communities presented there. The main objective of this research has been to evaluate the ability of several yeast species, such as Debaryomyces hansenii, Saccharomyces cerevisiae and Hansenula polymorpha, to induce Fe-deficiency responses in cucumber plants. To date, there are no studies on the roles played by yeasts on the Fe nutrition of plants. Experiments were carried out with cucumber plants grown in a hydroponic growth system. The effects of the three yeast species on some of the most important Fe-deficiency responses developed by dicot (Strategy I) plants, such as enhanced ferric reductase activity and Fe2+ transport, acidification of the rhizosphere, and proliferation of subapical root hairs, were evaluated. The results obtained show the inductive character of the three yeast species, mainly of Debaryomyces hansenii and Hansenula polymorpha, on the Fe-deficiency responses evaluated in this study. This opens a promising line of study on the use of these microorganisms as Fe biofertilizers in a more sustainable and environmentally friendly agriculture.
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Affiliation(s)
- Carlos Lucena
- Department of Agronomy (DAUCO-María de Maeztu Unit of Excellence), Edificio C-4, Campus de Rabanales CeiA3, Universidad de Córdoba, 14071 Córdoba, Spain; (C.L.); (F.J.R.)
| | - María T. Alcalá-Jiménez
- Department of Agricultural Chemistry, Edaphology and Microbiology, Edificio C-6, Campus de Rabanales CeiA3, Universidad de Córdoba, 14071 Córdoba, Spain;
| | - Francisco J. Romera
- Department of Agronomy (DAUCO-María de Maeztu Unit of Excellence), Edificio C-4, Campus de Rabanales CeiA3, Universidad de Córdoba, 14071 Córdoba, Spain; (C.L.); (F.J.R.)
| | - José Ramos
- Department of Agricultural Chemistry, Edaphology and Microbiology, Edificio C-6, Campus de Rabanales CeiA3, Universidad de Córdoba, 14071 Córdoba, Spain;
- Correspondence:
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20
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Gong H, Kabeto Wako B, Xiang Y, Jiao X. Phosphorus-Use Efficiency Modified by Complementary Effects of P Supply Intensity With Limited Root Growth Space. FRONTIERS IN PLANT SCIENCE 2021; 12:728527. [PMID: 34646288 PMCID: PMC8503601 DOI: 10.3389/fpls.2021.728527] [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: 06/21/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
Space availability and the maintenance of adequate phosphorus (P) supply in the root zone are essential for achieving high yield and P-use efficiency in maize production by manipulating the root morphology and arbuscular mycorrhizal (AM) fungi colonization. A major trade-off exists between root growth and AM colonization that is influenced by soil P supply intensity and space availability. However, how soil P manipulates the root morphological characteristics and AM colonization to compensate for the limitation of root-growth space induced by high-planting density is not clear. Therefore, pot experiments were conducted to investigate interactions between the root growth and AM fungi by optimizing soil P supply to compensate for limited root growth space induced by high-planting density. Similar shoot biomass and P uptake values were obtained in P200 (200 mg P kg-1 soil) under D = 40 (i.e., diameter of the pot is 40 cm) and P400 under D = 30, and similar values were obtained for root length, tap root length, root angle, lateral root density, and AM colonization. However, the improvement in P supply in the root zone, shoot biomass, and P uptake in P400 under D = 20 were lower than in P200 under D = 30, and there were no significant differences in the root parameters between P200 and P400 under D = 20; similarly, the root growth and AM colonization exhibited similar trends. These results suggest that optimizing P supply in the root zone to regulate the interaction between root morphological traits and AM colonization can compensate for limited root-growth space. Although P supply in the root zone increased after the root-growth space was compressed, it could not meet the P demand of maize; thus, to achieve the most efficient use of P under intensive high-density maize production, it is necessary to optimally coordinate root growth space and P supply in the root zone.
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Affiliation(s)
| | | | | | - Xiaoqiang Jiao
- Department of Plant Nutrition, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing, China
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21
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Wang L, Li X, Mang M, Ludewig U, Shen J. Heterogeneous nutrient supply promotes maize growth and phosphorus acquisition: additive and compensatory effects of lateral roots and root hairs. ANNALS OF BOTANY 2021; 128:431-440. [PMID: 34309655 PMCID: PMC8414595 DOI: 10.1093/aob/mcab097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/25/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND AND AIMS Root proliferation is a response to a heterogeneous nutrient distribution. However, the growth of root hairs in response to heterogeneous nutrients and the relationship between root hairs and lateral roots remain unclear. This study aims to understand the effects of heterogeneous nutrients on root hair growth and the trade-off between root hairs and lateral roots in phosphorus (P) acquisition. METHODS Near-isogenic maize lines, the B73 wild type (WT) and the rth3 root hairless mutant, were grown in rhizoboxes with uniform or localized supply of 40 (low) or 140 (high) mg P kg-1 soil. RESULTS Both WT and rth3 had nearly two-fold greater shoot biomass and P content under local than uniform treatment at low P. Significant root proliferation was observed in both WT and rth3 in the nutrient patch, with the WT accompanied by an obvious increase (from 0.7 to 1.2 mm) in root hair length. The root response ratio of rth3 was greater than that of WT at low P, but could not completely compensate for the loss of root hairs. This suggests that plants enhanced P acquisition through complementarity between lateral roots and root hairs, and thus regulated nutrient foraging and shoot growth. The disappearance of WT and rth3 root response differences at high P indicated that the P application reduced the dependence of the plants on specific root traits to obtain nutrients. CONCLUSIONS In addition to root proliferation, the root response to a nutrient-rich patch was also accompanied by root hair elongation. The genotypes without root hairs increased their investment in lateral roots in a nutrient-rich patch to compensate for the absence of root hairs, suggesting that plants enhanced nutrient acquisition by regulating the trade-off of complementary root traits.
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Affiliation(s)
- Liyang Wang
- Department of Plant Nutrition, College of Resources and Environmental Sciences, Center for Resources, Environment and Food Security, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, PR China
- Department of Nutritional Crop Physiology, Institute of Crop Sciences (340h), University of Hohenheim, Stuttgart 70593, Germany
| | - Xuelian Li
- Department of Nutritional Crop Physiology, Institute of Crop Sciences (340h), University of Hohenheim, Stuttgart 70593, Germany
| | - Melissa Mang
- Department of Nutritional Crop Physiology, Institute of Crop Sciences (340h), University of Hohenheim, Stuttgart 70593, Germany
| | - Uwe Ludewig
- Department of Nutritional Crop Physiology, Institute of Crop Sciences (340h), University of Hohenheim, Stuttgart 70593, Germany
| | - Jianbo Shen
- Department of Plant Nutrition, College of Resources and Environmental Sciences, Center for Resources, Environment and Food Security, Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, PR China
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22
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Fiaz S, Wang X, Khan SA, Ahmar S, Noor MA, Riaz A, Ali K, Abbas F, Mora-Poblete F, Figueroa CR, Alharthi B. Novel plant breeding techniques to advance nitrogen use efficiency in rice: A review. GM CROPS & FOOD 2021; 12:627-646. [PMID: 34034628 PMCID: PMC9208628 DOI: 10.1080/21645698.2021.1921545] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Recently, there has been a remarkable increase in rice production owing to genetic improvement and increase in application of synthetic fertilizers. For sustainable agriculture, there is dire need to maintain a balance between profitability and input cost. To meet the steady growing demands of the farming community, researchers are utilizing all available resources to identify nutrient use efficient germplasm, but with very little success. Therefore, it is essential to understand the underlying genetic mechanism controlling nutrients efficiency, with the nitrogen use efficiency (NUE) being the most important trait. Information regarding genetic factors controlling nitrogen (N) transporters, assimilators, and remobilizers can help to identify candidate germplasms via high-throughput technologies. Large-scale field trials have provided morphological, physiological, and biochemical trait data for the detection of genomic regions controlling NUE. The functional aspects of these attributes are time-consuming, costly, labor-intensive, and less accurate. Therefore, the application of novel plant breeding techniques (NPBTs) with context to genome engineering has opened new avenues of research for crop improvement programs. Most recently, genome editing technologies (GETs) have undergone enormous development with various versions from Cas9, Cpf1, base, and prime editing. These GETs have been vigorously adapted in plant sciences for novel trait development to insure food quantity and quality. Base editing has been successfully applied to improve NUE in rice, demonstrating the potential of GETs to develop germplasms with improved resource use efficiency. NPBTs continue to face regulatory setbacks in some countries due to genome editing being categorized in the same category as genetically modified (GM) crops. Therefore, it is essential to involve all stakeholders in a detailed discussion on NPBTs and to formulate uniform policies tackling biosafety, social, ethical, and environmental concerns. In the current review, we have discussed the genetic mechanism of NUE and NPBTs for crop improvement programs with proof of concepts, transgenic and GET application for the development of NUE germplasms, and regulatory aspects of genome edited crops with future directions considering NUE.
