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Shabir R, Li Y, Megharaj M, Chen C. Biopolymer as an additive for effective biochar-based rhizobial inoculant. Sci Total Environ 2024; 912:169263. [PMID: 38092216 DOI: 10.1016/j.scitotenv.2023.169263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/19/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023]
Abstract
Biochar is an efficient and inexpensive carrier for bacteria that stimulate plant development and growth. In this study, different biopolymer additives (cellulose, xanthan gum, chitin and tryptone) were tested with different addition ratios (1:0.1, 1:0.5 and 1:1) on further enhancing biochar capacity for supporting the growth and activity of Bradyrhizobium japonicum (CB1809). We utilized pine wood biochar (PWBC) pyrolyzed at 400 °C as the base inoculum carrier. The shelf life and survival rate of CB1809 were counted using the colony-forming unit (CFU) method for up to 120 days. Peat served as a standard reference material against which all treatments were compared. Subsequent experiments evaluated the ability of carrier inoculants to promote Glycine max L. (soybean) plant growth and nodulation under different watering regimes, i.e., 55 % water holding capacity (WHC) (D0), 30 % WHC (D1) and, 15 % WHC (D2) using sandy loam soil. Results revealed that among different additives; xanthan gum with 1:0.5 to PWBC [PWBC-xanthan gum(1:0.5)] was observed as a superior formulation in supporting rhizobial shelf life and survival rate of CB1809. In pot experiments, plants with PWBC-xanthan gum(1:0.5) formulation showed significant increase in various physiological characteristics (nitrogenase activity, chlorophyll pigments, membrane stability index, and relative water content), root architecture (root surface area, root average diameter, root volume, root tips, root forks and root crossings), and plant growth attributes (shoot/root dry biomass, shoot/root length, and number of nodules). Additionally, a reduced enrichment of isotopic signatures (δ13C, δ15N) was observed in plants treated with PWBC-xanthan gum(1:0.5), less enrichment of δ15N indicates an inverse link to nodulation and nitrogenase activity, while lower δ13C values indicates effective water use efficiency by plants during drought stress. These results suggest that biopolymers supplementation of the PWBC is useful in promoting shelf life or survival rate of CB1809.
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Affiliation(s)
- Rahat Shabir
- Australian Rivers Institute, School of Environment and Science, Griffith University, Nathan, Campus, 4111, Queensland, Australia; Cooperative Research Centre for High Performance Soils, Callaghan, NSW, Australia
| | - Yantao Li
- Australian Rivers Institute, School of Environment and Science, Griffith University, Nathan, Campus, 4111, Queensland, Australia; Cooperative Research Centre for High Performance Soils, Callaghan, NSW, Australia; College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Mallavarapu Megharaj
- Cooperative Research Centre for High Performance Soils, Callaghan, NSW, Australia; Global Centre for Environmental Remediation, College of Engineering, Science and Environment, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Chengrong Chen
- Australian Rivers Institute, School of Environment and Science, Griffith University, Nathan, Campus, 4111, Queensland, Australia; Cooperative Research Centre for High Performance Soils, Callaghan, NSW, Australia.
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Nafees M, Ullah S, Ahmed I. Bioprospecting Biochar and Plant Growth Promoting Rhizobacteria for Alleviating Water Deficit Stress in Vicia faba L. Gesunde Pflanzen 2023; 75:2563-2577. [DOI: 10.1007/s10343-023-00875-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 03/07/2023] [Indexed: 02/07/2024]
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3
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Gul-Lalay, Ullah S, Nafees M, Ahmed I. Resistance induction in Brassica napus L. against water deficit stress through application of biochar and plant growth promoting rhizobacteria. Journal of the Saudi Society of Agricultural Sciences 2023; 22:420-429. [DOI: 10.1016/j.jssas.2023.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
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Sifton MA, Smith SM, Thomas SC. Biochar-biofertilizer combinations enhance growth and nutrient uptake in silver maple grown in an urban soil. PLoS One 2023; 18:e0288291. [PMID: 37463169 PMCID: PMC10353828 DOI: 10.1371/journal.pone.0288291] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 06/22/2023] [Indexed: 07/20/2023] Open
Abstract
Declining tree health status due to pollutant impacts and nutrient imbalance is widespread in urban forests; however, chemical fertilizer use is increasingly avoided to reduce eutrophication impacts. Biochar (pyrolyzed organic waste) has been advocated as an alternative soil amendment, but biochar alone generally reduces plant N availability. The combination of biochar and either organic forms of N or Plant Growth Promoting Microbes (PGPMs) as biofertilizers may address these challenges. We examined the effects of two wood biochar types with Bacillus velezensis and an inactivated yeast (IY) biofertilizer in a three-month factorial greenhouse experiment with Acer saccharinum L. (silver maple) saplings grown in a representative urban soil. All treatments combining biochars with biofertilizers significantly increased sapling growth, with up to a 91% increase in biomass relative to controls. Growth and physiological responses were closely related to nutrient uptake patterns, with nutrient vector analyses indicating that combined biochar and biofertilizer treatments effectively addressed nutrient limitations of both macronutrients (N, P, K, Mg, Ca), and micronutrients (B, Fe, Mn, Mo, Na, S, and Zn). Biochar-biofertilizer treatments also reduced foliar concentrations of Cu, suggesting potential to mitigate toxic metal impacts common in urban forestry. We conclude that selected combinations of biochar and biofertilizers have substantial promise to address common soil limitations to tree performance in urban settings.
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Affiliation(s)
- Melanie A Sifton
- Institute of Forestry and Conservation, University of Toronto, Toronto, ON, Canada
| | - Sandy M Smith
- Institute of Forestry and Conservation, University of Toronto, Toronto, ON, Canada
| | - Sean C Thomas
- Institute of Forestry and Conservation, University of Toronto, Toronto, ON, Canada
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Obadi A, Alharbi A, Alomran A, Alghamdi AG, Louki I, Alkhasha A. Effect of Biochar Application on Morpho-Physiological Traits, Yield, and Water Use Efficiency of Tomato Crop under Water Quality and Drought Stress. Plants (Basel) 2023; 12:2355. [PMID: 37375980 DOI: 10.3390/plants12122355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023]
Abstract
The use of saline water under drought conditions is critical for sustainable agricultural development in arid regions. Biochar is used as a soil amendment to enhance soil properties such as water-holding capacity and the source of nutrition elements of plants. Therefore, the experiment was conducted to evaluate the effects of biochar application on the morpho-physiological traits and yield of tomatoes under combined salinity and drought stress in greenhouses. There were 16 treatments consist two water quality fresh and saline (0.9 and 2.3 dS m-1), three deficit irrigation levels (DI) 80, 60, and 40% addition 100% of Evapotranspiration (ETc), and biochar application by rate 5% (BC5%) (w/w) and untreated soil (BC0%). The results indicated that the salinity and water deficit negatively affected morphological, physiological, and yield traits. In contrast, the application of biochar improved all traits. The interaction between biochar and saline water leads to decreased vegetative growth indices, leaf gas exchange, the relative water content of leaves (LRWC), photosynthetic pigments, and yield, especially with the water supply deficit (60 and 40% ETc), where the yield decreased by 42.48% under the highest water deficit at 40% ETc compared to the control. The addition of biochar with freshwater led to a significantly increased vegetative growth, physiological traits, yield, water use efficiency (WUE), and less proline content under all various water treatments compared to untreated soil. In general, biochar combined with DI and freshwater could improve morpho-physiological attributes, sustain the growth of tomato plants, and increase productivity in arid and semi-arid regions.
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Affiliation(s)
- Abdullah Obadi
- Plant Production Department, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdulaziz Alharbi
- Plant Production Department, King Saud University, Riyadh 11451, Saudi Arabia
| | | | | | - Ibrahim Louki
- Soil Science Department, King Saud University, Riyadh 11451, Saudi Arabia
| | - Arafat Alkhasha
- Soil Science Department, King Saud University, Riyadh 11451, Saudi Arabia
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Qian S, Zhou X, Fu Y, Song B, Yan H, Chen Z, Sun Q, Ye H, Qin L, Lai C. Biochar-compost as a new option for soil improvement: Application in various problem soils. Sci Total Environ 2023; 870:162024. [PMID: 36740069 DOI: 10.1016/j.scitotenv.2023.162024] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 01/09/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Due to the synergistic effects of biochar and compost/composting, the combined application of biochar and compost (biochar-compost) has been recognized as a highly promising and efficient method of soil improvement. However, the willingness to apply biochar-compost for soil improvement is still low compared to the use of biochar or compost alone. This paper collects data on the application of biochar-compost in several problem soils that are well-known and extensively investigated by agronomists and scientists, and summarizes the effects of biochar-compost application in common problem soils. These typical problem soils are classified based on three different characteristics: climatic zones, abiotic stresses, and contaminants. The improvement effect of biochar-compost in different soils is assessed and directions for further research and suggestions for application are made. Generally, biochar-compost mitigates the high mineralization rate of soil organic matter, phosphorus deficiency and aluminum toxicity, and significantly improves crop yields in most tropical soils. Biochar-compost can help to achieve long-term sustainable management of temperate agricultural soils by sequestering carbon and improving soil physicochemical properties. Biochar-compost has shown positive performance in the remediation of both dry and saline soils by reducing the threat of soil water scarcity or high salinity and improving the consequent deterioration of soil conditions. By combining different mechanisms of biochar and compost to immobilize or remove contaminants, biochar-compost tends to perform better than biochar or compost alone in soils contaminated with heavy metals (HMs) or organic pollutants (OPs). This review aims to improve the practicality and acceptability of biochar-compost and to promote its application in soil. Additionally, the prospects, challenges and future directions for the application of biochar-compost in problem soil improvement were foreseen.
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Affiliation(s)
- Shixian Qian
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Xuerong Zhou
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Yukui Fu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Biao Song
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Huchuan Yan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Zhexin Chen
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Qian Sun
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Haoyang Ye
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Lei Qin
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
| | - Cui Lai
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
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Védère C, Lebrun M, Biron P, Planchais S, Bordenave-Jacquemin M, Honvault N, Firmin S, Savouré A, Houben D, Rumpel C. The older, the better: Ageing improves the efficiency of biochar-compost mixture to alleviate drought stress in plant and soil. Sci Total Environ 2023; 856:158920. [PMID: 36181810 DOI: 10.1016/j.scitotenv.2022.158920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 09/05/2022] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
Due to increased drought frequency following climate change, practices improving water use efficiency and reducing water-stress are needed. The efficiency of organic amendments to improve plant growth conditions under drought is poorly known. Our aim was to investigate if organic amendments can attenuate plant water-stress due to their effect on the plant-soil system and if this effect may increase upon ageing. To this end we determined plant and soil responses to water shortage and organic amendments added to soil. We compared fresh biochar/compost mixtures to similar amendments after ageing in soil. Results indicated that amendment application induced few plant physiological responses under water-stress. The reduction of leaf gas exchange under watershortage was alleviated when plants were grown with biochar and compost amendments: stomatal conductance was least reduced with aged mixture aged mixture (-79 % compared to -87 % in control), similarly to transpiration (-69 % in control and not affected with aged mixture). Belowground biomass production (0.25 times) and nodules formation (6.5 times) were enhanced under water-stress by amendment addition. This effect was improved when grown on soil containing the aged as compared to fresh amendments. Plants grown with aged mixtures also showed reduced leaf proline concentrations (two to five times) compared to fresh mixtures indicating stress reduction. Soil enzyme activities were less affected by water-stress in soil with aged amendments. We conclude that the application of biochar-compost mixtures may be a solution to reduce the effect of water-stress to plants. Our findings revealed that this beneficial effect is expected to increase with aged mixtures, leading to a better water-stress resistance over time. However, while being beneficial for plant growth under water-stress, the use of amendments may not be suited to increase water use efficiency.
