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Khunnonkwao P, Thitiprasert S, Jaiaue P, Khumrangsee K, Cheirsilp B, Thongchul N. The outlooks and key challenges in renewable biomass feedstock utilization for value-added platform chemical via bioprocesses. Heliyon 2024; 10:e30830. [PMID: 38770303 PMCID: PMC11103475 DOI: 10.1016/j.heliyon.2024.e30830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 05/04/2024] [Accepted: 05/06/2024] [Indexed: 05/22/2024] Open
Abstract
The conversion of renewable biomass feedstock into value-added products via bioprocessing platforms has become attractive because of environmental and health concerns. Process performance and cost competitiveness are major factors in the bioprocess design to produce desirable products from biomass feedstock. Proper pretreatment allows delignification and hemicellulose removal from the liquid fraction, allowing cellulose to be readily hydrolyzed to monomeric sugars. Several industrial products are produced via sugar fermentation using either naturally isolated or genetically modified microbes. Microbial platforms play an important role in the synthesis of several products, including drop-in chemicals, as-in products, and novel compounds. The key elements in developing a fermentation platform are medium formulation, sterilization, and active cells for inoculation. Downstream bioproduct recovery may seem like a straightforward chemical process, but is more complex, wherein cost competitiveness versus recovery performance becomes a challenge. This review summarizes the prospects for utilizing renewable biomass for bioprocessing.
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Affiliation(s)
- Panwana Khunnonkwao
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Sitanan Thitiprasert
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Phetcharat Jaiaue
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Katsaya Khumrangsee
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Benjamas Cheirsilp
- Center of Excellence in Innovative Biotechnology for Sustainable Utilization of Bioresources, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Nuttha Thongchul
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
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Wang Y, Wang M, Yan X, Chen K, Tian F, Yang X, Cao L, Ruan N, Dang Z, Yin X, Huang Y, Li F, Xu Q. The DEP1 Mutation Improves Stem Lodging Resistance and Biomass Saccharification by Affecting Cell Wall Biosynthesis in Rice. RICE (NEW YORK, N.Y.) 2024; 17:35. [PMID: 38748282 PMCID: PMC11096150 DOI: 10.1186/s12284-024-00712-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 05/07/2024] [Indexed: 05/18/2024]
Abstract
BACKGROUND Plant cell walls have evolved precise plasticity in response to environmental stimuli. The plant heterotrimeric G protein complexes could sense and transmit extracellular signals to intracellular signaling systems, and activate a series of downstream responses. dep1 (Dense and Erect Panicles 1), the gain-of-function mutation of DEP1 encoding a G protein γ subunit, confers rice multiple improved agronomic traits. However, the effects of DEP1 on cell wall biosynthesis and wall-related agronomic traits remain largely unknown. RESULTS In this study, we showed that the DEP1 mutation affects cell wall biosynthesis, leading to improved lodging resistance and biomass saccharification. The DEP1 is ubiquitously expressed with a relatively higher expression level in tissues rich in cell walls. The CRISPR/Cas9 editing mutants of DEP1 (dep1-cs) displayed a significant enhancement in stem mechanical properties relative to the wild-type, leading to a substantial improvement in lodging resistance. Cell wall analyses showed that the DEP1 mutation increased the contents of cellulose, hemicelluloses, and pectin, and reduced lignin content and cellulose crystallinity (CrI). Additionally, the dep1-cs seedlings exhibited higher sensitivity to cellulose biosynthesis inhibitors, 2,6-Dichlorobenzonitrile (DCB) and isoxaben, compared with the wild-type, confirming the role of DEP1 in cellulose deposition. Moreover, the DEP1 mutation-mediated alterations of cell walls lead to increased enzymatic saccharification of biomass after the alkali pretreatment. Furthermore, the comparative transcriptome analysis revealed that the DEP1 mutation substantially altered expression of genes involved in carbohydrate metabolism, and cell wall biosynthesis. CONCLUSIONS Our findings revealed the roles of DEP1 in cell wall biosynthesis, lodging resistance, and biomass saccharification in rice and suggested genetic modification of DEP1 as a potential strategy to develop energy rice varieties with high lodging resistance.
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Affiliation(s)
- Ye Wang
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Meihan Wang
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Xia Yan
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Kaixuan Chen
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Fuhao Tian
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Xiao Yang
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Liyu Cao
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Nan Ruan
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Zhengjun Dang
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Xuelin Yin
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Yuwei Huang
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China
| | - Fengcheng Li
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China.
| | - Quan Xu
- Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang Agricultural University, Shenyang, China.
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Shen Y, Adnan M, Ma F, Kong L, Wang M, Jiang F, Hu Q, Yao W, Zhou Y, Zhang M, Huang J. A high-throughput phenotyping method for sugarcane rind penetrometer resistance and breaking force characterization by near-infrared spectroscopy. PLANT METHODS 2023; 19:101. [PMID: 37770966 PMCID: PMC10540387 DOI: 10.1186/s13007-023-01076-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 09/04/2023] [Indexed: 09/30/2023]
Abstract
BACKGROUND Sugarcane (Saccharum spp.) is the core crop for sugar and bioethanol production over the world. A major problem in sugarcane production is stalk lodging due to weak mechanical strength. Rind penetrometer resistance (RPR) and breaking force are two kinds of regular parameters for mechanical strength characterization. However, due to the lack of efficient methods for determining RPR and breaking force in sugarcane, genetic approaches for improving these traits are generally limited. This study was designed to use near-infrared spectroscopy (NIRS) calibration assay to accurately assess mechanical strength on a high-throughput basis for the first time. RESULTS Based on well-established laboratory measurements of sugarcane stalk internodes collected in the years 2019 and 2020, considerable variations in RPR and breaking force were observed in the stalk internodes. Following a standard NIRS calibration process, two online models were obtained with a high coefficient of determination (R2) and the ratio of prediction to deviation (RPD) values during calibration, internal cross-validation, and external validation. Remarkably, the equation for RPR exhibited R2 and RPD values as high as 0.997 and 17.70, as well as showing relatively low root mean square error values at 0.44 N mm-2 during global modeling, demonstrating excellent predictive performance. CONCLUSIONS This study delivered a successful attempt for rapid and precise prediction of rind penetrometer resistance and breaking force in sugarcane stalk by NIRS assay. These established models can be used to improve phenotyping jobs for sugarcane germplasm on a large scale.
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Affiliation(s)
- Yinjuan Shen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Province and Ministry Co-Sponsored Collaborative Innovation Center of Canesugar Industry, Academy of Sugarcane and Sugar Industry, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
- Guangxi China-ASEAN Youth Industrial Park (Chongzuo Agricultural Hi-Tech Industry Demo Zone), Chongzuo, 532200, Guangxi, China
| | - Muhammad Adnan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Province and Ministry Co-Sponsored Collaborative Innovation Center of Canesugar Industry, Academy of Sugarcane and Sugar Industry, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Fumin Ma
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Province and Ministry Co-Sponsored Collaborative Innovation Center of Canesugar Industry, Academy of Sugarcane and Sugar Industry, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Liyuan Kong
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Province and Ministry Co-Sponsored Collaborative Innovation Center of Canesugar Industry, Academy of Sugarcane and Sugar Industry, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Maoyao Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Province and Ministry Co-Sponsored Collaborative Innovation Center of Canesugar Industry, Academy of Sugarcane and Sugar Industry, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Fuhong Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Province and Ministry Co-Sponsored Collaborative Innovation Center of Canesugar Industry, Academy of Sugarcane and Sugar Industry, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Qian Hu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Province and Ministry Co-Sponsored Collaborative Innovation Center of Canesugar Industry, Academy of Sugarcane and Sugar Industry, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Wei Yao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Province and Ministry Co-Sponsored Collaborative Innovation Center of Canesugar Industry, Academy of Sugarcane and Sugar Industry, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Yongfang Zhou
- Nanning Sugar Industry Co., LTD, Nanning, 530028, Guangxi, China
| | - Muqing Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Province and Ministry Co-Sponsored Collaborative Innovation Center of Canesugar Industry, Academy of Sugarcane and Sugar Industry, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China.
| | - Jiangfeng Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Province and Ministry Co-Sponsored Collaborative Innovation Center of Canesugar Industry, Academy of Sugarcane and Sugar Industry, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China.
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Wang M, Li X, Shen Y, Adnan M, Mao L, Lu P, Hu Q, Jiang F, Khan MT, Deng Z, Chen B, Huang J, Zhang M. A systematic high-throughput phenotyping assay for sugarcane stalk quality characterization by near-infrared spectroscopy. PLANT METHODS 2021; 17:76. [PMID: 34256789 PMCID: PMC8278626 DOI: 10.1186/s13007-021-00777-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Sugarcane (Saccharum officinarum L.) is an economically important crop with stalks as the harvest organs. Improvement in stalk quality is deemed a promising strategy for enhancing sugarcane production. However, the lack of efficient approaches for systematic evaluation of sugarcane germplasm largely limits improvements in stalk quality. This study is designed to develop a systematic near-infrared spectroscopy (NIRS) assay for high-throughput phenotyping of sugarcane stalk quality, thereby providing a feasible solution for precise evaluation of sugarcane germplasm. RESULTS A total of 628 sugarcane accessions harvested at different growth stages before and after maturity were employed to take a high-throughput assay to determine sugarcane stalk quality. Based on high-performance anion chromatography (HPAEC-PAD), large variations in sugarcane stalk quality were detected in terms of biomass composition and the corresponding fundamental ratios. Online and offline NIRS modeling strategies were applied for multiple purpose calibration with partial least square (PLS) regression analysis. Consequently, 25 equations were generated with excellent determination coefficients (R2) and ratio performance deviation (RPD) values. Notably, for some observations, RPD values as high as 6.3 were observed, which indicated their exceptional performance and predictive capability. CONCLUSIONS This study provides a feasible method for consistent and high-throughput assessment of stalk quality in terms of moisture, soluble sugar, insoluble residue and the corresponding fundamental ratios. The proposed method permits large-scale screening of optimal sugarcane germplasm for sugarcane stalk quality breeding and beyond.
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Affiliation(s)
- Maoyao Wang
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Xinru Li
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Yinjuan Shen
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Muhammad Adnan
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Le Mao
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Pan Lu
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Qian Hu
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Fuhong Jiang
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Muhammad Tahir Khan
- Sugarcane Biotechnology Group, Nuclear Institute of Agriculture (NIA), Tandojam, Pakistan
| | - Zuhu Deng
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
- National Engineering Technology Research Center of Sugarcane, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Baoshan Chen
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Jiangfeng Huang
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China.
| | - Muqing Zhang
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China.