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Affiliation(s)
- Sajid Fiaz
- Department of Plant Breeding and Genetics, The University of Haripur 22620, Khyber, Pakhtunkhwa, Pakistan
| | - Xiukang Wang
- College of Life Sciences, Yan'an University, Yan'an, Shaanxi, China
| | - Sher Aslam Khan
- Department of Plant Breeding and Genetics, The University of Haripur 22620, Khyber, Pakhtunkhwa, Pakistan
| | - Sunny Ahmar
- Institute of Biological Sciences, Campus Talca, Universidad deTalca, Talca, Chile
| | - Mehmood Ali Noor
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture, Beijing, China
| | - Aamir Riaz
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, China
| | - Kazim Ali
- National Institute for Genomics and Advanced Biotechnology, National Agricultural Research Centre, Islamabad, Pakistan
| | - Farhat Abbas
- Research Center for Ornamental Plants, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Freddy Mora-Poblete
- Institute of Biological Sciences, Campus Talca, Universidad deTalca, Talca, Chile
| | - Carlos R Figueroa
- Institute of Biological Sciences, Campus Talca, Universidad deTalca, Talca, Chile
| | - Badr Alharthi
- College of Khurma, Taif University, Taif, Saudi Arabia.,College of Science and Engineering, Flinders University, Adelaide, South Australia
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Farooq TH, Kumar U, Mo J, Shakoor A, Wang J, Rashid MHU, Tufail MA, Chen X, Yan W. Intercropping of Peanut-Tea Enhances Soil Enzymatic Activity and Soil Nutrient Status at Different Soil Profiles in Subtropical Southern China. PLANTS 2021; 10:plants10050881. [PMID: 33925476 PMCID: PMC8145338 DOI: 10.3390/plants10050881] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/19/2021] [Accepted: 04/23/2021] [Indexed: 01/23/2023]
Abstract
Intercropping is one of the most widely used agroforestry techniques, reducing the harmful impacts of external inputs such as fertilizers. It also controls soil erosion, increases soil nutrients availability, and reduces weed growth. In this study, the intercropping of peanut (Arachishypogaea L.) was done with tea plants (Camellia oleifera), and it was compared with the mono-cropping of tea and peanut. Soil health and fertility were examined by analyzing the variability in soil enzymatic activity and soil nutrients availability at different soil depths (0-10 cm, 10-20 cm, 20-30 cm, and 30-40 cm). Results showed that the peanut-tea intercropping considerably impacted the soil organic carbon (SOC), soil nutrient availability, and soil enzymatic responses at different soil depths. The activity of protease, sucrase, and acid phosphatase was higher in intercropping, while the activity of urease and catalase was higher in peanut monoculture. In intercropping, total phosphorus (TP) was 14.2%, 34.2%, 77.7%, 61.9%; total potassium (TK) was 13.4%, 20%, 27.4%, 20%; available phosphorus (AP) was 52.9%, 26.56%, 61.1%; 146.15% and available potassium (AK) was 11.1%, 43.06%, 46.79% higher than the mono-cropping of tea in respective soil layers. Additionally, available nitrogen (AN) was 51.78%, 5.92%, and 15.32% lower in the 10-20 cm, 20-30 cm, and 30-40 cm layers of the intercropping system than in the mono-cropping system of peanut. Moreover, the soil enzymatic activity was significantly correlated with SOC and total nitrogen (TN) content across all soil depths and cropping systems. The depth and path analysis effect revealed that SOC directly affected sucrase, protease, urease, and catalase enzymes in an intercropping system. It was concluded that an increase in the soil enzymatic activity in the intercropping pattern improved the reaction rate at which organic matter decomposed and released nutrients into the soil environment. Enzyme activity in the decomposition process plays a vital role in forest soil morphology and function. For efficient land use in the cropping system, it is necessary to develop coherent agroforestry practices. The results in this study revealed that intercropping certainly enhance soil nutrients status and positively impacts soil conservation.
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Affiliation(s)
- Taimoor Hassan Farooq
- National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Central South University of Forestry and Technology, Changsha 410004, China; (T.H.F.); (J.M.); (J.W.)
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Uttam Kumar
- Institute of Applied Ecology, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
| | - Jing Mo
- National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Central South University of Forestry and Technology, Changsha 410004, China; (T.H.F.); (J.M.); (J.W.)
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Awais Shakoor
- Department of Environment and Soil Sciences, University of Lleida, Avinguda Alcalde Rovira Roure 191, 25198 Lleida, Spain;
| | - Jun Wang
- National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Central South University of Forestry and Technology, Changsha 410004, China; (T.H.F.); (J.M.); (J.W.)
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | | | - Muhammad Aammar Tufail
- Department of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano 77, 38123 Trento, Italy;
| | - Xiaoyong Chen
- National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Central South University of Forestry and Technology, Changsha 410004, China; (T.H.F.); (J.M.); (J.W.)
- College of Arts and Sciences, Governors State University, University Park, IL 60484, USA
- Correspondence: (X.C.); (W.Y.)
| | - Wende Yan
- National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Central South University of Forestry and Technology, Changsha 410004, China; (T.H.F.); (J.M.); (J.W.)
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
- Correspondence: (X.C.); (W.Y.)
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24
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Jiang W, Zhu A, Wang C, Zhang F, Jiao X. Optimizing wheat production and reducing environmental impacts through scientist-farmer engagement: Lessons from the North China Plain. Food Energy Secur 2021; 10:e255. [PMID: 33791100 PMCID: PMC7988609 DOI: 10.1002/fes3.255] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 09/10/2020] [Accepted: 09/29/2020] [Indexed: 11/30/2022] Open
Abstract
Producing high economic benefits and high grain yields with limited environmental impacts is crucial for feeding the world's growing population. Yet it remains challenging to improve the performance of one objective without creating unintended consequences for other objectives. This is especially difficult for smallholders navigating a diverse array of environmental and personal demands. This study demonstrates how combining participatory research through the Science and Technology Backyards (STB) approach with Pareto-based ranking modeling can increase smallholder production while also reducing environmental impact. Through an intensive farmer survey in a 1 × 1 km grid in Quzhou County, we demonstrate that farmers engaged in STBs performed better according to multiple objectives (i.e., optimizing overall grain yield, benefit-cost ratio, and GHG emissions, without compromising any one of these objectives) than farmer's not engaged in STBs. Moreover, we used a Pareto optimization approach (OPT) to determine the optimal smallholder scenario. We found that under OPT, grain yield could reach 9.5 t/ha, with a benefit-cost ratio of 2.1, a 100% N recovery efficiency, and 7,395 kg CO2eq ha-1 GHG emissions. With OPT as a final goal, our research team worked with STB farmers to improve economic and environmental outcomes without compromising yield. Our findings demonstrate that no significant difference was obtained between farmers engaged in STBs and these under OPT. Compared with non-STB farmers, STB farmers' grain yield improved by 18%, benefit-cost ratio improved by 26% due to improved N recovery efficiency, and GHG emissions were reduced by 31%. These improvements demonstrate the power of scientist-farmer engagement for optimizing wheat production. Such engagement allows farmers to modify their agronomic practices to more closely match Pareto optimal conditions, thus improving environmental and economic benefits without compromising yield. Our results provide solid evidence of the potential for sustainable wheat production by combining modeling with participatory research.
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Affiliation(s)
- Wei Jiang
- National Academy of Agriculture Green DevelopmentDepartment of Plant Nutrition, College of Resources and Environmental SciencesChina Agricultural UniversityBeijing100193China
| | - Annah Zhu
- Environmental Policy groupWageningen UniversityWageningenNetherlands
| | - Chong Wang
- National Academy of Agriculture Green DevelopmentDepartment of Plant Nutrition, College of Resources and Environmental SciencesChina Agricultural UniversityBeijing100193China
| | - Fusuo Zhang
- National Academy of Agriculture Green DevelopmentDepartment of Plant Nutrition, College of Resources and Environmental SciencesChina Agricultural UniversityBeijing100193China
| | - Xiaoqiang Jiao
- National Academy of Agriculture Green DevelopmentDepartment of Plant Nutrition, College of Resources and Environmental SciencesChina Agricultural UniversityBeijing100193China
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Yang Z, Zhou B, Ge X, Cao Y, Brunner I, Shi J, Li MH. Species-Specific Responses of Root Morphology of Three Co-existing Tree Species to Nutrient Patches Reflect Their Root Foraging Strategies. FRONTIERS IN PLANT SCIENCE 2021; 11:618222. [PMID: 33569072 PMCID: PMC7868422 DOI: 10.3389/fpls.2020.618222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/30/2020] [Indexed: 06/02/2023]
Abstract
Root foraging strategies of plants may be critical to the competition for nutrient resources in the nutrient patches, but little is known about these of co-existing tree species in subtropical regions. This study aimed to elucidate root foraging strategies of three co-existing tree species in nutrient heterogeneous soils by exploring their root distribution, root morphology, photosynthates allocation and nutrient accumulation. Seedlings of the three tree species [moso bamboo (Phyllostachys edulis), Chinese fir (Cunninghamia lanceolata), and masson pine (Pinus massoniana)] were grown for 8months under one homogeneous soil [uniform nitrogen (N) plus phosphorus (P)] and three heterogeneous soils (localized N supply, localized P supply, or localized N plus P supply). The biomass, root morphological parameters (i.e., root length and root surface area), specific root length (SRL), non-structural carbohydrates (NSCs, i.e., mobile sugar and starch) in roots, total N and total P of plants were measured. The plasticity and distribution of root system were analyzed by calculating the root response ratio (RRR) and root foraging precision (FP), respectively. The results are as follows (i) Chinese fir tended to forage more N by promoting root proliferation in the N-rich patch, while root proliferation of bamboo and pine did not change. For P, bamboo absorbed more P by promoting root proliferation in the P-rich patch. The total P content of Pine and Chinese fir under localized P supply treatment remain the same despite the fact that the root length in the P-rich patch and the FP increased. (ii) Chinese fir foraged more N by increasing root length and decreasing SRL in the NP-rich patch; bamboo foraged more N and P by increasing root length and SRL in the NP-rich patch. The FP and foraging scale (FS) of both bamboo and Chinese fir were significantly improved under localized N plus P treatment. (iii) The concentrations of NSC were positively correlated with root morphological plasticity for moso bamboo and Chinese fir. Our results indicated that higher morphological plasticity is exhibited in moso bamboo and Chinese fir than masson pine in nutrient heterogeneous soils, allowing them to successfully forage for more nutrients.
