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Raza MAS, Ibrahim MA, Ditta A, Iqbal R, Aslam MU, Muhammad F, Ali S, Çiğ F, Ali B, Muhammad Ikram R, Muzamil MN, Rahman MHU, Alwahibi MS, Elshikh MS. Exploring the recuperative potential of brassinosteroids and nano-biochar on growth, physiology, and yield of wheat under drought stress. Sci Rep 2023; 13:15015. [PMID: 37696905 PMCID: PMC10495435 DOI: 10.1038/s41598-023-42007-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 08/04/2023] [Indexed: 09/13/2023] Open
Abstract
Drought stress as a result of rapidly changing climatic conditions has a direct negative impact on crop production especially wheat which is the 2nd staple food crop. To fulfill the nutritional demand under rapidly declining water resources, there is a dire need to adopt a precise, and efficient approach in the form of different amendments. In this regard, the present study investigated the impact of nano-biochar (NBC) and brassinosteroids (BR) in enhancing the growth and productivity of wheat under different drought stress conditions. The field study comprised different combinations of amendments (control, NBC, BR, and NBC + BR) under three irrigation levels (D0, D1 and D2). Among different treatments, the synergistic approach (NBC + BR) resulted in the maximum increase in different growth and yield parameters under normal as well as drought stress conditions. With synergistic approach (NBC + BR), the maximum plant height (71.7 cm), spike length (17.1), number of fertile tillers m-2 (410), no. of spikelets spike-1 (19.1), no. of grains spike-1 (37.9), 1000 grain weight (37 g), grain yield (4079 kg ha-1), biological yield (10,502 kg ha-1), harvest index (43.5). In the case of physiological parameters such as leaf area index, relative water contents, chlorophyll contents, and stomatal conductance were maximally improved with the combined application of NBC and BR. The same treatment caused an increase of 54, 10, and 7% in N, P, and K contents in grains, respectively compared to the control treatment. Similarly, the antioxidant response was enhanced in wheat plants under drought stress with the combined application of NBC and BR. In conclusion, the combined application of NBC and BR caused a significant increase in the growth, physiological and yield attributes of wheat under drought stress.
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Affiliation(s)
- Muhammad Aown Sammar Raza
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Muhammad Arif Ibrahim
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Allah Ditta
- Department of Environmental Sciences, Shaheed Benazir Bhutto University Sheringal Dir (U), Sheringal, KPK, Pakistan
- School of Biological Sciences, the University of Western Australia, Perth, WA, 6009, Australia
| | - Rashid Iqbal
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Muhammad Usman Aslam
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Faqeer Muhammad
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Shehzad Ali
- Department of Environmental Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Fatih Çiğ
- Department of Field Crops, Faculty of Agriculture, Siirt University, Siirt, Turkey
| | - Baber Ali
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | | | | | - Muhammed Habib Ur Rahman
- Department of Agronomy, MNS-University of Agriculture, Multan, Pakistan.
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Bonn, Germany.
- Department of Seed Science and Technology, Institute of Plant Breeding and Biotechnology (IPBB), MNS-University of Agriculture, Multan, Pakistan.
| | - Mona S Alwahibi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohamed S Elshikh
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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Chen Y, Liang S, Wang S, Li B, Wang K, Zhu Y, Yang R, Hao X, Yang Z, Shen Y, Jiang R, Li K. Repeated mechanical damage enhanced Aquilaria sinensis resistance to Heortia vitessoides through jasmonic acid. FRONTIERS IN PLANT SCIENCE 2023; 14:1183002. [PMID: 37615021 PMCID: PMC10442551 DOI: 10.3389/fpls.2023.1183002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 07/19/2023] [Indexed: 08/25/2023]
Abstract
Introduction The leaf-chewing pest Heortia vitessoides severely threatens the growth and development of Aquilaria sinensis. In our previous study, we found that mechanical damage (MD) to stem enhanced A. sinensis sapling resistance to H. vitessoides larvae. Methods To reveal the defense mechanisms underlying this observation, we analyzed the types and contents of volatile organic compounds (VOCs), phytohormone contents, and expression of phytohormone-related genes in response to MD and herbivory wounding(HW). Results Here, we identified several VOCs, such as the pesticides fenobucarb and 2,4-di-tert-butylphenol, in mature leaf (ML) of MD-treated plants. Compared with salicylic acid (SA) or the ethylene (ET) pathway, jasmonic acid (JA) content and JA-related genes were more strongly upregulated. Interestingly, we found a dramatic difference between JA-related upstream and downstream genes expression in YL and ML, which confirmed that JA-Ile accumulation in MD-ML and HW-ML could be derived from local damaged site. Discussion Taken together, we provide evidence that the JA pathway plays a dominant role in the A. sinensis response to MD and HW.
