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Li Z, Wang W, Yu X, Zhao P, Li W, Zhang X, Peng M, Li S, Ruan M. Integrated analysis of DNA methylome and transcriptome revealing epigenetic regulation of CRIR1-promoted cold tolerance. BMC PLANT BIOLOGY 2024; 24:631. [PMID: 38965467 PMCID: PMC11225538 DOI: 10.1186/s12870-024-05285-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 06/10/2024] [Indexed: 07/06/2024]
Abstract
BACKGROUND DNA methylation contributes to the epigenetic regulation of nuclear gene expression, and is associated with plant growth, development, and stress responses. Compelling evidence has emerged that long non-coding RNA (lncRNA) regulates DNA methylation. Previous genetic and physiological evidence indicates that lncRNA-CRIR1 plays a positive role in the responses of cassava plants to cold stress. However, it is unclear whether global DNA methylation changes with CRIR1-promoted cold tolerance. RESULTS In this study, a comprehensive comparative analysis of DNA methylation and transcriptome profiles was performed to reveal the gene expression and epigenetic dynamics after CRIR1 overexpression. Compared with the wild-type plants, CRIR1-overexpressing plants present gained DNA methylation in over 37,000 genomic regions and lost DNA methylation in about 16,000 genomic regions, indicating a global decrease in DNA methylation after CRIR1 overexpression. Declining DNA methylation is not correlated with decreased/increased expression of the DNA methylase/demethylase genes, but is associated with increased transcripts of a few transcription factors, chlorophyll metabolism and photosynthesis-related genes, which could contribute to the CRIR1-promoted cold tolerance. CONCLUSIONS In summary, a first set of transcriptome and epigenome data was integrated in this study to reveal the gene expression and epigenetic dynamics after CRIR1 overexpression, with the identification of several TFs, chlorophyll metabolism and photosynthesis-related genes that may be involved in CRIR1-promoted cold tolerance. Therefore, our study has provided valuable data for the systematic study of molecular insights for plant cold stress response.
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Affiliation(s)
- Zhibo Li
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, P.R. China
| | - Wenjuan Wang
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, P.R. China
- College of Tropical Crops, Hainan University, Haikou, 570228, P.R. China
| | - Xiaoling Yu
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, P.R. China
| | - Pingjuan Zhao
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, P.R. China
| | - Wenbin Li
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, P.R. China
| | - Xiuchun Zhang
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, P.R. China
| | - Ming Peng
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, P.R. China
| | - Shuxia Li
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, P.R. China.
| | - Mengbin Ruan
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, P.R. China.
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Afridi MS, Kumar A, Javed MA, Dubey A, de Medeiros FHV, Santoyo G. Harnessing root exudates for plant microbiome engineering and stress resistance in plants. Microbiol Res 2024; 279:127564. [PMID: 38071833 DOI: 10.1016/j.micres.2023.127564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/02/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023]
Abstract
A wide range of abiotic and biotic stresses adversely affect plant's growth and production. Under stress, one of the main responses of plants is the modulation of exudates excreted in the rhizosphere, which consequently leads to alterations in the resident microbiota. Thus, the exudates discharged into the rhizospheric environment play a preponderant role in the association and formation of plant-microbe interactions. In this review, we aimed to provide a synthesis of the latest and most pertinent literature on the diverse biochemical and structural compositions of plant root exudates. Also, this work investigates into their multifaceted role in microbial nutrition and intricate signaling processes within the rhizosphere, which includes quorum-sensing molecules. Specifically, it explores the contributions of low molecular weight compounds, such as carbohydrates, phenolics, organic acids, amino acids, and secondary metabolites, as well as the significance of high molecular weight compounds, including proteins and polysaccharides. It also discusses the state-of-the-art omics strategies that unveil the vital role of root exudates in plant-microbiome interactions, including defense against pathogens like nematodes and fungi. We propose multiple challenges and perspectives, including exploiting plant root exudates for host-mediated microbiome engineering. In this discourse, root exudates and their derived interactions with the rhizospheric microbiota should receive greater attention due to their positive influence on plant health and stress mitigation.
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Affiliation(s)
- Muhammad Siddique Afridi
- Department of Plant Pathology, Federal University of Lavras, CP3037, 37200-900 Lavras, MG, Brazil.
| | - Ashwani Kumar
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (A Central University), Sagar 470003, MP, India
| | - Muhammad Ammar Javed
- Institute of Industrial Biotechnology, Government College University, Lahore 54000, Pakistan
| | - Anamika Dubey
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (A Central University), Sagar 470003, MP, India
| | | | - Gustavo Santoyo
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030 Morelia, Mexico.