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Affiliation(s)
- Charlotte Védère
- National Institute for Agricultural Research, Ecosys Soil, UMR INRAE-AgroParisTech, 78820 Thiverval-Grignon, France.
| | - Manhattan Lebrun
- National Institute for Agricultural Research, Ecosys Soil, UMR INRAE-AgroParisTech, 78820 Thiverval-Grignon, France.
| | - Philippe Biron
- Institute of Ecology and Environmental Sciences, UMR 7618, CNRS-UPMC-UPEC-INRAE-IRD, Sorbonne University, 75005 Paris, France.
| | - Séverine Planchais
- Institute of Ecology and Environmental Sciences, UMR 7618, CNRS-UPMC-UPEC-INRAE-IRD, Sorbonne University, 75005 Paris, France.
| | - Marianne Bordenave-Jacquemin
- Institute of Ecology and Environmental Sciences, UMR 7618, CNRS-UPMC-UPEC-INRAE-IRD, Sorbonne University, 75005 Paris, France.
| | - Nicolas Honvault
- UniLaSalle, AGHYLE, 60026 Beauvais, France; Ecotron Européen de Montpellier, Univ Montpellier, CNRS, Montferrier sur Lez, France.
| | | | - Arnould Savouré
- Institute of Ecology and Environmental Sciences, UMR 7618, CNRS-UPMC-UPEC-INRAE-IRD, Sorbonne University, 75005 Paris, France.
| | | | - Cornelia Rumpel
- Institute of Ecology and Environmental Sciences, UMR 7618, CNRS-UPMC-UPEC-INRAE-IRD, Sorbonne University, 75005 Paris, France.
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Hasnain M, Munir N, Abideen Z, Zulfiqar F, Koyro HW, El-Naggar A, Caçador I, Duarte B, Rinklebe J, Yong JWH. Biochar-plant interaction and detoxification strategies under abiotic stresses for achieving agricultural resilience: A critical review. Ecotoxicol Environ Saf 2023; 249:114408. [PMID: 36516621 DOI: 10.1016/j.ecoenv.2022.114408] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 12/05/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
The unpredictable climatic perturbations, the expanding industrial and mining sectors, excessive agrochemicals, greater reliance on wastewater usage in cultivation, and landfill leachates, are collectively causing land degradation and affecting cultivation, thereby reducing food production globally. Biochar can generally mitigate the unfavourable effects brought about by climatic perturbations (drought, waterlogging) and degraded soils to sustain crop production. It can also reduce the bioavailability and phytotoxicity of pollutants in contaminated soils via the immobilization of inorganic and/or organic contaminants, commonly through surface complexation, electrostatic attraction, ion exchange, adsorption, and co-precipitation. When biochar is applied to soil, it typically neutralizes soil acidity, enhances cation exchange capacity, water holding capacity, soil aeration, and microbial activity. Thus, biochar has been was widely used as an amendment to ameliorate crop abiotic/biotic stress. This review discusses the effects of biochar addition under certain unfavourable conditions (salinity, drought, flooding and heavy metal stress) to improve plant resilience undergoing these perturbations. Biochar applied with other stimulants like compost, humic acid, phytohormones, microbes and nanoparticles could be synergistic in some situation to enhance plant resilience and survivorship in especially saline, waterlogged and arid conditions. Overall, biochar can provide an effective and low-cost solution, especially in nutrient-poor and highly degraded soils to sustain plant cultivation.
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Affiliation(s)
- Maria Hasnain
- Department of Biotechnology, Lahore College for Women University, Lahore, Pakistan
| | - Neelma Munir
- Department of Biotechnology, Lahore College for Women University, Lahore, Pakistan
| | - Zainul Abideen
- Dr. Muhammad Ajmal Khan Institute of Sustainable Halophyte Utilization, University of Karachi, 75270, Pakistan.
| | - Faisal Zulfiqar
- Department of Horticultural Sciences, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur 63100 Pakistan.
| | - Hans Werner Koyro
- Institute of Plant Ecology, Justus-Liebig-University Giessen, D-35392 Giessen, Germany
| | - Ali El-Naggar
- Department of Soil Sciences, Faculty of Agriculture, Ain Shams University, Cairo 11241, Egypt
| | - Isabel Caçador
- MARE-Marine and Environmental Sciences Centre & ARNET - Aquatic Research Network Associated Laboratory, Faculdade de Ciências da Universidade de Lisboa, Campo Grande 1749-016, Lisbon; Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Bernardo Duarte
- MARE-Marine and Environmental Sciences Centre & ARNET - Aquatic Research Network Associated Laboratory, Faculdade de Ciências da Universidade de Lisboa, Campo Grande 1749-016, Lisbon; Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water, and Waste-Management, Laboratory of Soil, and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany
| | - Jean Wan Hong Yong
- Department of Biosystems and Technology, Swedish University of Agricultural Sciences, Alnarp 23456, Sweden.
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Liu A, Yuan K, Li Q, Liu S, Li Y, Tao M, Xu H, Tian J, Guan S, Zhu W. Metabolomics and proteomics revealed the synthesis difference of aroma precursors in tobacco leaves at various growth stages. Plant Physiol Biochem 2022; 192:308-319. [PMID: 36288661 DOI: 10.1016/j.plaphy.2022.10.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/29/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Tobacco has a high economic value as the largest cash crop worldwide. The quality of flue-cured tobacco is closely related to the overall status of compounds in fresh tobacco leaves, and the aroma precursor plays a key role in the aroma quality of flue-cured tobacco. The untargeted metabolomics and label-free quantitative proteomics analysis of tobacco leaves in three growth stages (root stretching, prosperous growth, and maturation) retrieved 243 metabolites and 4313 proteins (944 differentially expressed proteins), which showed that carbohydrate, amino acid, and fatty acid metabolism varies among the three growth stages. Also, the most of amino acids, organic acids, fatty acids, and polyphenols reduced in the vegetative growth stage, while increased in the reproductive growth stage. On the other hand, alkaloids such as nicotine, nornicotine, and anatabine increased continuously in tobacco leaves during the three growth stages. This study helps us understand the growth and development characteristics of Yun87 flue-cured tobacco in the field before harvest, and it provides a certain omics basis for the industrial crop flue-cured tobacco.
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Affiliation(s)
- Amin Liu
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, 310027, PR China
| | - Kailong Yuan
- China Tobacco Zhejiang Industrial Co.,Ltd., Hangzhou, 310008, PR, China
| | - Qi Li
- China Tobacco Zhejiang Industrial Co.,Ltd., Hangzhou, 310008, PR, China
| | - Shengzhi Liu
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, 310027, PR China
| | - Yaohan Li
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, 310027, PR China
| | - Minglei Tao
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, 310027, PR China
| | - Haiqing Xu
- Anhui Wannan Tobacco Co., Ltd., Xuancheng, 242000, PR, China
| | - Jingkui Tian
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, 310002, PR, China
| | - Shishuan Guan
- China Tobacco Shandong Industrial Co., Ltd., Jinan, 250014, PR, China.
| | - Wei Zhu
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, 310002, PR, China.
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Laamarti M, Chemao-Elfihri MW, Essabbar A, Manni A, Kartti S, Alouane T, Temsamani L, Eljamali JE, Sbabou L, Ouadghiri M, Filali-Maltouf A, Belyamani L, Ibrahimi A. Genomic analysis of two Bacillus safensis isolated from Merzouga desert reveals desert adaptive and potential plant growth-promoting traits. Funct Integr Genomics 2022; 22:1173-1187. [PMID: 36175602 DOI: 10.1007/s10142-022-00905-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 11/04/2022]
Abstract
Deserts represent extreme environments for microorganisms, and conditions such as high soil salinity, nutrient deficiency, and increased levels of UV radiation make desert soil communities of high biotechnological potential. In this study, we isolated, sequenced, and assembled the genomes of Bacillus safensis strains BcP62 and Bcs93, to which we performed comparative genome analyses. Using the DDH and ANI of both strains with the available B. safensis genomes, we identified three potential subspecies within this group. Intra-species core genome phylogenetic analysis did not result in clustering genomes by niche type, with some exceptions. This study also revealed that the genomes of the analyzed strains possessed plant growth-promoting characteristics, most of which were conserved in all B. safensis strains. Furthermore, we highlight the genetic features of B. safensis BcP62 and Bcs93 related to survival in the Merzouga desert in Morocco. These strains could be potentially used in agriculture as PGPB in extreme environments, given their high tolerability to unfavorable conditions.
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Affiliation(s)
- Meriem Laamarti
- Biotechnology Lab (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed V University, Rabat, Morocco
| | - Mohammed Walid Chemao-Elfihri
- Biotechnology Lab (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed V University, Rabat, Morocco
| | - Abdelmounim Essabbar
- Biotechnology Lab (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed V University, Rabat, Morocco
| | - Amina Manni
- Laboratory of Microbiology and Molecular Biology, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Souad Kartti
- Biotechnology Lab (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed V University, Rabat, Morocco
| | - Tarek Alouane
- Biotechnology Lab (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed V University, Rabat, Morocco
| | - Loubna Temsamani
- Laboratory of Microbiology and Molecular Biology, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Jamal-Eddine Eljamali
- Laboratory of Microbiology and Molecular Biology, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Laila Sbabou
- Laboratory of Microbiology and Molecular Biology, Faculty of Sciences, Mohammed V University, Rabat, Morocco.,Université Mohamned VI des Sciences de la Santé (UM6SS), Casablanca, Morocco
| | - Mouna Ouadghiri
- Biotechnology Lab (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed V University, Rabat, Morocco
| | - Abdelkarim Filali-Maltouf
- Laboratory of Microbiology and Molecular Biology, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Lahcen Belyamani
- Université Mohamned VI des Sciences de la Santé (UM6SS), Casablanca, Morocco.,Emergency Department, Military Hospital Mohammed V, Rabat Medical & Pharmacy School, Mohammed V University, Rabat, Morocco
| | - Azeddine Ibrahimi
- Biotechnology Lab (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed V University, Rabat, Morocco. .,Université Mohamned VI des Sciences de la Santé (UM6SS), Casablanca, Morocco.