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Li X, Ma F, Liang C, Wang M, Zhang Y, Shen Y, Adnan M, Lu P, Khan MT, Huang J, Zhang M. Precise high-throughput online near-infrared spectroscopy assay to determine key cell wall features associated with sugarcane bagasse digestibility. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:123. [PMID: 34051834 PMCID: PMC8164326 DOI: 10.1186/s13068-021-01979-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 05/21/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Sugarcane is one of the most crucial energy crops that produces high yields of sugar and lignocellulose. The cellulose crystallinity index (CrI) and lignin are the two kinds of key cell wall features that account for lignocellulose saccharification. Therefore, high-throughput screening of sugarcane germplasm with excellent cell wall features is considered a promising strategy to enhance bagasse digestibility. Recently, there has been research to explore near-infrared spectroscopy (NIRS) assays for the characterization of the corresponding wall features. However, due to the technical barriers of the offline strategy, it is difficult to apply for high-throughput real-time analyses. This study was therefore initiated to develop a high-throughput online NIRS assay to rapidly detect cellulose crystallinity, lignin content, and their related proportions in sugarcane, aiming to provide an efficient and feasible method for sugarcane cell wall feature evaluation. RESULTS A total of 838 different sugarcane genotypes were collected at different growth stages during 2018 and 2019. A continuous variation distribution of the near-infrared spectrum was observed among these collections. Due to the very large diversity of CrI and lignin contents detected in the collected sugarcane samples, seven high-quality calibration models were developed through online NIRS calibration. All of the generated equations displayed coefficient of determination (R2) values greater than 0.8 and high ratio performance deviation (RPD) values of over 2.0 in calibration, internal cross-validation, and external validation. Remarkably, the equations for CrI and total lignin content exhibited RPD values as high as 2.56 and 2.55, respectively, indicating their excellent prediction capacity. An offline NIRS assay was also performed. Comparable calibration was observed between the offline and online NIRS analyses, suggesting that both strategies would be applicable to estimate cell wall characteristics. Nevertheless, as online NIRS assays offer tremendous advantages for large-scale real-time screening applications, it could be implied that they are a better option for high-throughput cell wall feature prediction. CONCLUSIONS This study, as an initial attempt, explored an online NIRS assay for the high-throughput assessment of key cell wall features in terms of CrI, lignin content, and their proportion in sugarcane. Consistent and precise calibration results were obtained with NIRS modeling, insinuating this strategy as a reliable approach for the large-scale screening of promising sugarcane germplasm for cell wall structure improvement and beyond.
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Affiliation(s)
- Xinru Li
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China
| | - Fumin Ma
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China
| | - Chengping Liang
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China
| | - Maoyao Wang
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China
| | - Yan Zhang
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China
| | - Yufei Shen
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China
| | - Muhammad Adnan
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China
| | - Pan Lu
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China
| | - Muhammad Tahir Khan
- Sugarcane Biotechnology Group, Nuclear Institute of Agriculture (NIA), Tando Jam, Pakistan
| | - Jiangfeng Huang
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China.
| | - Muqing Zhang
- Guangxi Key Laboratory of Sugarcane Biology, Sugar Industry Collaborative Innovation Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China.
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Dai Y, Hu B, Yang Q, Nie L, Sun D. Comparison of the effects of different pretreatments on the structure and enzymatic hydrolysis of Miscanthus. Biotechnol Appl Biochem 2021; 69:548-557. [PMID: 33608903 DOI: 10.1002/bab.2131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Miscanthus is regarded as a desired bioenergy crop with enormous lignocellulose residues for biofuels and other chemical products. In this study, the effect of different pretreatments (including microwave, NaOH, CaO, and microwave + NaOH/CaO) on sugar yields was investigated, leading to largely varied hexose yields at 4.0-73.4% (% cellulose) released from enzymatic hydrolysis of pretreated Miscanthus residues. Among them, the highest yield of 73.4% for hexoses was obtained from 12% NaOH (w/v) solution pretreatment, whereas 1% CaO (w/w) and microwave pretreatment resulted in a lower hexose yield than the control (without pretreatment). The sugar yield from microwave followed with 1% NaOH pretreatment was 4.3 times higher than that of microwave followed with 1% CaO. However, the enzymatic hydrolysis efficiencies of the sample were 15.2% and 58.5% under microwave pretreatment followed by 12% NaOH or 12.5% CaO, respectively, which were lower than those of the same concentration of alkali (NaOH and CaO) pretreatments. To investigate the mechanism of varied enzymatic saccharification under different pretreatments, the changes in the surface structure and porosity of the Miscanthus-pretreated lignocelluses were studied by means of Fourier transform infrared, Congo red staining, and scanning electron microscopy analysis. The results show that the different pretreatments destroy the cell wall cladding structure and reduce the bonding force between cellulose, hemicellulose, and lignin to different degrees, therefore increasing the accessibility of cellulose and enhancing cellulose digestion.
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Affiliation(s)
- Yongyong Dai
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, People's Republic of China
| | - Bing Hu
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, People's Republic of China
| | - Qiaomei Yang
- College of Plant science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Longhui Nie
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, People's Republic of China
| | - Dan Sun
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, People's Republic of China
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Yang Q, Zhao W, Liu J, He B, Wang Y, Yang T, Zhang G, He M, Lu J, Peng L, Wang Y. Quantum dots are conventionally applicable for wide-profiling of wall polymer distribution and destruction in diverse cells of rice. Talanta 2020; 208:120452. [PMID: 31816737 DOI: 10.1016/j.talanta.2019.120452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/30/2019] [Accepted: 10/06/2019] [Indexed: 11/28/2022]
Abstract
Plant cell walls represent enormous biomass resources for biofuels, and it thus becomes important to establish a sensitive and wide-applicable approach to visualize wall polymer distribution and destruction during plant growth and biomass process. Despite quantum dots (QDs) have been applied to label biological specimens, little is reported about its application in plant cell walls. Here, semiconductor QDs (CdSe/ZnS) were employed to label the secondary antibody directed to the epitopes of pectin or xylan, and sorted out the optimal conditions for visualizing two polysaccharides distribution in cell walls of rice stem. Meanwhile, the established QDs approach could simultaneously highlight wall polysaccharides and lignin co-localization in different cell types. Notably, this work demonstrated that the QDs labeling was sensitive to profile distinctive wall polymer destruction between alkali and acid pretreatments with stem tissues of rice. Hence, this study has provided a powerful tool to characterize wall polymer functions in plant growth and development in vivo, as well as their distinct roles during biomass process in vitro.
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Affiliation(s)
- Qiaomei Yang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China; Laboratory of Biomass Engineering and Nanomaterial Application in Automobiles, College of Food Science and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, China
| | - Wenyue Zhao
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China; Laboratory of Biomass Engineering and Nanomaterial Application in Automobiles, College of Food Science and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, China
| | - Jingyuan Liu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Boyang He
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Youmei Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Tangbin Yang
- Beijing Najing Biotechnology Co., Ltd, Wuhan, China
| | - Guifen Zhang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Mingxiong He
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu, China
| | - Jun Lu
- Laboratory of Biomass Engineering and Nanomaterial Application in Automobiles, College of Food Science and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China; Laboratory of Biomass Engineering and Nanomaterial Application in Automobiles, College of Food Science and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, China
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China; Laboratory of Biomass Engineering and Nanomaterial Application in Automobiles, College of Food Science and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, China.
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Zoghlami A, Paës G. Lignocellulosic Biomass: Understanding Recalcitrance and Predicting Hydrolysis. Front Chem 2019; 7:874. [PMID: 31921787 PMCID: PMC6930145 DOI: 10.3389/fchem.2019.00874] [Citation(s) in RCA: 204] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 12/04/2019] [Indexed: 12/11/2022] Open
Abstract
Lignocellulosic biomass (LB) is an abundant and renewable resource from plants mainly composed of polysaccharides (cellulose and hemicelluloses) and an aromatic polymer (lignin). LB has a high potential as an alternative to fossil resources to produce second-generation biofuels and biosourced chemicals and materials without compromising global food security. One of the major limitations to LB valorisation is its recalcitrance to enzymatic hydrolysis caused by the heterogeneous multi-scale structure of plant cell walls. Factors affecting LB recalcitrance are strongly interconnected and difficult to dissociate. They can be divided into structural factors (cellulose specific surface area, cellulose crystallinity, degree of polymerization, pore size and volume) and chemical factors (composition and content in lignin, hemicelluloses, acetyl groups). Goal of this review is to propose an up-to-date survey of the relative impact of chemical and structural factors on biomass recalcitrance and of the most advanced techniques to evaluate these factors. Also, recent spectral and water-related measurements accurately predicting hydrolysis are presented. Overall, combination of relevant factors and specific measurements gathering simultaneously structural and chemical information should help to develop robust and efficient LB conversion processes into bioproducts.
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Affiliation(s)
- Aya Zoghlami
- FARE Laboratory, INRAE, University of Reims Champagne-Ardenne, Reims, France
| | - Gabriel Paës
- FARE Laboratory, INRAE, University of Reims Champagne-Ardenne, Reims, France
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Alam A, Zhang R, Liu P, Huang J, Wang Y, Hu Z, Madadi M, Sun D, Hu R, Ragauskas AJ, Tu Y, Peng L. A finalized determinant for complete lignocellulose enzymatic saccharification potential to maximize bioethanol production in bioenergy Miscanthus. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:99. [PMID: 31057665 PMCID: PMC6486690 DOI: 10.1186/s13068-019-1437-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 04/13/2019] [Indexed: 05/18/2023]
Abstract
BACKGROUND Miscanthus is a leading bioenergy crop with enormous lignocellulose production potential for biofuels and chemicals. However, lignocellulose recalcitrance leads to biomass process difficulty for an efficient bioethanol production. Hence, it becomes essential to identify the integrative impact of lignocellulose recalcitrant factors on cellulose accessibility for biomass enzymatic hydrolysis. In this study, we analyzed four typical pairs of Miscanthus accessions that showed distinct cell wall compositions and sorted out three major factors that affected biomass saccharification for maximum bioethanol production. RESULTS Among the three optimal (i.e., liquid hot water, H2SO4 and NaOH) pretreatments performed, mild alkali pretreatment (4% NaOH at 50 °C) led to almost complete biomass saccharification when 1% Tween-80 was co-supplied into enzymatic hydrolysis in the desirable Miscanthus accessions. Consequently, the highest bioethanol yields were obtained at 19% (% dry matter) from yeast fermentation, with much higher sugar-ethanol conversion rates by 94-98%, compared to the other Miscanthus species subjected to stronger pretreatments as reported in previous studies. By comparison, three optimized pretreatments distinctively extracted wall polymers and specifically altered polymer features and inter-linkage styles, but the alkali pretreatment caused much increased biomass porosity than that of the other pretreatments. Based on integrative analyses, excellent equations were generated to precisely estimate hexoses and ethanol yields under various pretreatments and a hypothetical model was proposed to outline an integrative impact on biomass saccharification and bioethanol production subjective to a predominate factor (CR stain) of biomass porosity and four additional minor factors (DY stain, cellulose DP, hemicellulose X/A, lignin G-monomer). CONCLUSION Using four pairs of Miscanthus samples with distinct cell wall composition and varied biomass saccharification, this study has determined three main factors of lignocellulose recalcitrance that could be significantly reduced for much-increased biomass porosity upon optimal pretreatments. It has also established a novel standard that should be applicable to judge any types of biomass process technology for high biofuel production in distinct lignocellulose substrates. Hence, this study provides a potential strategy for precise genetic modification of lignocellulose in all bioenergy crops.