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Physiological and Proteomic Responses of Cassava to Short-Term Extreme Cool and Hot Temperature. PLANTS 2022; 11:plants11172307. [PMID: 36079689 PMCID: PMC9460903 DOI: 10.3390/plants11172307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 08/26/2022] [Accepted: 08/31/2022] [Indexed: 11/17/2022]
Abstract
Temperature is one of the most critical factors affecting cassava metabolism and growth. This research was conducted to investigate the effects of short-term exposure to extreme cool (15 °C) and hot (45 °C) temperature on photosynthesis, biochemical and proteomics changes in potted plants of two cassava cultivars, namely Rayong 9 and Kasetsart 50. One-month-old plants were exposed to 15, 30, and 45 °C for 60 min in a temperature chamber under light intensity of 700 μmol m−2 s−1. Compared to the optimum temperature (30 °C), exposure to 15 °C resulted in 28% reduction in stomatal conductance (gs) and 62% reduction in net photosynthesis rate (Pn). In contrast, gs under 45 °C increased 2.61 folds, while Pn was reduced by 50%. The lower Pn but higher electron transport rate (ETR) of the cold-stressed plants indicated that a greater proportion of electrons was transported via alternative pathways to protect chloroplast from being damaged by reactive oxygen species (ROS). Moreover, malondialdehyde (MDA) contents, a marker related to the amount of ROS, were significantly higher at low temperature. Proteomics analysis revealed some interesting differentially expressed proteins (DEPs) including annexin, a multi-functional protein functioning in early events of heat stress signaling. In response to low-temperature stress, AP2/ERF domain-containing protein (a cold-related transcription factor) and glutaredoxin domain-containing protein (a component of redox signaling network under cold stress) were detected. Taken together, both cultivars were more sensitive to low than high temperature. Moreover, Rayong 9 displayed higher Pn under both temperature stresses, and was more efficient in controlling ROS under cold stress than Kasetsart 50.
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Physiological Responses and Proteomic Analysis on the Cold Stress Responses of Annual Pitaya (Hylocereus spp.) Branches. J CHEM-NY 2021. [DOI: 10.1155/2021/1416925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In this study, the physiological response of the annual branches of three varieties of pitaya (Xianmi, Fulong, and Zihonglong) in cold stress was investigated using a multivariate statistical method. Physiological change results showed that cold stress could decrease the moisture and chlorophyll contents, on the contrary, increase the relative electric conductivity, the contents of malonadehyde, soluble protein, soluble sugar, and free proline, and enhance the enzyme activities of peroxidase, superoxide dismutase, and catalase. Meanwhile, a comparative proteomic approach was also conducted to clarify the cold resistance-related proteins and pathways in annual pitaya branches. Proteomics results concluded that the cold tolerance of annual pitaya branches could be improved by modulating autophagy. Therefore, we hypothesized that an increased autophagy ability may be an important characteristic of the annual pitaya branches in response to cold stress conditions. Our results provide a good understanding of the physiological responses and molecular mechanisms of the annual pitaya branches in response to cold stress.
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Kumar A, Anju T, Kumar S, Chhapekar SS, Sreedharan S, Singh S, Choi SR, Ramchiary N, Lim YP. Integrating Omics and Gene Editing Tools for Rapid Improvement of Traditional Food Plants for Diversified and Sustainable Food Security. Int J Mol Sci 2021; 22:8093. [PMID: 34360856 PMCID: PMC8348985 DOI: 10.3390/ijms22158093] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 12/20/2022] Open
Abstract
Indigenous communities across the globe, especially in rural areas, consume locally available plants known as Traditional Food Plants (TFPs) for their nutritional and health-related needs. Recent research shows that many TFPs are highly nutritious as they contain health beneficial metabolites, vitamins, mineral elements and other nutrients. Excessive reliance on the mainstream staple crops has its own disadvantages. Traditional food plants are nowadays considered important crops of the future and can act as supplementary foods for the burgeoning global population. They can also act as emergency foods in situations such as COVID-19 and in times of other pandemics. The current situation necessitates locally available alternative nutritious TFPs for sustainable food production. To increase the cultivation or improve the traits in TFPs, it is essential to understand the molecular basis of the genes that regulate some important traits such as nutritional components and resilience to biotic and abiotic stresses. The integrated use of modern omics and gene editing technologies provide great opportunities to better understand the genetic and molecular basis of superior nutrient content, climate-resilient traits and adaptation to local agroclimatic zones. Recently, realizing the importance and benefits of TFPs, scientists have shown interest in the prospection and sequencing of TFPs for their improvements, cultivation and mainstreaming. Integrated omics such as genomics, transcriptomics, proteomics, metabolomics and ionomics are successfully used in plants and have provided a comprehensive understanding of gene-protein-metabolite networks. Combined use of omics and editing tools has led to successful editing of beneficial traits in several TFPs. This suggests that there is ample scope for improvement of TFPs for sustainable food production. In this article, we highlight the importance, scope and progress towards improvement of TFPs for valuable traits by integrated use of omics and gene editing techniques.