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Affiliation(s)
- Zhenya Yang
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Bamboo Research, Zhejiang Academy of Forestry, Hangzhou, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration, Hangzhou, China
| | - Benzhi Zhou
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration, Hangzhou, China
| | - Xiaogai Ge
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration, Hangzhou, China
| | - Yonghui Cao
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration, Hangzhou, China
| | - Ivano Brunner
- Forest Soils and Biogeochemistry, Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
| | - Jiuxi Shi
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration, Hangzhou, China
| | - Mai-He Li
- Forest Dynamics, Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
- Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun, China
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26
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Wang X, Whalley WR, Miller AJ, White PJ, Zhang F, Shen J. Sustainable Cropping Requires Adaptation to a Heterogeneous Rhizosphere. TRENDS IN PLANT SCIENCE 2020; 25:1194-1202. [PMID: 32830043 DOI: 10.1016/j.tplants.2020.07.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/02/2020] [Accepted: 07/09/2020] [Indexed: 05/19/2023]
Abstract
Root-soil interactions in the rhizosphere are central to resource acquisition and crop production in agricultural systems. However, apart from studies in idealized experimental systems, rhizosphere processes in real agricultural soils in situ are largely uncharacterized. This limits the contribution of rhizosphere science to agriculture and the ongoing Green Revolution. Here, we argue that understanding plant responses to soil heterogeneity is key to understanding rhizosphere processes. We highlight rhizosphere sensing and root-induced soil modification in the context of heterogeneous soil structure, resource distribution, and root-soil interactions. A deeper understanding of the integrated and dynamic root-soil interactions in the heterogeneously structured rhizosphere could increase crop production and resource use efficiency towards sustainable agriculture.
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Affiliation(s)
- Xin Wang
- Department of Plant Nutrition, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing 100193, PR China
| | | | | | - Philip J White
- Ecological Science Group, The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, UK; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Distinguished Scientist Fellowship Program, King Saud University, Riyadh 11451, Saudi Arabia
| | - Fusuo Zhang
- Department of Plant Nutrition, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing 100193, PR China
| | - Jianbo Shen
- Department of Plant Nutrition, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing 100193, PR China.
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27
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Optimized split nitrogen fertilizer increase photosynthesis, grain yield, nitrogen use efficiency and water use efficiency under water-saving irrigation. Sci Rep 2020; 10:20310. [PMID: 33219232 PMCID: PMC7680147 DOI: 10.1038/s41598-020-75388-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 05/13/2020] [Indexed: 11/17/2022] Open
Abstract
This study aims to investigate optimization of the basal-top-dressing nitrogen ratio for improving winter wheat grain yield, nitrogen use efficiency, water use efficiency and physiological parameters under supplemental irrigation. A water-saving irrigation (SI) regime was established and sufficient irrigation (UI) was used as a control condition. The split-nitrogen regimes used were based on a identical total nitrogen application rate of 240 kg ha−1 but were split in four different proportions between sowing and the jointing stage; i.e. 10:0 (N1), 7:3 (N2), 5:5 (N3) and 3:7 (N4). Compared with the N1, N2 and N4 treatments, N3 treatment increased grain yield, nitrogen and water use efficiencies by 5.27–17.75%, 5.68–18.78% and 5.65–31.02%, respectively, in both years. The yield advantage obtained with the optimized split-nitrogen fertilizer application may be attributable to greater flag leaf photosynthetic capacity and grain-filling capacity. Furthermore, the N3 treatment maintained the highest nitrogen and water use efficiencies. Moreover, we observed that water use efficiency of SI compared with UI increased by 9.75% in 2016 and 10.79% in 2017, respectively. It can be concluded that SI along with a 5:5 basal-top-dressing nitrogen ratio should be considered as an optimal fertigation strategy for both high grain yield and efficiency in winter wheat.
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28
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Wang L, Hou B, Zhang D, Lyu Y, Zhang K, Li H, Rengel Z, Shen J. The niche complementarity driven by rhizosphere interactions enhances phosphorus‐use efficiency in maize/alfalfa mixture. Food Energy Secur 2020. [DOI: 10.1002/fes3.252] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Liyang Wang
- Department of Plant Nutrition College of Resources and Environmental Sciences Center for Resources Environment and Food Security Key Laboratory of Plant‐Soil Interactions Ministry of Education National Academy of Agriculture Green DevelopmentChina Agricultural University Beijing P. R. China
| | - Baicheng Hou
- Department of Plant Nutrition College of Resources and Environmental Sciences Center for Resources Environment and Food Security Key Laboratory of Plant‐Soil Interactions Ministry of Education National Academy of Agriculture Green DevelopmentChina Agricultural University Beijing P. R. China
| | - Deshan Zhang
- Institute of Ecological Environment Protection Research Shanghai Academy of Agricultural SciencesShanghai Key Laboratory of Protected Horticultural TechnologyShanghai Low‐carbon Agricultural Technical Engineering Research Center Shanghai P. R. China
| | - Yang Lyu
- Department of Plant Nutrition College of Resources and Environmental Sciences Center for Resources Environment and Food Security Key Laboratory of Plant‐Soil Interactions Ministry of Education National Academy of Agriculture Green DevelopmentChina Agricultural University Beijing P. R. China
| | - Kai Zhang
- Department of Plant Nutrition College of Resources and Environmental Sciences Center for Resources Environment and Food Security Key Laboratory of Plant‐Soil Interactions Ministry of Education National Academy of Agriculture Green DevelopmentChina Agricultural University Beijing P. R. China
| | - Haigang Li
- College of Grassland, Resources and Environment Inner Mongolia Agricultural University Hohhot P. R. China
| | - Zed Rengel
- Soil Science & Plant Nutrition UWA School of Agriculture and EnvironmentThe University of Western Australia Perth WA Australia
- Institute for Adriatic Crops and Karst Reclamation Split Croatia
| | - Jianbo Shen
- Department of Plant Nutrition College of Resources and Environmental Sciences Center for Resources Environment and Food Security Key Laboratory of Plant‐Soil Interactions Ministry of Education National Academy of Agriculture Green DevelopmentChina Agricultural University Beijing P. R. China
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29
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Multi-Objective Optimization of Smallholder Apple Production: Lessons from the Bohai Bay Region. SUSTAINABILITY 2020. [DOI: 10.3390/su12166496] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Transforming apple production to one with high yield and economic benefit but low environmental impact by improving P-use efficiency is an essential objective in China. However, the potential for multi-objective improvement for smallholders and the corresponding implications for horticultural practices are not fully appreciated. Survey data collected from 99 apple producers in Quzhou County of Bohai Bay Region were analyzed by the Pareto-based multi-objective optimization method to determine the potential of multi-objective improvement in apple production. With current practices, apple yield was 45 t ha−1, and the economic benefit was nearly 83,000 CNY ha−1 but with as much as 344 kg P ha−1 input mainly from chemical fertilizer and manure. P gray water footprint was up to 27,200 m3 ha−1 due to low P-use efficiency. However, Pareto-optimized production, yield, and economic benefit could be improved by 38% and 111%, respectively. With a concurrent improvement in P-use efficiency, P gray water footprint was reduced by 29%. Multi-objective optimization was achieved with integrated horticultural practices. The study indicated that multi-objective optimization could be achieved at a smallholder scale with realistic changes in integrated horticultural practices. These findings serve to improve the understanding of multi-objective optimization for smallholders, identify possible constraints, and contribute to the development of strategies for sustainable apple production.
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30
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Schmidt JE, Poret-Peterson A, Lowry CJ, Gaudin ACM. Has agricultural intensification impacted maize root traits and rhizosphere interactions related to organic N acquisition? AOB PLANTS 2020; 12:plaa026. [PMID: 32665828 PMCID: PMC7333546 DOI: 10.1093/aobpla/plaa026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
Plant-microbe interactions in the rhizosphere influence rates of organic matter mineralization and nutrient cycling that are critical to sustainable agricultural productivity. Agricultural intensification, particularly the introduction of synthetic fertilizer in the USA, altered the abundance and dominant forms of nitrogen (N), a critical plant nutrient, potentially imposing selection pressure on plant traits and plant-microbe interactions regulating N cycling and acquisition. We hypothesized that maize adaptation to synthetic N fertilization altered root functional traits and rhizosphere microbial nutrient cycling, reducing maize ability to acquire N from organic sources. Six maize genotypes released pre-fertilizer (1936, 1939, 1942) or post-fertilizer (1984, 1994, 2015) were grown in rhizoboxes containing patches of 15N-labelled clover/vetch residue. Multivariate approaches did not identify architectural traits that strongly and consistently predicted rhizosphere processes, though metrics of root morphological plasticity were linked to carbon- and N-cycling enzyme activities. Root traits, potential activities of extracellular enzymes (BG, LAP, NAG, urease), abundances of N-cycling genes (amoA, narG, nirK, nirS, nosZ) and uptake of organic N did not differ between eras of release despite substantial variation among genotypes and replicates. Thus, agricultural intensification does not appear to have impaired N cycling and acquisition from organic sources by modern maize and its rhizobiome. Improved mechanistic understanding of rhizosphere processes and their response to selective pressures will contribute greatly to rhizosphere engineering for sustainable agriculture.