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Affiliation(s)
- Aftab Alam
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Ran Zhang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Peng Liu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Jiangfeng Huang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Zhen Hu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Meysam Madadi
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Dan Sun
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, 430068 China
| | - Ruofei Hu
- College of Food Science and Technology, Hubei University of Arts and Science, Xiangyang, 441053 China
| | - Arthur J. Ragauskas
- Department of Chemical and Biomolecular Engineering, University of Tennessee-Knoxville, Knoxville, TN 37996-2200 USA
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
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10
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Li M, He S, Wang J, Liu Z, Xie GH. An NIRS-based assay of chemical composition and biomass digestibility for rapid selection of Jerusalem artichoke clones. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:334. [PMID: 30574187 PMCID: PMC6299672 DOI: 10.1186/s13068-018-1335-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 12/10/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND High-throughput evaluation of lignocellulosic biomass feedstock quality is the key to the successful commercialization of bioethanol production. Currently, wet chemical methods for the determination of chemical composition and biomass digestibility are expensive and time-consuming, thus hindering comprehensive feedstock quality assessments based on these biomass specifications. To find the ideal bioethanol feedstock, we perform a near-infrared spectroscopic (NIRS) assay to rapidly and comprehensively analyze the chemical composition and biomass digestibility of 59 Jerusalem artichoke (Helianthus tuberosus L., abbreviated JA) clones collected from 24 provinces in six regions of China. RESULTS The distinct geographical distribution of JA accessions generated varied chemical composition as well as related biomass digestibility (after soluble sugars extraction and mild alkali pretreatment). Notably, the soluble sugars, cellulose, hemicellulose, lignin, ash, and released hexoses, pentoses, and total carbohydrates were rapidly and perfectly predicted by partial least squares regression coupled with model population analyses (MPA), which exhibited significantly higher predictive performance than controls. Subsequently, grey relational grade analysis was employed to correlate chemical composition and biomass digestibility with feedstock quality score (FQS), resulting in the assignment of tested JA clones to five feedstock quality grades (FQGs). Ultimately, the FQGs of JA clones were successfully classified using partial least squares-discriminant analysis model coupled with MPA, attaining a significantly higher correct rate of 97.8% in the calibration subset and 91.1% in the validation subset. CONCLUSIONS Based on the diversity of JA clones, the present study has not only rapidly and precisely examined the biomass composition and digestibility with MPA-optimized NIRS models but has also selected the ideal JA clones according to FQS. This method provides a new insight into the selection of ideal bioethanol feedstock for high-efficiency bioethanol production.
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Affiliation(s)
- Meng Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193 China
- National Energy R&D Center for Non-food Biomass, China Agricultural University, Beijing, 100193 China
| | - Siyang He
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193 China
- National Energy R&D Center for Non-food Biomass, China Agricultural University, Beijing, 100193 China
| | - Jun Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193 China
- National Energy R&D Center for Non-food Biomass, China Agricultural University, Beijing, 100193 China
| | - Zuxin Liu
- Chinese Academy of Agricultural Engineering Planning and Design, Beijing, 100125 China
| | - Guang Hui Xie
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193 China
- National Energy R&D Center for Non-food Biomass, China Agricultural University, Beijing, 100193 China
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11
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Wright A, Bandulasena H, Ibenegbu C, Leak D, Holmes T, Zimmerman W, Shaw A, Iza F. Dielectric barrier discharge plasma microbubble reactor for pretreatment of lignocellulosic biomass. AIChE J 2018; 64:3803-3816. [PMID: 31031403 PMCID: PMC6474123 DOI: 10.1002/aic.16212] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 04/11/2018] [Indexed: 11/11/2022]
Abstract
A novel lignocellulosic biomass pretreatment reactor has been designed and tested to investigate pretreatment efficacy of miscanthus grass. The reactor was designed to optimize the transfer of highly oxidative species produced by dielectric barrier discharge plasma to the liquid phase immediately after generation, by arranging close proximity of the plasma to the gas-liquid interface of microbubbles. The reactor produced a range of reactive oxygen species and reactive nitrogen species, and the rate of production depended on the power source duty cycle and the temperature of the plasma. Ozone and other oxidative species were dispersed efficiently using energy efficient microbubbles produced by fluidic oscillations. A 5% (w/w) miscanthus suspension pretreated for 3 h at 10% duty cycle yielded 0.5% acid soluble lignin release and 26% sugar release post hydrolysis with accelerated pretreatment toward the latter stages of the treatment demonstrating the potential of this approach as an alternative pretreatment method. © 2018 The Authors. AIChE Journal published by Wiley Periodicals, Inc. on behalf of American Institute of Chemical Engineers. © 2018 The Authors. AIChE Journal published by Wiley Periodicals, Inc. on behalf of American Institute of Chemical Engineers. AIChE J, 64: 3803-3816, 2018.
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Affiliation(s)
- Alexander Wright
- Dept. of Chemical Engineering; Loughborough University; Loughborough Leicestershire, LE11 3TU U.K
| | - Hemaka Bandulasena
- Dept. of Chemical Engineering; Loughborough University; Loughborough Leicestershire, LE11 3TU U.K
| | | | - David Leak
- Dept. of Biology and Biochemistry; University of Bath; Bath, BA2 7AY U.K
| | - Thomas Holmes
- Dept. of Chemical and Biological Engineering; University of Sheffield; Sheffield, S10 2TN U.K
| | - William Zimmerman
- Dept. of Chemical and Biological Engineering; University of Sheffield; Sheffield, S10 2TN U.K
| | - Alex Shaw
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering; Loughborough University; Loughborough Leicestershire, LE11 3TU U.K
| | - Felipe Iza
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering; Loughborough University; Loughborough Leicestershire, LE11 3TU U.K
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12
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Cheng S, Yu H, Hu M, Wu Y, Cheng L, Cai Q, Tu Y, Xia T, Peng L. Miscanthus accessions distinctively accumulate cadmium for largely enhanced biomass enzymatic saccharification by increasing hemicellulose and pectin and reducing cellulose CrI and DP. BIORESOURCE TECHNOLOGY 2018; 263:67-74. [PMID: 29730520 DOI: 10.1016/j.biortech.2018.04.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/02/2018] [Accepted: 04/07/2018] [Indexed: 05/06/2023]
Abstract
In this study, total eight distinct Miscanthus accessions were collected from the cadmium (Cd)-supplied soil pots, and mild alkali pretreatments (0.5%, 1% NaOH) were then performed to enhance biomass enzymatic saccharification. Due to large Cd accumulation, all Miscanthus accessions showed significantly reduced cellulose levels and features (CrI, DP) with much increased hemicellulose and pectin contents in the mature stems. Under mild alkali pretreatments, all Miscanthus samples exhibited largely increased hexoses yields released from enzymatic hydrolysis, and one desirable accession had an almost complete biomass saccharification with the hexoses yield at 100% (% cellulose). Notably, the biomass residues remained from enzymatic hydrolysis upon 1% NaOH pretreatment could absorb 73-96% Cd (% of total), suggesting an applicable approach for Cd phyto-remediation. Hence, a hypothetic model was proposed to elucidate that the enhanced biomass saccharification should be mainly due to much reduced cellulose CrI and DP in the Cd-accumulated Miscanthus accessions.
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Affiliation(s)
- Shaozhe Cheng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Hua Yu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Meng Hu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yue Wu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Liangliang Cheng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qiuming Cai
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Tao Xia
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Life Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China; School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China.
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13
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Neural Network Prediction of Corn Stover Saccharification Based on Its Structural Features. BIOMED RESEARCH INTERNATIONAL 2018; 2018:9167508. [PMID: 30159330 PMCID: PMC6109571 DOI: 10.1155/2018/9167508] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/04/2018] [Accepted: 05/31/2018] [Indexed: 11/18/2022]
Abstract
The classic assay for a large population biomass is time-consuming, labor intensive, and chemically expensive. This paper would find out a rapid assay for predicting biomass digestibility from biomass structural features without hydrolysis. We examined the 62 representative corn stover accessions that displayed a diverse cell-wall composition and varied biomass digestibility. Correlation analysis was firstly to detect effects of cell-wall compositions and wall polymer features on corn stover digestibility. Based on the dependable relationship of structural features and digestibility, a neural networks model has been developed and successfully predicted the corn stover saccharification based on the features without enzymatic hydrolysis. The actual measured and net-simulated predicted corn stover saccharification had good results as mean square error of 1.80E-05, coefficient of determination of 0.942 and average relative deviation of 3.95. The trained networks satisfactorily predicted the saccharification results based on the features of corn stover. Predicting the corn stover saccharification without hydrolysis will reduce capital and operational costs for corn stover purchasing and storage.
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14
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Li Y, Zhuo J, Liu P, Chen P, Hu H, Wang Y, Zhou S, Tu Y, Peng L, Wang Y. Distinct wall polymer deconstruction for high biomass digestibility under chemical pretreatment in Miscanthus and rice. Carbohydr Polym 2018; 192:273-281. [PMID: 29691021 DOI: 10.1016/j.carbpol.2018.03.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 02/02/2018] [Accepted: 03/08/2018] [Indexed: 11/18/2022]
Abstract
Miscanthus is a leading bioenergy crop and rice provides enormous biomass for biofuels. Using Calcofluor White staining, this work in situ observed an initial lignocellulose hydrolysis in two distinct Miscanthus accessions, rice cultivar (NPB), and Osfc16 mutant after mild chemical pretreatments. In comparison, the M. sin and Osfc16 respectively exhibited weak Calcofluor fluorescence compared to the M. sac and NPB during enzymatic hydrolysis, consistent with the high biomass saccharification detected in vitro. Using xyloglucan-directed monoclonal antibodies (mAbs), xyloglucan deconstruction was observed from initial cellulose hydrolysis, whereas the M. sin and Osfc16 exhibited relatively strong immunolabeling using xylan-directed mAb, confirming previous findings of xylan positive impacts on biomass saccharification. Furthermore, the M. sin showed quick disappearance of RG-I immunolabeling with varied HG labelings between acid and alkali pretreatments. Hence, this study demonstrated a quick approach to explore wall polymer distinct deconstruction for enhanced biomass saccharification under chemical pretreatment in bioenergy crops.