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Affiliation(s)
- Ajay Kumar
- Department of Plant Science, Central University of Kerala, Kasaragod 671316, Kerala, India; (T.A.); (S.S.)
| | - Thattantavide Anju
- Department of Plant Science, Central University of Kerala, Kasaragod 671316, Kerala, India; (T.A.); (S.S.)
| | - Sushil Kumar
- Department of Botany, Govt. Degree College, Kishtwar 182204, Jammu and Kashmir, India;
| | - Sushil Satish Chhapekar
- Molecular Genetics & Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon 34134, Korea; (S.S.C.); (S.S.); (S.R.C.)
| | - Sajana Sreedharan
- Department of Plant Science, Central University of Kerala, Kasaragod 671316, Kerala, India; (T.A.); (S.S.)
| | - Sonam Singh
- Molecular Genetics & Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon 34134, Korea; (S.S.C.); (S.S.); (S.R.C.)
| | - Su Ryun Choi
- Molecular Genetics & Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon 34134, Korea; (S.S.C.); (S.S.); (S.R.C.)
| | - Nirala Ramchiary
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, Delhi, India
| | - Yong Pyo Lim
- Molecular Genetics & Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon 34134, Korea; (S.S.C.); (S.S.); (S.R.C.)
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An F, Chen T, Li QX, Qiao J, Zhang Z, Carvalho LJ, Li K, Chen S. Protein Cross-Interactions for Efficient Photosynthesis in the Cassava Cultivar SC205 Relative to Its Wild Species. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8746-8755. [PMID: 31322881 DOI: 10.1021/acs.jafc.9b00046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The underlying mechanisms of the higher photosynthetic efficiency of cultivated cassava relative to its wild species are poorly understood. In the present study, proteins in leaves and chloroplasts were analyzed to compare the differences among the cultivar SC205, its wild ancestor W14, and the related species Glaziovii. The functions of differential proteins are associated with 10 ontology groups including photosynthesis, carbohydrate and energy metabolism, as well as potential signal pathway. The protein-protein networks among 41 differential proteins showed that PGK1 is a hub protein and protein cross-interactions affected the differentiation of photosynthetic rate. Anatomy patterns and PEPC detection suggested that SC205 has more C4 photosynthesis characteristics than Glaziovii and W14. Finally, a mechanism model of the efficient photosynthesis was proposed based on the remarkable variations in photosynthetic parameters and protein functions in the domestic cultivars.
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Affiliation(s)
- Feifei An
- Tropical Crops Genetic Resources Institute , Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava , Danzhou 571737 , China
| | - Ting Chen
- College of Agronomy , Hainan University , Haikou 571101 , China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering , University of Hawaii at Manoa , Honolulu , Hawaii 96822 , United States
| | - Jingjuan Qiao
- College of Agronomy , Hainan University , Haikou 571101 , China
| | - Zhenwen Zhang
- Tropical Crops Genetic Resources Institute , Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava , Danzhou 571737 , China
| | - Luiz Jcb Carvalho
- Genetic Resources and Biotechnology , Embrapa , Brasilia , 70770-917 Brazil
| | - Kaimian Li
- Tropical Crops Genetic Resources Institute , Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava , Danzhou 571737 , China
| | - Songbi Chen
- Tropical Crops Genetic Resources Institute , Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava , Danzhou 571737 , China
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Cheng Z, Lei N, Li S, Liao W, Shen J, Peng M. The regulatory effects of MeTCP4 on cold stress tolerance in Arabidopsis thaliana: A transcriptome analysis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 138:9-16. [PMID: 30825725 DOI: 10.1016/j.plaphy.2019.02.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 02/15/2019] [Accepted: 02/18/2019] [Indexed: 05/01/2023]
Abstract
Cassava (Manihot esculenta), an important food crop in tropical areas, is well-adapted to drought conditions, but is sensitive to cold. The expression of MeTCP4, a transcription factor involved in the regulation of plant development and abiotic stresses responses, was altered under cold stress. However, its biological function under abiotic stress responses is still unclear. Here, we show that increased MeTCP4 expression enhances cold stress tolerance in Arabidopsis (Arabidopsis thaliana). To better understand the biological role of MeTCP4, the mRNA from overexpression and wild-type (WT) plants was isolated for whole genome sequencing to identify MeTCP4-mediated cold-responsive genes. Our results identify 1341 and 797 differentially expressed genes (DEGs) affected by MeTCP4 overexpression under normal and cold conditions, respectively. Gene ontology analysis revealed that a portion of the DEGs were involved in reactive oxygen species (ROS) metabolism process after cold treatment. qRT-PCR analysis revealed that the expression of cold-responsive genes and ROS-scavenging-related genes were increased in MeTCP4 overexpression plant, which could be responsible for the reduced ROS levels and enhanced cold resistance observed in transgenic plant. The findings provide insight into mechanisms of MeTCP4-mediated cold stress response, and provide clues for development of low temperature-tolerant cassava cultivars.