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Affiliation(s)
- Jennifer E Schmidt
- Department of Plant Sciences, University of California at Davis, One Shields Avenue, Davis, CA, USA
| | - Amisha Poret-Peterson
- USDA-ARS Crops Pathology and Genetics Research Unit, University of California, Davis, CA, USA
| | - Carolyn J Lowry
- Department of Natural Resources and the Environment, University of New Hampshire, 46 College Road, Durham, NH, USA
| | - Amélie C M Gaudin
- Department of Plant Sciences, University of California at Davis, One Shields Avenue, Davis, CA, USA
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31
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Effective Placement Methods of Vermicompost Application in Urban Tree Species: Implications for Sustainable Urban Afforestation. SUSTAINABILITY 2020. [DOI: 10.3390/su12145822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Knowledge on growth and nutrient uptake characteristics of urban trees and effective strategies to grow trees can help accomplish the goal of urban afforestation initiatives in a sustainable way. Thus, the study investigated the effects of different vermicompost (VC) application placements on the growth and nutrient uptake of three contrasting tree species (fast-growing Betula platyphylla and Larix kaempferi and slow-growing Chamaecyparis obtusa) to provide implications for growing tree stocks for sustainable urban afforestation programs. Five placement methods were used in the greenhouse trial: no fertilization (CON), surface placement (VCs), subsurface placement at 6-cm depth (VCc), bottom placement (35-cm depth (VCb)), and mixed with soil (VCm). We measured the growth parameters such as height, root collar diameter (RCD), and biomass and analyzed foliar nutrient concentrations in response to different placement treatments of VC. Relative height growth was the highest at VCc (132% (B. platyphylla), 114% (L. kaempferi)) and VCs ((57%) C. obtusa). Significant improvement in aboveground and belowground biomass growth of all species at VCs and VCc compared to the other treatments was also observed. Generally, VC treatments significantly increased N concentration compared to CON in all species. In conclusion, fertilizing the fast- and slow-growing urban tree species using VCs and/or VCc is relevant to growing high quality planting stocks for sustainable urban afforestation purposes.
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32
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Ali H, Ahmad MI. Agronomic efficiency and profitability of cotton on integrated use of phosphorus and plant microbes. BRAZ J BIOL 2020; 81:484-494. [PMID: 32578692 DOI: 10.1590/1519-6984.232940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 04/21/2020] [Indexed: 11/22/2022] Open
Abstract
Cotton crop, plays a significant role in Pakistan's economy by ruling a prominent place in edible oil and local textile industry. Phosphorus (P) inaccessibility and deficiency of soil organic matter are the key restraints for low crop productivity in cotton. Therefore, a two years field study was designed during 2014-15, to explore the influence of phosphate solubilizing bacteria (PSB), farmyard manure (FYM), poultry manure (PM) and inanimate sources of P on various physiological, growth, yield and quality parameters of cotton crop at CCRI Multan. Field responses of seeds inoculated with two distinctive phosphate solubilizing bacteria (PSB) strains viz. S0 = control, S1 =strain-1, S2 = strain-2 and eight organic, inorganic P sources viz., P0= control, P1 = 80 kg ha-1 P from inorganic source, P2 = 80 kg ha-1 P from FYM, P3 = 80 kg ha-1 P from PM, P4 = 40 kg ha-1 P from FYM + 40 kg ha-1 P from inorganic source, P5 = 40 kg ha-1 P from PM + 40 kg ha-1 P from inorganic source, P6 = 80 kg ha-1 P from FYM + 40 kg ha-1 P from inorganic source, P7 = 80 kg ha-1 P from PM + 40 kg ha-1 P from inorganic source and P8 = 40 kg ha-1 P from FYM + 40 kg ha-1 P from PM were evaluated. Results revealed that inoculation of seeds with PSB and collective use of inorganic and organic sources of P had considerably increased the yield contributing attributes in cotton. However, the treatment P7 (80 kg P ha-1 from PM + 40 kg P ha-1 from inorganic source) in coincidence with seeds inoculated with PSB (S1) produced taller plant, maximum boll weight, significantly higher LAI and CGR. Significantly higher seed cotton yield, lint yield, fiber length and maximum BCR of 1.95 and 1.81 was also obtained from the P7 treatment during both crop-growing seasons. In conclusion, combined use of 80 kg P ha-1 from PM + 40 kg P ha-1 from inorganic source and cotton seeds inoculated with strain-1 improved phosphorus uptake ensuing in greater consumption of photo-assimilates for maximum growth and yield.
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Affiliation(s)
- H Ali
- Department of Agronomy, Bahauddin Zakariya University, Multan, Pakistan
| | - M I Ahmad
- Department of Agronomy, Bahauddin Zakariya University, Multan, Pakistan
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Zhang D, Lyu Y, Li H, Tang X, Hu R, Rengel Z, Zhang F, Whalley WR, Davies WJ, Cahill JF, Shen J. Neighbouring plants modify maize root foraging for phosphorus: coupling nutrients and neighbours for improved nutrient-use efficiency. THE NEW PHYTOLOGIST 2020; 226:244-253. [PMID: 31536638 DOI: 10.1111/nph.16206] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 09/03/2019] [Indexed: 05/12/2023]
Abstract
Nutrient distribution and neighbours can impact plant growth, but how neighbours shape root-foraging strategy for nutrients is unclear. Here, we explore new patterns of plant foraging for nutrients as affected by neighbours to improve nutrient acquisition. Maize (Zea mays) was grown alone (maize), or with maize (maize/maize) or faba bean (Vicia faba) (maize/faba bean) as a neighbour on one side and with or without a phosphorus (P)-rich zone on the other in a rhizo-box experiment. Maize demonstrated root avoidance in maize/maize, with reduced root growth in 'shared' soil, and increased growth away from its neighbours. Conversely, maize proliferated roots in the proximity of neighbouring faba bean roots that had greater P availability in the rhizosphere (as a result of citrate and acid phosphatase exudation) compared with maize roots. Maize proliferated more roots, but spent less time to reach, and grow out of, the P patches away from neighbours in the maize/maize than in the maize/faba bean experiment. Maize shoot biomass and P uptake were greater in the heterogeneous P treatment with maize/faba bean than with maize/maize system. The foraging strategy of maize roots is an integrated function of heterogeneous distribution of nutrients and neighbouring plants, thus improving nutrient acquisition and maize growth. Understanding the foraging patterns is critical for optimizing nutrient management in crops.
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Affiliation(s)
- Deshan Zhang
- Department of Plant Nutrition, Key Laboratory of Plant-Soil Interactions, China Agricultural University, Ministry of Education, Beijing, 100193, China
| | - Yang Lyu
- Department of Plant Nutrition, Key Laboratory of Plant-Soil Interactions, China Agricultural University, Ministry of Education, Beijing, 100193, China
| | - Hongbo Li
- Department of Plant Nutrition, Key Laboratory of Plant-Soil Interactions, China Agricultural University, Ministry of Education, Beijing, 100193, China
| | - Xiaoyan Tang
- Department of Plant Nutrition, Key Laboratory of Plant-Soil Interactions, China Agricultural University, Ministry of Education, Beijing, 100193, China
| | - Ran Hu
- Department of Plant Nutrition, Key Laboratory of Plant-Soil Interactions, China Agricultural University, Ministry of Education, Beijing, 100193, China
| | - Zed Rengel
- Soil Science & Plant Nutrition, UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA, 6009, Australia
| | - Fusuo Zhang
- Department of Plant Nutrition, Key Laboratory of Plant-Soil Interactions, China Agricultural University, Ministry of Education, Beijing, 100193, China
| | - William R Whalley
- Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - William J Davies
- Lancaster Environment Centre, University of Lancaster, Lancaster, LA1 4YQ, UK
| | - James F Cahill
- Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E9, Canada
| | - Jianbo Shen
- Department of Plant Nutrition, Key Laboratory of Plant-Soil Interactions, China Agricultural University, Ministry of Education, Beijing, 100193, China
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Liao L, Dong T, Qiu X, Rong Y, Wang Z, Zhu J. Nitrogen nutrition is a key modulator of the sugar and organic acid content in citrus fruit. PLoS One 2019; 14:e0223356. [PMID: 31600253 PMCID: PMC6786551 DOI: 10.1371/journal.pone.0223356] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 09/17/2019] [Indexed: 12/20/2022] Open
Abstract
'Huangguogan' (Citrus reticulata × C. sinensis) is a new cultivar of mandarin citrus in China, and the research on fertilization of 'Huangguogan' is very limited. In this study, the effect of N fertilization on 'Huangguogan' fruit quality was determined at ripening. Sugars (sucrose, fructose, and glucose), organic acids (pyruvic, oxalic, citric acid, etc.), and vitamin components were measured at six stages of fruit development, and eight enzymes related to the glycolytic and Krebs cycle were assessed. The 1.81 kg N y-1 treatment group showed the highest total soluble solids concentration and total soluble solids/titratable acidity ratio but the lowest titratable acidity (acid content) at ripening, while the N1 treatment (0 kg N y-1) showed the opposite trend. Sucrose and citric acid accumulated to the largest extent during fruit development. Sucrose and ascorbic acid content increased (8.46 to 50.97 mg g-1 and 8.16 to 27.39 mg g-1, respectively), while citric acid content decreased (90.81 to 0.02 mg g-1). Aconitase was the key enzyme responsible for the observed changes in citric acid. The N concentrations in ripening fruit ranged from 2.25% to 4.15%. Curve estimation and principal component analysis revealed that fruit N was positively correlated with the sugars and vitamin components and negatively correlated with the organic acids. The accumulation of these metabolites seemed closely related to the dynamic changes in fruit N concentration at the five N levels tested. In conclusion, we suggest that the 1.81 kg N y-1 treatment represents the most suitable N fertilizer treatment for 'Huangguogan' citrus fruit.
