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Li T, Lin Z, Zhu C, Yang K, Sun H, Li H, Wang J, Gao Z. Identification and characterization of FBA genes in moso bamboo reveals PeFBA8 related to photosynthetic carbon metabolism. Int J Biol Macromol 2024; 275:132885. [PMID: 38838894 DOI: 10.1016/j.ijbiomac.2024.132885] [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: 01/07/2024] [Revised: 05/21/2024] [Accepted: 06/02/2024] [Indexed: 06/07/2024]
Abstract
Fructose 1,6-bisphosphate aldolase (FBA) is a pivotal enzyme, which plays a critical role in fixing CO2 through the process of in the Calvin cycle. In this study, a comprehensive exploration of the FBA family genes in moso bamboo (Phyllostachys edulis) was conducted by the bioinformatics and biological analyses. A total of nine FBA genes (PeFBA1-PeFBA9) were identified in the moso bamboo genome. The expression patterns of PeFBAs across diverse tissues of moso bamboo suggested that they have multifaceted functionality. Notably, PeFBA8 might play an important role in regulating photosynthetic carbon metabolism. Co-expression and cis-element analyses demonstrated that PeFBA8 was regulated by a photosynthetic regulatory transcription factor (PeGLK1), which was confirmed by yeast one-hybrid and dual-luciferase assays. In-planta gene editing analysis revealed that the edited PeFBA8 mutants displayed compromised photosynthetic functionality, characterized by reduced electron transport rate and impaired photosystem I, leading to decreased photosynthesis rate overall, compared to the unedited control. The recombinant protein of PeFBA8 from prokaryotic expression exhibited enzymatic catalytic function. The findings suggest that the expression of PeFBA8 can affect photosynthetic efficiency of moso bamboo leaves, which underlines the potential of leveraging PeFBA8's regulatory mechanism to breed bamboo varieties with enhanced carbon fixation capability.
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Affiliation(s)
- Tiankuo Li
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Beijing 100102, China; Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Zeming Lin
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Beijing 100102, China; Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Chenglei Zhu
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Beijing 100102, China; Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Kebin Yang
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Beijing 100102, China; Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Huayu Sun
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Beijing 100102, China; Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Hui Li
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Beijing 100102, China; Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Jiangfei Wang
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Beijing 100102, China; Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Zhimin Gao
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Beijing 100102, China; Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China.
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Zhang J, Liu Y, Zhou Z, Yang L, Xue Z, Li Q, Cai B. Genome-Wide Characterization of Fructose 1,6-Bisphosphate Aldolase Genes and Expression Profile Reveals Their Regulatory Role in Abiotic Stress in Cucumber. Int J Mol Sci 2024; 25:7687. [PMID: 39062929 PMCID: PMC11276831 DOI: 10.3390/ijms25147687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/11/2024] [Accepted: 06/25/2024] [Indexed: 07/28/2024] Open
Abstract
The fructose-1,6-bisphosphate aldolase (FBA) gene family exists in higher plants, with the genes of this family playing significant roles in plant growth and development, as well as response to abiotic stresses. However, systematic reports on the FBA gene family and its functions in cucumber are lacking. In this study, we identified five cucumber FBA genes, named CsFBA1-5, that are distributed randomly across chromosomes. Phylogenetic analyses involving these cucumber FBAs, alongside eight Arabidopsis FBA proteins and eight tomato FBA proteins, were conducted to assess their homology. The CsFBAs were grouped into two clades. We also analyzed the physicochemical properties, motif composition, and gene structure of the cucumber FBAs. This analysis highlighted differences in the physicochemical properties and revealed highly conserved domains within the CsFBA family. Additionally, to explore the evolutionary relationships of the CsFBA family further, we constructed comparative syntenic maps with Arabidopsis and tomato, which showed high homology but only one segmental duplication event within the cucumber genome. Expression profiles indicated that the CsFBA gene family is responsive to various abiotic stresses, including low temperature, heat, and salt. Taken together, the results of this study provide a theoretical foundation for understanding the evolution of and future research into the functional characterization of cucumber FBA genes during plant growth and development.
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Affiliation(s)
| | | | | | | | | | - Qingyun Li
- College of Horticulture, Hebei Agricultural University, Baoding 171000, China; (J.Z.); (Y.L.); (Z.Z.); (L.Y.); (Z.X.)
| | - Bingbing Cai
- College of Horticulture, Hebei Agricultural University, Baoding 171000, China; (J.Z.); (Y.L.); (Z.Z.); (L.Y.); (Z.X.)