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Affiliation(s)
- Yingying Chen
- Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Guangxi Xylophyta Spices Research Center of Engineering Technology, Illicium and Cinnamomum Engineering Technology Research Center of National Forestry and Grassland Administration, Guangxi Forestry Research Institute, Nanning, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Shenghua Liang
- Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Guangxi Xylophyta Spices Research Center of Engineering Technology, Illicium and Cinnamomum Engineering Technology Research Center of National Forestry and Grassland Administration, Guangxi Forestry Research Institute, Nanning, China
| | - Shuyao Wang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Baocai Li
- Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Guangxi Xylophyta Spices Research Center of Engineering Technology, Illicium and Cinnamomum Engineering Technology Research Center of National Forestry and Grassland Administration, Guangxi Forestry Research Institute, Nanning, China
| | - Kun Wang
- Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Guangxi Xylophyta Spices Research Center of Engineering Technology, Illicium and Cinnamomum Engineering Technology Research Center of National Forestry and Grassland Administration, Guangxi Forestry Research Institute, Nanning, China
| | - Yongjin Zhu
- Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Guangxi Xylophyta Spices Research Center of Engineering Technology, Illicium and Cinnamomum Engineering Technology Research Center of National Forestry and Grassland Administration, Guangxi Forestry Research Institute, Nanning, China
| | - Risheng Yang
- Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Guangxi Xylophyta Spices Research Center of Engineering Technology, Illicium and Cinnamomum Engineering Technology Research Center of National Forestry and Grassland Administration, Guangxi Forestry Research Institute, Nanning, China
| | - Xin Hao
- National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agriculture University, Beijing, China
| | - Zhuoying Yang
- Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Guangxi Xylophyta Spices Research Center of Engineering Technology, Illicium and Cinnamomum Engineering Technology Research Center of National Forestry and Grassland Administration, Guangxi Forestry Research Institute, Nanning, China
| | - Yingbai Shen
- Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Guangxi Xylophyta Spices Research Center of Engineering Technology, Illicium and Cinnamomum Engineering Technology Research Center of National Forestry and Grassland Administration, Guangxi Forestry Research Institute, Nanning, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Rihong Jiang
- Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Guangxi Xylophyta Spices Research Center of Engineering Technology, Illicium and Cinnamomum Engineering Technology Research Center of National Forestry and Grassland Administration, Guangxi Forestry Research Institute, Nanning, China
| | - Kaixiang Li
- Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Guangxi Xylophyta Spices Research Center of Engineering Technology, Illicium and Cinnamomum Engineering Technology Research Center of National Forestry and Grassland Administration, Guangxi Forestry Research Institute, Nanning, China
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Yu S, Sahito ZA, Lu M, Huang Q, Du P, Chen D, Lian J, Feng Y, He Z, Yang X. Soil water stress alters differentially relative metabolic pathways affecting growth performance and metal uptake efficiency in a cadmium hyperaccumulator ecotype of Sedum alfredii. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:88986-88997. [PMID: 37450188 DOI: 10.1007/s11356-023-28691-7] [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: 02/27/2023] [Accepted: 07/04/2023] [Indexed: 07/18/2023]
Abstract
Modeling plants for biomass production and metal uptake from surrounding environment is strongly dependent on the moisture content of soil. Therefore, experiments were conducted to find out how soil moisture affects the phenotypic traits, photosynthetic efficiency, metabolic profile, and metal accumulation in the hyperaccumulating ecotype of Sedum alfredii (S. alfredii). A total of six water potential gradients were set: 0 ~ -15 kPa (T1), -15 ~ -30 kPa (T2), -30 ~ -45 kPa (T3), -45 ~ -60 kPa (T4), -60 ~ -75 kPa (T5), and -75 ~ -90 kPa (T6). Different water potential treatments had a significant effect on plant growth and metal uptake efficiency. Compared to T3, T2 was more effective in promoting plant growth and development, with an increase in biomass of 23% and 17% in both fresh weight (FW) and dry weight (DW), respectively. T2 and T3 had the highest cadmium (Cd) content in the shoot (280.2 mg/kg) and (283.3 mg/kg), respectively, whereas T1 had the lowest values (204.7 mg/kg). Cd availability for plants in the soil was affected by moving soil moisture cycles. Changes in soil moisture that were either too high or too low compared to the ideal soil water content for S. alfredii growth resulted in a significant reduction in Cd accumulation in shoots. Tryptophan, phenylalanine, and other amino acids were accumulated in T5, whereas only tryptophan and phenylalanine slightly increased in T1. Sugars and alcohols such as sucrose, trehalose, mannitol, galactinol, and mannobiose increased in T5, while they decreased significantly in T1. Interestingly, in contrast to T1, the two impaired metabolic pathways in T5 (galactose and starch metabolism) were identified to be glucose metabolic pathways. These findings provide scientific information (based on experiments) to improve biomass production and metal uptake efficiency in hyperaccumulating ecotype of S. alfredii for phytoremediation-contaminated agricultural fields.
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Affiliation(s)
- Song Yu
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Zulfiqar Ali Sahito
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Min Lu
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Qiwei Huang
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Pengtao Du
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-Saving Fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Dan Chen
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Jiapan Lian
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Ying Feng
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Zhenli He
- Institute of Food and Agricultural Sciences, Department of Soil and Water Sciences, Indian River Research and Education Center, University of Florida, Fort Pierce, FL, 34945, USA
| | - Xiaoe Yang
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China.