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Affiliation(s)
- Zhihao Cheng
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, 570102, China
| | - Ning Lei
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Shuxia Li
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.
| | - Wenbin Liao
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Jie Shen
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Ming Peng
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.
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Meena KK, Sorty AM, Bitla UM, Choudhary K, Gupta P, Pareek A, Singh DP, Prabha R, Sahu PK, Gupta VK, Singh HB, Krishanani KK, Minhas PS. Abiotic Stress Responses and Microbe-Mediated Mitigation in Plants: The Omics Strategies. FRONTIERS IN PLANT SCIENCE 2017; 8:172. [PMID: 28232845 PMCID: PMC5299014 DOI: 10.3389/fpls.2017.00172] [Citation(s) in RCA: 250] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 01/27/2017] [Indexed: 05/19/2023]
Abstract
Abiotic stresses are the foremost limiting factors for agricultural productivity. Crop plants need to cope up adverse external pressure created by environmental and edaphic conditions with their intrinsic biological mechanisms, failing which their growth, development, and productivity suffer. Microorganisms, the most natural inhabitants of diverse environments exhibit enormous metabolic capabilities to mitigate abiotic stresses. Since microbial interactions with plants are an integral part of the living ecosystem, they are believed to be the natural partners that modulate local and systemic mechanisms in plants to offer defense under adverse external conditions. Plant-microbe interactions comprise complex mechanisms within the plant cellular system. Biochemical, molecular and physiological studies are paving the way in understanding the complex but integrated cellular processes. Under the continuous pressure of increasing climatic alterations, it now becomes more imperative to define and interpret plant-microbe relationships in terms of protection against abiotic stresses. At the same time, it also becomes essential to generate deeper insights into the stress-mitigating mechanisms in crop plants for their translation in higher productivity. Multi-omics approaches comprising genomics, transcriptomics, proteomics, metabolomics and phenomics integrate studies on the interaction of plants with microbes and their external environment and generate multi-layered information that can answer what is happening in real-time within the cells. Integration, analysis and decipherization of the big-data can lead to a massive outcome that has significant chance for implementation in the fields. This review summarizes abiotic stresses responses in plants in-terms of biochemical and molecular mechanisms followed by the microbe-mediated stress mitigation phenomenon. We describe the role of multi-omics approaches in generating multi-pronged information to provide a better understanding of plant-microbe interactions that modulate cellular mechanisms in plants under extreme external conditions and help to optimize abiotic stresses. Vigilant amalgamation of these high-throughput approaches supports a higher level of knowledge generation about root-level mechanisms involved in the alleviation of abiotic stresses in organisms.
