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Zhang L, Feng Y, Zhao Z, Baoyin B, Cui Z, Wang H, Li Q, Cui J. Macrogenomics-Based Analysis of the Effects of Intercropped Soybean Photosynthetic Characteristics and Nitrogen-Assimilating Enzyme Activities on Yield at Different Nitrogen Levels. Microorganisms 2024; 12:1220. [PMID: 38930602 PMCID: PMC11206168 DOI: 10.3390/microorganisms12061220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Currently, China's soybean self-sufficiency rate is only 15%, highlighting the soybean crisis and the supply chain risks that pose a major threat to China's food security. Thus, it has become imperative to step up efforts to boost soybean production capacity while promoting the green and sustainable development of regional farmland ecosystems. In this context, the present study comprehensively investigated the effects of intercropping and nitrogen application rate on soybean yield, as well as the changes in gradients generated by different levels of nitrogen application. Based on six consecutive years of maize-soybean intercropping planting patterns, the inter-root soils of soybeans were collected at the flowering stage and evaluated for soil nitrogen content, nitrogen-assimilating enzyme activities, and microbial community composition of soybean, which were correlated with yield, to clarify the main pathways and modes of intercropping effects. The N2 level (80 kg·ha-1) was favourable for higher yield. In comparison to monocropping, the intercropping reduced yield by 9.65-13.01%, photosynthetic characteristics by 1.33-7.31%, and plant nitrogen-assimilating enzyme activities by 8.08-32.01% at the same level of N application. Likewise, soil urease and catalase activities were reduced by 9.22 and 1.80%, while soil nitrogen content declined by an average of 6.38%. Gemmatimonas and Bradyrhizobium enrichment significantly increased soil nitrogen content, photosynthetic characteristics, and soybean yield, while it was reduced by Candidatus_Udaeobacter and Candidatus_Solibacte enrichment. The results of this study provide a theoretical basis for further optimising maize-soybean intercropping, which is crucial for enhancing the agricultural production structure and improving the overall soybean production capacity.
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Affiliation(s)
- Liqiang Zhang
- College of Plant Science, Jilin University, Changchun 130012, China; (L.Z.); (Y.F.); (Z.Z.); (B.B.); (H.W.)
| | - Yudi Feng
- College of Plant Science, Jilin University, Changchun 130012, China; (L.Z.); (Y.F.); (Z.Z.); (B.B.); (H.W.)
| | - Zehang Zhao
- College of Plant Science, Jilin University, Changchun 130012, China; (L.Z.); (Y.F.); (Z.Z.); (B.B.); (H.W.)
| | - Bate Baoyin
- College of Plant Science, Jilin University, Changchun 130012, China; (L.Z.); (Y.F.); (Z.Z.); (B.B.); (H.W.)
| | - Zhengguo Cui
- Soybean Research Institute, Jilin Academy of Agricultural Sciences, Changchun 130033, China;
| | - Hongyu Wang
- College of Plant Science, Jilin University, Changchun 130012, China; (L.Z.); (Y.F.); (Z.Z.); (B.B.); (H.W.)
| | - Qiuzhu Li
- College of Plant Science, Jilin University, Changchun 130012, China; (L.Z.); (Y.F.); (Z.Z.); (B.B.); (H.W.)
| | - Jinhu Cui
- College of Plant Science, Jilin University, Changchun 130012, China; (L.Z.); (Y.F.); (Z.Z.); (B.B.); (H.W.)