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Zhang Y, Xia P. The DREB transcription factor, a biomacromolecule, responds to abiotic stress by regulating the expression of stress-related genes. Int J Biol Macromol 2023:125231. [PMID: 37301338 DOI: 10.1016/j.ijbiomac.2023.125231] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/23/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023]
Abstract
Abiotic stress is a crucial factor that affects plant survival and growth and even leads to plant death in severe cases. Transcription factors can enhance the ability of plants to fight against various stresses by controlling the expression of downstream genes. The dehydration response element binding protein (DREB) is the most extensive subfamily of AP2/ERF transcription factors involved in abiotic stress. However, insufficient research on the signal network of DREB transcription factors has limited plant growth and reproduction. Furthermore, field planting of DREB transcription factors and their roles under multiple stress also require extensive research. Previous reports on DREB transcription factors have focused on the regulation of DREB expression and its roles in plant abiotic stress. In recent years, there has been new progress in DREB transcription factors. Here, the structure and classification, evolution and regulation, role in abiotic stress, and application in crops of DREB transcription factors were reviewed. And this paper highlighted the evolution of DREB1/CBF, as well as the regulation of DREB transcription factors under the participation of plant hormone signals and the roles of subgroups in abiotic stress. In the future, it will lay a solid foundation for further study of DREB transcription factors and pave the way for the cultivation of resistant plants.
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Affiliation(s)
- Yan Zhang
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Pengguo Xia
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China.
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Zhang C, Li M, Rey JD, Feng T, Lafitte R, Zheng T, Lv Y, Wu F, Fu B, Xu J, Zhang F, Zeng W, Liu E, Ali J, Wang W, Li Z. Simultaneous improvement and genetic dissection of drought and submergence tolerances in rice ( Oryza sativa L.) by selective introgression. FRONTIERS IN PLANT SCIENCE 2023; 14:1134450. [PMID: 37180379 PMCID: PMC10172858 DOI: 10.3389/fpls.2023.1134450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 03/27/2023] [Indexed: 05/16/2023]
Abstract
Introduction Drought and submergence are contrasting abiotic stresses that often occur in the same rice crop season and cause complete crop failure in many rain-fed lowland areas of Asia. Methods To develop rice varieties with good tolerances to drought and submergence, 260 introgression lines (ILs) selected for drought tolerance (DT) from nine BC2 populations were screened for submergence tolerance (ST), resulting in 124 ILs with significantly improved ST. Results Genetic characterization of the 260 ILs with DNA markers identified 59 DT quantitative trait loci (QTLs) and 68 ST QTLs with an average 55% of the identified QTLs associated with both DT and ST. Approximately 50% of the DT QTLs showed 'epigenetic' segregation with very high donor introgression and/or loss of heterozygosity (LOH). Detailed comparison of the ST QTLs identified in ILs selected only for ST with ST QTLs detected in the DT-ST selected ILs of the same populations revealed three groups of QTLs underlying the relationship between DT and ST in rice: a) QTLs with pleiotropic effects on both DT and ST; b) QTLs with opposite effects on DT and ST; and c) QTLs with independent effects on DT and ST. Combined evidence identified most likely candidate genes for eight major QTLs affecting both DT and ST. Moreover, group b QTLs were involved in the Sub1regulated pathway that were negatively associated with most group aQTLs. Discussion These results were consistent with the current knowledge that DT and ST in rice are controlled by complex cross-talks between or among different phytohormone-mediated signaling pathways. Again, the results demonstrated that the strategy of selective introgression was powerful and efficient for simultaneous improvement and genetic dissection of multiple complex traits, including DT and ST.
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Affiliation(s)
- Chaopu Zhang
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Min Li
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Jessica Domingo Rey
- International Rice Research Institute, Manila, Philippines
- Institute of Biology, College of Science, UP Diliman, Philippines
| | - Ting Feng
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Renee Lafitte
- International Rice Research Institute, Manila, Philippines
| | - Tianqing Zheng
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yamei Lv
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Fengcai Wu
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Binying Fu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jianlong Xu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Fan Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wei Zeng
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Erbao Liu
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Jauhar Ali
- International Rice Research Institute, Manila, Philippines
| | - Wensheng Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- Hainan Yazhou Bay Seed Lab/National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya, China
| | - Zhikang Li
- College of Agronomy, Anhui Agricultural University, Hefei, China
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
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Integral effects of brassinosteroids and timber waste biochar enhances the drought tolerance capacity of wheat plant. Sci Rep 2022; 12:12842. [PMID: 35896783 PMCID: PMC9329315 DOI: 10.1038/s41598-022-16866-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 07/18/2022] [Indexed: 11/20/2022] Open
Abstract
Drought stress is among the major threats that affect negatively crop productivity in arid and semi-arid regions. Probably, application of some additives such as biochar and/or brassinosteroids could mitigate this stress; however, the mechanism beyond the interaction of these two applications is not well inspected. Accordingly, a greenhouse experiment was conducted on wheat (a strategic crop) grown under deficit irrigation levels (factor A) i.e., 35% of the water holding capacity (WHC) versus 75% of WHC for 35 days while considering the following additives, i.e., (1) biochar [BC, factor B, 0, 2%] and (2) the foliar application of 24-epibrassinolide [BR, factor C, 0 (control treatment, C), 1 (BR1) or 3 (BR2) μmol)]. All treatments were replicated trice and the obtained results were statistically analyzed via the analyses of variance. Also, heat-map conceits between measured variables were calculated using the Python software. Key results indicate that drought stress led to significant reductions in all studied vegetative growth parameters (root and shoot biomasses) and photosynthetic pigments (chlorophyll a, b and total contents) while raised the levels of oxidative stress indicators. However, with the application of BC and/or BR, significance increases occurred in the growth attributes of wheat plants, its photosynthetic pigments, especially the combined additions. They also upraised the levels of enzymatic and non-enzymatic antioxidants while decreased stress indicators. Furthermore, they increased calcium (Ca), phosphorus (P) and potassium (K) content within plants. It can therefore be deduced that the integral application of BR and BC is essential to mitigate drought stress in plants.