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Malik L, Sanaullah M, Mahmood F, Hussain S, Siddique MH, Anwar F, Shahzad T. Unlocking the potential of co-applied biochar and plant growth-promoting rhizobacteria (PGPR) for sustainable agriculture under stress conditions. Chem Biol Technol Agric 2022; 9:58. [PMID: 37520585 PMCID: PMC9395882 DOI: 10.1186/s40538-022-00327-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 08/06/2022] [Indexed: 05/14/2023]
Abstract
Sustainable food security is a major challenge in today's world, particularly in developing countries. Among many factors, environmental stressors, i.e., drought, salinity and heavy metals are major impediments in achieving sustainable food security. This calls for finding environment-friendly and cheap solutions to address these stressors. Plant growth-promoting rhizobacteria (PGPR) have long been established as an environment-friendly means to enhance agricultural productivity in normal and stressed soils and are being applied at field scale. Similarly, pyrolyzing agro-wastes into biochar with the aim to amend soils is being proposed as a cheap additive for enhancement of soil quality and crop productivity. Many pot and some field-scale experiments have confirmed the potential of biochar for sustainable increase in agricultural productivity. Recently, many studies have combined the PGPR and biochar for improving soil quality and agricultural productivity, under normal and stressed conditions, with the assumption that both of these additives complement each other. Most of these studies have reported a significant increase in agricultural productivity in co-applied treatments than sole application of PGPR or biochar. This review presents synthesis of these studies in addition to providing insights into the mechanistic basis of the interaction of the PGPR and biochar. Moreover, this review highlights the future perspectives of the research in order to realize the potential of co-application of the PGPR and biochar at field scale. Graphical Abstract
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Affiliation(s)
- Laraib Malik
- Department of Environmental Sciences, Government College University Faisalabad, Allama Iqbal Road, Faisalabad, 38000 Pakistan
| | - Muhammad Sanaullah
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Faisal Mahmood
- Department of Environmental Sciences, Government College University Faisalabad, Allama Iqbal Road, Faisalabad, 38000 Pakistan
| | - Sabir Hussain
- Department of Environmental Sciences, Government College University Faisalabad, Allama Iqbal Road, Faisalabad, 38000 Pakistan
| | - Muhammad Hussnain Siddique
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Allama Iqbal road, Faisalabad, Pakistan
| | - Faiza Anwar
- Department of Environmental Sciences, Government College University Faisalabad, Allama Iqbal Road, Faisalabad, 38000 Pakistan
| | - Tanvir Shahzad
- Department of Environmental Sciences, Government College University Faisalabad, Allama Iqbal Road, Faisalabad, 38000 Pakistan
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González-pernas FM, Grajera-antolín C, García-cámara O, González-lucas M, Martín MT, González-egido S, Aguirre JL. Effects of Biochar on Biointensive Horticultural Crops and Its Economic Viability in the Mediterranean Climate. Energies 2022; 15:3407. [DOI: 10.3390/en15093407] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The effects of biochar on different horticultural crops (lettuce, tomato, sweet pepper, and radish) were evaluated in the Mediterranean climate. Biochar was produced by pyrolysis of Pinus pinaster wood chips at 550 °C and used at 1 (B1) and 2 (B2) kg/m2 application rates on six 3.5 m2 plots in each treatment, with two control plots (B0). No fertilizer was used. Treatment B1 led to a significant increase (p < 0.01) of 35.4%, 98.1%, 28.4%, and 35.2% in the mean fresh weight of radishes, lettuce, tomatoes, and sweet peppers, respectively. Treatment B2 resulted in an improvement of 70.7% in radishes, 126.1% in lettuce, 38.4% in tomatoes, and 95.0% in sweet peppers (p < 0.01). Significant differences between treatments B1 and B2 were observed in the radish, tomato, and sweet pepper crops but not in lettuce. The profitability of biochar application to these crops was studied by considering a biochar price of 800 EUR/t and applying a CO2 fixation subsidy, assuming the updated February 2022 price (90 EUR/t). In lettuce, tomato, and sweet pepper crops, the investment payback period was approximately one year. Application of biochar generated economic benefit either from the first harvest or in the second year. In radish, this period was longer than two years; however, an increase in the annual frequency of cultivation should be studied to optimize the benefit. The dose that provided the greatest benefit was B1 (for all crops, except for sweet pepper). Biochar considerably improved fruit and vegetable yield under the Mediterranean climate; however, further studies are needed to assess the effects of biochar on soil properties and yield to estimate long-term environmental and economic benefits.
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Omara AED, Hafez EM, Osman HS, Rashwan E, El-Said MAA, Alharbi K, Abd El-Moneim D, Gowayed SM. Collaborative Impact of Compost and Beneficial Rhizobacteria on Soil Properties, Physiological Attributes, and Productivity of Wheat Subjected to Deficit Irrigation in Salt Affected Soil. Plants (Basel) 2022; 11:plants11070877. [PMID: 35406858 PMCID: PMC9002696 DOI: 10.3390/plants11070877] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 05/27/2023]
Abstract
Plant growth and crop productivity under unfavorable environmental challenges require a unique strategy to scavenge the severely negative impacts of these challenges such as soil salinity and water stress. Compost and plant growth-promoting rhizobacteria (PGPR) have many beneficial impacts, particularly in plants exposed to different types of stress. Therefore, a field experiment during two successive seasons was conducted to investigate the impact of compost and PGPR either separately or in a combination on exchangeable sodium percentage (ESP), soil enzymes (urease and dehydrogenase), wheat physiology, antioxidant defense system, growth, and productivity under deficient irrigation and soil salinity conditions. Our findings showed that exposure of wheat plants to deficit irrigation in salt-affected soil inhibited wheat growth and development, and eventually reduced crop productivity. However, these injurious impacts were diminished after soil amendment using the combined application of compost and PGPR. This combined application enhanced soil urease and dehydrogenase, ion selectivity, chlorophylls, carotenoids, stomatal conductance, and the relative water content (RWC) whilst reducing ESP, proline content, which eventually increased the yield-related traits of wheat plants under deficient irrigation conditions. Moreover, the coupled application of compost and PGPR reduced the uptake of Na and resulted in an increment in superoxide dismutase (SOD), catalase (CAT), and peroxidase (POX) activities that lessened oxidative damage and improved the nutrient uptake (N, P, and K) of deficiently irrigated wheat plants under soil salinity. It was concluded that to protect wheat plants from environmental stressors, such as water stress and soil salinity, co-application of compost with PGPR was found to be effective.
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Affiliation(s)
- Alaa El-Dein Omara
- Department of Microbiology, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza 12112, Egypt;
| | - Emad M. Hafez
- Department of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Hany S. Osman
- Department of Agricultural Botany, Faculty of Agriculture, Ain Shams University, Hadayek Shubra, Cairo 11241, Egypt
| | - Emadeldeen Rashwan
- Agronomy Department, Faculty of Agriculture, Tanta University, Tanta 31527, Egypt;
| | - Mohamed A. A. El-Said
- Department of Agronomy, Faculty of Agriculture, Al-Azhar University, Assiut 71524, Egypt;
| | - Khadiga Alharbi
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Diaa Abd El-Moneim
- Department of Plant Production (Genetic Branch), Faculty of Environmental Agricultural Sciences, Arish University, El-Arish 45511, Egypt;
| | - Salah M. Gowayed
- Department of Botany, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt;
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Ma H, Shurigin V, Jabborova D, dela Cruz JA, dela Cruz TE, Wirth S, Bellingrath-Kimura SD, Egamberdieva D. The Integrated Effect of Microbial Inoculants and Biochar Types on Soil Biological Properties, and Plant Growth of Lettuce ( Lactuca sativa L.). Plants (Basel) 2022; 11:423. [PMID: 35161404 PMCID: PMC8838139 DOI: 10.3390/plants11030423] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/30/2022] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Numerous reports confirm the positive effect of biochar application on soil properties and plant development. However, the interaction between root-associated beneficial microbes and different types of biochar is not well understood. The objective of this study was to evaluate the plant growth of lettuce after the application of three types of biochar in loamy, sandy soil individually and in combination with plant-beneficial microbes. Furthermore, total microbial activity in rhizosphere soil of lettuce was measured by means of fluorescein diacetate (FDA) hydrolase and enzyme activities linked to carbon, nitrogen, and phosphorus cycling. We used three types of biochar: (i) pyrolysis char from cherry wood (CWBC), (ii) pyrolysis char from wood (WBC), and (iii) pyrolysis char from maize (MBC) at 2% concentration. Our results showed that pyrolysis biochars positively affected plant interaction with microbial inoculants. Plant dry biomass grown on soil amended with MBC in combination with Klebsiella sp. BS13 and Klebsiella sp. BS13 + Talaromyces purpureogenus BS16aPP inoculants was significantly increased by 5.8% and 18%, respectively, compared to the control plants. Comprehensively, interaction analysis showed that the biochar effect on soil enzyme activities involved in N and P cycling depends on the type of microbial inoculant. Microbial strains exhibited plant growth-promoting traits, including the production of indole 3-acetic-acid and hydrogen cyanide and phosphate-solubilizing ability. The effect of microbial inoculant also depends on the biochar type. In summary, these findings provide new insights into the understanding of the interactions between biochar and microbial inoculants, which may affect lettuce growth and development.
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Affiliation(s)
- Hua Ma
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Vyacheslav Shurigin
- Faculty of Biology, National University of Uzbekistan, Tashkent 100174, Uzbekistan;
| | - Dilfuza Jabborova
- Institute of Genetics and Plant Experimental Biology, Academy of Sciences of Uzbekistan, Tashkent 111226, Uzbekistan;
| | - Jeane Aril dela Cruz
- Department of Biological Sciences, College of Science, University of Santo Tomas, Manila 1008, Philippines; (J.A.d.C.); (T.E.d.C.)
| | - Thomas Edison dela Cruz
- Department of Biological Sciences, College of Science, University of Santo Tomas, Manila 1008, Philippines; (J.A.d.C.); (T.E.d.C.)
- Fungal Biodiversity, Ecogenomics, and Systematics (FBeS) Group, Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila 1008, Philippines
| | - Stephan Wirth
- Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany; (S.W.); (S.D.B.-K.)
| | - Sonoko Dorothea Bellingrath-Kimura
- Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany; (S.W.); (S.D.B.-K.)
- Faculty of Life Science, Humboldt University of Berlin, 14195 Berlin, Germany
| | - Dilfuza Egamberdieva
- Faculty of Biology, National University of Uzbekistan, Tashkent 100174, Uzbekistan;
- Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany; (S.W.); (S.D.B.-K.)