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Abou Khater L, Maalouf F, Balech R, He Y, Zong X, Rubiales D, Kumar S. Improvement of cool-season food legumes for adaptation to intercropping systems: breeding faba bean for intercropping with durum wheat as a case study. FRONTIERS IN PLANT SCIENCE 2024; 15:1368509. [PMID: 38817938 PMCID: PMC11137300 DOI: 10.3389/fpls.2024.1368509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 04/26/2024] [Indexed: 06/01/2024]
Abstract
Although the transition toward a more sustainable agricultural system is sparking the interest of scientists and farmers around the globe, breeding programs are still focusing on optimizing cultivars intended for the monoculture system, and most cultivars available on the market are not suitable for intercropping. The incorporation of versatile cool-season food legumes (CSFLs) in the intercropping system is a promising way toward more diversified and sustainable cropping systems. However, as the selection of good-performing cultivars under sole cropping does not always lead to a good performance in intercropping, the development of an alternative breeding scheme for intercropping is now a necessity. The case study of faba bean-wheat intercropping was used to select for traits associated with better performance of faba bean, resulting in identifying the combined grain yield, 100-seed weight, number of pods per plant, and canopy height as key traits for faba bean-wheat intercropping suitability. Incorporating these traits in the breeding programs would be the cornerstone of the prospective transition.
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Affiliation(s)
- Lynn Abou Khater
- Biodiversity and Crop Improvement Program, International Center for Agricultural Research in the Dry Areas (ICARDA), Terbol, Lebanon
| | - Fouad Maalouf
- Biodiversity and Crop Improvement Program, International Center for Agricultural Research in the Dry Areas (ICARDA), Terbol, Lebanon
| | - Rind Balech
- Biodiversity and Crop Improvement Program, International Center for Agricultural Research in the Dry Areas (ICARDA), Terbol, Lebanon
| | - Yuhua He
- Institute of Food Crop, Yunnan Academy of Agricultural Science, Kunming, China
| | - Xuxiao Zong
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Diego Rubiales
- Institute for Sustainable Agriculture, The Spanish National Research Council (CSIC), Córdoba, Spain
| | - Shiv Kumar
- Biodiversity and Crop Improvement Program, International Center for Agricultural Research in Dry Areas (ICARDA), New Delhi, India
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Dubey R, Zustovi R, Landschoot S, Dewitte K, Verlinden G, Haesaert G, Maenhout S. Harnessing monocrop breeding strategies for intercrops. FRONTIERS IN PLANT SCIENCE 2024; 15:1394413. [PMID: 38799097 PMCID: PMC11119317 DOI: 10.3389/fpls.2024.1394413] [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: 03/01/2024] [Accepted: 04/22/2024] [Indexed: 05/29/2024]
Abstract
Intercropping is considered advantageous for many reasons, including increased yield stability, nutritional value and the provision of various regulating ecosystem services. However, intercropping also introduces diverse competition effects between the mixing partners, which can negatively impact their agronomic performance. Therefore, selecting complementary intercropping partners is the key to realizing a well-mixed crop production. Several specialized intercrop breeding concepts have been proposed to support the development of complementary varieties, but their practical implementation still needs to be improved. To lower this adoption threshold, we explore the potential of introducing minor adaptations to commonly used monocrop breeding strategies as an initial stepping stone towards implementing dedicated intercrop breeding schemes. While we acknowledge that recurrent selection for reciprocal mixing abilities is likely a more effective breeding paradigm to obtain genetic progress for intercrops, a well-considered adaptation of monoculture breeding strategies is far less intrusive concerning the design of the breeding programme and allows for balancing genetic gain for both monocrop and intercrop performance. The main idea is to develop compatible variety combinations by improving the monocrop performance in the two breeding pools in parallel and testing for intercrop performance in the later stages of selection. We show that the optimal stage for switching from monocrop to intercrop testing should be adapted to the specificity of the crop and the heritability of the traits involved. However, the genetic correlation between the monocrop and intercrop trait performance is the primary driver of the intercrop breeding scheme optimization process.