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Lu D, Liu B, Ren M, Wu C, Ma J, Shen Y. Light Deficiency Inhibits Growth by Affecting Photosynthesis Efficiency as well as JA and Ethylene Signaling in Endangered Plant Magnolia sinostellata. PLANTS (BASEL, SWITZERLAND) 2021; 10:2261. [PMID: 34834626 PMCID: PMC8618083 DOI: 10.3390/plants10112261] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/13/2021] [Accepted: 10/13/2021] [Indexed: 12/27/2022]
Abstract
The endangered plant Magnolia sinostellata largely grows in the understory of forest and suffers light deficiency stress. It is generally recognized that the interaction between plant development and growth environment is intricate; however, the underlying molecular regulatory pathways by which light deficiency induced growth inhibition remain obscure. To understand the physiological and molecular mechanisms of plant response to shading caused light deficiency, we performed photosynthesis efficiency analysis and comparative transcriptome analysis in M. sinostellata leaves, which were subjected to shading treatments of different durations. Most of the parameters relevant to the photosynthesis systems were altered as the result of light deficiency treatment, which was also confirmed by the transcriptome analysis. Gene Ontology and KEGG pathway enrichment analyses illustrated that most of differential expression genes (DEGs) were enriched in photosynthesis-related pathways. Light deficiency may have accelerated leaf abscission by impacting the photosynthesis efficiency and hormone signaling. Further, shading could repress the expression of stress responsive transcription factors and R-genes, which confer disease resistance. This study provides valuable insight into light deficiency-induced molecular regulatory pathways in M. sinostellata and offers a theoretical basis for conservation and cultivation improvements of Magnolia and other endangered woody plants.
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Affiliation(s)
- Danying Lu
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China; (D.L.); (M.R.); (C.W.)
- College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Bin Liu
- Department of Plant Genomics, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, 08193 Bellaterra, Spain;
| | - Mingjie Ren
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China; (D.L.); (M.R.); (C.W.)
- College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Chao Wu
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China; (D.L.); (M.R.); (C.W.)
- College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Jingjing Ma
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China; (D.L.); (M.R.); (C.W.)
- College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Yamei Shen
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China; (D.L.); (M.R.); (C.W.)
- College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
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Song N, Cheng Y, Peng W, Peng E, Zhao Z, Liu T, Yi T, Dai L, Wang B, Hong Y. Genome-Wide Characterization and Expression Analysis of the SBP-Box Gene Family in Sweet Orange ( Citrus sinensis). Int J Mol Sci 2021; 22:ijms22168918. [PMID: 34445624 PMCID: PMC8396319 DOI: 10.3390/ijms22168918] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/08/2021] [Accepted: 08/16/2021] [Indexed: 12/17/2022] Open
Abstract
SBP-box is an important plant-specific transcription factor family and is involved in diverse biological processes. Here, we identified a total of 15 SBP-BOX genes in the important fruit crop sweet orange (Citrus sinensis) and characterized their gene structures, conserved domain and motif, chromosomal location, and cis-acting regulatory elements. SBP genes were classified into four subfamilies based on the amino acid sequence homology, and the classification is equally strongly supported by the gene and protein structures. Our analysis revealed that segmental duplication events were the main driving force in the evolution of CsSBP genes, and gene pairs might undergo extensive purifying selection. Further synteny analysis of the SBP members among sweet orange and other plant species provides valuable information for clarifying the CsSBP family evolutionary relationship. According to publicly available RNA-seq data and qRT-PCR analysis from various sweet orange tissues, CsSBP genes may be expressed in different tissues and developmental stages. Gene expression analysis showed variable expression profiles of CsSBP genes under various abiotic stresses, such as high and low-temperature, salt, and wound treatments, demonstrating the potential role of SBP members in sweet orange response to abiotic stress. Noticeably, all CsSBP genes were also downregulated in sweet orange upon the infection of an important fungal pathogen Diaporthe citri. Our results provide valuable information for exploring the role of SBP-Box in sweet orange.
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Affiliation(s)
- Na Song
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (N.S.); (W.P.); (E.P.); (Z.Z.); (T.L.); (T.Y.); (L.D.)
| | - Yulin Cheng
- School of Life Sciences, Chongqing University, Chongqing 401331, China;
| | - Weiye Peng
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (N.S.); (W.P.); (E.P.); (Z.Z.); (T.L.); (T.Y.); (L.D.)
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha 410128, China
| | - ErPing Peng
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (N.S.); (W.P.); (E.P.); (Z.Z.); (T.L.); (T.Y.); (L.D.)
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha 410128, China
| | - Zengling Zhao
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (N.S.); (W.P.); (E.P.); (Z.Z.); (T.L.); (T.Y.); (L.D.)
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha 410128, China
| | - Tiantian Liu
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (N.S.); (W.P.); (E.P.); (Z.Z.); (T.L.); (T.Y.); (L.D.)
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha 410128, China
| | - Tuyong Yi
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (N.S.); (W.P.); (E.P.); (Z.Z.); (T.L.); (T.Y.); (L.D.)