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Hussain F, Khan AHA, Hussain I, Farooqi A, Muhammad YS, Iqbal M, Arslan M, Yousaf S. Soil conditioners improve rhizodegradation of aged petroleum hydrocarbons and enhance the growth of Lolium multiflorum. Environ Sci Pollut Res Int 2022; 29:9097-9109. [PMID: 34495472 DOI: 10.1007/s11356-021-16149-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
Bioremediation and phytoremediation have demonstrated potential for decontamination of petroleum hydrocarbon-impacted soils. The total petroleum hydrocarbons (TPHs) are known to induce phytotoxicity, reduce water retention in soil, associate hydrophobic nature and contaminants' in situ heterogeneous distribution, limit soil nutrient release and reduce soil aeration and compaction. The ageing of TPHs in contaminated soils further hinders the degradation process. Soil amendments can promote plant growth and enhance the TPH removal from contaminated aged soil. In the present experiment, remediation of TPH-contaminated aged soil was performed by Italian ryegrass, with compost (COM, 5%), biochar (BC, 5%) and immobilized microorganisms' technique (IMT). Results revealed that significantly highest hydrocarbon removal (40%) was noted in mixed amendments (MAA) which contained BC + COM + IMT, followed by COM (36%), compared to vegetative control and other treatments. The higher TPH removal in aged soil corresponds with the stimulated rhizospheric effects, as evidenced by higher root biomass (85-159% increase), and bacterial count compared to NA control. Phyto-stimulants actions of biochar and IMT improved seed germination of Italian ryegrass. The compost co-amendment with other treatments showed improvement in plant physiological status. These results suggested that plant growth and TPH removal from aged, contaminated soils using BC, COM and IMT can improve bioremediation efficiency.
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Affiliation(s)
- Fida Hussain
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
- Department of Biological Environment, Kangwon National University, Gangwon, 24341, South Korea
| | - Aqib Hassan Ali Khan
- Department of Earth and Environmental Sciences, Bahria University (Karachi Campus), Karachi, 75260, Pakistan
| | - Imran Hussain
- Environmental Sustainability Section, Sustainable Development Policy Institute, Islamabad, 44000, Pakistan
| | - Asifa Farooqi
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Yousaf Shad Muhammad
- Department of Statistics, Faculty of Natural Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Mazhar Iqbal
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Muhammad Arslan
- Department of Environmental Biotechnology, Helmholtz Centre for Environmental Research-UFZ, Permoserstraße 15, 04318, Leipzig, Germany
| | - Sohail Yousaf
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
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Fetjah D, Ainlhout LFZ, Idardare Z, Ihssane B, Bouqbis L. Effect of Banana-Waste Biochar and Compost Mixtures on Growth Responses and Physiological Traits of Seashore Paspalum Subjected to Six Different Water Conditions. Sustainability 2022; 14:1541. [DOI: 10.3390/su14031541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The effects of pyrolyzed agricultural waste generated from banana leaves on the development and physiological responses of Paspalum vaginatum in different water conditions were investigated. X-ray diffraction (XRD) and Fourier-transform infrared (FTIR) computations were utilized to describe the banana-waste biochar and determine the crystalline structure and functional groups. A plastic pot was used in two trials to examine the effectiveness of the studied biochar under two situations (well-watered Ww and limited-watered Lw). Seashore paspalum was cultivated in loam soil that had been modified with biochar as a single addition and a biochar compost mix. Six water scarcity scenarios were chosen (100, 80, 60, 25, 20, and 15% of water holding capacity (WHC) of the control soil). To analyze the varied responses of P. vaginatum in well-watered and limited-water environments, principal component analysis (PCA) was used. Under Ww, photosynthesis, biomass, fluorescence, and chlorophyll content increased, whereas, under Lw and control, they declined. Biochar and compost combinations enhanced the relative water content (RWC) more than biochar alone or in combination. Conversely, stomatal density in drought-stricken plants showed the reverse trend.
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Imran A, Sardar F, Khaliq Z, Nawaz MS, Shehzad A, Ahmad M, Yasmin S, Hakim S, Mirza BS, Mubeen F, Mirza MS. Tailored Bioactive Compost from Agri-Waste Improves the Growth and Yield of Chili Pepper and Tomato. Front Bioeng Biotechnol 2022; 9:787764. [PMID: 35141214 PMCID: PMC8819593 DOI: 10.3389/fbioe.2021.787764] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 12/07/2021] [Indexed: 12/11/2022] Open
Abstract
An extensive use of chemical fertilizers has posed a serious impact on food and environmental quality and sustainability. As the organic and biofertilizers can satisfactorily fulfill the crop’s nutritional requirement, the plants require less chemical fertilizer application; hence, the food is low in chemical residues and environment is less polluted. The agriculture crop residues, being a rich source of nutrients, can be used to feed the soil and crops after composting and is a practicable approach to sustainable waste management and organic agriculture instead of open-field burning of crop residues. This study demonstrates a feasible strategy to convert the wheat and rice plant residues into composted organic fertilizer and subsequent enrichment with plant-beneficial bacteria. The bioactive compost was then tested in a series of in vitro and in vivo experiments for validating its role in growing organic vegetables. The compost was enriched with a blend of micronutrients, such as zinc, magnesium, and iron, and a multi-trait bacterial consortium AAP (Azospirillum, Arthrobacter, and Pseudomonas spp.). The bacterial consortium AAP showed survival up to 180 days post-inoculation while maintaining their PGP traits. Field emission scanning electron microscopic analysis and fluorescence in situ hybridization (FISH) of bioactive compost further elaborated the morphology and confirmed the PGPR survival and distribution. Plant inoculation of this bioactive compost showed significant improvement in the growth and yield of chilies and tomato without any additional chemical fertilizer yielding a high value to cost ratio. An increase of ≈35% in chlorophyll contents, ≈25% in biomass, and ≈75% in yield was observed in chilies and tomatoes. The increase in N was 18.7 and 25%, while in P contents were 18.5 and 19% in chilies and tomatoes, respectively. The application of bioactive compost significantly stimulated the bacterial population as well as the phosphatase and dehydrogenase activities of soil. These results suggest that bioactive compost can serve as a source of bioorganic fertilizer to get maximum benefits regarding vegetable yield, soil quality, and fertilizer saving with the anticipated application for other food crops. It is a possible win-win situation for environmental sustainability and food security.
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Affiliation(s)
- Asma Imran
- Soil and Environmental Biotechnology Department, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
- *Correspondence: Asma Imran,
| | - Fozia Sardar
- Soil and Environmental Biotechnology Department, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Zabish Khaliq
- Soil and Environmental Biotechnology Department, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Muhammad Shoib Nawaz
- Soil and Environmental Biotechnology Department, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Atif Shehzad
- Soil and Environmental Biotechnology Department, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Muhammad Ahmad
- Soil and Environmental Biotechnology Department, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Sumera Yasmin
- Soil and Environmental Biotechnology Department, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Sughra Hakim
- Soil and Environmental Biotechnology Department, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Babur S. Mirza
- Department of Biology, Missouri State University, Springfield, MO, United States
| | - Fathia Mubeen
- Soil and Environmental Biotechnology Department, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Muhammad Sajjad Mirza
- Soil and Environmental Biotechnology Department, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
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Elbagory M, Farrag DK, Hashim AM, Omara AE. The Combined Effect of Pseudomonas stutzeri and Biochar on the Growth Dynamics and Tolerance of Lettuce Plants (Lactuca sativa) to Cadmium Stress. Horticulturae 2021; 7:430. [DOI: 10.3390/horticulturae7110430] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Agricultural activities lead to the accumulation of cadmium (Cd) in the soil. It is necessary to identify effective and economical ways to reduce the soil Cd bioavailability. To achieve this, three bacterial strains, Pseudomonas stutzeri, P. koreensis, and P. fluorescens, were tested for tolerance and biosorption of different concentrations of Cd (0, 5, 10, 15, 20, and 25 mg L−1). During the 2020 and 2021 seasons, a pot experiment was conducted using four different soil amendments (control, biochar, P. stutzeri, and a combination) under four levels of Cd (0, 40, 80, and 120 mg kg−1) and assessing the effect on growth parameters, physiological modifications, antioxidant enzymes, and Cd accumulation in lettuce plants (Lactuca sativa cv. Balady). In vitro, the results showed that P. stutzeri was the most tolerant of Cd. Our findings in pot trials showed that T4 (biochar + P. stutzeri) was a more efficient treatment in terms of the growth parameters, with 452.00 g plant−1 was recorded for fresh weight, 40.10 g plant−1 for dry weight, 18.89 cm plant−1 for plant height, 6.03 cm2 for leaf area, and 20.48 for the number of leaves plant−1, while in terms of physiological characteristics, we recorded 1.29 mg g−1 FW, 0.35 μg g−1 FW, and 3.69 μg g−1 FW for total chlorophyll, carotenoids, and total soluble sugar, respectively; this was also reflected in the number of antioxidant enzymes and intensity of soil biological activities in soil treated with 120 mg kg−1 Cd compared with the control and other treatments in the first season. A similar trend was observed in the second season. Additionally, significantly lower Cd was observed in both the root (67%) and shoots (78%). Therefore, a combined application of biochar and P. stutzeri could be used as an alternative to mitigate Cd toxicity.
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Nafees M, Ullah S, Ahmed I. Morphological and elemental evaluation of biochar through analytical techniques and its combined effect along with plant growth promoting rhizobacteria on Vicia faba L. under induced drought stress. Microsc Res Tech 2021; 84:2947-2959. [PMID: 34196062 DOI: 10.1002/jemt.23854] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/22/2021] [Accepted: 06/08/2021] [Indexed: 11/07/2022]
Abstract
Drought is a persistent and complex natural vulnerability whose rate and extent of recurrence are expected to increase with climate change. Regardless of the progress made in responding and adapting to water scarcity, drought stress causes severe afflictions. Therefore, the present study has been accomplished in Department of Botany, University of Peshawar to investigate the effect of biochar and plant growth promoting rhizobacteria (PGPR) Cellulomonas pakistanensis (NCCP11) and Sphingobacterium pakistanensis (NCCP246) on Vicia faba under drought stress. Two varieties of seeds Desi (V1) and Pulista (V2) were obtained from Cereal Crop Research Institute (CCRI) Nowshera, sown in earthen pots in triplicate filled with 3 kg soil and sand (2:1) and biochar (0 and 5% w/w). Scanning electron microscopy of biochar showed porous nature and energy dispersive x-ray spectroscopy spectroscopy showed C, Ca, Mg, and Na elemental composition. Germination parameters including germination energy (GE), Timson germination index (TGI), germination index (GI), and water use efficiency (WUE) were amplified to 28.04, 19.17, 25.72, and 43.62% in V1, respectively, and 14.38, 16.66, 19.79, and 41.50% in V2 respectively, by the co-application of biochar and PGPR. Agronomical attributes including, fresh and dry weight of leaves, root, and shoot were significantly reduced, which were positively ameliorated by 28.57, 36.36, 16, 10.47, 14.28, and 10%, respectively, by the application of biochar and PGPR especially by NCCP246 in combination as well as individually. It has been concluded that, adversities of drought significantly condensed with the application of biochar and PGPR, which may be important in agricultural practices carried out in water-deficient regions.