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Li T, Hou X, Sun Z, Ma B, Wu X, Feng T, Ai H, Huang X, Li R. Characterization of FBA genes in potato ( Solanum tuberosum L.) and expression patterns in response to light spectrum and abiotic stress. Front Genet 2024; 15:1364944. [PMID: 38686025 PMCID: PMC11057440 DOI: 10.3389/fgene.2024.1364944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 03/29/2024] [Indexed: 05/02/2024] Open
Abstract
Fructose-1, 6-bisphosphate aldolase (FBA) plays vital roles in plant growth, development, and response to abiotic stress. However, genome-wide identification and structural characterization of the potato (Solanum tuberosum L.) FBA gene family has not been systematically analyzed. In this study, we identified nine StFBA gene members in potato, with six StFBA genes localized in the chloroplast and three in the cytoplasm. The analysis of gene structures, protein structures, and phylogenetic relationships indicated that StFBA genes were divided into Class I and II, which exhibited significant differences in structure and function. Synteny analysis revealed that segmental duplication events promoted the expansion of the StFBA gene family. Promoter analysis showed that most StFBA genes contained cis-regulatory elements associated with light and stress responses. Expression analysis showed that StFBA3, StFBA8, and StFBA9 showing significantly higher expression levels in leaf, stolon, and tuber under blue light, indicating that these genes may improve photosynthesis and play an important function in regulating the induction and expansion of microtubers. Expression levels of the StFBA genes were influenced by drought and salt stress, indicating that they played important roles in abiotic stress. This work offers a theoretical foundation for in-depth understanding of the evolution and function of StFBA genes, as well as providing the basis for the genetic improvement of potatoes.
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Affiliation(s)
- Ting Li
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Xinyue Hou
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Zhanglun Sun
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Bin Ma
- Country College of Life Sciences, Shihezi University, Shihezi, China
| | - Xingxing Wu
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Tingting Feng
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Hao Ai
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Xianzhong Huang
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Ruining Li
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, China
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Li T, Li H, Zhu C, Yang K, Lin Z, Wang J, Gao Z. Unveiling the Biological Function of Phyllostachys edulis FBA6 ( PeFBA6) through the Identification of the Fructose-1,6-Bisphosphate Aldolase Gene. PLANTS (BASEL, SWITZERLAND) 2024; 13:968. [PMID: 38611497 PMCID: PMC11013174 DOI: 10.3390/plants13070968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/22/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024]
Abstract
Fructose-1,6-bisphosphate aldolase (FBA) is a pivotal enzyme in various metabolic pathways, including glycolysis, gluconeogenesis, and the Calvin cycle. It plays a critical role in CO2 fixation. Building on previous studies on the FBA gene family in Moso bamboo, our study revealed the biological function of PeFBA6. To identify CSN5 candidate genes, this study conducted a yeast two-hybrid library screening experiment. Subsequently, the interaction between CSN5 and PeFBA6 was verified using yeast two-hybrid and LCI experiments. This investigation uncovered evidence that FBA may undergo deubiquitination to maintain glycolytic stability. To further assess the function of PeFBA6, it was overexpressed in rice. Various parameters were determined, including the light response curve, CO2 response curve, and the levels of glucose, fructose, sucrose, and starch in the leaves of overexpressing rice. The results demonstrated that overexpressed rice exhibited a higher saturation light intensity, net photosynthetic rate, maximum carboxylation rate, respiration rate, and increased levels of glucose, fructose, and starch than wild-type rice. These findings indicated that PeFBA6 not only enhanced the photoprotection ability of rice but also improved the photosynthetic carbon metabolism. Overall, this study enhanced our understanding of the function of FBA and revealed the biological function of PeFBA6, thereby providing a foundation for the development of excellent carbon fixation bamboo varieties through breeding.