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha 410128, China
| | - Liangying Dai
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (N.S.); (W.P.); (E.P.); (Z.Z.); (T.L.); (T.Y.); (L.D.)
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha 410128, China
| | - Bing Wang
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (N.S.); (W.P.); (E.P.); (Z.Z.); (T.L.); (T.Y.); (L.D.)
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha 410128, China
- Correspondence: (B.W.); (Y.H.)
| | - Yanyun Hong
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (N.S.); (W.P.); (E.P.); (Z.Z.); (T.L.); (T.Y.); (L.D.)
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha 410128, China
- Correspondence: (B.W.); (Y.H.)
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9
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Tong H, Madison I, Long TA, Williams CM. Computational solutions for modeling and controlling plant response to abiotic stresses: a review with focus on iron deficiency. CURRENT OPINION IN PLANT BIOLOGY 2020; 57:8-15. [PMID: 32619968 DOI: 10.1016/j.pbi.2020.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/15/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Computational solutions enable plant scientists to model protein-mediated stress responses and characterize novel gene functions that coordinate responses to a variety of abiotic stress conditions. Recently, density functional theory was used to study proteins active sites and elucidate enzyme conversion mechanisms involved in iron deficiency responsive signaling pathways. Computational approaches for protein homology modeling and the kinetic modeling of signaling pathways have also resolved the identity and function in proteins involved in iron deficiency signaling pathways. Significant changes in gene relationships under other stress conditions, such as heat or drought stress, have been recently identified using differential network analysis, suggesting that stress tolerance is achieved through asynchronous control. Moreover, the increasing development and use of statistical modeling and systematic modeling of transcriptomic data have provided significant insight into the gene regulatory mechanisms associated with abiotic stress responses. These types of in silico approaches have facilitated the plant science community's future goals of developing multi-scale models of responses to iron deficiency stress and other abiotic stress conditions.
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Affiliation(s)
- Haonan Tong
- Electrical and Computer Engineering, North Carolina State University, Raleigh, USA
| | - Imani Madison
- Plant and Microbial Biology, North Carolina State University, Raleigh, USA
| | - Terri A Long
- Plant and Microbial Biology, North Carolina State University, Raleigh, USA.
| | - Cranos M Williams
- Electrical and Computer Engineering, North Carolina State University, Raleigh, USA.
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10
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Grewal RK, Saraf S, Deb A, Kundu S. Differentially Expressed MicroRNAs Link Cellular Physiology to Phenotypic Changes in Rice Under Stress Conditions. PLANT & CELL PHYSIOLOGY 2018; 59:2143-2154. [PMID: 30010993 DOI: 10.1093/pcp/pcy136] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Indexed: 06/08/2023]
Abstract
Plant microRNAs (miRNAs) and their target genes have important functional roles in nutrition deficiency and stress response. However, the underlying mechanisms relating relative expression of miRNAs and target mRNAs to morphological adjustments are not well defined. By combining miRNA expression profiles, corresponding target genes and transcription factors that bind to computationally identified over-represented cis-regulatory elements (CREs) common in miRNAs and target gene promoters, we implement a strategy that identifies a set of differentially expressed regulatory interactions which, in turn, relate underlying cellular mechanisms to some of the phenotypic changes observed. Integration of experimentally reported individual interactions with identified regulatory interactions explains how (i) during mineral deficiency osa-miR167 inhibits shoot growth but activates adventitious root growth by influencing free auxin content; (ii) during sulfur deficiency osa-miR394 is involved in adventitious root growth inhibition, sulfur and iron homeostasis, and auxin-mediated regulation of sulfur homeostasis; (iii) osa-miR399 contributes to cross-talk between cytokinin and phosphorus deficiency signaling; and (iv) a feed-forward loop involving the osa-miR166, trihelix and HD-ZIP III transcription factors may regulate leaf senescence during drought. This strategy not only identifies various regulatory interactions connecting phenotypic changes with cellular or molecular events triggered by stress, but also provides a framework to deepen our understanding of stress cellular physiology.
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Affiliation(s)
- Rumdeep K Grewal
- Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, India
- Department of Botany, Bhairab Ganguly College, Kolkata, India
| | - Shradha Saraf
- Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, India
| | - Arindam Deb
- Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, India
| | - Sudip Kundu
- Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, India
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11
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Pavlović I, Petřík I, Tarkowská D, Lepeduš H, Vujčić Bok V, Radić Brkanac S, Novák O, Salopek-Sondi B. Correlations between Phytohormones and Drought Tolerance in Selected Brassica Crops: Chinese Cabbage, White Cabbage and Kale. Int J Mol Sci 2018; 19:ijms19102866. [PMID: 30241414 PMCID: PMC6213169 DOI: 10.3390/ijms19102866] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/11/2018] [Accepted: 09/12/2018] [Indexed: 12/21/2022] Open
Abstract
Drought is one of the major abiotic stresses affecting the productivity of Brassica crops. To understand the role of phytohormones in drought tolerance, we subjected Chinese cabbage (B. rapa ssp. pekinensis), white cabbage (B. oleracea var. capitata), and kale (B. oleracea var. acephala) to drought and examined the stress response on the physiological, biochemical and hormonal levels. The phytohormones abscisic acid (ABA), auxin indole-3-acetic acid (IAA), brassinosteroids (BRs), cytokinins (CKs), jasmonates (JAs), and salicylic acid (SA) were analyzed by ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC-MS/MS). Based on the physiological and biochemical markers the Chinese cabbage exhibited the lowest tolerance, followed by the white cabbage, while the kale appeared to be the most tolerant to drought. The drought tolerance of the kale correlated with increased levels of SA, ABA, IAA, CKs iP(R) and cZ(R), and typhasterol (TY), a precursor of active BRs. In contrast, the drought sensitivity of the Chinese cabbage correlated with a significant increase in ABA, JAs and the active BRs castasterol (CS) and brassinolide (BL). The moderately tolerant white cabbage, positioned between the kale and Chinese cabbage, showed more similarity in terms of the phytohormone patterns with the kale. We concluded that the drought tolerance in Brassicaceae is mostly determined by the increased endogenous levels of IAA, CKs, ABA and SA and the decreased levels of active BRs.