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Affiliation(s)
- Yuyang Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Jingdi Zhuo
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Peng Liu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Peng Chen
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Huizhen Hu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Youmei Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Shiguang Zhou
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
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15
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Zhao C, Fan X, Hou X, Zhu Y, Yue Y, Wu J. Extended light exposure increases stem digestibility and biomass production of switchgrass. PLoS One 2017; 12:e0188349. [PMID: 29166649 PMCID: PMC5699803 DOI: 10.1371/journal.pone.0188349] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 11/06/2017] [Indexed: 11/18/2022] Open
Abstract
Switchgrass is a photoperiod-sensitive energy grass suitable for growing in the marginal lands of China. We explored the effects of extended photoperiods of low-irradiance light (7 μmol·m-2·s-1, no effective photosynthesis) on the growth, the biomass dry weight, the biomass allocation, and, especially, the stem digestibility and cell wall characteristics of switchgrass. Two extended photoperiods (i.e., 18 and 24 h) were applied over Alamo. Extended light exposure (18 and 24 h) resulted in delayed heading and higher dry weights of vegetative organs (by 32.87 and 35.94%, respectively) at the expense of reducing the amount of sexual organs (by 40.05 and 50.87%, respectively). Compared to the control group (i.e., natural photoperiod), the yield of hexoses (% dry matter) in the stems after a direct enzymatic hydrolysis (DEH) treatment significantly increased (by 44.02 and 46.10%) for those groups irradiated during 18 and 24 h, respectively. Moreover, the yield of hexoses obtained via enzymatic hydrolysis increased after both basic (1% NaOH) and acid (1% H2SO4) pretreatments for the groups irradiated during 18 and 24 h. Additionally, low-irradiance light extension (LILE) significantly increased the content of non-structural carbohydrates (NSCs) while notably reducing the lignin content and the syringyl to guaiacyl (S/G) ratio. These structural changes were in part responsible for the observed improved stem digestibility. Remarkably, LILE significantly decreased the cellulose crystallinity index (CrI) of switchgrass by significantly increasing both the arabinose substitution degree in xylan and the content of ammonium oxalate-extractable uronic acids, both favoring cellulose digestibility. Despite this LILE technology is not applied to the cultivation of switchgrass on a large scale yet, we believe that the present work is important in that it reveals important relationships between extended day length irradiations and biomass production and quality. Additionally, this study paves the way for improving biomass production and digestibility via genetic modification of day length sensitive transcription factors or key structural genes in switchgrass leaves.
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Affiliation(s)
- Chunqiao Zhao
- Research & Development Center for Grass and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing, P. R. China
- Key Laboratory of Urban Agriculture (North), Ministry of Agriculture, Beijing, P. R. China
| | - Xifeng Fan
- Research & Development Center for Grass and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing, P. R. China
- Key Laboratory of Urban Agriculture (North), Ministry of Agriculture, Beijing, P. R. China
| | - Xincun Hou
- Research & Development Center for Grass and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing, P. R. China
- Key Laboratory of Urban Agriculture (North), Ministry of Agriculture, Beijing, P. R. China
| | - Yi Zhu
- Research & Development Center for Grass and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing, P. R. China
- Key Laboratory of Urban Agriculture (North), Ministry of Agriculture, Beijing, P. R. China
| | - Yuesen Yue
- Research & Development Center for Grass and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing, P. R. China
- Key Laboratory of Urban Agriculture (North), Ministry of Agriculture, Beijing, P. R. China
| | - Juying Wu
- Research & Development Center for Grass and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing, P. R. China
- Key Laboratory of Urban Agriculture (North), Ministry of Agriculture, Beijing, P. R. China
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16
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Jin X, Chen X, Shi C, Li M, Guan Y, Yu CY, Yamada T, Sacks EJ, Peng J. Determination of hemicellulose, cellulose and lignin content using visible and near infrared spectroscopy in Miscanthus sinensis. BIORESOURCE TECHNOLOGY 2017; 241:603-609. [PMID: 28601778 DOI: 10.1016/j.biortech.2017.05.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/06/2017] [Accepted: 05/08/2017] [Indexed: 05/25/2023]
Abstract
Lignocellulosic components including hemicellulose, cellulose and lignin are the three major components of plant cell walls, and their proportions in biomass crops, such as Miscanthus sinensis, greatly impact feed stock conversion to liquid fuels or bio-products. In this study, the feasibility of using visible and near infrared (VIS/NIR) spectroscopy to rapidly quantify hemicellulose, cellulose and lignin in M. sinensis was investigated. Initially, prediction models were established using partial least squares (PLS), least squares support vector machine regression (LSSVR), and radial basis function neural network (RBF_NN) based on whole wavelengths. Subsequently, 23, 25 and 27 characteristic wavelengths for hemicellulose, cellulose and lignin, respectively, were found to show significant contribution to calibration models. Three determination models were eventually built by PLS, LS-SVM and ANN based on the characteristic wavelengths. Calibration models for lignocellulosic components were successfully developed, and can now be applied to assessment of lignocellulose contents in M. sinensis.
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Affiliation(s)
- Xiaoli Jin
- Department of Agronomy & The Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310058, China.
| | - Xiaoling Chen
- Department of Agronomy & The Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Chunhai Shi
- Department of Agronomy & The Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Mei Li
- Department of Agronomy & The Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Yajing Guan
- Department of Agronomy & The Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Chang Yeon Yu
- Kangwon National University, Chuncheon, Gangwon 200-701, South Korea
| | - Toshihiko Yamada
- Field Science Center for Northern Biosphere, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Erik J Sacks
- Department of Crop Sciences, University of Illinois, Urbana-Champaign, Urbana, IL 61801, USA
| | - Junhua Peng
- College of Agriculture, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China
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17
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Sun D, Alam A, Tu Y, Zhou S, Wang Y, Xia T, Huang J, Li Y, Wei X, Hao B, Peng L. Steam-exploded biomass saccharification is predominately affected by lignocellulose porosity and largely enhanced by Tween-80 in Miscanthus. BIORESOURCE TECHNOLOGY 2017; 239:74-81. [PMID: 28500891 DOI: 10.1016/j.biortech.2017.04.114] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 04/26/2017] [Accepted: 04/27/2017] [Indexed: 05/11/2023]
Abstract
In this study, total ten Miscanthus accessions exhibited diverse cell wall compositions, leading to largely varied hexoses yields at 17%-40% (% cellulose) released from direct enzymatic hydrolysis of steam-exploded (SE) residues. Further supplied with 2% Tween-80 into the enzymatic digestion, the Mis7 accession showed the higher hexose yield by 14.8-fold than that of raw material, whereas the Mis10 had the highest hexoses yield at 77% among ten Miscanthus accessions. Significantly, this study identified four wall polymer features that negatively affect biomass saccharification as p<0.05 or 0.01 in the SE residues, including cellulose DP, Xyl and Ara of hemicellulose, and S-monomer of lignin. Based on Simons' stain, the SE porosity (defined by DY/DB) was examined to be the unique positive factor on biomass enzymatic digestion. Hence, this study provides the potential strategy to enhance biomass saccharification using optimal biomass process technology and related genetic breeding in Miscanthus and beyond.
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Affiliation(s)
- Dan Sun
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Aftab Alam
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Shiguang Zhou
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Tao Xia
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jiangfeng Huang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ying Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaoyang Wei
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Bo Hao
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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Jin X, Chen X, Xiao L, Shi C, Chen L, Yu B, Yi Z, Yoo JH, Heo K, Yu CY, Yamada T, Sacks EJ, Peng J. Application of visible and near-infrared spectroscopy to classification of Miscanthus species. PLoS One 2017; 12:e0171360. [PMID: 28369059 PMCID: PMC5378329 DOI: 10.1371/journal.pone.0171360] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 01/18/2017] [Indexed: 11/30/2022] Open
Abstract
The feasibility of visible and near infrared (NIR) spectroscopy as tool to classify Miscanthus samples was explored in this study. Three types of Miscanthus plants, namely, M. sinensis, M. sacchariflorus and M. fIoridulus, were analyzed using a NIR spectrophotometer. Several classification models based on the NIR spectra data were developed using line discriminated analysis (LDA), partial least squares (PLS), least squares support vector machine regression (LSSVR), radial basis function (RBF) and neural network (NN). The principal component analysis (PCA) presented rough classification with overlapping samples, while the models of Line_LSSVR, RBF_LSSVR and RBF_NN presented almost same calibration and validation results. Due to the higher speed of Line_LSSVR than RBF_LSSVR and RBF_NN, we selected the line_LSSVR model as a representative. In our study, the model based on line_LSSVR showed higher accuracy than LDA and PLS models. The total correct classification rates of 87.79 and 96.51% were observed based on LDA and PLS model in the testing set, respectively, while the line_LSSVR showed 99.42% of total correct classification rate. Meanwhile, the lin_LSSVR model in the testing set showed correct classification rate of 100, 100 and 96.77% for M. sinensis, M. sacchariflorus and M. fIoridulus, respectively. The lin_LSSVR model assigned 99.42% of samples to the right groups, except one M. fIoridulus sample. The results demonstrated that NIR spectra combined with a preliminary morphological classification could be an effective and reliable procedure for the classification of Miscanthus species.
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Affiliation(s)
- Xiaoli Jin
- Department of Agronomy & The Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou, China
| | - Xiaoling Chen
- Department of Agronomy & The Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou, China
| | - Liang Xiao
- Hunan Provincial Key Laboratory for Germplasm Innovation and Utilization of Crop, Hunan Agricultural University, Hunan Changsha, China
| | - Chunhai Shi
- Department of Agronomy & The Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou, China
| | - Liang Chen
- Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, Hubei, China
| | - Bin Yu
- Wuhan Junxiu Horticultural Science and Technology Co., Ltd. Wuhan, Hubei, China
| | - Zili Yi
- Hunan Provincial Key Laboratory for Germplasm Innovation and Utilization of Crop, Hunan Agricultural University, Hunan Changsha, China
| | - Ji Hye Yoo
- Kangwon National University, Chuncheon, Gangwon, South Korea
| | - Kweon Heo
- Kangwon National University, Chuncheon, Gangwon, South Korea
| | - Chang Yeon Yu
- Kangwon National University, Chuncheon, Gangwon, South Korea
| | - Toshihiko Yamada
- Field Science Center for Northern Biosphere, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Erik J. Sacks
- Department of Crop Sciences, University of Illinois, Urbana-Champaign, Urbana, Illinois, United States of America
| | - Junhua Peng
- Life Science and Technology Center, China National Seed Group Co., Ltd., Wuhan, Hubei, China
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Li M, Wang J, Du F, Diallo B, Xie GH. High-throughput analysis of chemical components and theoretical ethanol yield of dedicated bioenergy sorghum using dual-optimized partial least squares calibration models. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:206. [PMID: 28878821 PMCID: PMC5584014 DOI: 10.1186/s13068-017-0892-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 08/18/2017] [Indexed: 05/11/2023]
Abstract
BACKGROUND Due to its chemical composition and abundance, lignocellulosic biomass is an attractive feedstock source for global bioenergy production. However, chemical composition variations interfere with the success of any single methodology for efficient bioenergy extraction from diverse lignocellulosic biomass sources. Although chemical component distributions could guide process design, they are difficult to obtain and vary widely among lignocellulosic biomass types. Therefore, expensive and laborious "one-size-fits-all" processes are still widely used. Here, a non-destructive and rapid analytical technology, near-infrared spectroscopy (NIRS) coupled with multivariate calibration, shows promise for addressing these challenges. Recent advances in molecular spectroscopy analysis have led to methodologies for dual-optimized NIRS using sample subset partitioning and variable selection, which could significantly enhance the robustness and accuracy of partial least squares (PLS) calibration models. Using this methodology, chemical components and theoretical ethanol yield (TEY) values were determined for 70 sweet and 77 biomass sorghum samples from six sweet and six biomass sorghum varieties grown in 2013 and 2014 at two study sites in northern China. RESULTS Chemical components and TEY of the 147 bioenergy sorghum samples were initially analyzed and compared using wet chemistry methods. Based on linear discriminant analysis, a correct classification assignment rate (either sweet or biomass type) of 99.3% was obtained using 20 principal components. Next, detailed statistical analysis demonstrated that partial optimization using sample set partitioning based on joint X-Y distances (SPXY) for sample subset partitioning enhanced the robustness and accuracy of PLS calibration models. Finally, comparisons between five dual-optimized strategies indicated that competitive adaptive reweighted sampling coupled with the SPXY (CARS-SPXY) was the most efficient and effective method for improving predictive performance of PLS multivariate calibrations. CONCLUSIONS As a dual-optimized methodology, sample subset partitioning combined with variable selection is an efficient and straightforward strategy to enhance the accuracy and robustness of NIRS models. This knowledge should facilitate generation of improved lignocellulosic biomass feedstocks for bioethanol production. Moreover, methods described here should have wider applicability for use with feedstocks incorporating multispecies biomass resource streams.