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Affiliation(s)
| | | | | | | | | | | | - Steven Maenhout
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
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Li L, Xie Y, Chen K, Zhou J, Wang M, Wang W, Zhang Z, Lu F, Du Y, Feng Y. Adsorption Characteristics of Ball Milling-Modified Chinese Medicine Residue Biochar Toward Quercetin. ACS OMEGA 2024; 9:11658-11670. [PMID: 38496992 PMCID: PMC10938329 DOI: 10.1021/acsomega.3c09016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/10/2024] [Accepted: 02/19/2024] [Indexed: 03/19/2024]
Abstract
Using traditional Chinese medicine residues as raw materials, different biochars (BC) were prepared through oxygen-limited pyrolysis at 300 °C, 500 °C, and 700 °C, and BC was ball-milled to produce ball-milled biochar (BMC). Using these adsorbents to adsorb the allelopathic autotoxic substance quercetin. The physical and chemical properties of various biochars derived from traditional Chinese medicine residues were characterized using the Brunauer-Emmett-Teller-N2 surface areas (BET), scanning electron microscopy (SEM), Fourier transform IR spectroscopy (FTIR), X-ray diffraction (XRD), and Raman spectroscopy (Raman). The study investigated the effects of the initial pH value, different humic acid concentrations, and multiple adsorption-desorption experiments on the removal of quercetin from the solution. The article discusses the adsorption mechanism of quercetin in solution by biochar from a traditional Chinese medicine residue, based on the results of adsorption kinetics and adsorption isotherm fitting. The findings indicate that increasing the pyrolysis temperature reduces the oxygen-containing functional groups of BC, enhances the aromaticity, and stabilizes the carbon structure. The pore structure of BMC becomes more complex after ball milling, which increases the number of oxygen-containing functional groups on the surface. Among the samples tested, BMC700 exhibits the best adsorption performance, with an adsorption capacity of 293.3 mg·g-1 at 318 K. The adsorption process of quercetin by BMC700 follows the pseudo-second-order kinetic model and the Freundlich adsorption isotherm model. The process is primarily a form of multimolecular layer adsorption. Its mechanism involves the pore-filling effect, hydrogen-bonding interaction, electrostatic interaction, and π-π coexistence, as well as the yoke effect. Additionally, they are highly recyclable and show promise in addressing continuous cropping issues.
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Affiliation(s)
- Lanqing Li
- College
of Resources and Environment Science, Anhui
Science and Technology University, Fengyang 233100, China
| | - Yue Xie
- College
of Resources and Environment Science, Anhui
Science and Technology University, Fengyang 233100, China
| | - Keyan Chen
- College
of Resources and Environment Science, Anhui
Science and Technology University, Fengyang 233100, China
| | - Jun Zhou
- College
of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Min Wang
- College
of Resources and Environment Science, Hubei
University, Wuhan 430062, China
| | - Wenqiang Wang
- College
of Resources and Environment Science, Anhui
Science and Technology University, Fengyang 233100, China
| | - Zhifan Zhang
- College
of Resources and Environment Science, Anhui
Science and Technology University, Fengyang 233100, China
| | - Fan Lu
- College
of Resources and Environment Science, Anhui
Science and Technology University, Fengyang 233100, China
| | - Yadong Du
- College
of Resources and Environment Science, Anhui
Science and Technology University, Fengyang 233100, China
| | - Yinghao Feng
- College
of Resources and Environment Science, Anhui
Science and Technology University, Fengyang 233100, China
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Pixley KV, Cairns JE, Lopez-Ridaura S, Ojiewo CO, Dawud MA, Drabo I, Mindaye T, Nebie B, Asea G, Das B, Daudi H, Desmae H, Batieno BJ, Boukar O, Mukankusi CTM, Nkalubo ST, Hearne SJ, Dhugga KS, Gandhi H, Snapp S, Zepeda-Villarreal EA. Redesigning crop varieties to win the race between climate change and food security. MOLECULAR PLANT 2023; 16:1590-1611. [PMID: 37674314 DOI: 10.1016/j.molp.2023.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 08/17/2023] [Accepted: 09/03/2023] [Indexed: 09/08/2023]
Abstract