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Affiliation(s)
- Tiankuo Li
- Key Laboratory of State Forestry and Grassland Administration/Beijing on Bamboo and Rattan Science and Technology, Beijing 100102, China
- Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Hui Li
- Key Laboratory of State Forestry and Grassland Administration/Beijing on Bamboo and Rattan Science and Technology, Beijing 100102, China
- Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Chenglei Zhu
- Key Laboratory of State Forestry and Grassland Administration/Beijing on Bamboo and Rattan Science and Technology, Beijing 100102, China
- Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Kebin Yang
- Key Laboratory of State Forestry and Grassland Administration/Beijing on Bamboo and Rattan Science and Technology, Beijing 100102, China
- Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Zeming Lin
- Key Laboratory of State Forestry and Grassland Administration/Beijing on Bamboo and Rattan Science and Technology, Beijing 100102, China
- Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Jiangfei Wang
- Key Laboratory of State Forestry and Grassland Administration/Beijing on Bamboo and Rattan Science and Technology, Beijing 100102, China
- Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Zhimin Gao
- Key Laboratory of State Forestry and Grassland Administration/Beijing on Bamboo and Rattan Science and Technology, Beijing 100102, China
- Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
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Zhu XG, Treves H, Zhao H. Mechanisms controlling metabolite concentrations of the Calvin Benson Cycle. Semin Cell Dev Biol 2024; 155:3-9. [PMID: 36858897 DOI: 10.1016/j.semcdb.2023.02.009] [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: 08/14/2022] [Revised: 01/28/2023] [Accepted: 02/23/2023] [Indexed: 03/03/2023]
Abstract
Maintaining proper metabolite levels in a complex metabolic network is crucial for maintaining a high flux through the network. In this paper, we discuss major regulatory mechanisms over the Calvin Benson Cycle (CBC) with regard to their roles in conferring homeostasis of metabolite levels in CBC. These include: 1) Redox regulation of enzymes in the CBC on one hand ensures that metabolite levels stay above certain lower bounds under low light while on the other hand increases the flux through the CBC under high light. 2) Metabolite regulations, especially allosteric regulations of major regulatory enzymes, ensure the rapid up-regulation of fluxes to ensure sufficient amount of triose phosphate is available for end product synthesis and concurrently avoid phosphate limitation. 3) A balanced activities of enzymes in the CBC help maintain balanced flux through CBC; some innate product feedback mechanisms, in particular the ADP feedback regulation of GAPDH and F6P feedback regulation of FBPase, exist in CBC to achieve such a balanced enzyme activities and hence flux distribution in the CBC for greater photosynthetic efficiency. Transcriptional regulation and natural variations of enzymes controlling CBC metabolite homeostasis should be further explored to maximize the potential of engineering CBC for greater efficiency.
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Affiliation(s)
- Xin-Guang Zhu
- Center of Excellence for Molecular Plant Sciences, Chinese Academy of Science, Shanghai 200032, China.
| | - Haim Treves
- School of Plant Sciences and Food Security, Tel-Aviv University, 6997801, Israel
| | - Honglong Zhao
- Center of Excellence for Molecular Plant Sciences, Chinese Academy of Science, Shanghai 200032, China
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Gurrieri L, Sparla F, Zaffagnini M, Trost P. Dark complexes of the Calvin-Benson cycle in a physiological perspective. Semin Cell Dev Biol 2024; 155:48-58. [PMID: 36889996 DOI: 10.1016/j.semcdb.2023.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023]
Abstract
Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and phosphoribulokinase (PRK) are two enzymes of the Calvin Benson cycle that stand out for some peculiar properties they have in common: (i) they both use the products of light reactions for catalysis (NADPH for GAPDH, ATP for PRK), (ii) they are both light-regulated through thioredoxins and (iii) they are both involved in the formation of regulatory supramolecular complexes in the dark or low photosynthetic conditions, with or without the regulatory protein CP12. In the complexes, enzymes are transiently inactivated but ready to recover full activity after complex dissociation. Fully active GAPDH and PRK are in large excess for the functioning of the Calvin-Benson cycle, but they can limit the cycle upon complex formation. Complex dissociation contributes to photosynthetic induction. CP12 also controls PRK concentration in model photosynthetic organisms like Arabidopsis thaliana and Chlamydomonas reinhardtii. The review combines in vivo and in vitro data into an integrated physiological view of the role of GAPDH and PRK dark complexes in the regulation of photosynthesis.
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Affiliation(s)
- Libero Gurrieri
- University of Bologna, Department of Pharmacy and Biotechnology, Via Irnerio 42, 40126 Bologna, Italy.
| | - Francesca Sparla
- University of Bologna, Department of Pharmacy and Biotechnology, Via Irnerio 42, 40126 Bologna, Italy.
| | - Mirko Zaffagnini
- University of Bologna, Department of Pharmacy and Biotechnology, Via Irnerio 42, 40126 Bologna, Italy.
| | - Paolo Trost
- University of Bologna, Department of Pharmacy and Biotechnology, Via Irnerio 42, 40126 Bologna, Italy.