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Affiliation(s)
- Meng Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193 China
- National Energy R&D Center for Non-food Biomass, China Agricultural University, Beijing, 100193 China
| | - Jun Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193 China
- National Energy R&D Center for Non-food Biomass, China Agricultural University, Beijing, 100193 China
| | - Fu Du
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193 China
- National Energy R&D Center for Non-food Biomass, China Agricultural University, Beijing, 100193 China
| | - Boubacar Diallo
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193 China
- National Energy R&D Center for Non-food Biomass, China Agricultural University, Beijing, 100193 China
| | - Guang Hui Xie
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193 China
- National Energy R&D Center for Non-food Biomass, China Agricultural University, Beijing, 100193 China
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20
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Huang J, Li Y, Wang Y, Chen Y, Liu M, Wang Y, Zhang R, Zhou S, Li J, Tu Y, Hao B, Peng L, Xia T. A precise and consistent assay for major wall polymer features that distinctively determine biomass saccharification in transgenic rice by near-infrared spectroscopy. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:294. [PMID: 29234462 PMCID: PMC5719720 DOI: 10.1186/s13068-017-0983-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 11/26/2017] [Indexed: 05/03/2023]
Abstract
BACKGROUND The genetic modification of plant cell walls has been considered to reduce lignocellulose recalcitrance in bioenergy crops. As a result, it is important to develop a precise and rapid assay for the major wall polymer features that affect biomass saccharification in a large population of transgenic plants. In this study, we collected a total of 246 transgenic rice plants that, respectively, over-expressed and RNAi silenced 12 genes of the OsGH9 and OsGH10 family that are closely associated with cellulose and hemicellulose modification. We examined the wall polymer features and biomass saccharification among 246 transgenic plants and one wild-type plant. The samples presented a normal distribution applicable for statistical analysis and NIRS modeling. RESULTS Among the 246 transgenic rice plants, we determined largely varied wall polymer features and the biomass enzymatic saccharification after alkali pretreatment in rice straws, particularly for the fermentable hexoses, ranging from 52.8 to 95.9%. Correlation analysis indicated that crystalline cellulose and lignin levels negatively affected the hexose and total sugar yields released from pretreatment and enzymatic hydrolysis in the transgenic rice plants, whereas the arabinose levels and arabinose substitution degree (reverse xylose/arabinose ratio) exhibited positive impacts on the hexose and total sugars yields. Notably, near-infrared spectroscopy (NIRS) was applied to obtain ten equations for predicting biomass enzymatic saccharification and seven equations for distinguishing major wall polymer features. Most of the equations exhibited high R2/R2cv/R2ev and RPD values for a perfect prediction capacity. CONCLUSIONS Due to large generated populations of transgenic rice lines, this study has not only examined the key wall polymer features that distinctively affect biomass enzymatic saccharification in rice but has also established optimal NIRS models for a rapid and precise screening of major wall polymer features and lignocellulose saccharification in biomass samples. Importantly, this study has briefly explored the potential roles of a total of 12 OsGH9 and OsGH10 genes in cellulose and hemicellulose modification and cell wall remodeling in transgenic rice lines. Hence, it provides a strategy for genetic modification of plant cell walls by expressing the desired OsGH9 and OsGH10 genes that could greatly improve biomass enzymatic digestibility in rice.
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Affiliation(s)
- Jiangfeng Huang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Ying Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Yuanyuan Chen
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Mingyong Liu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Youmei Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Ran Zhang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Shiguang Zhou
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Jingyang Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, 570102 China
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Bo Hao
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Tao Xia
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
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21
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Distinct Geographical Distribution of the Miscanthus Accessions with Varied Biomass Enzymatic Saccharification. PLoS One 2016; 11:e0160026. [PMID: 27532636 PMCID: PMC4988763 DOI: 10.1371/journal.pone.0160026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 07/12/2016] [Indexed: 11/19/2022] Open
Abstract
Miscanthus is a leading bioenergy candidate for biofuels, and it thus becomes essential to characterize the desire natural Miscanthus germplasm accessions with high biomass saccharification. In this study, total 171 natural Miscanthus accessions were geographically mapped using public database. According to the equation [P(H/L| East) = P(H/L∩East)/P(East)], the probability (P) parameters were calculated on relationships between geographical distributions of Miscanthus accessions in the East of China, and related factors with high(H) or low(L) values including biomass saccahrification under 1% NaOH and 1% H2SO4 pretreatments, lignocellulose features and climate conditions. Based on the maximum P value, a golden cutting line was generated from 42°25’ N, 108°22’ E to 22°58’ N, 116°28’ E on the original locations of Miscanthus accessions with high P(H|East) values (0.800–0.813), indicating that more than 90% Miscanthus accessions were originally located in the East with high biomass saccharification. Furthermore, the averaged insolation showed high P (H|East) and P(East|H) values at 0.782 and 0.754, whereas other climate factors had low P(East|H) values, suggesting that the averaged insolation is unique factor on Miscanthus distributions for biomass saccharification. In terms of cell wall compositions and wall polymer features, both hemicelluloses level and cellulose crystallinity (CrI) of Miscanthus accessions exhibited relative high P values, suggesting that they should be the major factors accounting for geographic distributions of Miscanthus accessions with high biomass digestibility.
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Wang Y, Fan C, Hu H, Li Y, Sun D, Wang Y, Peng L. Genetic modification of plant cell walls to enhance biomass yield and biofuel production in bioenergy crops. Biotechnol Adv 2016; 34:997-1017. [PMID: 27269671 DOI: 10.1016/j.biotechadv.2016.06.001] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 05/31/2016] [Accepted: 06/01/2016] [Indexed: 02/06/2023]
Abstract
Plant cell walls represent an enormous biomass resource for the generation of biofuels and chemicals. As lignocellulose property principally determines biomass recalcitrance, the genetic modification of plant cell walls has been posed as a powerful solution. Here, we review recent progress in understanding the effects of distinct cell wall polymers (cellulose, hemicelluloses, lignin, pectin, wall proteins) on the enzymatic digestibility of biomass under various physical and chemical pretreatments in herbaceous grasses, major agronomic crops and fast-growing trees. We also compare the main factors of wall polymer features, including cellulose crystallinity (CrI), hemicellulosic Xyl/Ara ratio, monolignol proportion and uronic acid level. Furthermore, the review presents the main gene candidates, such as CesA, GH9, GH10, GT61, GT43 etc., for potential genetic cell wall modification towards enhancing both biomass yield and enzymatic saccharification in genetic mutants and transgenic plants. Regarding cell wall modification, it proposes a novel groove-like cell wall model that highlights to increase amorphous regions (density and depth) of the native cellulose microfibrils, providing a general strategy for bioenergy crop breeding and biofuel processing technology.
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Affiliation(s)
- Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chunfen Fan
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Huizhen Hu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ying Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Dan Sun
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; College of Chemistry and Chemical Engineering, Hubei University of Technology, Wuhan, Hubei 430068, China
| | - Youmei Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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Pei Y, Li Y, Zhang Y, Yu C, Fu T, Zou J, Tu Y, Peng L, Chen P. G-lignin and hemicellulosic monosaccharides distinctively affect biomass digestibility in rapeseed. BIORESOURCE TECHNOLOGY 2016; 203:325-33. [PMID: 26748046 DOI: 10.1016/j.biortech.2015.12.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 12/22/2015] [Accepted: 12/23/2015] [Indexed: 05/05/2023]
Abstract
In this study, total 19 straw samples from four Brassica species were determined with a diverse cell wall composition and varied biomass enzymatic digestibility under sulfuric acid or lime pretreatment. Correlation analysis was then performed to detect effects of cell wall compositions and wall polymer features (cellulose crystallinity, hemicellulosic monosaccharides and lignin monomers) on rapeseeds biomass digestibility. As a result, coniferyl alcohol (G-lignin) showed a strongly negative effect on biomass saccharification, whereas hemicellulosic monosaccharides (fucose, galactose, arabinose and rhamnose) were positive factors on lignocellulose digestions. Notably, chemical analyses of four typical pairs of samples indicated that hemicellulosic monosaccharides and G-lignin may coordinately influence biomass digestibility in rapeseeds. In addition, Brassica napus with lower lignin content exhibited more efficiency on both biomass enzymatic saccharification and ethanol production, compared with Brassica junjea. Hence, this study has at first time provided a genetic strategy on cell wall modification towards bioenergy rapeseed breeding.
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Affiliation(s)
- Yanjie Pei
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuyang Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Youbing Zhang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Changbing Yu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology & Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Tingdong Fu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jun Zou
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Peng Chen
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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24
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Wang Y, Huang J, Li Y, Xiong K, Wang Y, Li F, Liu M, Wu Z, Tu Y, Peng L. Ammonium oxalate-extractable uronic acids positively affect biomass enzymatic digestibility by reducing lignocellulose crystallinity in Miscanthus. BIORESOURCE TECHNOLOGY 2015; 196:391-8. [PMID: 26257050 DOI: 10.1016/j.biortech.2015.07.099] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 07/27/2015] [Accepted: 07/28/2015] [Indexed: 05/03/2023]
Abstract
Based on systems biology analyses of total 179 representative Miscanthus accessions, ammonium oxalate (AO)-extractable uronic acids could either positively affect biomass digestibility or negatively alter lignocellulose crystallinity at p<0.01 or 0.05. Comparative analysis of four typical pairs of Miscanthus samples indicated that the AO-extractable uronic acids, other than hexoses and pentoses, play a predominant role in biomass enzymatic saccharification upon various chemical pretreatments, consistent with observations of strong cell tissue destruction in situ and rough biomass residue surface in vitro in the unique Msa24 sample rich in uronic acids. Notably, AO-extraction of uronic acids could significantly increase lignocellulose CrI at p<0.05, indicating that uronic acids-rich polymers may have the interactions with β-1,4-glucan chains that reduce cellulose crystallinity. It has also suggested that increasing of uronic acids should be a useful approach for enhancing biomass enzymatic digestibility in Miscanthus and beyond.