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Affiliation(s)
- Muhammad Nafees
- Department of Botany, University of Peshawar, Peshawar, Pakistan
| | - Sami Ullah
- Department of Botany, University of Peshawar, Peshawar, Pakistan
| | - Iftikhar Ahmed
- National Culture Collection of Pakistan (NCCP), Bio-resources Conservation Institute (BCI), National Agriculture Research Centre (NARC), Islamabad, Pakistan
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Videgain-Marco M, Marco-Montori P, Martí-Dalmau C, Jaizme-Vega MDC, Manyà-Cervelló JJ, García-Ramos FJ. The Effects of Biochar on Indigenous Arbuscular Mycorrhizae Fungi from Agroenvironments. Plants (Basel) 2021; 10:plants10050950. [PMID: 34068692 PMCID: PMC8150396 DOI: 10.3390/plants10050950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/28/2021] [Accepted: 05/04/2021] [Indexed: 11/16/2022]
Abstract
The effects of biochar on soil–plant–microorganisms systems are currently being extensively investigated. Considering that arbuscular mycorrhizal fungi (AMF) play an essential role in nutrient dynamics, the present study aims at understanding vine shoot-derived biochar effects on AMF activity and the impact of their multiplication in soils on water-stress resistance of plants. Three agronomic tests were performed in greenhouse pots. The first experiment evaluated the effects of three factors: final pyrolysis temperature for biochar production (400 °C and 600 °C), application rate (0 weight-wt.- % as a control, 1.5 wt. %, and 3.0 wt. %) and texture of the growing media (sandy-loam and clay-loam origin) on AMF, microbial communities and phosphatase activity. In the second experiment, an indigenous consortium of AMF was multiplied through the solid substrate method and sorghum as a trap plant with biochar addition. This process was compared to a control treatment without biochar. Obtained inocula were tested in a third experiment with lettuce plants under different water irrigation conditions. Results from the first experiment showed a general increase in AMF activity with the addition of the biochar produced at 400 °C in the sandy-loam texture substrate. Results of the second experiment showed that the biochar addition increased AMF root colonization, the number of AMF spores and AMF infective potential. Results of the third experiment showed that biochar-derived AMF inoculum increased AMF root colonization, AMF spores, dry biomass and the SPAD index in a lettuce crop under low-water irrigation conditions.
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Affiliation(s)
- María Videgain-Marco
- Departamento de Ciencias Agrarias y del Medio Natural, EPS, Universidad de Zaragoza, Carretera de Cuarte s/n, E-22071 Huesca, Spain; (C.M.-D.); (F.J.G.-R.)
- Correspondence: ; Tel.: +34-974292656
| | - Pedro Marco-Montori
- Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Instituto Agroalimentario de Aragón—IA2 (CITA-Universidad de Zaragoza), Unidad de Recursos Forestales, Avenida Montañana 930, E-50059 Zaragoza, Spain;
| | - Clara Martí-Dalmau
- Departamento de Ciencias Agrarias y del Medio Natural, EPS, Universidad de Zaragoza, Carretera de Cuarte s/n, E-22071 Huesca, Spain; (C.M.-D.); (F.J.G.-R.)
| | - María del Carmen Jaizme-Vega
- Departamento de Protección Vegetal, Instituto Canario de Investigaciones Agrarias (ICIA), Carretera de El Boquerón s/n, Valle Guerra, La Laguna, E-38270 Tenerife, Spain;
| | - Joan Josep Manyà-Cervelló
- Thermochemical Processes Group, Aragón Institute of Engineering Research (I3A), EPS, University of Zaragoza, Carretera de Cuarte s/n, E-22071 Huesca, Spain;
| | - Francisco Javier García-Ramos
- Departamento de Ciencias Agrarias y del Medio Natural, EPS, Universidad de Zaragoza, Carretera de Cuarte s/n, E-22071 Huesca, Spain; (C.M.-D.); (F.J.G.-R.)
- Instituto Agroalimentario de Aragón—IA2 (CITA-Universidad de Zaragoza), EPS, Universidad de Zaragoza, Carretera de Cuarte s/n, E-22071 Huesca, Spain
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Rehman I, Riaz M, Ali S, Arif MS, Ali S, Alyemeni MN, Alsahli AA. Evaluating the Effects of Biochar with Farmyard Manure under Optimal Mineral Fertilizing on Tomato Growth, Soil Organic C and Biochemical Quality in a Low Fertility Soil. Sustainability 2021; 13:2652. [DOI: 10.3390/su13052652] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Biochar amendments are widely recognized to improve crop productivity and soil biogeochemical quality, however, their effects on vegetable crops are less studied. This pot study investigated the effects of cotton stick, corncob and rice straw biochars alone and with farmyard manure (FYM) on tomato growth, soil physico–chemical and biological characteristics, soil organic carbon (SOC) content and amount of soil nutrients under recommended mineral fertilizer conditions in a nutrient-depleted alkaline soil. Biochars were applied at 0, 1.5 and 3% (w/w, basis) rates and FYM was added at 0 and 30 t ha−1 rates. Biochars were developed at 450 °C pyrolysis temperature and varied in total organic C, nitrogen (N), phosphorus (P) and potassium (K) contents. The results showed that biochars, their amounts and FYM significantly improved tomato growth which varied strongly among the biochar types, amounts and FYM. With FYM, the addition of 3% corncob biochar resulted in the highest total chlorophyll contents (9.55 ug g−1), shoot (76.1 cm) and root lengths (44.7 cm), and biomass production. Biochars with and without FYM significantly increased soil pH, electrical conductivity (EC) and cation exchange capacity (CEC). The soil basal respiration increased with biochar for all biochars but not consistently after FYM addition. The water-extractable organic C (WEOC) and soil organic C (SOC) contents increased significantly with biochar amount and FYM, with the highest SOC found in the soil that received 3% corncob biochar with FYM. Microbial biomass C (MBC), N (MBN) and P (MBP) were the highest in corncob biochar treated soils followed by cotton stick and rice straw biochars. The addition of 3% biochars along with FYM also showed significant positive effects on soil mineral N, P and K contents. The addition of 3% corncob biochar with and without FYM always resulted in higher soil N, P and K contents at the 3% rate. The results further revealed that the positive effects of biochars on above-ground plant responses were primarily due to the improvements in below-ground soil properties, nutrients’ availability and SOC; however, these effects varied strongly between biochar types. Our study concludes that various biochars can enhance tomato production, soil biochemical quality and SOC in nutrient poor soil under greenhouse conditions. However, we emphasize that these findings need further investigations using long-term studies before adopting biochar for sustainable vegetable production systems.
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Vishwakarma K, Kumar N, Shandilya C, Mohapatra S, Bhayana S, Varma A. Revisiting Plant-Microbe Interactions and Microbial Consortia Application for Enhancing Sustainable Agriculture: A Review. Front Microbiol 2020; 11:560406. [PMID: 33408698 PMCID: PMC7779480 DOI: 10.3389/fmicb.2020.560406] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 11/23/2020] [Indexed: 12/20/2022] Open
Abstract
The present scenario of agricultural sector is dependent hugely on the use of chemical-based fertilizers and pesticides that impact the nutritional quality, health status, and productivity of the crops. Moreover, continuous release of these chemical inputs causes toxic compounds such as metals to accumulate in the soil and move to the plants with prolonged exposure, which ultimately impact the human health. Hence, it becomes necessary to bring out the alternatives to chemical pesticides/fertilizers for improvement of agricultural outputs. The rhizosphere of plant is an important niche with abundant microorganisms residing in it. They possess the properties of plant growth promotion, disease suppression, removal of toxic compounds, and assimilating nutrients to plants. Utilizing such beneficial microbes for crop productivity presents an efficient way to modulate the crop yield and productivity by maintaining healthy status and quality of the plants through bioformulations. To understand these microbial formulation compositions, it becomes essential to understand the processes going on in the rhizosphere as well as their concrete identification for better utilization of the microbial diversity such as plant growth–promoting bacteria and arbuscular mycorrhizal fungi. Hence, with this background, the present review article highlights the plant microbiome aboveground and belowground, importance of microbial inoculants in various plant species, and their subsequent interactive mechanisms for sustainable agriculture.
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Affiliation(s)
| | - Nitin Kumar
- Department of Biotechnology, Periyar Maniammai Institute of Science and Technology, Thanjavur, India
| | | | - Swati Mohapatra
- Amity Institute of Microbial Technology, Amity University, Noida, India
| | - Sahil Bhayana
- Amity Institute of Microbial Technology, Amity University, Noida, India
| | - Ajit Varma
- Amity Institute of Microbial Technology, Amity University, Noida, India
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23
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Danish S, Zafar-ul-hye M, Fahad S, Saud S, Brtnicky M, Hammerschmiedt T, Datta R. Drought Stress Alleviation by ACC Deaminase Producing Achromobacter xylosoxidans and Enterobacter cloacae, with and without Timber Waste Biochar in Maize. Sustainability 2020; 12:6286. [DOI: 10.3390/su12156286] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The high consumption of water in industries, domestic areas and increasing earth temperature are major hurdles for the optimization of maize yield. Being the third most widely cultivated cereal crop, improvement in maize yield is a big challenge under the limited availability of irrigation. As the water requirement for maize cultivation is high, it is time to introduce technologies that can mitigate drought stress and are environmentally friendly. The inoculation of rhizobacteria with ‘1-aminocyclopropane-1-carboxylate deaminase’ (ACCD) can play an imperative role in that regard by decreasing stress ethylene in plants. Biochar (BC) can also alleviate drought stress. Therefore, a field study was conducted, to examine the single and combined application of drought-tolerant plant-growth-promoting rhizobacteria (PGPRs) Achromobacter xylosoxidans and Enterobacter cloacae, with 15 Mg ha−1 of timber waste biochar (TWBC) at normal irrigation = 16 irrigations, mild drought = 14 irrigations and severe drought = 12 irrigation for maize cultivation. A significant improvement in shoot dry weight (28%), 1000-grains weight (19%), grain yield (27%), concentrations of N (43%), P (92%) and K (71%) in grains, rate of photosynthesis (33%), transpiration rate (55%), stomatal conductance (104%), chlorophyll A (33%), chlorophyll B (62%) and total chlorophyll (45%) of maize was noted under drought stress where E. cloacae + TWBC was applied. Likewise, the application of A. xylosoxidans + TWBC also significantly enhanced the plant height (24%) and cob length (9%) of maize under drought stress. In conclusion, E. cloacae is more effective than A. xylosoxidans, with 15 Mg ha−1 TWBC to increase maize yield under drought stress, due to the potential of higher ‘1-aminocyclopropane-1-carboxylate’ (ACC)-deaminase synthesis, better nutrient solubilization and indole acetic acid (IAA) production.