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Sun LX, Li N, Yuan Y, Wang Y, Lu BR. Reduced Carbon Dioxide by Overexpressing EPSPS Transgene in Arabidopsis and Rice: Implications in Carbon Neutrality through Genetically Engineered Plants. BIOLOGY 2023; 13:25. [PMID: 38248456 PMCID: PMC10813641 DOI: 10.3390/biology13010025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 12/27/2023] [Accepted: 12/30/2023] [Indexed: 01/23/2024]
Abstract
With the increasing challenges of climate change caused by global warming, the effective reduction of carbon dioxide (CO2) becomes an urgent environmental issue for the sustainable development of human society. Previous reports indicated increased biomass in genetically engineered (GE) Arabidopsis and rice overexpressing the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene, suggesting the possibility of consuming more carbon by GE plants. However, whether overexpressing the EPSPS gene in GE plants consumes more CO2 remains a question. To address this question, we measured expression of the EPSPS gene, intercellular CO2 concentration, photosynthetic ratios, and gene expression (RNA-seq and RT-qPCR) in GE (overexpression) and non-GE (normal expression) Arabidopsis and rice plants. Results showed substantially increased EPSPS expression accompanied with CO2 consumption in the GE Arabidopsis and rice plants. Furthermore, overexpressing the EPSPS gene affected carbon-fixation related biological pathways. We also confirmed significant upregulation of four key carbon-fixation associated genes, in addition to increased photosynthetic ratios, in all GE plants. Our finding of significantly enhanced carbon fixation in GE plants overexpressing the EPSPS transgene provides a novel strategy to reduce global CO2 for carbon neutrality by genetic engineering of plant species, in addition to increased plant production by enhanced photosynthesis.
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Affiliation(s)
- Li-Xue Sun
- Ministry of Education Key Laboratory for Biodiversity and Ecological Engineering, School of Life Sciences, Fudan University, Songhu Road 2005, Shanghai 200438, China; (L.-X.S.); (Y.Y.)
| | - Ning Li
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Songhu Road 2005, Shanghai 200438, China;
| | - Ye Yuan
- Ministry of Education Key Laboratory for Biodiversity and Ecological Engineering, School of Life Sciences, Fudan University, Songhu Road 2005, Shanghai 200438, China; (L.-X.S.); (Y.Y.)
| | - Ying Wang
- Ministry of Education Key Laboratory for Biodiversity and Ecological Engineering, School of Life Sciences, Fudan University, Songhu Road 2005, Shanghai 200438, China; (L.-X.S.); (Y.Y.)
| | - Bao-Rong Lu
- Ministry of Education Key Laboratory for Biodiversity and Ecological Engineering, School of Life Sciences, Fudan University, Songhu Road 2005, Shanghai 200438, China; (L.-X.S.); (Y.Y.)
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Suzuki Y, Shiina M, Takegahara-Tamakawa Y, Miyake C, Makino A. Overexpression of Chloroplast Triosephosphate Isomerase Marginally Improves Photosynthesis at Elevated CO2 Levels in Rice. PLANT & CELL PHYSIOLOGY 2022; 63:1500-1509. [PMID: 35921240 DOI: 10.1093/pcp/pcac115] [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: 04/25/2022] [Revised: 07/12/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
We recently suggested that chloroplast triosephosphate isomerase (cpTPI) has moderate control over the rate of CO2 assimilation (A) at elevated CO2 levels via the capacity for triose phosphate utilization (TPU) in rice (Oryza sativa L.) from its antisense-suppression study. In the present study, the effects of cpTPI overexpression on photosynthesis were examined in transgenic rice plants overexpressing the gene encoding cpTPI. The amounts of cpTPI protein in the two lines of transgenic plants were 4.8- and 12.1-folds higher than in wild-type plants, respectively. The magnitude of the increase approximately corresponded to the increase in transcript levels of cpTPI. A at CO2 levels of 100 and 120 Pa increased by 6-9% in the transgenic plants, whereas those at ambient and low CO2 levels were scarcely affected. Similar increases were observed for TPU capacity estimated from the CO2 response curves of A. These results indicate that the overexpression of cpTPI marginally improved photosynthesis at elevated CO2 levels via improvement in TPU capacity in rice. However, biomass production at a CO2 level of 120 Pa did not increase in transgenic plants, suggesting that the improvement in photosynthesis by cpTPI overexpression was not sufficient to improve biomass production in rice.