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Affiliation(s)
- Ling Liao
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Tiantian Dong
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Xia Qiu
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Yi Rong
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Zhihui Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
- * E-mail:
| | - Jin Zhu
- Sichuan Provincial Agricultural Department, Chengdu, China
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Zhang D, Li H, Fu Z, Cai S, Xu S, Zhu H, Shen J. Increased planting density of Chinese milk vetch ( Astragalus sinicus) weakens phosphorus uptake advantage by rapeseed ( Brassica napus) in a mixed cropping system. AOB PLANTS 2019; 11:plz033. [PMID: 31285818 PMCID: PMC6605628 DOI: 10.1093/aobpla/plz033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 06/19/2019] [Indexed: 05/31/2023]
Abstract
Neighbouring plants can affect plant growth through altering root morphological and physiological traits, but how exactly root systems respond to neighbouring plants with varied density, determining nutrient uptake and shoot growth is poorly understood. In a pot-based experiment, rapeseed was grown alone (single rapeseed), or mixed with 3, 6, or 15 Chinese milk vetch plants. As controls, monocropped Chinese milk vetch was grown at the same planting density, 3, 6, or 15 plants per pot. Root interaction between rapeseed and Chinese milk vetch facilitated phosphorus (P) uptake in rapeseed grown with 3 plants of Chinese milk vetch. As the planting density of Chinese milk vetch in mixture increased, there was a decrease in citrate concentration and acid phosphatase activity but an increase in the total root length of Chinese milk vetch per pot, resulting in decreases in rapeseed root biomass, total root length and P uptake when rapeseed was grown with 6 or 15 Chinese milk vetch plants relative to rapeseed grown with 3 plants. These results demonstrate that the enhanced nutrient utilization induced by root interaction at low planting densities was eliminated by the increased planting density of the legume species in rapeseed/Chinese milk vetch mixed cropping system, suggesting that root/rhizosphere management through optimizing legume planting density is important for improving crop productivity and nutrient-use efficiency.
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Affiliation(s)
- Deshan Zhang
- Institute of Ecological Environment Protection Research, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai Low-carbon Agricultural Technical Engineering Research Center, Shanghai, China
| | - Hongbo Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zishi Fu
- Institute of Ecological Environment Protection Research, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai Low-carbon Agricultural Technical Engineering Research Center, Shanghai, China
| | - Shumei Cai
- Institute of Ecological Environment Protection Research, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai Low-carbon Agricultural Technical Engineering Research Center, Shanghai, China
| | - Sixin Xu
- Institute of Ecological Environment Protection Research, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai Low-carbon Agricultural Technical Engineering Research Center, Shanghai, China
| | - Haitao Zhu
- Institute of Ecological Environment Protection Research, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai Low-carbon Agricultural Technical Engineering Research Center, Shanghai, China
| | - Jianbo Shen
- Department of Plant Nutrition, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing, China
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Romera FJ, García MJ, Lucena C, Martínez-Medina A, Aparicio MA, Ramos J, Alcántara E, Angulo M, Pérez-Vicente R. Induced Systemic Resistance (ISR) and Fe Deficiency Responses in Dicot Plants. FRONTIERS IN PLANT SCIENCE 2019; 10:287. [PMID: 30915094 PMCID: PMC6421314 DOI: 10.3389/fpls.2019.00287] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 02/21/2019] [Indexed: 05/03/2023]
Abstract
Plants develop responses to abiotic stresses, like Fe deficiency. Similarly, plants also develop responses to cope with biotic stresses provoked by biological agents, like pathogens and insects. Some of these responses are limited to the infested damaged organ, but other responses systemically spread far from the infested organ and affect the whole plant. These latter responses include the Systemic Acquired Resistance (SAR) and the Induced Systemic Resistance (ISR). SAR is induced by pathogens and insects while ISR is mediated by beneficial microbes living in the rhizosphere, like bacteria and fungi. These root-associated mutualistic microbes, besides impacting on plant nutrition and growth, can further boost plant defenses, rendering the entire plant more resistant to pathogens and pests. In the last years, it has been found that ISR-eliciting microbes can induce both physiological and morphological responses to Fe deficiency in dicot plants. These results suggest that the regulation of both ISR and Fe deficiency responses overlap, at least partially. Indeed, several hormones and signaling molecules, like ethylene (ET), auxin, and nitric oxide (NO), and the transcription factor MYB72, emerged as key regulators of both processes. This convergence between ISR and Fe deficiency responses opens the way to the use of ISR-eliciting microbes as Fe biofertilizers as well as biopesticides. This review summarizes the progress in the understanding of the molecular overlap in the regulation of ISR and Fe deficiency responses in dicot plants. Root-associated mutualistic microbes, rhizobacteria and rhizofungi species, known for their ability to induce morphological and/or physiological responses to Fe deficiency in dicot plant species are also reviewed herein.
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Affiliation(s)
- Francisco J. Romera
- Department of Agronomy, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - María J. García
- Department of Botany, Ecology and Plant Physiology, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Carlos Lucena
- Department of Botany, Ecology and Plant Physiology, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Ainhoa Martínez-Medina
- Molecular Interaction Ecology, German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Miguel A. Aparicio
- Department of Microbiology, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - José Ramos
- Department of Microbiology, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Esteban Alcántara
- Department of Agronomy, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Macarena Angulo
- Department of Agronomy, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Rafael Pérez-Vicente
- Department of Botany, Ecology and Plant Physiology, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
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Li J, Liu K, Zhang J, Huang L, Coulter JA, Woodburn T, Li L, Gan Y. Soil-Plant Indices Help Explain Legume Response to Crop Rotation in a Semiarid Environment. FRONTIERS IN PLANT SCIENCE 2018; 9:1488. [PMID: 30524451 PMCID: PMC6262397 DOI: 10.3389/fpls.2018.01488] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 09/25/2018] [Indexed: 06/09/2023]
Abstract
Crop productivity is typically affected by various soil-plant factors systematically as they influence plant photosynthesis, soil fertility, and root systems. However, little is known about how the productivity of legumes is related to crop rotation systems. The objectives of this study were to determine the effect of rotation systems on legume productivity and the relationships among legume productivity and soil-plant factors. Three annual legumes - chickpea (Cicer arietinum L.), pea (Pisum sativum L.), and lentil (Lens culinaris Medikus), were included in various diversified rotation systems and compared with legume monoculture in the 8-year rotation study. Soil N and water conditions, and canopy and root systems were evaluated at the end of 8-year rotation in the semiarid Canadian prairies. Results showed that diversified rotation systems improved leaf greenness by 4%, shoot biomass by 25%, nodule biomass by 44%, and seed yield by 95% for chickpea and pea, but such effects were not found for lentil. Pea monocultures increased root rot severity by threefold compared with diversified rotations, and chickpea monoculture increased shoot rot severity by 23%, root rot severity by 96% and nodule damage by 219%. However, all the legume monocultures improved soil N accumulation by an average 38% compared to diversified systems. Pea and chickpea displayed considerable sensitivity to plant biotic stresses, whereas lentil productivity had a larger dependence on initial soil N content. The 8-year study concludes that the rotational effect on legume productivity varies with legume species, the frequency of a legume appearing in the rotation, and the integration of relevant soil and plant indices.
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Affiliation(s)
- Junxian Li
- Gansu Provincial Key Lab of Arid Land Crop Science, College of Agronomy, Gansu Agricultural University, Lanzhou, China
- Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Swift Current, SK, Canada
| | - Kui Liu
- Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Swift Current, SK, Canada
| | - Jun Zhang
- College of Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Lidong Huang
- Department of Agriculture Resources and Environment, Nanjing University of Information Science and Technology, Nanjing, China
| | - Jeffrey A. Coulter
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN, United States
| | - Trevor Woodburn
- Faculty of Science, Department of Microbiology and Biochemistry, University of Victoria, Victoria, BC, Canada
| | - Lingling Li
- Gansu Provincial Key Lab of Arid Land Crop Science, College of Agronomy, Gansu Agricultural University, Lanzhou, China
| | - Yantai Gan
- Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Swift Current, SK, Canada
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Growth and Distribution of Maize Roots in Response to Nitrogen Accumulation in Soil Profiles after Long-Term Fertilization Management on a Calcareous Soil. SUSTAINABILITY 2018. [DOI: 10.3390/su10114315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The replacement of inorganic fertilizer nitrogen by manure is highlighted to have great potential to maintain crop yield while delivering multiple functions, including the improvement of soil quality. However, information on the dynamics of root distributions in response to chemical fertilizers and manure along the soil profile is still lacking. The aim of this study was to investigate the temporal-spatial root distributions of summer maize (Zea mays L.) from 2013 to 2015 under four treatments (unfertilized control (CK), inorganic fertilizer (NPK), manure + 70% NPK (NPKM), and NPKM + straw (NPKMS)). Root efficiency for shoot N accumulation was increased by 89% in the NPKM treatment compared with the NPK treatment at V12 (the emergence of the twelfth leaf) of 2014. Root growth at 40–60 cm was consistently stimulated after manure and/or straw additions, especially at V12 and R3 (the milk stage) across three years. Root length density (RLD) in the diameter <0.2 mm at 0–20 cm was significantly positively correlated with soil water content and negatively with soil mineral N contents in 2015. The RLD in the diameter >0.4 mm at 20–60 cm, and RLD <0.2 mm, was positively correlated with shoot N uptake in 2015. The root length density was insensitive in response to fertilization treatments, but the variations in RLD along the soil profile in response to fertilization implies that there is a great potential to manipulate N supply levels and rooting depths to increase nutrient use efficiency. The importance of incorporating a manure application together with straw to increase soil fertility in the North China Plain (NCP) needs further studies.