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Iqbal A, Mushtaq MU, Khan AHA, Nawaz I, Yousaf S, Iqbal M. Influence of Pseudomonas japonica and organic amendments on the growth and metal tolerance of Celosia argentea L. Environ Sci Pollut Res Int 2020; 27:24671-24685. [PMID: 31428967 DOI: 10.1007/s11356-019-06181-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
In this study, a pot experiment was piloted in a greenhouse to evaluate the potential of Celosia argentea var. cristata L. for tolerating/accumulating heavy metals in synthetic wastewater in the presence of Pseudomonas japonica and organic amendment, i.e., moss and compost. Two-week-old seedlings were transferred to pots, and after 4 weeks, the bacterial strain was inoculated, then watered with synthetic wastewater for 5 weeks and harvested after 9 weeks. After harvesting, physiological and biochemical parameters, as well as metal contents of plants, were quantified. The results indicated highest growth and biomass production in moss- and compost-associated plants while highest metal uptake has been found in the presence of P. japonica and synthetic wastewater-irrigated plants. Synthetic wastewater-irrigated plants have shown highest Pb uptake of 2899 mg kg-1 DW, while with P. japonica in soil those plants have shown highest Cd, Cu, Ni, and Cr uptake of 962, 1479, 1042, and 956 mg kg-1 DW, respectively. The production of antioxidant enzymes, i.e., catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (GPX), and glutathione-s-transferase (GST), was high in P. japonica-amended plants because of increased uptake of metals. It is concluded that moss and compost have improved growth while P. japonica improved metal accumulation and translocation to aerial parts with little involvement in plant growth.
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Affiliation(s)
- Ameena Iqbal
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Muhammad Umair Mushtaq
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Aqib Hassan Ali Khan
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Ismat Nawaz
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
| | - Sohail Yousaf
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Mazhar Iqbal
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
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25
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Yan S, Niu Z, Yan H, Zhang A, Liu G. Influence of Soil Organic Carbon on the Aroma of Tobacco Leaves and the Structure of Microbial Communities. Curr Microbiol 2020; 77:931-942. [PMID: 31982968 DOI: 10.1007/s00284-020-01895-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/18/2020] [Indexed: 11/25/2022]
Abstract
The soil organic carbon is associated with the plant quality and the microbial community structure. In the present study, carbon fertilizers were applied to paddy soil to elucidate the relationship between soil carbon and neutral aroma substances in both tobacco and soil microbiome by transcriptome sequencing and 16S rDNA-based analysis, respectively. Our results showed that (1) the increase in soil carbon content was closely correlated with the abundance of microorganisms belonging to two classes (which could potentially affect tobacco plants), namely Gammaproteobacteria and Chloroflexia, (2) soil carbon apparently affected tobacco neutral aroma substances, and (3) soil carbon improved neutral aroma substances by affecting the transcriptional processes of sesquiterpenoid and chlorophyll biosyntheses. These results suggest that increased soil carbon-especially active organic carbon-resulted in desirable improvements in aroma substances in tobacco leaves.
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Affiliation(s)
- Shen Yan
- Department of Tobacco Cultivation, College of Tobacco Science, Henan Agricultural University, Henan Province, Zhengzhou, 450002, China
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 450002, China
- Henan Biochar Technology Engineering Laboratory, Zhengzhou, 450002, China
- Department of Microbiology, College of Agriculture and Life Science, Cornell University, Ithaca, NY, 14853, USA
| | - Zhengyang Niu
- Department of Tobacco Cultivation, College of Tobacco Science, Henan Agricultural University, Henan Province, Zhengzhou, 450002, China
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 450002, China
- Henan Biochar Technology Engineering Laboratory, Zhengzhou, 450002, China
| | - Haitao Yan
- Department of Tobacco Cultivation, College of Tobacco Science, Henan Agricultural University, Henan Province, Zhengzhou, 450002, China
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 450002, China
- Henan Biochar Technology Engineering Laboratory, Zhengzhou, 450002, China
| | - Aigai Zhang
- Department of Tobacco Cultivation, College of Tobacco Science, Henan Agricultural University, Henan Province, Zhengzhou, 450002, China
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 450002, China
- Henan Biochar Technology Engineering Laboratory, Zhengzhou, 450002, China
| | - Guoshun Liu
- Department of Tobacco Cultivation, College of Tobacco Science, Henan Agricultural University, Henan Province, Zhengzhou, 450002, China.
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 450002, China.
- Henan Biochar Technology Engineering Laboratory, Zhengzhou, 450002, China.
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Akhtar SS, Amby DB, Hegelund JN, Fimognari L, Großkinsky DK, Westergaard JC, Müller R, Moelbak L, Liu F, Roitsch T. Bacillus licheniformis FMCH001 Increases Water Use Efficiency via Growth Stimulation in Both Normal and Drought Conditions. Front Plant Sci 2020; 11:297. [PMID: 32318078 PMCID: PMC7155768 DOI: 10.3389/fpls.2020.00297] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 02/27/2020] [Indexed: 05/21/2023]
Abstract
Increasing agricultural losses due to biotic and abiotic stresses caused by climate change challenge food security worldwide. A promising strategy to sustain crop productivity under conditions of limited water availability is the use of plant growth promoting rhizobacteria (PGPR). Here, the effects of spore forming Bacillus licheniformis (FMCH001) on growth and physiology of maize (Zea mays L. cv. Ronaldinho) under well-watered and drought stressed conditions were investigated. Pot experiments were conducted in the automated high-throughput phenotyping platform PhenoLab and under greenhouse conditions. Results of the PhenoLab experiments showed that plants inoculated with B. licheniformis FMCH001 exhibited increased root dry weight (DW) and plant water use efficiency (WUE) compared to uninoculated plants. In greenhouse experiments, root and shoot DW significantly increased by more than 15% in inoculated plants compared to uninoculated control plants. Also, the WUE increased in FMCH001 plants up to 46% in both well-watered and drought stressed plants. Root and shoot activities of 11 carbohydrate and eight antioxidative enzymes were characterized in response to FMCH001 treatments. This showed a higher antioxidant activity of catalase (CAT) in roots of FMCH001 treated plants compared to uninoculated plants. The higher CAT activity was observed irrespective of the water regime. These findings show that seed coating with Gram positive spore forming B. licheniformis could be used as biostimulants for enhancing plant WUE under both normal and drought stress conditions.
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Affiliation(s)
- Saqib Saleem Akhtar
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Taastrup, Denmark
| | - Daniel Buchvaldt Amby
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Taastrup, Denmark
| | - Josefine Nymark Hegelund
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Taastrup, Denmark
| | | | - Dominik K. Großkinsky
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Taastrup, Denmark
| | - Jesper Cairo Westergaard
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Taastrup, Denmark
| | - Renate Müller
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Taastrup, Denmark
| | - Lars Moelbak
- Plant Health Innovation, Chr-Hansen A/S, Hørsholm, Denmark
| | - Fulai Liu
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Taastrup, Denmark
| | - Thomas Roitsch
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Taastrup, Denmark
- Department of Adaptive Biotechnologies, Global Change Research Institute, Czech Academy of Sciences, Brno, Czechia
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27
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Abideen Z, Koyro HW, Huchzermeyer B, Ansari R, Zulfiqar F, Gul B. Ameliorating effects of biochar on photosynthetic efficiency and antioxidant defence of Phragmites karka under drought stress. Plant Biol (Stuttg) 2020; 22:259-266. [PMID: 31618504 DOI: 10.1111/plb.13054] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 09/27/2019] [Indexed: 05/21/2023]
Abstract
Biochar (BC) has been reported to improve growth and drought resistance in many plants. However, adequate information on the drought resistance mechanism mediated of BC on Phragmites karka, a bioenergy plant, is not available. The impact of BC addition (0%, 0.75% and 2.5%) on plant growth and physiology of P. karka under drought was assessed. Soil water-holding capacity and soil water content were significantly improved with 0.75% BC as compared with the un-amended controls. This resulted in improved plant performance under drought conditions. An increase of parameters, such as plant fresh and dry biomass, root to shoot ratio and root mass fraction, was paralleled by an increase of chlorophyll content, net photosynthesis rate and water use efficiency of plants. Plants treated with 0.75% BC experienced less oxidative stress due to higher photosystem II efficiency and stimulated activity of antioxidant defense systems. Our results demonstrate that soil amendment with 0.75% BC allow the potential energy plant P. karka to grow in an arid habitat.
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Affiliation(s)
- Z Abideen
- Dr. Muhammad Ajmal Khan Institute of Sustainable Halophyte Utilization, University of Karachi, Karachi, Pakistan
- Institute of Plant Ecology, Justus-Liebig-University Giessen, Giessen, Germany
- Institute of Botany, Gottfried Wilhelm Leibniz University, Herrenhäuser, Hannover, Germany
| | - H-W Koyro
- Institute of Plant Ecology, Justus-Liebig-University Giessen, Giessen, Germany
| | - B Huchzermeyer
- Institute of Botany, Gottfried Wilhelm Leibniz University, Herrenhäuser, Hannover, Germany
| | - R Ansari
- Dr. Muhammad Ajmal Khan Institute of Sustainable Halophyte Utilization, University of Karachi, Karachi, Pakistan
| | - F Zulfiqar
- Institute of Horticultural Sciences, University of Agriculture, Faisalabad, Pakistan
| | - B Gul
- Dr. Muhammad Ajmal Khan Institute of Sustainable Halophyte Utilization, University of Karachi, Karachi, Pakistan
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28
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Akhtar SS, Mekureyaw MF, Pandey C, Roitsch T. Role of Cytokinins for Interactions of Plants With Microbial Pathogens and Pest Insects. Front Plant Sci 2020; 10:1777. [PMID: 32140160 PMCID: PMC7042306 DOI: 10.3389/fpls.2019.01777] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 12/19/2019] [Indexed: 05/05/2023]
Abstract
It has been recognized that cytokinins are plant hormones that influence not only numerous aspects of plant growth, development and physiology, including cell division, chloroplast differentiation and delay of senescence but the interaction with other organisms, including pathogens. Cytokinins are not only produced by plants but are also by other prokaryotic and eukaryotic organism such as bacteria, fungi, microalgae and insects. Notably, cytokinins are produced both by pathogenic and also beneficial microbes and are known to induce resistance in plants against pathogen infections. In this review the contrasting role of cytokinin for the defence and susceptibility of plants against bacterial and fungal pathogen and pest insects is assessed. We also discuss the cross talk of cytokinins with other phytohormones and the underlying mechanism involved in enhancing plant immunity against pathogen infections and explore possible practical applications in crop plant production.