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Affiliation(s)
- Yuji Suzuki
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
| | - Mizuki Shiina
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
| | | | - Chikahiro Miyake
- Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501 Japan
| | - Amane Makino
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
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Xu X, Wang Z, Xu S, Xu M, He L, Zhang J, Luo Z, Xie X, Wu M, Yang J. Identifying loci controlling total starch content of leaf in Nicotiana tabacum through genome-wide association study. Funct Integr Genomics 2022; 22:537-552. [PMID: 35404023 DOI: 10.1007/s10142-022-00851-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 03/07/2022] [Accepted: 03/22/2022] [Indexed: 11/04/2022]
Abstract
Starch is an important primary metabolite in plants, which can provide bioenergy for fuel ethanol production. There are many studies focusing on starch metabolism in Arabidopsis, maize, and rice, but few reports have been made on the starch content of tobacco leaves. Hence, to identify the marker-trait associations and isolate the candidate genes related to starch content of tobacco leaf, the genome-wide association study (GWAS) was performed using a multiparent advanced generation intercross (MAGIC) population consisting of 276 accessions genotyped by a 430 K SNP array. In this study, we detected the leaf starch content of tobacco plants cultivated in two places (Zhucheng and Chenzhou), which showed a wide variation of starch content in the population. A total of 28 and 45 significant single-nucleotide polymorphism (SNP) loci associated with leaf starch content were identified by single-locus and multi-locus GWAS models, respectively, and the phenotypic variance explained by these loci varied from 1.80 to - 14.73%. Furthermore, among these quantitative trait loci (QTLs), one SNP, AX-106011713 located on chromosome 19, was detected repeatedly in multiple models and two environments, which was selected for linkage disequilibrium (LD) analysis to obtain the target candidate region. Through gene annotation, haplotype, and gene expression analysis, two candidate genes encoding E3 ubiquitin-protein ligase (Ntab0823160) and fructose-bisphosphate aldolase (Ntab0375050) were obtained. Results showed that the variety carrying the beneficial alleles of the two candidate genes had higher gene expression level and leaf starch content, suggesting the potential role of candidate genes in enhancing the level of tobacco leaf starch content. Furthermore, silencing of Ntab0823160 in tobacco leaves reduced the content of total starch to 39.41-69.75% of that in the wide type plants. Taken together, our results provide useful resources for further investigation of the starch metabolic pathway and are also beneficial for the creation of eco-friendly cultivars with increased accumulation of leaf starch content.
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Affiliation(s)
- Xin Xu
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Zhong Wang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Shixiao Xu
- Henan Agricultural University, Zhengzhou, 450002, China
| | - Min Xu
- Henan Tobacco Company of CNTC, Zhengzhou, 450018, China
| | - Lei He
- Henan Tobacco Company of CNTC, Zhengzhou, 450018, China
| | - Jianfeng Zhang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Zhaopeng Luo
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Xiaodong Xie
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Mingzhu Wu
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Jun Yang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China.
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Suzuki Y, Konno Y, Takegahara-Tamakawa Y, Miyake C, Makino A. Effects of suppression of chloroplast phosphoglycerate kinase on photosynthesis in rice. PHOTOSYNTHESIS RESEARCH 2022; 153:83-91. [PMID: 35635654 DOI: 10.1007/s11120-022-00923-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 05/03/2022] [Indexed: 06/15/2023]
Abstract
As chloroplast phosphoglycerate kinase (cpPGK) is one of the enzymes which has the highest capacity among the Calvin-Benson cycle enzymes, it has not been regarded as a determinant for photosynthetic capacity. However, it was reported that the rate of CO2 assimilation decreased under high irradiance and normal [CO2] levels in the Arabidopsis cpPGK-knockdown mutant, implying that cpPGK has a control over photosynthetic capacity at a normal [CO2] level. In the present study, the contribution of cpPGK to photosynthetic capacity was evaluated in transgenic rice plants with decreased amounts of cpPGK protein under high irradiance and various [CO2] levels. The gene encoding cpPGK was suppressed using RNA interference techniques. Two lines of transgenic plants, Pi3 and Pi5, in which the amount of cpPGK protein decreased to 21% and 76% of that in wild-type plants, respectively, were obtained. However, there was no substantial difference in the rates of CO2 assimilation between wild-type and transgenic plants. The rates of CO2 assimilation decreased only slightly at elevated [CO2] levels in the transgenic line Pi3 and did not differ between wild-type plants and the transgenic line Pi5, irrespective of [CO2] level. These results clearly indicate that cpPGK does not have a strong control over photosynthetic capacity at various [CO2] levels in rice.