Climate change poses daunting challenges to agricultural production and food security. Rising temperatures, shifting weather patterns, and more frequent extreme events have already demonstrated their effects on local, regional, and global agricultural systems. Crop varieties that withstand climate-related stresses and are suitable for cultivation in innovative cropping systems will be crucial to maximize risk avoidance, productivity, and profitability under climate-changed environments. We surveyed 588 expert stakeholders to predict current and novel traits that may be essential for future pearl millet, sorghum, maize, groundnut, cowpea, and common bean varieties, particularly in sub-Saharan Africa. We then review the current progress and prospects for breeding three prioritized future-essential traits for each of these crops. Experts predict that most current breeding priorities will remain important, but that rates of genetic gain must increase to keep pace with climate challenges and consumer demands. Importantly, the predicted future-essential traits include innovative breeding targets that must also be prioritized; for example, (1) optimized rhizosphere microbiome, with benefits for P, N, and water use efficiency, (2) optimized performance across or in specific cropping systems, (3) lower nighttime respiration, (4) improved stover quality, and (5) increased early vigor. We further discuss cutting-edge tools and approaches to discover, validate, and incorporate novel genetic diversity from exotic germplasm into breeding populations with unprecedented precision, accuracy, and speed. We conclude that the greatest challenge to developing crop varieties to win the race between climate change and food security might be our innovativeness in defining and boldness to breed for the traits of tomorrow.
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Affiliation(s)
- Kevin V Pixley
- International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico.
| | - Jill E Cairns
- International Maize and Wheat Improvement Center (CIMMYT), Harare, Zimbabwe
| | | | - Chris O Ojiewo
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | | | - Inoussa Drabo
- International Maize and Wheat Improvement Center (CIMMYT), Dakar, Senegal
| | - Taye Mindaye
- Ethiopian Institute of Agricultural Research (EIAR), Addis Ababa, Ethiopia
| | - Baloua Nebie
- International Maize and Wheat Improvement Center (CIMMYT), Dakar, Senegal
| | - Godfrey Asea
- National Agricultural Research Organization (NARO), Kampala, Uganda
| | - Biswanath Das
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Happy Daudi
- Tanzania Agricultural Research Institute (TARI), Naliendele, Tanzania
| | - Haile Desmae
- International Maize and Wheat Improvement Center (CIMMYT), Dakar, Senegal
| | - Benoit Joseph Batieno
- Institut de l'Environnement et de Recherches Agricoles (INERA), Ouagadougou, Burkina Faso
| | - Ousmane Boukar
- International Institute of Tropicl Agriculture (IITA), Kano, Nigeria
| | | | | | - Sarah J Hearne
- International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
| | - Kanwarpal S Dhugga
- International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
| | - Harish Gandhi
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Sieglinde Snapp
- International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
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6
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Runck B, Streed A, Wang DR, Ewing PM, Kantar MB, Raghavan B. State spaces for agriculture: A meta-systematic design automation framework. PNAS NEXUS 2023; 2:pgad084. [PMID: 37113979 PMCID: PMC10129062 DOI: 10.1093/pnasnexus/pgad084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/05/2023] [Accepted: 03/06/2023] [Indexed: 04/29/2023]
Abstract
Agriculture is a designed system with the largest areal footprint of any human activity. In some cases, the designs within agriculture emerged over thousands of years, such as the use of rows for the spatial organization of crops. In other cases, designs were deliberately chosen and implemented over decades, as during the Green Revolution. Currently, much work in the agricultural sciences focuses on evaluating designs that could improve agriculture's sustainability. However, approaches to agricultural system design are diverse and fragmented, relying on individual intuition and discipline-specific methods to meet stakeholders' often semi-incompatible goals. This ad-hoc approach presents the risk that agricultural science will overlook nonobvious designs with large societal benefits. Here, we introduce a state space framework, a common approach from computer science, to address the problem of proposing and evaluating agricultural designs computationally. This approach overcomes limitations of current agricultural system design methods by enabling a general set of computational abstractions to explore and select from a very large agricultural design space, which can then be empirically tested.