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Affiliation(s)
- Saqib Saleem Akhtar
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mengistu F. Mekureyaw
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Chandana Pandey
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Thomas Roitsch
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Adaptive Biotechnologies, Global Change Research Institute, CAS, Brno, Czechia
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29
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Bokhari A, Essack M, Lafi FF, Andres-Barrao C, Jalal R, Alamoudi S, Razali R, Alzubaidy H, Shah KH, Siddique S, Bajic VB, Hirt H, Saad MM. Bioprospecting desert plant Bacillus endophytic strains for their potential to enhance plant stress tolerance. Sci Rep 2019; 9:18154. [PMID: 31796881 PMCID: PMC6890672 DOI: 10.1038/s41598-019-54685-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 11/13/2019] [Indexed: 12/13/2022] Open
Abstract
Plant growth-promoting bacteria (PGPB) are known to increase plant tolerance to several abiotic stresses, specifically those from dry and salty environments. In this study, we examined the endophyte bacterial community of five plant species growing in the Thar desert of Pakistan. Among a total of 368 culturable isolates, 58 Bacillus strains were identified from which the 16 most divergent strains were characterized for salt and heat stress resilience as well as antimicrobial and plant growth-promoting (PGP) activities. When the 16 Bacillus strains were tested on the non-host plant Arabidopsis thaliana, B. cereus PK6-15, B. subtilis PK5-26 and B. circulans PK3-109 significantly enhanced plant growth under salt stress conditions, doubling fresh weight levels when compared to uninoculated plants. B. circulans PK3-15 and PK3-109 did not promote plant growth under normal conditions, but increased plant fresh weight by more than 50% when compared to uninoculated plants under salt stress conditions, suggesting that these salt tolerant Bacillus strains exhibit PGP traits only in the presence of salt. Our data indicate that the collection of 58 plant endophytic Bacillus strains represents an important genomic resource to decipher plant growth promotion at the molecular level.
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Affiliation(s)
- Ameerah Bokhari
- King Abdullah University of Science and Technology (KAUST), Center for Desert Agriculture, Thuwal, 23955-6900, Kingdom of Saudi Arabia.,Exploration and Petroleum Engineering Center - Advanced Research Center (EXPEC ARC), Saudi Aramco, Dhahran, Saudi Arabia
| | - Magbubah Essack
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Feras F Lafi
- King Abdullah University of Science and Technology (KAUST), Center for Desert Agriculture, Thuwal, 23955-6900, Kingdom of Saudi Arabia.,Zayed University, College of Natural and Health Sciences, Abu-Dhabi, 144534, United Arab Emirates
| | - Cristina Andres-Barrao
- King Abdullah University of Science and Technology (KAUST), Center for Desert Agriculture, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Rewaa Jalal
- King Abdullah University of Science and Technology (KAUST), Center for Desert Agriculture, Thuwal, 23955-6900, Kingdom of Saudi Arabia.,University of Jeddah, P-O-BOX No.80327, Jeddah, 21589, Saudi Arabia
| | - Soha Alamoudi
- King Abdulaziz University, Science and Arts College, Department of Biology, Rabigh, 21589, Kingdom of Saudi Arabia
| | - Rozaimi Razali
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Hanin Alzubaidy
- King Abdullah University of Science and Technology (KAUST), Center for Desert Agriculture, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Kausar H Shah
- Bahauddin Zakariya University, Institute of Pure and Applied Biology, Multan, 60800, Pakistan
| | - Shahid Siddique
- UC Davis, Department of Entomology and Nematology, One Shields Avenue, Davis, USA
| | - Vladimir B Bajic
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Heribert Hirt
- King Abdullah University of Science and Technology (KAUST), Center for Desert Agriculture, Thuwal, 23955-6900, Kingdom of Saudi Arabia. .,Max F. Perutz Laboratories, University of Vienna, Dr. Bohrgasse 9, 1030, Vienna, Austria.
| | - Maged M Saad
- King Abdullah University of Science and Technology (KAUST), Center for Desert Agriculture, Thuwal, 23955-6900, Kingdom of Saudi Arabia
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Chrysargyris, Prasad, Kavanagh, Tzortzakis. Biochar Type and Ratio as a Peat Additive/Partial Peat Replacement in Growing Media for Cabbage Seedling Production. Agronomy 2019; 9:693. [DOI: 10.3390/agronomy9110693] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Biochar has been proposed mainly as a soil amendment, positively affecting plant growth/yield, and to a lesser degree for growing media. In this study, four commercial grade biochars (A-forest wood; B-husks and paper fiber; C-bamboo and D-fresh wood screening), mostly wood-based materials, were selected. Initial mixtures of peat (P) with different Biochar type and ratios (0-5-10-15-20%) were selected for cabbage seedling production. Biochar material had high K content and pH ≥ 8.64 which resulted in increased pH of the growing media. Biochar A and C at 20% reduced cabbage seed emergence. Biochar A, B and D maintained or improved plant growth at low ratio (i.e., 5–10%) while all Biochars increased N, K and P content in leaves. Biochars A and D were further examined at 7.5% and 15% with the addition of two doses of minerals (1-fold and 1.5-fold). Biochar A and D, initially stimulated seed emergence when compared to the control. High dose of fertilizer favored plant growth in Biochar A at 7.5% and Biochar D at 15%. Leaf stomatal conductance was decreased at Biochar A+Fert at 7.5% and Chlorophyll b content was decreased at Biochar A+Fert at 15%. The presence of Biochar A increased the antioxidant activity (as assayed by 2,2-diphenyl-1-picrylhydrazyl-DPPH). Lipid peroxidation was higher in plants grown with fertilized peat and Biochar A at 15%, activating antioxidant enzymatic metabolisms. Potassium, phosphorous and copper accumulation and magnesium deficiency in cabbage leaves were related to the Biochar presence. Wooden biochar of beech, spruce and pine species (Biochar A) at 7.5% and fertilized biochar of fruit trees and hedges (Biochar D) were more promising for peat replacement for cabbage seedling production.
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31
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Meschewski E, Holm N, Sharma BK, Spokas K, Minalt N, Kelly JJ. Pyrolysis biochar has negligible effects on soil greenhouse gas production, microbial communities, plant germination, and initial seedling growth. Chemosphere 2019; 228:565-576. [PMID: 31055071 DOI: 10.1016/j.chemosphere.2019.04.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 04/01/2019] [Accepted: 04/04/2019] [Indexed: 05/21/2023]
Abstract
Biochar has been promoted as a soil amendment that enhances soil quality and agronomic productivity and reduces greenhouse gas production. However, these benefits are not always realized. A major hurdle to the beneficial use of biochar is our limited knowledge regarding the mechanisms directing its effects on soil systems. This project aimed to eliminate some of this uncertainty by examining the biological responses (plant productivity, greenhouse gas production, soil microbial community structure) of a suite of soils (10) to the addition of biochars produced by different processes (pyrolysis, gasification, burning) from a range of feedstocks (corn stalks, hardwood, grass). Results indicated that these three responses were not significantly impacted by the addition of pyrolysis biochars from different feedstocks at 1 and 5% (w/w) addition levels. On the other hand, both an open-air burned corn stalk (5%) and raw corn stalks (1 and 5%) additions did alter the measured soil functionality. For example, the 5% burnt corn stalks addition reduced total above ground plant biomass (∼30%), increased observed N2O production by an order of magnitude, and altered soil bacterial community structure. The bacterial groups that increased in relative abundance in the burnt corn stalks-amended soils included families associated with cellulose decomposition (Chitinophagaceae), plant pathogens (Xanthomonadaceae), and biochar/charcoal-amended media (Gemmatimonadetes). In contrast, the abundance of these bacterial groups was not impacted by the pyrolysis biochars. Therefore, this research suggests that pyrolysis biochar represents a stabilized form of carbon that is resistant to microbial mineralization and has negligible effects on soil biological responses.
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Affiliation(s)
- Elizabeth Meschewski
- Illinois Sustainable Technology Center, Prairie Research Institute, University of Illinois at Urbana-Champaign, USA.
| | - Nancy Holm
- Illinois Sustainable Technology Center, Prairie Research Institute, University of Illinois at Urbana-Champaign, USA
| | - Brajendra K Sharma
- Illinois Sustainable Technology Center, Prairie Research Institute, University of Illinois at Urbana-Champaign, USA
| | - Kurt Spokas
- Agricultural Research Service, United States Department of Agriculture (USDA), USA
| | - Nicole Minalt
- Department of Biology, Loyola University Chicago, USA
| | - John J Kelly
- Department of Biology, Loyola University Chicago, USA
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Ijaz M, Tahir M, Shahid M, Ul-Allah S, Sattar A, Sher A, Mahmood K, Hussain M. Combined application of biochar and PGPR consortia for sustainable production of wheat under semiarid conditions with a reduced dose of synthetic fertilizer. Braz J Microbiol 2019; 50:449-58. [PMID: 30671922 DOI: 10.1007/s42770-019-00043-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/20/2018] [Indexed: 10/27/2022] Open
Abstract
This study investigates the combined effect of locally adopted plant growth promoting rhizobacteria (PGPR), biochar, and synthetic fertilizer on the wheat crop for the production and economic returns. A total of 20 PGPR strains were isolated from three different ecological zones of Pakistan and were evaluated. Of them, three isolates were selected for further studies. The treatments included (i) control with a full dose of the recommended fertilizer, (ii) control with half a dose of the fertilizer, (iii) PGPR consortia with half a dose of the fertilizer, (iv) biochar with half a dose of the fertilizer, and (v) PGPR + biochar with half a dose of the fertilizer. The study was repeated at three different locations. The data collected for leaf area index (LAI), grain yield, biological yield, straw yield, and harvest index (HI) revealed significant differences (P ≤ 0.05) for the locations and treatments, but the interaction of location and treatments was not significant. Based on the productivity and economic returns, the treatment with PGPR + biochar with half a dose of the fertilizer proved to be the best. Thus, the use of the PGPR consortia and biochar can improve the yield and profit of wheat crop with reduced synthetic fertilization. Graphical abstract ᅟ.
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Li Y, Shi H, Zhang H, Chen S. Amelioration of drought effects in wheat and cucumber by the combined application of super absorbent polymer and potential biofertilizer. PeerJ 2019; 7:e6073. [PMID: 30643688 PMCID: PMC6330032 DOI: 10.7717/peerj.6073] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 11/06/2018] [Indexed: 11/20/2022] Open
Abstract
Biofertilizer is a good substitute for chemical fertilizer in sustainable agriculture, but its effects are often hindered by drought stress. Super absorbent polymer (SAP), showing good capacity of water absorption and retention, can increase soil moisture. However, limited information is available about the efficiency of biofertilizer amended with SAP. This study was conducted to investigate the effects of synergistic application of SAP and biofertilizers (Paenibacillus beijingensis BJ-18 and Bacillus sp. L-56) on plant growth, including wheat and cucumber. Potted soil was treated with different fertilizer combinations (SAP, BJ-18 biofertilizer, L-56 biofertilizer, BJ-18 + SAP, L-56 + SAP), and pot experiment was carried out to explore its effects on viability of inoculants, seed germination rate, plant physiological and biochemical parameters, and expression pattern of stress-related genes under drought condition. At day 29 after sowing, the highest viability of strain P. beijingensis BJ-18 (264 copies ng-1 gDNA) was observed in BJ-18 + SAP treatment group of wheat rhizosphere soil, while that of strain Bacillus sp. L-56 (331 copies ng-1 gDNA) was observed in the L-56 + SAP treatment group of cucumber rhizosphere soil. In addition, both biofertilizers amended with SAP could promote germination rate of seeds (wheat and cucumber), plant growth, soil fertility (urease, sucrose, and dehydrogenase activities). Quantitative real-time PCR analysis showed that biofertilizer + SAP significantly down-regulated the expression levels of genes involved in ROS scavenging (TaCAT, CsCAT, TaAPX, and CsAPX2), ethylene biosynthesis (TaACO2, CsACO1, and CsACS1), stress response (TaDHN3, TaLEA, and CsLEA11), salicylic acid (TaPR1-1a and CsPR1-1a), and transcription activation (TaNAC2D and CsNAC35) in plants under drought stress. These results suggest that SAP addition in biofertilizer is a good tactic for enhancing the efficiency of biofertilizer, which is beneficial for plants in response to drought stress. To the best of our knowledge, this is the first report about the effect of synergistic use of biofertilizer and SAP on plant growth under drought stress.