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Affiliation(s)
- Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jiangfeng Huang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ying Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ke Xiong
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Youmei Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Fengcheng Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Mingyong Liu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhiliang Wu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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Zhang J, Zou W, Li Y, Feng Y, Zhang H, Wu Z, Tu Y, Wang Y, Cai X, Peng L. Silica distinctively affects cell wall features and lignocellulosic saccharification with large enhancement on biomass production in rice. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2015; 239:84-91. [PMID: 26398793 DOI: 10.1016/j.plantsci.2015.07.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 07/11/2015] [Accepted: 07/18/2015] [Indexed: 05/11/2023]
Abstract
Rice is a typical silicon-accumulating crop with enormous biomass residues for biofuels. Silica is a cell wall component, but its effect on the plant cell wall and biomass production remains largely unknown. In this study, a systems biology approach was performed using 42 distinct rice cell wall mutants. We found that silica levels are significantly positively correlated with three major wall polymers, indicating that silica is associated with the cell wall network. Silicon-supplied hydroculture analysis demonstrated that silica distinctively affects cell wall composition and major wall polymer features, including cellulose crystallinity (CrI), arabinose substitution degree (reverse Xyl/Ara) of xylans, and sinapyl alcohol (S) proportion in three typical rice mutants. Notably, the silicon supplement exhibited dual effects on biomass enzymatic digestibility in the mutant and wild type (NPB) after pre-treatments with 1% NaOH and 1% H2SO4. In addition, silicon supply largely enhanced plant height, mechanical strength and straw biomass production, suggesting that silica rescues mutant growth defects. Hence, this study provides potential approaches for silicon applications in biomass process and bioenergy rice breeding.
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Affiliation(s)
- Jing Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
| | - Weihua Zou
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
| | - Ying Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
| | - Yongqing Feng
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
| | - Hui Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
| | - Zhiliang Wu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
| | - Yuanyuan Tu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
| | - Yanting Wang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
| | - Xiwen Cai
- Department of Plant Science, North Dakota State University, Loftsgard Hall, P.O. Box 6050, Fargo, ND 58108, USA
| | - Liangcai Peng
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agriculture University, Wuhan 430070, China.
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26
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Lee WC, Kuan WC. Miscanthus as cellulosic biomass for bioethanol production. Biotechnol J 2015; 10:840-54. [PMID: 26013948 DOI: 10.1002/biot.201400704] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Revised: 04/09/2015] [Accepted: 05/04/2015] [Indexed: 11/08/2022]
Abstract
The members of the genus Miscanthus are potential feedstocks for biofuels because of the promising high yields of biomass per unit of planted area. This review addresses species, cultivation, and lignocellulose composition of Miscanthus, as well as pretreatment and enzyme saccharification of Miscanthus biomass for ethanol fermentation. The average cellulose contents in dried biomass of Miscanthus floridulus, Miscanthus sinensis, Miscanthus sacchariflorus, and Miscanthus × giganteus (M × G) are 37.2, 37.6, 38.9, and 41.1% wt/wt, respectively. A number of pretreatment methods have been applied in order to enhance digestibility of Miscanthus biomass for enzymatic saccharification. Pretreatment of Miscanthus using liquid hot water or alkaline results in a significant release of glucose; while glucose yields can be 90% or higher if a pretreatment like AFEX that combines both chemical and physical processes is used. As ethanol is produced by yeast fermentation of the hydrolysate from enzymatic hydrolysis of residual solids (pulp) after pretreatment, theoretical ethanol yields are 0.211-0.233 g/g-raw biomass if only cellulose is taken into account. Simultaneous saccharification and fermentation of pretreated M × G and M. lutarioriparius results in experimental ethanol yields of 0.13 and 0.15 g/g-raw biomass, respectively. Co-production of value-added products can reduce the overall production cost of bioethanol.
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Affiliation(s)
- Wen-Chien Lee
- Department of Chemical Engineering, Systems Biology and Tissue Engineering Research Center, National Chung Cheng University, Minhsiung, Chiayi, Taiwan.
| | - Wei-Chih Kuan
- Department of Chemical Engineering, Systems Biology and Tissue Engineering Research Center, National Chung Cheng University, Minhsiung, Chiayi, Taiwan
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Si S, Chen Y, Fan C, Hu H, Li Y, Huang J, Liao H, Hao B, Li Q, Peng L, Tu Y. Lignin extraction distinctively enhances biomass enzymatic saccharification in hemicelluloses-rich Miscanthus species under various alkali and acid pretreatments. BIORESOURCE TECHNOLOGY 2015; 183:248-54. [PMID: 25746301 DOI: 10.1016/j.biortech.2015.02.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 02/06/2015] [Accepted: 02/07/2015] [Indexed: 05/03/2023]
Abstract
In this study, one- and two-step pretreatments with alkali and acid were performed in the three Miscanthus species that exhibit distinct hemicelluloses levels. As a result, one-step with 4% NaOH or two-step with 2% NaOH and 1% H2SO4 was examined to be optimal for high biomass saccharification, indicating that alkali was the main effecter of pretreatments. Notably, both one- and two-step pretreatments largely enhanced biomass digestibility distinctive in hemicelluloses-rich samples by effectively co-extracting hemicelluloses and lignin. However, correlation analysis further indicated that the effective lignin extraction, other than the hemicelluloses removals, predominately determined biomass saccharification under various alkali and acid pretreatments, leading to a significant alteration of cellulose crystallinity. Hence, this study has suggested the potential approaches in bioenergy crop breeding and biomass process technology.
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Affiliation(s)
- Shengli Si
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; College of Environment and Life Science, Kaili University, Kaili 556011, China
| | - Yan Chen
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chunfen Fan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Huizhen Hu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ying Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jiangfeng Huang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Haofeng Liao
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Bo Hao
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Qing Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Liangcai Peng
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuanyuan Tu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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Li F, Zhang M, Guo K, Hu Z, Zhang R, Feng Y, Yi X, Zou W, Wang L, Wu C, Tian J, Lu T, Xie G, Peng L. High-level hemicellulosic arabinose predominately affects lignocellulose crystallinity for genetically enhancing both plant lodging resistance and biomass enzymatic digestibility in rice mutants. PLANT BIOTECHNOLOGY JOURNAL 2015; 13:514-25. [PMID: 25418842 DOI: 10.1111/pbi.12276] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 09/07/2014] [Accepted: 09/10/2014] [Indexed: 05/03/2023]
Abstract
Rice is a major food crop with enormous biomass residue for biofuels. As plant cell wall recalcitrance basically decides a costly biomass process, genetic modification of plant cell walls has been regarded as a promising solution. However, due to structural complexity and functional diversity of plant cell walls, it becomes essential to identify the key factors of cell wall modifications that could not much alter plant growth, but cause an enhancement in biomass enzymatic digestibility. To address this issue, we performed systems biology analyses of a total of 36 distinct cell wall mutants of rice. As a result, cellulose crystallinity (CrI) was examined to be the key factor that negatively determines either the biomass enzymatic saccharification upon various chemical pretreatments or the plant lodging resistance, an integrated agronomic trait in plant growth and grain production. Notably, hemicellulosic arabinose (Ara) was detected to be the major factor that negatively affects cellulose CrI probably through its interlinking with β-1,4-glucans. In addition, lignin and G monomer also exhibited the positive impact on biomass digestion and lodging resistance. Further characterization of two elite mutants, Osfc17 and Osfc30, showing normal plant growth and high biomass enzymatic digestion in situ and in vitro, revealed the multiple GH9B candidate genes for reducing cellulose CrI and XAT genes for increasing hemicellulosic Ara level. Hence, the results have suggested the potential cell wall modifications for enhancing both biomass enzymatic digestibility and plant lodging resistance by synchronically overexpressing GH9B and XAT genes in rice.
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Affiliation(s)
- Fengcheng Li
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
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Wu L, Li M, Huang J, Zhang H, Zou W, Hu S, Li Y, Fan C, Zhang R, Jing H, Peng L, Feng S. A near infrared spectroscopic assay for stalk soluble sugars, bagasse enzymatic saccharification and wall polymers in sweet sorghum. BIORESOURCE TECHNOLOGY 2015; 177:118-24. [PMID: 25484122 DOI: 10.1016/j.biortech.2014.11.073] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 11/11/2014] [Accepted: 11/15/2014] [Indexed: 05/11/2023]
Abstract
In this study, 123 sweet sorghum (Sorghum bicolor L.) accessions and 50 mutants were examined with diverse stalk soluble sugars, bagasse enzymatic saccharification and wall polymers, indicating the potential near infrared spectroscopy (NIRS) assay for those three important parameters. Using the calibration and validation sets and modified squares method, nine calibration optimal equations were generated with high determination coefficient on the calibration (R(2)) (0.81-0.99), cross-validation (R(2)cv) (0.77-0.98), and the ratio performance deviation (RPD) (2.07-7.45), which were at first time applied by single spectra for simultaneous assay of stalk soluble sugars, bagasse hydrolyzed sugars, and three major wall polymers in bioenergy sweet sorghum.
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Affiliation(s)
- Leiming Wu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Meng Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; National Energy R&D Center for Non-food Biomass, Beijing 100193, China; College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jiangfeng Huang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Hui Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Weihua Zou
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Shiwei Hu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ying Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chunfen Fan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Rui Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
| | - Haichun Jing
- Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Liangcai Peng
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Shengqiu Feng
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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30
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Payne CE, Wolfrum EJ. Rapid analysis of composition and reactivity in cellulosic biomass feedstocks with near-infrared spectroscopy. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:43. [PMID: 25834638 PMCID: PMC4381445 DOI: 10.1186/s13068-015-0222-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 02/04/2015] [Indexed: 05/02/2023]
Abstract
BACKGROUND Obtaining accurate chemical composition and reactivity (measures of carbohydrate release and yield) information for biomass feedstocks in a timely manner is necessary for the commercialization of biofuels. Our objective was to use near-infrared (NIR) spectroscopy and partial least squares (PLS) multivariate analysis to develop calibration models to predict the feedstock composition and the release and yield of soluble carbohydrates generated by a bench-scale dilute acid pretreatment and enzymatic hydrolysis assay. Major feedstocks included in the calibration models are corn stover, sorghum, switchgrass, perennial cool season grasses, rice straw, and miscanthus. RESULTS We present individual model statistics to demonstrate model performance and validation samples to more accurately measure predictive quality of the models. The PLS-2 model for composition predicts glucan, xylan, lignin, and ash (wt%) with uncertainties similar to primary measurement methods. A PLS-2 model was developed to predict glucose and xylose release following pretreatment and enzymatic hydrolysis. An additional PLS-2 model was developed to predict glucan and xylan yield. PLS-1 models were developed to predict the sum of glucose/glucan and xylose/xylan for release and yield (grams per gram). The release and yield models have higher uncertainties than the primary methods used to develop the models. CONCLUSION It is possible to build effective multispecies feedstock models for composition, as well as carbohydrate release and yield. The model for composition is useful for predicting glucan, xylan, lignin, and ash with good uncertainties. The release and yield models have higher uncertainties; however, these models are useful for rapidly screening sample populations to identify unusual samples.