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Bodner G, Nakhforoosh A, Arnold T, Leitner D. Hyperspectral imaging: a novel approach for plant root phenotyping. PLANT METHODS 2018; 14:84. [PMID: 30305838 PMCID: PMC6169016 DOI: 10.1186/s13007-018-0352-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 09/24/2018] [Indexed: 05/22/2023]
Abstract
BACKGROUND Root phenotyping aims to characterize root system architecture because of its functional role in resource acquisition. RGB imaging and analysis procedures measure root system traits via colour contrasts between roots and growth media or artificial backgrounds. In the case of plants grown in soil-filled rhizoboxes, where the colour contrast can be poor, it is hypothesized that root imaging based on spectral signatures improves segmentation and provides additional knowledge on physico-chemical root properties. RESULTS Root systems of Triticum durum grown in soil-filled rhizoboxes were scanned in a spectral range of 1000-1700 nm with 222 narrow bands and a spatial resolution of 0.1 mm. A data processing pipeline was developed for automatic root segmentation and analysis of spectral root signatures. Spectral- and RGB-based root segmentation did not significantly differ in accuracy even for a bright soil background. Best spectral segmentation was obtained from log-linearized and asymptotic least squares corrected images via fuzzy clustering and multilevel thresholding. Root axes revealed major spectral distinction between center and border regions. Root decay was captured by an exponential function of the difference spectra between water and structural carbon absorption regions. CONCLUSIONS Fundamentals for root phenotyping using hyperspectral imaging have been established by means of an image processing pipeline for automated segmentation of soil-grown plant roots at a high spatial resolution and for the exploration of spectral signatures encoding physico-chemical root zone properties.
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Affiliation(s)
- Gernot Bodner
- Division of Agronomy, Department of Crop Sciences, University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad Lorenz-Straße 24, 3430 Tulln an der Donau, Austria
| | - Alireza Nakhforoosh
- Division of Agronomy, Department of Crop Sciences, University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad Lorenz-Straße 24, 3430 Tulln an der Donau, Austria
- Agriculture and Agri-Food Canada, Brandon Research and Development Centre, Brandon, MB R7A 5Y3 Canada
| | - Thomas Arnold
- Carinthian Tech Research AG, Europastraße 12, High Tech Campus Villach, 9524 Villach/St. Magdalen, Austria
| | - Daniel Leitner
- Computational Science Center, University of Vienna, Oskar-Morgenstern-Platz 1, 1090 Vienna, Austria
- Simulationswerkstatt, Ortmayrstrasse 20, 4060 Leonding, Austria
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Functional and structural insights into candidate genes associated with nitrogen and phosphorus nutrition in wheat (Triticum aestivum L.). Int J Biol Macromol 2018; 118:76-91. [DOI: 10.1016/j.ijbiomac.2018.06.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/01/2018] [Accepted: 06/02/2018] [Indexed: 12/17/2022]
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Yao Z, Zhang D, Yao P, Zhao N, Li Y, Zhang S, Zhai B, Huang D, Ma A, Zuo Y, Cao W, Gao Y. Optimizing the synthetic nitrogen rate to balance residual nitrate and crop yield in a leguminous green-manured wheat cropping system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 631-632:1234-1242. [PMID: 29727948 DOI: 10.1016/j.scitotenv.2018.03.115] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 03/08/2018] [Accepted: 03/10/2018] [Indexed: 06/08/2023]
Abstract
Nitrate that originates from agriculture is linked to a series of deleterious environmental consequences that are closely related to human health. Therefore, it is vital to design cropping systems that can produce acceptable crop yields while minimizing the impact of surplus soil nitrate. To develop quantitative estimations, data from 2008 to 2016 were evaluated using multiple regression models. A split-plot field experiment was conducted, with the main treatments of growing Huai bean, soybean and mung bean in summer as leguminous green manure (LGM) while fallow as the control. Four synthetic N rates (0, 108, 135 and 162kgha-1) were applied as sub-treatments at wheat seeding. The N accumulation for LGMs ranged from 61 to 90kgha-1, and that of Huai bean was 46% higher than the average value of soybean and mung bean (P<0.05). The threshold of total N for wheat to produce the highest yields was 141kgha-1. For the LGM treatments, residual nitrate accumulated below the root-zone soil was not significantly increased even when their total N inputs were higher than that of fallow with 162kgha-1 of synthetic N. The estimated nitrate-holding capacity of the root-zone soil for the LGM treatments ranged from 104 to 117kgha-1, and the corresponding synthetic N limits were 97-130kgha-1. Considering the target of producing high wheat yields while keeping the residual nitrate in the root-zone soil, the optimal synthetic N rates for LGM treatments were 52-80kgha-1. In conclusion, growing LGMs can maintain high crop yield and mitigate the environmental impact of residual nitrate by substantially replacing the synthetic N to avoid nitrate leaching to deeper soils.
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Affiliation(s)
- Zhiyuan Yao
- College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, Shaanxi, China
| | - Dabin Zhang
- College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, Shaanxi, China
| | - Pengwei Yao
- College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, Shaanxi, China
| | - Na Zhao
- Bayannaoer Academy of Agricultural and Animal Sciences, 015000 Bayannaoer, Inner Mongolia, China
| | - Yangyang Li
- Institute of Soil and Water Conservation, CAS & MWR, 712100 Yangling, Shaanxi, China
| | - Suiqi Zhang
- Institute of Soil and Water Conservation, CAS & MWR, 712100 Yangling, Shaanxi, China
| | - Bingnian Zhai
- College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, Shaanxi, China
| | - Donglin Huang
- College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, Shaanxi, China
| | - Aisheng Ma
- College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, Shaanxi, China
| | - Yajie Zuo
- College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, Shaanxi, China
| | - Weidong Cao
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, 100081 Beijing, China
| | - Yajun Gao
- College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, Shaanxi, China; Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, 712100 Yangling, Shaanxi, China.
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One-time root-zone N fertilization increases maize yield, NUE and reduces soil N losses in lime concretion black soil. Sci Rep 2018; 8:10258. [PMID: 29980714 PMCID: PMC6035251 DOI: 10.1038/s41598-018-28642-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 05/11/2018] [Indexed: 12/05/2022] Open
Abstract
Excess N-fertilizer application and inappropriate fertilization methods have led to low N use efficiency (NUE) and high N leaching. A field experiment was performed in a typical lime concretion black soil area to compare N application methods: split surface broadcasting (SSB) and one-time root-zone fertilization (RZF) on grain yield, NUE, the fate of 15N urea and soil N loss during the 2015 and 2016 maize growing seasons. Each application method was tested at N rates of 135 and 180 kg N ha−1, and a control (CK) with no N fertilizer. The RZF treatment remarkably increased grain yield by 7.0% compared with SSB treatment under 180 kg N ha−1, and significantly increased N derived from fertilizer by 28.5%. The residual 15N in the 0–80 cm soil layer was 40.6–47.6% after harvest, 61.8–70.9% of which was retained in 0–20 cm. The RZF remarkably increased the 15N recovery in maize by 28.7%, while significantly decreased the potential N losses by 30.2% compared with SSB in both seasons. In conclusion, one-time RZF of urea is recommended for obtaining high yields, increasing NUE, and minimizing N losses in maize, which deserves more attention for developing and applying in the future.
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Tubert E, Vitali VA, Alvarez MS, Tubert FA, Baroli I, Amodeo G. Synthesis and evaluation of a superabsorbent-fertilizer composite for maximizing the nutrient and water use efficiency in forestry plantations. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 210:239-254. [PMID: 29348059 DOI: 10.1016/j.jenvman.2017.12.062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 12/11/2017] [Accepted: 12/24/2017] [Indexed: 05/21/2023]
Abstract
Reducing fertilizer use is a priority in the quest for sustainable forestry systems. In short rotation Eucalyptus plantations, NPK pellets are routinely added to the seedling's top soil layer at planting, potentially leading to increased seedling mortality, nutrient loss and environmental degradation. To address this triple challenge, the development of efficient fertilization practices is essential. In the present work, we synthesized a crosslinked acrylic-cellulosic superabsorbent composite (SAPH-BAL) containing small amounts of specific nutrients integrated in the polymer matrix. We analyzed the composite's chemical and rheological properties, and assessed the viability of Eucalyptus plantations supplied with it at planting. Physiological measurements confirmed the suitability of SAPH-BAL in greenhouse-grown potted seedlings subjected to different growth conditions, showing that it efficiently delivers nutrients while protecting seedlings from drought stress. Field experiments carried out at ten South American locations covering an ample range of environmental conditions confirmed the beneficial effect of SAPH-BAL on growth and survival in comparison to the conventional fertilization scheme (superabsorbent + 75 g NPK). Furthermore, it was found that plants treated with SAPH-BAL were less affected by the differences in rainfall regimes during the experiments compared to those fertilized conventionally. To the best of our knowledge this is the first report describing the successful use of superabsorbents for root targeted delivery of fertilizers in forestry operations.