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Affiliation(s)
- Iva Pavlović
- Laboratory for Chemical Biology, Department of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb 10000, Croatia.
| | - Ivan Petřík
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science of Palacký University & Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, Olomouc 78371, Czech Republic.
| | - Danuše Tarkowská
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science of Palacký University & Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, Olomouc 78371, Czech Republic.
| | - Hrvoje Lepeduš
- Faculty of Humanities and Social Sciences, and Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Lorenza Jägera 9, Osijek 31000, Croatia.
| | - Valerija Vujčić Bok
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, Zagreb 10000, Croatia.
| | - Sandra Radić Brkanac
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, Zagreb 10000, Croatia.
| | - Ondřej Novák
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science of Palacký University & Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, Olomouc 78371, Czech Republic.
| | - Branka Salopek-Sondi
- Laboratory for Chemical Biology, Department of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb 10000, Croatia.
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12
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Wei T, Deng K, Wang H, Zhang L, Wang C, Song W, Zhang Y, Chen C. Comparative Transcriptome Analyses Reveal Potential Mechanisms of Enhanced Drought Tolerance in Transgenic Salvia Miltiorrhiza Plants Expressing AtDREB1A from Arabidopsis. Int J Mol Sci 2018. [PMID: 29534548 PMCID: PMC5877688 DOI: 10.3390/ijms19030827] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In our previous study, drought-resistant transgenic plants of Salvia miltiorrhiza were produced via overexpression of the transcription factor AtDREB1A. To unravel the molecular mechanisms underpinning elevated drought tolerance in transgenic plants, in the present study we compared the global transcriptional profiles of wild-type (WT) and AtDREB1A-expressing transgenic plants using RNA-sequencing (RNA-seq). Using cluster analysis, we identified 3904 differentially expressed genes (DEGs). Compared with WT plants, 423 unigenes were up-regulated in pRD29A::AtDREB1A-31 before drought treatment, while 936 were down-regulated and 1580 and 1313 unigenes were up- and down-regulated after six days of drought. COG analysis revealed that the 'signal transduction mechanisms' category was highly enriched among these DEGs both before and after drought stress. Based on the Kyoto Encyclopedia of Genes and Genomes (KEGG) annotation, DEGs associated with "ribosome", "plant hormone signal transduction", photosynthesis", "plant-pathogen interaction", "glycolysis/gluconeogenesis" and "carbon fixation" are hypothesized to perform major functions in drought resistance in AtDREB1A-expressing transgenic plants. Furthermore, the number of DEGs associated with different transcription factors increased significantly after drought stress, especially the AP2/ERF, bZIP and MYB protein families. Taken together, this study substantially expands the transcriptomic information for S. miltiorrhiza and provides valuable clues for elucidating the mechanism of AtDREB1A-mediated drought tolerance in transgenic plants.
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Affiliation(s)
- Tao Wei
- National Engineering Research Center of Pesticide (Tianjin), Nankai University, Tianjin 300071, China.
- College of Life Sciences, Nankai University, Tianjin 300071, China.
- School of Life Sciences and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Kejun Deng
- School of Life Sciences and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
- Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Hongbin Wang
- College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Lipeng Zhang
- College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Chunguo Wang
- College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Wenqin Song
- College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Yong Zhang
- School of Life Sciences and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
- Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Chengbin Chen
- College of Life Sciences, Nankai University, Tianjin 300071, China.