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Affiliation(s)
- Yongbin Li
- State Key Laboratory of Agrobiotechnology and College of Biological Sciences, China Agricultural University, Beijing, China
| | - Haowen Shi
- State Key Laboratory of Agrobiotechnology and College of Biological Sciences, China Agricultural University, Beijing, China
| | - Haowei Zhang
- State Key Laboratory of Agrobiotechnology and College of Biological Sciences, China Agricultural University, Beijing, China
| | - Sanfeng Chen
- State Key Laboratory of Agrobiotechnology and College of Biological Sciences, China Agricultural University, Beijing, China
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Ahmad M, Pataczek L, Hilger TH, Zahir ZA, Hussain A, Rasche F, Schafleitner R, Solberg SØ. Perspectives of Microbial Inoculation for Sustainable Development and Environmental Management. Front Microbiol 2018; 9:2992. [PMID: 30568644 PMCID: PMC6289982 DOI: 10.3389/fmicb.2018.02992] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 11/19/2018] [Indexed: 11/13/2022] Open
Abstract
How to sustainably feed a growing global population is a question still without an answer. Particularly farmers, to increase production, tend to apply more fertilizers and pesticides, a trend especially predominant in developing countries. Another challenge is that industrialization and other human activities produce pollutants, which accumulate in soils or aquatic environments, contaminating them. Not only is human well-being at risk, but also environmental health. Currently, recycling, land-filling, incineration and pyrolysis are being used to reduce the concentration of toxic pollutants from contaminated sites, but too have adverse effects on the environment, producing even more resistant and highly toxic intermediate compounds. Moreover, these methods are expensive, and are difficult to execute for soil, water, and air decontamination. Alternatively, green technologies are currently being developed to degrade toxic pollutants. This review provides an overview of current research on microbial inoculation as a way to either replace or reduce the use of agrochemicals and clean environments heavily affected by pollution. Microorganism-based inoculants that enhance nutrient uptake, promote crop growth, or protect plants from pests and diseases can replace agrochemicals in food production. Several examples of how biofertilizers and biopesticides enhance crop production are discussed. Plant roots can be colonized by a variety of favorable species and genera that promote plant growth. Microbial interventions can also be used to clean contaminated sites from accumulated pesticides, heavy metals, polyaromatic hydrocarbons, and other industrial effluents. The potential of and key processes used by microorganisms for sustainable development and environmental management are discussed in this review, followed by their future prospects.
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Affiliation(s)
- Maqshoof Ahmad
- Department of Soil Science, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Lisa Pataczek
- Institute of Agricultural Sciences in the Tropics (Hans-Ruthenberg-Institute), University of Hohenheim, Stuttgart, Germany
| | - Thomas H. Hilger
- Institute of Agricultural Sciences in the Tropics (Hans-Ruthenberg-Institute), University of Hohenheim, Stuttgart, Germany
| | - Zahir Ahmad Zahir
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Azhar Hussain
- Department of Soil Science, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Frank Rasche
- Institute of Agricultural Sciences in the Tropics (Hans-Ruthenberg-Institute), University of Hohenheim, Stuttgart, Germany
| | | | - Svein Ø. Solberg
- World Vegetable Center, Tainan, China
- Inland Norway University of Applied Sciences, Elverum, Norway
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Backer R, Rokem JS, Ilangumaran G, Lamont J, Praslickova D, Ricci E, Subramanian S, Smith DL. Plant Growth-Promoting Rhizobacteria: Context, Mechanisms of Action, and Roadmap to Commercialization of Biostimulants for Sustainable Agriculture. Front Plant Sci 2018; 9:1473. [PMID: 30405652 PMCID: PMC6206271 DOI: 10.3389/fpls.2018.01473] [Citation(s) in RCA: 543] [Impact Index Per Article: 90.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 09/20/2018] [Indexed: 05/02/2023]
Abstract
Microbes of the phytomicrobiome are associated with every plant tissue and, in combination with the plant form the holobiont. Plants regulate the composition and activity of their associated bacterial community carefully. These microbes provide a wide range of services and benefits to the plant; in return, the plant provides the microbial community with reduced carbon and other metabolites. Soils are generally a moist environment, rich in reduced carbon which supports extensive soil microbial communities. The rhizomicrobiome is of great importance to agriculture owing to the rich diversity of root exudates and plant cell debris that attract diverse and unique patterns of microbial colonization. Microbes of the rhizomicrobiome play key roles in nutrient acquisition and assimilation, improved soil texture, secreting, and modulating extracellular molecules such as hormones, secondary metabolites, antibiotics, and various signal compounds, all leading to enhancement of plant growth. The microbes and compounds they secrete constitute valuable biostimulants and play pivotal roles in modulating plant stress responses. Research has demonstrated that inoculating plants with plant-growth promoting rhizobacteria (PGPR) or treating plants with microbe-to-plant signal compounds can be an effective strategy to stimulate crop growth. Furthermore, these strategies can improve crop tolerance for the abiotic stresses (e.g., drought, heat, and salinity) likely to become more frequent as climate change conditions continue to develop. This discovery has resulted in multifunctional PGPR-based formulations for commercial agriculture, to minimize the use of synthetic fertilizers and agrochemicals. This review is an update about the role of PGPR in agriculture, from their collection to commercialization as low-cost commercial agricultural inputs. First, we introduce the concept and role of the phytomicrobiome and the agricultural context underlying food security in the 21st century. Next, mechanisms of plant growth promotion by PGPR are discussed, including signal exchange between plant roots and PGPR and how these relationships modulate plant abiotic stress responses via induced systemic resistance. On the application side, strategies are discussed to improve rhizosphere colonization by PGPR inoculants. The final sections of the paper describe the applications of PGPR in 21st century agriculture and the roadmap to commercialization of a PGPR-based technology.
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Affiliation(s)
- Rachel Backer
- Department of Plant Science, McGill University, Montreal, QC, Canada
| | - J. Stefan Rokem
- School of Medicine, Department of Microbiology and Molecular Genetics, Institute for Medical Research Israel-Canada, The Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - John Lamont
- Department of Plant Science, McGill University, Montreal, QC, Canada
| | - Dana Praslickova
- Department of Plant Science, McGill University, Montreal, QC, Canada
| | - Emily Ricci
- Department of Plant Science, McGill University, Montreal, QC, Canada
| | | | - Donald L. Smith
- Department of Plant Science, McGill University, Montreal, QC, Canada
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Nascente AS, de Filippi MCC, Lanna AC, de Sousa TP, de Souza ACA, da Silva Lobo VL, da Silva GB. Effects of beneficial microorganisms on lowland rice development. Environ Sci Pollut Res Int 2017; 24:25233-25242. [PMID: 28929284 DOI: 10.1007/s11356-017-0212-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 09/13/2017] [Indexed: 06/07/2023]
Abstract
Microorganisms can promote plant growth by increasing phytomass production, nutrient uptake, photosynthesis rates, and grain yield, which can result in higher profits for farmers. However, there is limited information available about the physiological characteristics of lowland rice after treatment with beneficial microorganisms in the tropical region. This study aimed to determine the effects of different beneficial microorganisms and various application forms on phytomass production, gas exchange, and nutrient contents in the lowland rice cultivar 'BRS Catiana' in a tropical region. The experiment was performed under greenhouse conditions utilizing a completely randomized design and a 7 × 3 + 1 factorial scheme with four replications. The treatments consisted of seven microorganisms, including the rhizobacterial isolates BRM 32113, BRM 32111, BRM 32114, BRM 32112, BRM 32109, and BRM 32110 and Trichoderma asperellum pooled isolates UFRA-06, UFRA-09, UFRA-12, and UFRA-52, which were applied using three different methods (microbiolized seed, microbiolized seed + soil drenched with a microorganism suspension at 7 and 15 days after sowing (DAS), and microbiolized seed + plant spraying with a microorganism suspension at 7 and 15 DAS) with a control (water). The use of microorganisms can provide numerous benefits for rice in terms of crop growth and development. The microorganism types and methods of application positively and differentially affected the physiological characteristics evaluated in the experimental lowland rice plants. Notably, the plants treated with the bioagent BRM 32109 on the seeds and on seeds + soil produced plants with the highest dry matter biomass, gas exchange rate, and N, P, Fe, and Mg uptake. Therefore, our findings indicate strong potential for the use of microorganisms in lowland rice cultivation systems in tropical regions. Currently, an additional field experiment is in its second year to validate the beneficial result reported here and the novel input sustainability.
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Affiliation(s)
- Adriano Stephan Nascente
- Embrapa Arroz e Feijão, Rodovia GO-462, Km 12, Fazenda Capivara, Zona Rural, Caixa Postal: 179, Santo Antônio de Goiás, Goiás, CEP 75375-000, Brazil.
| | - Marta Cristina Corsi de Filippi
- Embrapa Arroz e Feijão, Rodovia GO-462, Km 12, Fazenda Capivara, Zona Rural, Caixa Postal: 179, Santo Antônio de Goiás, Goiás, CEP 75375-000, Brazil
| | - Anna Cristina Lanna
- Embrapa Arroz e Feijão, Rodovia GO-462, Km 12, Fazenda Capivara, Zona Rural, Caixa Postal: 179, Santo Antônio de Goiás, Goiás, CEP 75375-000, Brazil
| | | | - Alan Carlos Alves de Souza
- Lavras Federal University, Avenida Doutor Sylvio Menicucci, 1001, Lavras, Minas Gerais, CEP 37200-000, Brazil
| | - Valácia Lemes da Silva Lobo
- Embrapa Arroz e Feijão, Rodovia GO-462, Km 12, Fazenda Capivara, Zona Rural, Caixa Postal: 179, Santo Antônio de Goiás, Goiás, CEP 75375-000, Brazil
| | - Gisele Barata da Silva
- Plant Protection Laboratory, Institute of Agrarian Sciences, Federal Rural University of Amazon, Belém, Pará, Brazil
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