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Affiliation(s)
- Courtney E Payne
- National Bioenergy Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, CO 80401 USA
| | - Edward J Wolfrum
- National Bioenergy Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, CO 80401 USA
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31
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Determination of grain protein content by near-infrared spectrometry and multivariate calibration in barley. Food Chem 2014; 162:10-5. [DOI: 10.1016/j.foodchem.2014.04.056] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 04/02/2014] [Accepted: 04/13/2014] [Indexed: 11/23/2022]
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Li M, Si S, Hao B, Zha Y, Wan C, Hong S, Kang Y, Jia J, Zhang J, Li M, Zhao C, Tu Y, Zhou S, Peng L. Mild alkali-pretreatment effectively extracts guaiacyl-rich lignin for high lignocellulose digestibility coupled with largely diminishing yeast fermentation inhibitors in Miscanthus. BIORESOURCE TECHNOLOGY 2014; 169:447-454. [PMID: 25079210 DOI: 10.1016/j.biortech.2014.07.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 07/03/2014] [Accepted: 07/05/2014] [Indexed: 05/03/2023]
Abstract
In this study, various alkali-pretreated lignocellulose enzymatic hydrolyses were evaluated by using three standard pairs of Miscanthus accessions that showed three distinct monolignol (G, S, H) compositions. Mfl26 samples with elevated G-levels exhibited significantly increased hexose yields of up to 1.61-fold compared to paired samples derived from enzymatic hydrolysis, whereas Msa29 samples with high H-levels displayed increased hexose yields of only up to 1.32-fold. In contrast, Mfl30 samples with elevated S-levels showed reduced hexose yields compared to the paired sample of 0.89-0.98 folds at p<0.01. Notably, only the G-rich biomass samples exhibited complete enzymatic hydrolysis under 4% NaOH pretreatment. Furthermore, the G-rich samples showed more effective extraction of lignin-hemicellulose complexes than the S- and H-rich samples upon NaOH pretreatment, resulting in large removal of lignin inhibitors to yeast fermentation. Therefore, this study proposes an optimal approach for minor genetic lignin modification towards cost-effective biomass process in Miscanthus.
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Affiliation(s)
- Ming Li
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Shengli Si
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Bo Hao
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yi Zha
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Can Wan
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Shufen Hong
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yongbo Kang
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jun Jia
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jing Zhang
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Meng Li
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Chunqiao Zhao
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yuanyuan Tu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Shiguang Zhou
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; Hubei Aohua Bioenergy Industrial Corporation Ltd., Hanchuan 431602, PR China
| | - Liangcai Peng
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, PR China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China; Hubei Aohua Bioenergy Industrial Corporation Ltd., Hanchuan 431602, PR China.
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Jia J, Yu B, Wu L, Wang H, Wu Z, Li M, Huang P, Feng S, Chen P, Zheng Y, Peng L. Biomass enzymatic saccharification is determined by the non-KOH-extractable wall polymer features that predominately affect cellulose crystallinity in corn. PLoS One 2014; 9:e108449. [PMID: 25251456 PMCID: PMC4177209 DOI: 10.1371/journal.pone.0108449] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 08/02/2014] [Indexed: 11/24/2022] Open
Abstract
Corn is a major food crop with enormous biomass residues for biofuel production. Due to cell wall recalcitrance, it becomes essential to identify the key factors of lignocellulose on biomass saccharification. In this study, we examined total 40 corn accessions that displayed a diverse cell wall composition. Correlation analysis showed that cellulose and lignin levels negatively affected biomass digestibility after NaOH pretreatments at p<0.05 & 0.01, but hemicelluloses did not show any significant impact on hexoses yields. Comparative analysis of five standard pairs of corn samples indicated that cellulose and lignin should not be the major factors on biomass saccharification after pretreatments with NaOH and H2SO4 at three concentrations. Notably, despite that the non-KOH-extractable residues covered 12%–23% hemicelluloses and lignin of total biomass, their wall polymer features exhibited the predominant effects on biomass enzymatic hydrolysis including Ara substitution degree of xylan (reverse Xyl/Ara) and S/G ratio of lignin. Furthermore, the non-KOH-extractable polymer features could significantly affect lignocellulose crystallinity at p<0.05, leading to a high biomass digestibility. Hence, this study could suggest an optimal approach for genetic modification of plant cell walls in bioenergy corn.
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Affiliation(s)
- Jun Jia
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, P.R. China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, P.R. China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Bin Yu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, P.R. China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, P.R. China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Leiming Wu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, P.R. China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, P.R. China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Hongwu Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, P.R. China
| | - Zhiliang Wu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, P.R. China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, P.R. China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Ming Li
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, P.R. China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, P.R. China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Pengyan Huang
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, P.R. China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, P.R. China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Shengqiu Feng
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, P.R. China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, P.R. China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Peng Chen
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, P.R. China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, P.R. China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Yonglian Zheng
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, P.R. China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Liangcai Peng
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, P.R. China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, P.R. China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
- * E-mail:
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Li M, Feng S, Wu L, Li Y, Fan C, Zhang R, Zou W, Tu Y, Jing HC, Li S, Peng L. Sugar-rich sweet sorghum is distinctively affected by wall polymer features for biomass digestibility and ethanol fermentation in bagasse. BIORESOURCE TECHNOLOGY 2014; 167:14-23. [PMID: 24968107 DOI: 10.1016/j.biortech.2014.04.086] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 04/23/2014] [Accepted: 04/26/2014] [Indexed: 05/05/2023]
Abstract
Sweet sorghum has been regarded as a typical species for rich soluble-sugar and high lignocellulose residues, but their effects on biomass digestibility remain unclear. In this study, we examined total 63 representative sweet sorghum accessions that displayed a varied sugar level at stalk and diverse cell wall composition at bagasse. Correlative analysis showed that both soluble-sugar and dry-bagasse could not significantly affect lignocellulose saccharification under chemical pretreatments. Comparative analyses of five typical pairs of samples indicated that DP of crystalline cellulose and arabinose substitution degree of non-KOH-extractable hemicelluloses distinctively affected lignocellulose crystallinity for high biomass digestibility. By comparison, lignin could not alter lignocellulose crystallinity, but the KOH-extractable G-monomer predominately determined lignin negative impacts on biomass digestions, and the G-levels released from pretreatments significantly inhibited yeast fermentation. The results also suggested potential genetic approaches for enhancing soluble-sugar level and lignocellulose digestibility and reducing ethanol conversion inhibition in sweet sorghum.
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Affiliation(s)
- Meng Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Shengqiu Feng
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Leiming Wu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ying Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chunfen Fan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Rui Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Weihua Zou
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuanyuan Tu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Hai-Chun Jing
- Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Shizhong Li
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Liangcai Peng
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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Li Z, Zhao C, Zha Y, Wan C, Si S, Liu F, Zhang R, Li F, Yu B, Yi Z, Xu N, Peng L, Li Q. The minor wall-networks between monolignols and interlinked-phenolics predominantly affect biomass enzymatic digestibility in Miscanthus. PLoS One 2014; 9:e105115. [PMID: 25133694 PMCID: PMC4136839 DOI: 10.1371/journal.pone.0105115] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 07/18/2014] [Indexed: 11/19/2022] Open
Abstract
Plant lignin is one of the major wall components that greatly contribute to biomass recalcitrance for biofuel production. In this study, total 79 representative Miscanthus germplasms were determined with wide biomass digestibility and diverse monolignol composition. Integrative analyses indicated that three major monolignols (S, G, H) and S/G ratio could account for lignin negative influence on biomass digestibility upon NaOH and H2SO4 pretreatments. Notably, the biomass enzymatic digestions were predominately affected by the non-KOH-extractable lignin and interlinked-phenolics, other than the KOH-extractable ones that cover 80% of total lignin. Furthermore, a positive correlation was found between the monolignols and phenolics at p<0.05 level in the non-KOH-extractable only, suggesting their tight association to form the minor wall-networks against cellulases accessibility. The results indicated that the non-KOH-extractable lignin-complex should be the target either for cost-effective biomass pretreatments or for relatively simply genetic modification of plant cell walls in Miscanthus.
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Affiliation(s)
- Zhengru Li
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Chunqiao Zhao
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yi Zha
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Can Wan
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Shengli Si
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Fei Liu
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Rui Zhang
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Fengcheng Li
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Bin Yu
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Zili Yi
- Department of Biotechnology, Hunan Agricultural University, Changsha, China
| | - Ning Xu
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, Huaian, China
| | - Liangcai Peng
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qing Li
- National Key Laboratory of Crop Genetic Improvement, Biomass and Bioenergy Research Centre, College of Science, Huazhong Agricultural University, Wuhan, China
- * E-mail:
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Wu Z, Zhang M, Wang L, Tu Y, Zhang J, Xie G, Zou W, Li F, Guo K, Li Q, Gao C, Peng L. Biomass digestibility is predominantly affected by three factors of wall polymer features distinctive in wheat accessions and rice mutants. BIOTECHNOLOGY FOR BIOFUELS 2013; 6:183. [PMID: 24341349 PMCID: PMC3878626 DOI: 10.1186/1754-6834-6-183] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 11/26/2013] [Indexed: 05/03/2023]
Abstract
BACKGROUND Wheat and rice are important food crops with enormous biomass residues for biofuels. However, lignocellulosic recalcitrance becomes a crucial factor on biomass process. Plant cell walls greatly determine biomass recalcitrance, thus it is essential to identify their key factors on lignocellulose saccharification. Despite it has been reported about cell wall factors on biomass digestions, little is known in wheat and rice. In this study, we analyzed nine typical pairs of wheat and rice samples that exhibited distinct cell wall compositions, and identified three major factors of wall polymer features that affected biomass digestibility. RESULTS Based on cell wall compositions, ten wheat accessions and three rice mutants were classified into three distinct groups each with three typical pairs. In terms of group I that displayed single wall polymer alternations in wheat, we found that three wall polymer levels (cellulose, hemicelluloses and lignin) each had a negative effect on biomass digestibility at similar rates under pretreatments of NaOH and H2SO4 with three concentrations. However, analysis of six pairs of wheat and rice samples in groups II and III that each exhibited a similar cell wall composition, indicated that three wall polymer levels were not the major factors on biomass saccharification. Furthermore, in-depth detection of the wall polymer features distinctive in rice mutants, demonstrated that biomass digestibility was remarkably affected either negatively by cellulose crystallinity (CrI) of raw biomass materials, or positively by both Ara substitution degree of non-KOH-extractable hemicelluloses (reverse Xyl/Ara) and p-coumaryl alcohol relative proportion of KOH-extractable lignin (H/G). Correlation analysis indicated that Ara substitution degree and H/G ratio negatively affected cellulose crystallinity for high biomass enzymatic digestion. It was also suggested to determine whether Ara and H monomer have an interlinking with cellulose chains in the future. CONCLUSIONS Using nine typical pairs of wheat and rice samples having distinct cell wall compositions and wide biomass saccharification, Ara substitution degree and monolignin H proportion have been revealed to be the dominant factors positively determining biomass digestibility upon various chemical pretreatments. The results demonstrated the potential of genetic modification of plant cell walls for high biomass saccharification in bioenergy crops.