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Affiliation(s)
- Kamlesh K. Meena
- Department of Microbiology, School of Edaphic Stress Management, National Institute of Abiotic Stress Management, Indian Council of Agricultural ResearchBaramati, India
| | - Ajay M. Sorty
- Department of Microbiology, School of Edaphic Stress Management, National Institute of Abiotic Stress Management, Indian Council of Agricultural ResearchBaramati, India
| | - Utkarsh M. Bitla
- Department of Microbiology, School of Edaphic Stress Management, National Institute of Abiotic Stress Management, Indian Council of Agricultural ResearchBaramati, India
| | - Khushboo Choudhary
- Department of Microbiology, School of Edaphic Stress Management, National Institute of Abiotic Stress Management, Indian Council of Agricultural ResearchBaramati, India
| | - Priyanka Gupta
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru UniversityNew Delhi, India
| | - Ashwani Pareek
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru UniversityNew Delhi, India
| | - Dhananjaya P. Singh
- Department of Biotechnology, National Bureau of Agriculturally Important Microorganisms, Indian Council of Agricultural ResearchKushmaur, India
| | - Ratna Prabha
- Department of Biotechnology, National Bureau of Agriculturally Important Microorganisms, Indian Council of Agricultural ResearchKushmaur, India
| | - Pramod K. Sahu
- Department of Biotechnology, National Bureau of Agriculturally Important Microorganisms, Indian Council of Agricultural ResearchKushmaur, India
| | - Vijai K. Gupta
- Molecular Glyco-Biotechnology Group, Discipline of Biochemistry, School of Natural Sciences, National University of Ireland GalwayGalway, Ireland
- Department of Chemistry and Biotechnology, ERA Chair of Green Chemistry, School of Science, Tallinn University of TechnologyTallinn, Estonia
| | - Harikesh B. Singh
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu UniversityVaranasi, India
| | - Kishor K. Krishanani
- Department of Microbiology, School of Edaphic Stress Management, National Institute of Abiotic Stress Management, Indian Council of Agricultural ResearchBaramati, India
| | - Paramjit S. Minhas
- Department of Microbiology, School of Edaphic Stress Management, National Institute of Abiotic Stress Management, Indian Council of Agricultural ResearchBaramati, India
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Yuan J, Meng J, Liang X, E Y, Yang X, Chen W. Organic Molecules from Biochar Leacheates Have a Positive Effect on Rice Seedling Cold Tolerance. FRONTIERS IN PLANT SCIENCE 2017; 8:1624. [PMID: 28979283 PMCID: PMC5611414 DOI: 10.3389/fpls.2017.01624] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 09/05/2017] [Indexed: 05/03/2023]
Abstract
Biochar is known to have a number of positive effects on plant ecophysiology. However, limited research has been carried out to date on the effects and mechanisms of biochar on plant ecophysiology under abiotic stresses, especially responses to cold. In this study, we report on a series of experiments on rice seedlings treated with different concentrations of biochar leacheates (between 0 and 10% by weight) under cold stress (10°C). Quantitative real-time PCR (qRT-PCR) and cold-resistant physiological indicator analysis at low temperatures revealed that the cold tolerance of rice seedlings increased after treatment with high concentrations of biochar leacheates (between 3 and 10% by weight). Results also show that the organic molecules in biochar leacheates enhance the cold resistance of plants when other interference factors are excluded. We suggest that the positive influence of biochar on plant cold tolerance is because of surface organic molecules which likely function by entering a plant and interacting with stress-related proteins. Thus, to verify these mechanisms, this study used gas chromatography-mass spectrometry (GC-MS) techniques, identifying 20 organic molecules in biochar extracts using the National Institute of Standards and Technology (NIST) library. Further, to illustrate how these organic molecules work, we utilized the molecular docking software Autodock to show that the organic molecule 6-(Methylthio)hexa-1,5-dien-3-ol from biochar extracts can dock with the stress-related protein zinc-dependent activator protein (ZAP1). 6-(Methylthio)hexa-1,5-dien-3-ol has a similar binding mode with the ligand succinic acid of ZAP1. It can be inferred that the organic molecule identified in this study performs the same function as the ZAP1 ligand, stimulating ZAP1 driving cold-resistant functions, and enhancing plant cold tolerance. We conclude that biochar treatment enhances cold tolerance in rice seedlings via interactions between organic molecules and stress related proteins.
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Affiliation(s)
- Jun Yuan
- Agronomy College, Shenyang Agricultural UniversityShenyang, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang Agricultural UniversityShenyang, China
| | - Jun Meng
- Agronomy College, Shenyang Agricultural UniversityShenyang, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang Agricultural UniversityShenyang, China
- *Correspondence: Jun Meng
| | - Xiao Liang
- Agronomy College, Shenyang Agricultural UniversityShenyang, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang Agricultural UniversityShenyang, China
| | - Yang E
- Agronomy College, Shenyang Agricultural UniversityShenyang, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang Agricultural UniversityShenyang, China
| | - Xu Yang
- Agronomy College, Shenyang Agricultural UniversityShenyang, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang Agricultural UniversityShenyang, China
| | - Wenfu Chen
- Agronomy College, Shenyang Agricultural UniversityShenyang, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang Agricultural UniversityShenyang, China
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