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Affiliation(s)
- E Tubert
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, Pabellón II, (C1428EGA), Buenos Aires, Argentina; Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET-Universidad de Buenos Aires, Argentina
| | - V A Vitali
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, Pabellón II, (C1428EGA), Buenos Aires, Argentina; Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET-Universidad de Buenos Aires, Argentina
| | - M S Alvarez
- Departamento de Ciencias de la Atmósfera y los Océanos, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina; Centro de Investigaciones del Mar y la Atmósfera (CIMA), Instituto Franco Argentino sobre Estudios del Clima y sus Impactos (UMI IFAECI)/CNRS, CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - F A Tubert
- Tetraquímica S.A., Hurlingham, Buenos Aires, Argentina
| | - I Baroli
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, Pabellón II, (C1428EGA), Buenos Aires, Argentina; Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET-Universidad de Buenos Aires, Argentina
| | - G Amodeo
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, Pabellón II, (C1428EGA), Buenos Aires, Argentina; Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET-Universidad de Buenos Aires, Argentina.
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Parra-Londono S, Kavka M, Samans B, Snowdon R, Wieckhorst S, Uptmoor R. Sorghum root-system classification in contrasting P environments reveals three main rooting types and root-architecture-related marker-trait associations. ANNALS OF BOTANY 2018; 121:267-280. [PMID: 29351588 PMCID: PMC5808808 DOI: 10.1093/aob/mcx157] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 10/19/2017] [Indexed: 05/20/2023]
Abstract
BACKGROUND AND AIMS Roots facilitate acquisition of macro- and micronutrients, which are crucial for plant productivity and anchorage in the soil. Phosphorus (P) is rapidly immobilized in the soil and hardly available for plants. Adaptation to P scarcity relies on changes in root morphology towards rooting systems well suited for topsoil foraging. Root-system architecture (RSA) defines the spatial organization of the network comprising primary, lateral and stem-derived roots and is important for adaptation to stress conditions. RSA phenotyping is a challenging task and essential for understanding root development. METHODS In this study, 19 traits describing RSA were analysed in a diversity panel comprising 194 sorghum genotypes, fingerprinted with a 90-k single-nucleotide polymorphism (SNP) array and grown under low and high P availability. KEY RESULTS Multivariate analysis was conducted and revealed three different RSA types: (1) a small root system; (2) a compact and bushy rooting type; and (3) an exploratory root system, which might benefit plant growth and development if water, nitrogen (N) or P availability is limited. While several genotypes displayed similar rooting types in different environments, others responded to P scarcity positively by developing more exploratory root systems, or negatively with root growth suppression. Genome-wide association studies revealed significant quantitative trait loci (P < 2.9 × 10-6) on chromosomes SBI-02, SBI-03, SBI-05 and SBI-09. Co-localization of significant and suggestive (P < 5.7 × 10-5) associations for several traits indicated hotspots controlling root-system development on chromosomes SBI-02 and SBI-03. CONCLUSIONS Sorghum genotypes with a compact, bushy and shallow root system provide potential adaptation to P scarcity in the field by allowing thorough topsoil foraging, while genotypes with an exploratory root system may be advantageous if N or water is the limiting factor, although such genotypes showed highest P uptake levels under the artificial conditions of the present study.
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Affiliation(s)
| | - Mareike Kavka
- Chair of Agronomy, University of Rostock, Rostock, Germany
| | - Birgit Samans
- Department of Plant Breeding, Justus Liebig University Gießen, Gießen, Germany
| | - Rod Snowdon
- Department of Plant Breeding, Justus Liebig University Gießen, Gießen, Germany
| | | | - Ralf Uptmoor
- Chair of Agronomy, University of Rostock, Rostock, Germany
- For correspondence. E-mail:
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Li H, Liu B, McCormack ML, Ma Z, Guo D. Diverse belowground resource strategies underlie plant species coexistence and spatial distribution in three grasslands along a precipitation gradient. THE NEW PHYTOLOGIST 2017; 216:1140-1150. [PMID: 28758691 DOI: 10.1111/nph.14710] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 06/13/2017] [Indexed: 06/07/2023]
Abstract
Functional traits and their variation mediate plant species coexistence and spatial distribution. Yet, how patterns of variation in belowground traits influence resource acquisition across species and plant communities remains obscure. To characterize diverse belowground strategies in relation to species coexistence and abundance, we assessed four key belowground traits - root diameter, root branching intensity, first-order root length and mycorrhizal colonization - in 27 coexisting species from three grassland communities along a precipitation gradient. Species with thinner roots had higher root branching intensity, but shorter first-order root length and consistently low mycorrhizal colonization, whereas species with thicker roots enhanced their capacity for resource acquisition by producing longer first-order roots and maintaining high mycorrhizal colonization. Plant species observed across multiple sites consistently decreased root branching and/or mycorrhizal colonization, but increased lateral root length with decreasing precipitation. Additionally, the degree of intraspecific trait variation was positively correlated with species abundance across the gradient, indicating that high intraspecific trait variation belowground may facilitate greater fitness and chances of survival across multiple habitats. These results suggest that a small set of critical belowground traits can effectively define diverse resource acquisition strategies in different environments and may forecast species survival and range shifts under climate change.
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Affiliation(s)
- Hongbo Li
- Center of Forest Ecosystem Studies and Qianyanzhou Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Bitao Liu
- College of Forestry, Shanxi Agricultural University, Taigu, Shanxi, 030801, China
| | - M Luke McCormack
- Center of Forest Ecosystem Studies and Qianyanzhou Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- Department of Plant Biology, University of Minnesota, St Paul, MN, 55108, USA
| | - Zeqing Ma
- Center of Forest Ecosystem Studies and Qianyanzhou Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Dali Guo
- Center of Forest Ecosystem Studies and Qianyanzhou Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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Ouyang W, Huang W, Hao X, Tysklind M, Haglund P, Hao F. Watershed soil Cd loss after long-term agricultural practice and biochar amendment under four rainfall levels. WATER RESEARCH 2017; 122:692-700. [PMID: 28676175 DOI: 10.1016/j.watres.2017.06.084] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 06/27/2017] [Accepted: 06/29/2017] [Indexed: 05/22/2023]
Abstract
Some heavy metals in farmland soil can be transported into the waterbody, affecting the water quality and sediment at the watershed outlet, which can be used to determine the historical loss pattern. Cd is a typical heavy metal leached from farmland that is related to phosphate fertilizers and carries serious environmental risk. The spatial-vertical pattern of Cd in soil and the vertical trend of Cd in the river sediment core were analyzed, which showed the migration and accumulation of Cd in the watershed. To prevent watershed Cd loss, biochar was employed, and leaching experiments were conducted to investigate the Cd loss from soil depending on the initial concentration. Four rainfall intensities, 1.25 mm/h, 2.50 mm/h, 5.00 mm/h, and 10.00 mm/h, were used to simulate typical rainfall scenarios for the study area. Biochar was prepared from corn straw after pretreatment with ammonium dihydrogen phosphate (ADP) and pyrolysis at 400 °C under anoxic conditions. To identify the effects of biochar amendment on Cd migration, the biochar was mixed with soil for 90 days at concentrations of 0%, 0.5%, 1.0%, 3.0%, and 5.0% soil by weight. The results showed that the Cd leaching load increased as the initial load and rainfall intensity increased and that eluviation caused surface Cd to diffuse to the deep soils. The biochar application caused more of the heavy metals to be immobilized in the amended soil rather than transported into the waterbody. The sorption efficiency of the biochar for Cd increased as the addition level increased to 3%, which showed better performance than the 5% addition level under some initial concentration and rainfall conditions. The research indicated that biochar is a potential material to prevent diffuse heavy metal pollution and that a lower addition makes the application more feasible.
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Affiliation(s)
- Wei Ouyang
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing, 100875, China.
| | - Weijia Huang
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing, 100875, China
| | - Xin Hao
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing, 100875, China
| | - Mats Tysklind
- Department of Chemistry, Umeå University, SE-90187, Umeå, Sweden
| | - Peter Haglund
- Department of Chemistry, Umeå University, SE-90187, Umeå, Sweden
| | - Fanghua Hao
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing, 100875, China
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Ngwene B, Neugart S, Baldermann S, Ravi B, Schreiner M. Intercropping Induces Changes in Specific Secondary Metabolite Concentration in Ethiopian Kale ( Brassica carinata) and African Nightshade ( Solanum scabrum) under Controlled Conditions. FRONTIERS IN PLANT SCIENCE 2017; 8:1700. [PMID: 29033969 PMCID: PMC5626848 DOI: 10.3389/fpls.2017.01700] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/15/2017] [Indexed: 05/03/2023]
Abstract
Intercropping is widespread in small-holder farming systems in tropical regions and is also practiced in the cultivation of indigenous vegetables, to alleviate the multiple burdens of malnutrition. Due to interspecific competition and/or complementation between intercrops, intercropping may lead to changes in plants accumulation of minerals and secondary metabolites and hence, alter nutritional quality for consumers. Intercropping aims to intensify land productivity, while ensuring that nutritional quality is not compromised. This study aimed to investigate changes in minerals and secondary plant metabolites in intercropped Brassica carinata and Solanum scabrum, two important African indigenous vegetables, and evaluated the suitability of this combination for dryer areas. B. carinata and S. scabrum were grown for 6 weeks under controlled conditions in a greenhouse trial. Large rootboxes (8000 cm3 volume) were specifically designed for this experiment. Each rootbox was planted with two plants, either of the same plant species (mono) or one of each plant species (mixed). A quartz sand/soil substrate was used and fertilized adequately for optimal plant growth. During the last 4 weeks of the experiment, the plants were either supplied with optimal (65% WHC) or low (30% WHC) irrigation, to test the effect of a late-season drought. Intercropping increased total glucosinolate content in B. carinata, while maintaining biomass production and the contents of other health related minerals in both B. carinata and S. scabrum. Moreover, low irrigation led to an increase in carotene accumulation in both mono and intercropped S. scabrum, but not in B. carinata, while the majority of kaempferol glycosides and hydroxycinnamic acid derivatives of both species were decreased by intercropping and drought treatment. This study indicates that some health-related phytochemicals can be modified by intercropping or late-season drought, but field validation of these results is necessary before definite recommendation can be made to stakeholders.