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Affiliation(s)
- Zhiliang Wu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Mingliang Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Lingqiang Wang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuanyuan Tu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jing Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Guosheng Xie
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Weihua Zou
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Fengcheng Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Kai Guo
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Life Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Qing Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Chunbao Gao
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Liangcai Peng
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Hideno A, Kawashima A, Anzoua KG, Yamada T. Comparison of the enzymatic digestibility of physically and chemically pretreated selected line of diploid-Miscanthus sinensis Shiozuka and triploid-M.×giganteus. BIORESOURCE TECHNOLOGY 2013; 146:393-399. [PMID: 23954245 DOI: 10.1016/j.biortech.2013.07.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 07/17/2013] [Accepted: 07/19/2013] [Indexed: 06/02/2023]
Abstract
The diploid Miscanthus sinensis "Shiozuka" which was selected as a high-biomass producing line, and the triploid M. × giganteus (M×G) were treated by ball milling (physical treatment) and alkaline hydrogen peroxide treatment (AHP; chemical treatment), and their structural sugar compositions and enzymatic digestibility were compared. The structural sugar content of Shiozuka was moderate and lower than that of M×G. The Klason lignin content of Shiozuka was also lower than that of M×G. However, Shiozuka was sensitive to ball milling and AHP treatment; ball milled and AHP-treated Shiozuka had higher enzymatic digestibility than ball milled and AHP-treated M×G. Shiozuka would be promising feedstock to obtain fermentable sugars with low energy consumption. Finally, enzymes for the hydrolysis of chemically treated Miscanthus were isolated from Trichoderma reesei ATCC 66589 and Penicillium pinophilum. The sugar yield could be increased by enzymatic hydrolysis of AHP-treated samples with NaOH and H2O2 and the isolated enzymes.
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Affiliation(s)
- Akihiro Hideno
- Senior Research Fellow Center, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan.
| | - Ayato Kawashima
- Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Kossonou Guillaume Anzoua
- Field Science Center for Northern Biosphere, Hokkaido University, Kita 11, Nishi 10, Kita-ku, Sapproro 060-0811, Japan
| | - Toshihiko Yamada
- Field Science Center for Northern Biosphere, Hokkaido University, Kita 11, Nishi 10, Kita-ku, Sapproro 060-0811, Japan
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Via BK, Adhikari S, Taylor S. Modeling for proximate analysis and heating value of torrefied biomass with vibration spectroscopy. BIORESOURCE TECHNOLOGY 2013; 133:1-8. [PMID: 23402771 DOI: 10.1016/j.biortech.2013.01.108] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 01/16/2013] [Accepted: 01/17/2013] [Indexed: 05/16/2023]
Abstract
The goal of this study was to characterize the changes in biomass with torrefaction for near infrared reflectance (NIR) and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy for sweetgum, loblolly pine, and switchgrass. Calibration models were built for the prediction of proximate analysis after torrefaction. Two dimensional (2D) correlation spectroscopy between NIR and FTIR was found to precisely explain the depolymerization at key functional groups located within hemicellulose, cellulose, and lignin. This novel 2D technique also demonstrated the possibility of assigning key NIR wavenumbers based on mid IR spectra. Hemicellulose based wavenumbers were found to be most sensitive to torrefaction severity with complete degradation at 250-275°C. Lignin associated wavenumbers exhibited the least degradation to severity but was still detected with 2D correlation spectroscopy. Finally, calibration models for proximate analysis were performed and while both systems could be used for rapid monitoring, NIR performed better than FTIR.
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Affiliation(s)
- Brian K Via
- Forest Products Development Center, School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL 36849, USA.
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Li F, Ren S, Zhang W, Xu Z, Xie G, Chen Y, Tu Y, Li Q, Zhou S, Li Y, Tu F, Liu L, Wang Y, Jiang J, Qin J, Li S, Li Q, Jing HC, Zhou F, Gutterson N, Peng L. Arabinose substitution degree in xylan positively affects lignocellulose enzymatic digestibility after various NaOH/H2SO4 pretreatments in Miscanthus. BIORESOURCE TECHNOLOGY 2013; 130:629-37. [PMID: 23334020 DOI: 10.1016/j.biortech.2012.12.107] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 11/02/2012] [Accepted: 12/14/2012] [Indexed: 05/03/2023]
Abstract
Xylans are the major hemicelluloses in grasses, but their effects on biomass saccharification remain unclear. In this study, we examined the 79 representative Miscanthus accessions that displayed a diverse cell wall composition and varied biomass digestibility. Correlation analysis showed that hemicelluloses level has a strong positive effect on lignocellulose enzymatic digestion after NaOH or H(2)SO(4) pretreatment. Characterization of the monosaccharide compositions in the KOH-extractable and non-KOH-extractable hemicelluloses indicated that arabinose substitution degree of xylan is the key factor that positively affects biomass saccharification. The xylose/arabinose ratio after individual enzyme digestion revealed that the arabinose in xylan is partially associated with cellulose in the amorphous regions, which negatively affects cellulose crystallinity for high biomass digestibility. The results provide insights into the mechanism of lignocellulose enzymatic digestion upon pretreatment, and also suggest a goal for the genetic modification of hemicelluloses towards the bioenergy crop breeding of Miscanthus and grasses.
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Affiliation(s)
- Fengcheng Li
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
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40
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Zhang W, Yi Z, Huang J, Li F, Hao B, Li M, Hong S, Lv Y, Sun W, Ragauskas A, Hu F, Peng J, Peng L. Three lignocellulose features that distinctively affect biomass enzymatic digestibility under NaOH and H2SO4 pretreatments in Miscanthus. BIORESOURCE TECHNOLOGY 2013; 130:30-7. [PMID: 23298647 DOI: 10.1016/j.biortech.2012.12.029] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 12/03/2012] [Accepted: 12/05/2012] [Indexed: 05/03/2023]
Abstract
In this study, total 80 typical Miscanthus accessions were examined with diverse lignocellulose features, including cellulose crystallinity (CrI), degree of polymerization (DP), and mole number (MN). Correlation analysis revealed that the crude cellulose CrI and MN, as well as crystalline cellulose DP, displayed significantly negative influence on biomass enzymatic digestibility under pretreatments with NaOH or H(2)SO(4) at three concentrations. By contrast, the comparative analysis of two Miscanthus samples with similar cellulose contents showed that crude cellulose DP and crystalline cellulose MN were positive factors on biomass saccharification, indicating cross effects among the cellulose levels and the three cellulose features. The results can provide insights into mechanism of the lignocellulose enzymatic digestion, and also suggest potential approaches for genetic engineering of bioenergy crops.
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Affiliation(s)
- Wei Zhang
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Wuhan, China
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Slavov G, Allison G, Bosch M. Advances in the genetic dissection of plant cell walls: tools and resources available in Miscanthus. FRONTIERS IN PLANT SCIENCE 2013; 4:217. [PMID: 23847628 PMCID: PMC3701120 DOI: 10.3389/fpls.2013.00217] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Accepted: 06/05/2013] [Indexed: 05/19/2023]
Abstract
Tropical C4 grasses from the genus Miscanthus are believed to have great potential as biomass crops. However, Miscanthus species are essentially undomesticated, and genetic, molecular and bioinformatics tools are in very early stages of development. Furthermore, similar to other crops targeted as lignocellulosic feedstocks, the efficient utilization of biomass is hampered by our limited knowledge of the structural organization of the plant cell wall and the underlying genetic components that control this organization. The Institute of Biological, Environmental and Rural Sciences (IBERS) has assembled an extensive collection of germplasm for several species of Miscanthus. In addition, an integrated, multidisciplinary research programme at IBERS aims to inform accelerated breeding for biomass productivity and composition, while also generating fundamental knowledge. Here we review recent advances with respect to the genetic characterization of the cell wall in Miscanthus. First, we present a summary of recent and on-going biochemical studies, including prospects and limitations for the development of powerful phenotyping approaches. Second, we review current knowledge about genetic variation for cell wall characteristics of Miscanthus and illustrate how phenotypic data, combined with high-density arrays of single-nucleotide polymorphisms, are being used in genome-wide association studies to generate testable hypotheses and guide biological discovery. Finally, we provide an overview of the current knowledge about the molecular biology of cell wall biosynthesis in Miscanthus and closely related grasses, discuss the key conceptual and technological bottlenecks, and outline the short-term prospects for progress in this field.
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Affiliation(s)
- Gancho Slavov
- *Correspondence: Gancho Slavov, Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Plas Gogerddan, Aberystwyth, Ceredigion, Wales SY23 3EB, UK e-mail:
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Xu N, Zhang W, Ren S, Liu F, Zhao C, Liao H, Xu Z, Huang J, Li Q, Tu Y, Yu B, Wang Y, Jiang J, Qin J, Peng L. Hemicelluloses negatively affect lignocellulose crystallinity for high biomass digestibility under NaOH and H2SO4 pretreatments in Miscanthus. BIOTECHNOLOGY FOR BIOFUELS 2012; 5:58. [PMID: 22883929 PMCID: PMC3462114 DOI: 10.1186/1754-6834-5-58] [Citation(s) in RCA: 147] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2012] [Accepted: 07/18/2012] [Indexed: 05/02/2023]
Abstract
BACKGROUND Lignocellulose is the most abundant biomass on earth. However, biomass recalcitrance has become a major factor affecting biofuel production. Although cellulose crystallinity significantly influences biomass saccharification, little is known about the impact of three major wall polymers on cellulose crystallization. In this study, we selected six typical pairs of Miscanthus samples that presented different cell wall compositions, and then compared their cellulose crystallinity and biomass digestibility after various chemical pretreatments. RESULTS A Miscanthus sample with a high hemicelluloses level was determined to have a relatively low cellulose crystallinity index (CrI) and enhanced biomass digestibility at similar rates after pretreatments of NaOH and H2SO4 with three concentrations. By contrast, a Miscanthus sample with a high cellulose or lignin level showed increased CrI and low biomass saccharification, particularly after H2SO4 pretreatment. Correlation analysis revealed that the cellulose CrI negatively affected biomass digestion. Increased hemicelluloses level by 25% or decreased cellulose and lignin contents by 31% and 37% were also found to result in increased hexose yields by 1.3-times to 2.2-times released from enzymatic hydrolysis after NaOH or H2SO4 pretreatments. The findings indicated that hemicelluloses were the dominant and positive factor, whereas cellulose and lignin had synergistic and negative effects on biomass digestibility. CONCLUSIONS Using six pairs of Miscanthus samples with different cell wall compositions, hemicelluloses were revealed to be the dominant factor that positively determined biomass digestibility after pretreatments with NaOH or H2SO4 by negatively affecting cellulose crystallinity. The results suggested potential approaches to the genetic modifications of bioenergy crops.
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Affiliation(s)
- Ning Xu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
- Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, Huaian, 223300, China
| | - Wei Zhang
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Shuangfeng Ren
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Fei Liu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chunqiao Zhao
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Haofeng Liao
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhengdan Xu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jiangfeng Huang
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qing Li
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Science, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yuanyuan Tu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Bin Yu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yanting Wang
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jianxiong Jiang
- Department of Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Jingping Qin
- Department of Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Liangcai Peng
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, 430070, China
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
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