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Affiliation(s)
- Yuji Suzuki
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550, Japan.
| | - Yume Konno
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550, Japan
| | | | - Chikahiro Miyake
- Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501, Japan
| | - Amane Makino
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572, Japan
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11
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Le Moigne T, Sarti E, Nourisson A, Zaffagnini M, Carbone A, Lemaire SD, Henri J. Crystal structure of chloroplast fructose-1,6-bisphosphate aldolase from the green alga Chlamydomonas reinhardtii. J Struct Biol 2022; 214:107873. [DOI: 10.1016/j.jsb.2022.107873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 11/25/2022]
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12
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Suzuki Y, Ishiyama K, Yoon DK, Takegahara-Tamakawa Y, Kondo E, Suganami M, Wada S, Miyake C, Makino A. Suppression of chloroplast triose phosphate isomerase evokes inorganic phosphate-limited photosynthesis in rice. PLANT PHYSIOLOGY 2022; 188:1550-1562. [PMID: 34893891 PMCID: PMC8896644 DOI: 10.1093/plphys/kiab576] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/14/2021] [Indexed: 05/12/2023]
Abstract
The availability of inorganic phosphate (Pi) for ATP synthesis is thought to limit photosynthesis at elevated [CO2] when Pi regeneration via sucrose or starch synthesis is limited. We report here another mechanism for the occurrence of Pi-limited photosynthesis caused by insufficient capacity of chloroplast triose phosphate isomerase (cpTPI). In cpTPI-antisense transgenic rice (Oryza sativa) plants with 55%-86% reductions in cpTPI content, CO2 sensitivity of the rate of CO2 assimilation (A) decreased and even reversed at elevated [CO2]. The pool sizes of the Calvin-Benson cycle metabolites from pentose phosphates to 3-phosphoglycerate increased at elevated [CO2], whereas those of ATP decreased. These phenomena are similar to the typical symptoms of Pi-limited photosynthesis, suggesting sufficient capacity of cpTPI is necessary to prevent the occurrence of Pi-limited photosynthesis and that cpTPI content moderately affects photosynthetic capacity at elevated [CO2]. As there tended to be slight variations in the amounts of total leaf-N depending on the genotypes, relationships between A and the amounts of cpTPI were examined after these parameters were expressed per unit amount of total leaf-N (A/N and cpTPI/N, respectively). A/N at elevated [CO2] decreased linearly as cpTPI/N decreased before A/N sharply decreased, owing to further decreases in cpTPI/N. Within this linear range, decreases in cpTPI/N by 80% led to decreases up to 27% in A/N at elevated [CO2]. Thus, cpTPI function is crucial for photosynthesis at elevated [CO2].
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Affiliation(s)
- Yuji Suzuki
- Faculty of Agriculture, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Keiki Ishiyama
- Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Dong-Kyung Yoon
- Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | | | - Eri Kondo
- Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Mao Suganami
- Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Shinya Wada
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Chikahiro Miyake
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Amane Makino
- Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
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13
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Effects of the Chloroplast Fructose-1,6-Bisphosphate Aldolase Gene on Growth and Low-Temperature Tolerance of Tomato. Int J Mol Sci 2022; 23:ijms23020728. [PMID: 35054921 PMCID: PMC8775715 DOI: 10.3390/ijms23020728] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/29/2021] [Accepted: 01/05/2022] [Indexed: 01/27/2023] Open
Abstract
Tomato (Solanum lycopersicum) is one of the most important greenhouse vegetables, with a large cultivated area across the world. However, in northern China, tomato plants often suffer from low-temperature stress in solar greenhouse cultivation, which affects plant growth and development and results in economic losses. We previously found that a chloroplast aldolase gene in tomato, SlFBA4, plays an important role in the Calvin-Benson cycle (CBC), and its expression level and activity can be significantly altered when subjected to low-temperature stress. To further study the function of SlFBA4 in the photosynthesis and chilling tolerance of tomato, we obtained transgenic tomato plants by the over-expression and RNA interference (RNAi) of SlFBA4. The over-expression of SlFBA4 led to higher fructose-1,6-bisphosphate aldolase activity, net photosynthetic rate (Pn) and activity of other enzymes in the CBC than wild type. Opposite results were observed in the RNAi lines. Moreover, an increase in thousand-seed weight, plant height, stem diameter and germination rate in optimal and sub-optimal temperatures was observed in the over-expression lines, while opposite effects were observed in the RNAi lines. Furthermore, over-expression of SlFBA4 increased Pn and enzyme activity and decreased malonaldehyde (MDA) content under chilling conditions. On the other hand, Pn and MDA content were more severely influenced by chilling stress in the RNAi lines. These results indicate that SlFBA4 plays an important role in tomato growth and tolerance to chilling stress.