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Affiliation(s)
- Benard Ngwene
- Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
| | - Susanne Neugart
- Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
| | - Susanne Baldermann
- Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
- Institute of Nutritional Science, University of Potsdam, Potsdam, Germany
| | - Beena Ravi
- Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
- Department of Crop and Animal Sciences, Humboldt University of Berlin, Berlin, Germany
| | - Monika Schreiner
- Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
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Wang H, Zheng H, Jiang Z, Dai Y, Liu G, Chen L, Luo X, Liu M, Wang Z. Efficacies of biochar and biochar-based amendment on vegetable yield and nitrogen utilization in four consecutive planting seasons. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 593-594:124-133. [PMID: 28342413 DOI: 10.1016/j.scitotenv.2017.03.096] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 03/07/2017] [Accepted: 03/10/2017] [Indexed: 05/28/2023]
Abstract
Biochar has been suggested as a potential tailored technology for mediating soil conditions and improving crop yields. However, the efficacies of biochar and biochar-based amendments (e.g., composted biochar) in agricultural soils under a rotation system remain uncertain. In this study, an arable soil was subjected to peanut shell biochar (PBC) and biochar-based amendment (PAD) combined with or without nitrogen (N) fertilizer to evaluate their effects on vegetable yield, N bioavailability, and their relative contribution to vegetable biomass in four consecutive planting seasons. PBC alone or in co-application with N fertilizer had little effect on vegetable yield, while PAD co-application with N fertilizer decreased vegetable biomass because of the inhibition of root morphology by excessive nutrient supply. PBC and PAD applications increased rhizosphere soil pH due to OH- and HCO3- release and NO3--N uptake. Although the addition of PAD increased soil N contents due to its high contents in PAD, it had little effects on N utilization efficiency (NUE) in the four seasons. The relative contribution of PBC, PAD, and their interaction with N fertilizer to biomass yield was maintained at a low level. Our results indicated that a biochar-based amendment (e.g., PAD) was a potential alternative to N fertilizer, but the ratio of biochar to additives should be managed carefully to generate optimal benefits. Notably, the efficacy of PAD on plant growth was closely associated with plant species, and further related research on different plants is encouraged.
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Affiliation(s)
- Hefang Wang
- College of Environmental Science and Engineering, and Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Hao Zheng
- College of Environmental Science and Engineering, and Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
| | - Zhixiang Jiang
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Yanhui Dai
- College of Environmental Science and Engineering, and Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Guocheng Liu
- College of Environmental Science and Engineering, and Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Lei Chen
- College of Environmental Science and Engineering, and Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Xianxiang Luo
- College of Environmental Science and Engineering, and Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Minhui Liu
- College of Environmental Science and Engineering, and Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Zhenyu Wang
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China.
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Wu M, Li G, Li W, Liu J, Liu M, Jiang C, Li Z. Nitrogen Fertilizer Deep Placement for Increased Grain Yield and Nitrogen Recovery Efficiency in Rice Grown in Subtropical China. FRONTIERS IN PLANT SCIENCE 2017; 8:1227. [PMID: 28744302 PMCID: PMC5504192 DOI: 10.3389/fpls.2017.01227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 06/28/2017] [Indexed: 06/07/2023]
Abstract
Field plot experiments were conducted over 3 years (from April 2014 to November 2016) in a double-rice (Oryza sativa L.) cropping system in subtropical China to evaluate the effects of N fertilizer placement on grain yield and N recovery efficiency (NRE). Different N application methods included: no N application (CK); N broadcast application (NBP); N and NPK deep placement (NDP and NPKDP, respectively). Results showed that grain yield and apparent NRE significantly increased for NDP and NPKDP as compared to NBP. The main reason was that N deep placement (NDP) increased the number of productive panicle per m-2. To further evaluate the increase, a pot experiment was conducted to understand the N supply in different soil layers in NDP during the whole rice growing stage and a 15N tracing technique was used in a field experiment to investigate the fate of urea-15N in the rice-soil system during rice growth and at maturity. The pot experiment indicated that NDP could maintain a higher N supply in deep soil layers than N broadcast for 52 days during rice growth. The 15N tracing study showed that NDP could maintain much higher fertilizer N in the 5-20 cm soil layer during rice growth and could induce plant to absorb more N from fertilizer and soil than NBP, which led to higher NRE. One important finding was that NDP and NPKDP significantly increased fertilizer NRE but did not lead to N declined in soil compared to NBP. Compared to NPK, NPKDP induced rice plants to absorb more fertilizer N rather than soil N.
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Affiliation(s)
- Meng Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of SciencesNanjing, China
| | - Guilong Li
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of SciencesNanjing, China
| | - Weitao Li
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of SciencesNanjing, China
| | - Jia Liu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of SciencesNanjing, China
| | - Ming Liu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of SciencesNanjing, China
| | - Chunyu Jiang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of SciencesNanjing, China
| | - Zhongpei Li
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of SciencesNanjing, China
- Graduate University of Chinese Academy of SciencesBeijing, China
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50
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Zeng M, de Vries W, Bonten LTC, Zhu Q, Hao T, Liu X, Xu M, Shi X, Zhang F, Shen J. Model-Based Analysis of the Long-Term Effects of Fertilization Management on Cropland Soil Acidification. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:3843-3851. [PMID: 28264162 DOI: 10.1021/acs.est.6b05491] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Agricultural soil acidification in China is known to be caused by the over-application of nitrogen (N) fertilizers, but the long-term impacts of different fertilization practices on intensive cropland soil acidification are largely unknown. Here, we further developed the soil acidification model VSD+ for intensive agricultural systems and validated it against observed data from three long-term fertilization experiments in China. The model simulated well the changes in soil pH and base saturation over the last 20 years. The validated model was adopted to quantify the contribution of N and base cation (BC) fluxes to soil acidification. The net NO3- leaching and NO4+input accounted for 80% of the proton production under N application, whereas one-third of acid was produced by BC uptake when N was not applied. The simulated long-term (1990-2050) effects of different fertilizations on soil acidification showed that balanced N application combined with manure application avoids reduction of both soil pH and base saturation, while application of calcium nitrate and liming increases these two soil properties. Reducing NH4+ input and NO3- leaching by optimizing N management and increasing BC inputs by manure application thus already seem to be effective approaches to mitigating soil acidification in intensive cropland systems.
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Affiliation(s)
- Mufan Zeng
- College of Resources and Environmental Sciences, Centre for Resources, Environment and Food Security, Key Lab of Plant-Soil Interactions, MOE, China Agricultural University , Beijing 100193, China
| | - Wim de Vries
- Environmental Systems Analysis Group, Wageningen University , P.O. Box 47, 6700 AA Wageningen, The Netherlands
- Alterra-Wageningen UR , Soil Science Centre, P.O. Box 47, 6700 AA Wageningen, The Netherlands
| | - Luc T C Bonten
- Alterra-Wageningen UR , Soil Science Centre, P.O. Box 47, 6700 AA Wageningen, The Netherlands
| | - Qichao Zhu
- College of Resources and Environmental Sciences, Centre for Resources, Environment and Food Security, Key Lab of Plant-Soil Interactions, MOE, China Agricultural University , Beijing 100193, China
- Environmental Systems Analysis Group, Wageningen University , P.O. Box 47, 6700 AA Wageningen, The Netherlands
| | - Tianxiang Hao
- College of Resources and Environmental Sciences, Centre for Resources, Environment and Food Security, Key Lab of Plant-Soil Interactions, MOE, China Agricultural University , Beijing 100193, China
| | - Xuejun Liu
- College of Resources and Environmental Sciences, Centre for Resources, Environment and Food Security, Key Lab of Plant-Soil Interactions, MOE, China Agricultural University , Beijing 100193, China
| | - Minggang Xu
- Ministry of Agriculture Key Laboratory of Plant Nutrition and Nutrient Cycling, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Xiaojun Shi
- College of Resources and Environment, Southwest University , Chongqing 400716, China
| | - Fusuo Zhang
- College of Resources and Environmental Sciences, Centre for Resources, Environment and Food Security, Key Lab of Plant-Soil Interactions, MOE, China Agricultural University , Beijing 100193, China
| | - Jianbo Shen
- College of Resources and Environmental Sciences, Centre for Resources, Environment and Food Security, Key Lab of Plant-Soil Interactions, MOE, China Agricultural University , Beijing 100193, China
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