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13
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Biselli C, Bagnaresi P, Faccioli P, Hu X, Balcerzak M, Mattera MG, Yan Z, Ouellet T, Cattivelli L, Valè G. Comparative Transcriptome Profiles of Near-Isogenic Hexaploid Wheat Lines Differing for Effective Alleles at the 2DL FHB Resistance QTL. FRONTIERS IN PLANT SCIENCE 2018; 9:37. [PMID: 29434615 PMCID: PMC5797473 DOI: 10.3389/fpls.2018.00037] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 01/09/2018] [Indexed: 05/07/2023]
Abstract
Fusarium head blight (FHB), caused by the fungus Fusarium graminearum, represents one of the major wheat diseases worldwide, determining severe yield losses and reduction of grain quality due to the accumulation of mycotoxins. The molecular response associated with the wheat 2DL FHB resistance QTL was mined through a comprehensive transcriptomic analysis of the early response to F. graminearum infection, at 3 days post-inoculation, in spikelets and rachis. The analyses were conducted on two near isogenic lines (NILs) differing for the presence of the 2DL QTL (2-2618, resistant 2DL+ and 2-2890, susceptible null). The general response to fungal infection in terms of mRNAs accumulation trend was similar in both NILs, even though involving an higher number of DEGs in the susceptible NIL, and included down-regulation of the primary and energy metabolism, up-regulation of enzymes implicated in lignin and phenylpropanoid biosynthesis, activation of hormons biosynthesis and signal transduction pathways and genes involved in redox homeostasis and transcriptional regulation. The search for candidate genes with expression profiles associated with the 2DL QTL for FHB resistance led to the discovery of processes differentially modulated in the R and S NILs related to cell wall metabolism, sugar and JA signaling, signal reception and transduction, regulation of the redox status and transcription factors. Wheat FHB response-related miRNAs differentially regulated were also identified as putatively implicated in the superoxide dismutase activities and affecting genes regulating responses to biotic/abiotic stresses and auxin signaling. Altered gene expression was also observed for fungal non-codingRNAs. The putative targets of two of these were represented by the wheat gene WIR1A, involved in resistance response, and a gene encoding a jacalin-related lectin protein, which participate in biotic and abiotic stress response, supporting the presence of a cross-talk between the plant and the fungus.
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Affiliation(s)
- Chiara Biselli
- CREA–Research Centre for Genomics and Bioinformatics, Fiorenzuola d'Arda, Italy
- *Correspondence: Chiara Biselli
| | - Paolo Bagnaresi
- CREA–Research Centre for Genomics and Bioinformatics, Fiorenzuola d'Arda, Italy
| | - Primetta Faccioli
- CREA–Research Centre for Genomics and Bioinformatics, Fiorenzuola d'Arda, Italy
| | - Xinkun Hu
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Margaret Balcerzak
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Maria G. Mattera
- Plant Breeding Department, Institute for Sustainable Agriculture, Cordoba, Spain
- Department of Genetics–ETSIAM, University of Cordoba, Cordoba, Spain
| | - Zehong Yan
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Therese Ouellet
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Luigi Cattivelli
- CREA–Research Centre for Genomics and Bioinformatics, Fiorenzuola d'Arda, Italy
| | - Giampiero Valè
- CREA–Research Centre for Genomics and Bioinformatics, Fiorenzuola d'Arda, Italy
- CREA–Research Centre for Cereal and Industrial Crops, Vercelli, Italy
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14
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Chatterjee A, Huma B, Shaw R, Kundu S. Reconstruction of Oryza sativa indica Genome Scale Metabolic Model and Its Responses to Varying RuBisCO Activity, Light Intensity, and Enzymatic Cost Conditions. FRONTIERS IN PLANT SCIENCE 2017; 8:2060. [PMID: 29250098 PMCID: PMC5715477 DOI: 10.3389/fpls.2017.02060] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 11/17/2017] [Indexed: 05/12/2023]
Abstract
To combat decrease in rice productivity under different stresses, an understanding of rice metabolism is needed. Though there are different genome scale metabolic models (GSMs) of Oryza sativa japonica, no GSM with gene-protein-reaction association exist for Oryza sativa indica. Here, we report a GSM, OSI1136 of O.s. indica, which includes 3602 genes and 1136 metabolic reactions and transporters distributed across the cytosol, mitochondrion, peroxisome, and chloroplast compartments. Flux balance analysis of the model showed that for varying RuBisCO activity (Vc/Vo) (i) the activity of the chloroplastic malate valve increases to transport reducing equivalents out of the chloroplast under increased photorespiratory conditions and (ii) glyceraldehyde-3-phosphate dehydrogenase and phosphoglycerate kinase can act as source of cytosolic ATP under decreased photorespiration. Under increasing light conditions we observed metabolic flexibility, involving photorespiration, chloroplastic triose phosphate and the dicarboxylate transporters of the chloroplast and mitochondrion for redox and ATP exchanges across the intracellular compartments. Simulations under different enzymatic cost conditions revealed (i) participation of peroxisomal glutathione-ascorbate cycle in photorespiratory H2O2 metabolism (ii) different modes of the chloroplastic triose phosphate transporters and malate valve, and (iii) two possible modes of chloroplastic Glu-Gln transporter which were related with the activity of chloroplastic and cytosolic isoforms of glutamine synthetase. Altogether, our results provide new insights into plant metabolism.
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Affiliation(s)
| | | | | | - Sudip Kundu
- Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, India
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15
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Shigenaga AM, Berens ML, Tsuda K, Argueso CT. Towards engineering of hormonal crosstalk in plant immunity. CURRENT OPINION IN PLANT BIOLOGY 2017. [PMID: 28624670 DOI: 10.1016/j.pbi.2017.04.021] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Plant hormones regulate physiological responses in plants, including responses to pathogens and beneficial microbes. The last decades have provided a vast amount of evidence about the contribution of different plant hormones to plant immunity, and also of how they cooperate to orchestrate immunity activation, in a process known as hormone crosstalk. In this review we highlight the complexity of hormonal crosstalk in immunity and approaches currently being used to further understand this process, as well as perspectives to engineer hormone crosstalk for enhanced pathogen resistance and overall plant fitness.
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Affiliation(s)
- Alexandra M Shigenaga
- Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, CO, USA
| | - Matthias L Berens
- Department of Plant-Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829 Cologne, Germany
| | - Kenichi Tsuda
- Department of Plant-Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829 Cologne, Germany.
| | - Cristiana T Argueso
- Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, CO, USA.