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Affiliation(s)
- Bryan Runck
- University of Minnesota GEMS Informatics Center, 248 Ruttan Hall, 1994 Buford Ave, St Paul, MN 55108, USA
| | - Adam Streed
- Independent Scientist, 301 S 1100 WM302 American Fork, UT 84003, USA
| | - Diane R Wang
- Department of Agronomy, Purdue University, 915 Mitch Daniels Blvd West, Lafayette, IN 47907, USA
| | - Patrick M Ewing
- USDA-ARS-PA North Central Agricultural Research Laboratory, 2923 Medary Avenue, Brookings, SD 69803, USA
| | - Michael B Kantar
- Department of Tropical Plant and Soil Sciences, University of Hawaii at Manoa, 3190 Maile Way, Honolulu, HI 96822, USA
| | - Barath Raghavan
- Department for Computer Science, University of Southern California, Salvatori Computer Science Center, 941 Bloom Walk, Los Angeles, CA 90089, USA
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7
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Bi YM, Zhang XM, Jiao XL, Li JF, Peng N, Tian GL, Wang Y, Gao WW. The relationship between shifts in the rhizosphere microbial community and root rot disease in a continuous cropping American ginseng system. Front Microbiol 2023; 14:1097742. [PMID: 36865777 PMCID: PMC9971623 DOI: 10.3389/fmicb.2023.1097742] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/09/2023] [Indexed: 02/16/2023] Open
Abstract
The root rot disease causes a great economic loss, and the disease severity usually increases as ginseng ages. However, it is still unclear whether the disease severity is related to changes in microorganisms during the entire growing stage of American ginseng. The present study examined the microbial community in the rhizosphere and the chemical properties of the soil in 1-4-year-old ginseng plants grown in different seasons at two different sites. Additionally, the study investigated ginseng plants' root rot disease index (DI). The results showed that the DI of ginseng increased 2.2 times in one sampling site and 4.7 times in another during the 4 years. With respect to the microbial community, the bacterial diversity increased with the seasons in the first, third, and fourth years but remained steady in the second year. The seasonal changing of relative abundances of bacteria and fungi showed the same trend in the first, third, and fourth years but not in the second year. Linear models revealed that the relative abundances of Blastococcus, Symbiobacterium, Goffeauzyma, Entoloma, Staphylotrichum, Gymnomyces, Hirsutella, Penicillium and Suillus spp. were negatively correlated with DI, while the relative abundance of Pandoraea, Rhizomicrobium, Hebeloma, Elaphomyces, Pseudeurotium, Fusarium, Geomyces, Polyscytalum, Remersonia, Rhizopus, Acremonium, Paraphaeosphaeria, Mortierella, and Metarhizium spp. were positively correlated with DI (P < 0.05). The Mantel test showed that soil chemical properties, including available nitrogen, phosphorus, potassium, calcium, magnesium, organic matter, and pH, were significantly correlated to microbial composition. The contents of available potassium and nitrogen were positively correlated with DI, while pH and organic matter were negatively correlated with DI. In summary, we can deduce that the second year is the key period for the shift of the American ginseng rhizosphere microbial community. Disease aggravation after the third year is related to the deterioration of the rhizosphere microecosystem.
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Affiliation(s)
- Yan-Meng Bi
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, China
| | - Xi-Mei Zhang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,School of Biology and Brewing Engineering, Taishan University, Tai'an, Shandong, China
| | - Xiao-Lin Jiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,Biomedicine School, Beijing City University, Beijing, China
| | - Jun-Fei Li
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Na Peng
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Gei-Lin Tian
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,College of Agricultural and Biological Engineering, Heze University, Heze, Shandong, China
| | - Yi Wang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei-Wei Gao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,*Correspondence: Wei-Wei Gao ✉
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