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16
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Rao X, Dixon RA. Brassinosteroid Mediated Cell Wall Remodeling in Grasses under Abiotic Stress. FRONTIERS IN PLANT SCIENCE 2017; 8:806. [PMID: 28567047 PMCID: PMC5434148 DOI: 10.3389/fpls.2017.00806] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 04/28/2017] [Indexed: 05/19/2023]
Abstract
Unlike animals, plants, being sessile, cannot escape from exposure to severe abiotic stresses such as extreme temperature and water deficit. The dynamic structure of plant cell wall enables them to undergo compensatory changes, as well as maintain physical strength, with changing environments. Plant hormones known as brassinosteroids (BRs) play a key role in determining cell wall expansion during stress responses. Cell wall deposition differs between grasses (Poaceae) and dicots. Grass species include many important food, fiber, and biofuel crops. In this article, we focus on recent advances in BR-regulated cell wall biosynthesis and remodeling in response to stresses, comparing our understanding of the mechanisms in grass species with those in the more studied dicots. A more comprehensive understanding of BR-mediated changes in cell wall integrity in grass species will benefit the development of genetic tools to improve crop productivity, fiber quality and plant biomass recalcitrance.
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Affiliation(s)
- Xiaolan Rao
- BioDiscovery Institute and Department of Biological Sciences, University of North Texas, DentonTX, United States
- BioEnergy Science Center, US Department of Energy, Oak RidgeTN, United States
- *Correspondence: Xiaolan Rao,
| | - Richard A. Dixon
- BioDiscovery Institute and Department of Biological Sciences, University of North Texas, DentonTX, United States
- BioEnergy Science Center, US Department of Energy, Oak RidgeTN, United States
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17
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Gruszka D, Janeczko A, Dziurka M, Pociecha E, Oklestkova J, Szarejko I. Barley Brassinosteroid Mutants Provide an Insight into Phytohormonal Homeostasis in Plant Reaction to Drought Stress. FRONTIERS IN PLANT SCIENCE 2016; 7:1824. [PMID: 27994612 PMCID: PMC5133261 DOI: 10.3389/fpls.2016.01824] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 11/18/2016] [Indexed: 05/02/2023]
Abstract
Brassinosteroids (BRs) are a class of steroid phytohormones, which regulate various processes of morphogenesis and physiology-from seed development to regulation of flowering and senescence. An accumulating body of evidence indicates that BRs take part in regulation of physiological reactions to various stress conditions, including drought. Many of the physiological functions of BRs are regulated by a complicated, and not fully elucidated network of interactions with metabolic pathways of other phytohormones. Therefore, the aim of this study was to characterize phytohormonal homeostasis in barley (Hordeum vulgare) in reaction to drought and validate role of BRs in regulation of this process. Material of this study included the barley cultivar "Bowman" and five Near-Isogenic Lines (NILs) representing characterized semi-dwarf mutants of several genes encoding enzymes participating in BR biosynthesis and signaling. Analysis of endogenous BRs concentrations in these NILs confirmed that their phenotypes result from abnormalities in BR metabolism. In general, concentrations of 18 compounds, representing various classes of phytohormones, including brassinosteroids, auxins, cytokinins, gibberellins, abscisic acid, salicylic acid and jasmonic acid were analyzed under control and drought conditions in the "Bowman" cultivar and the BR-deficient NILs. Drought induced a significant increase in accumulation of the biologically active form of BRs-castasterone in all analyzed genotypes. Another biologically active form of BRs-24-epi-brassinolide-was identified in one, BR-insensitive NIL under normal condition, but its accumulation was drought-induced in all analyzed genotypes. Analysis of concentration profiles of several compounds representing gibberellins allowed an insight into the BR-dependent regulation of gibberellin biosynthesis. The concentration of the gibberellic acid GA7 was significantly lower in all NILs when compared with the "Bowman" cultivar, indicating that GA7 biosynthesis represents an enzymatic step at which the stimulating effect of BRs on gibberellin biosynthesis occurs. Moreover, the accumulation of GA7 is significantly induced by drought in all the genotypes. Biosynthesis of jasmonic acid is also a BR-dependent process, as all the NILs accumulated much lower concentrations of this hormone when compared with the "Bowman" cultivar under normal condition, however the accumulation of jasmonic acid, abscisic acid and salicylic acid were significantly stimulated by drought.
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Affiliation(s)
- Damian Gruszka
- Department of Genetics, Faculty of Biology and Environment Protection, University of SilesiaKatowice, Poland
- *Correspondence: Damian Gruszka
| | - Anna Janeczko
- Franciszek Gorski Institute of Plant Physiology, Polish Academy of SciencesKrakow, Poland
| | - Michal Dziurka
- Franciszek Gorski Institute of Plant Physiology, Polish Academy of SciencesKrakow, Poland
| | - Ewa Pociecha
- Department of Plant Physiology, University of Agriculture in KrakowKrakow, Poland
| | - Jana Oklestkova
- Laboratory of Growth Regulators, Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany, Czech Academy of Sciences, Palacký UniversityOlomouc, Czechia
| | - Iwona Szarejko
- Department of Genetics, Faculty of Biology and Environment Protection, University of SilesiaKatowice, Poland
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