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14
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Li C, Ma M, Zhang T, Feng P, Chen X, Liu Y, Brestic M, Galal TM, Al-Yasi HM, Yang X. Comparison of photosynthetic activity and heat tolerance between near isogenic lines of wheat with different photosynthetic rates. PLoS One 2021; 16:e0255896. [PMID: 34898627 PMCID: PMC8668138 DOI: 10.1371/journal.pone.0255896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 07/26/2021] [Indexed: 12/03/2022] Open
Abstract
Wheat (Triticum aestivum L.) is one of the most important crops in the world, but the yield and quality of wheat are highly susceptible to heat stress, especially during the grain-filling stage. Therefore, it is crucial to select high-yield and high-temperature-resistant varieties for food cultivation. There is a positive correlation between the yield and photosynthetic rate of wheat during the entire grain-filling stage, but few studies have shown that lines with high photosynthetic rates can maintain higher thermotolerance at the same time. In this study, two pairs of wheat near isogenic lines (NILs) with different photosynthetic rates were used for all experiments. Our results indicated that under heat stress, lines with a high photosynthetic rate could maintain the activities of photosystem II (PSII) and key Calvin cycle enzymes in addition to their higher photosynthetic rates. The protein levels of D1 and HSP70 were significantly increased in the highly photosynthetic lines, which contributed to maintaining high photosynthetic rates and ensuring the stability of the Calvin cycle under heat stress. Furthermore, we found that lines with a high photosynthetic rate could maintain high antioxidant enzyme activity to scavenge reactive oxygen species (ROS) and reduce ROS accumulation better than lines with a low photosynthetic rate under high-temperature stress. These findings suggest that lines with high photosynthetic rates can maintain a higher photosynthetic rate despite heat stress and are more thermotolerant than lines with low photosynthetic rates.
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Affiliation(s)
- Chongyang Li
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Mingyang Ma
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Tianpeng Zhang
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Pengwen Feng
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Xiao Chen
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Yang Liu
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Marian Brestic
- Department of Plant Physiology, Slovak University of Agriculture, Nitra, Slovak Republic
| | - Tarek M. Galal
- Department of Biology, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Hatim M. Al-Yasi
- Department of Biology, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Xinghong Yang
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- * E-mail: ,
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15
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Dang Z, Jia Y, Tian Y, Li J, Zhang Y, Huang L, Liang C, Lockhart PJ, Matthew C, Li FY. Transcriptome-Wide Gene Expression Plasticity in Stipa grandis in Response to Grazing Intensity Differences. Int J Mol Sci 2021; 22:ijms222111882. [PMID: 34769324 PMCID: PMC8611654 DOI: 10.3390/ijms222111882] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 01/15/2023] Open
Abstract
Organisms have evolved effective and distinct adaptive strategies to survive. Stipa grandis is a representative species for studying the grazing effect on typical steppe plants in the Inner Mongolia Plateau. Although phenotypic (morphological and physiological) variations in S. grandis in response to long-term grazing have been identified, the molecular mechanisms underlying adaptations and plastic responses remain largely unknown. Here, we performed a transcriptomic analysis to investigate changes in gene expression of S. grandis under four different grazing intensities. As a result, a total of 2357 differentially expressed genes (DEGs) were identified among the tested grazing intensities, suggesting long-term grazing resulted in gene expression plasticity that affected diverse biological processes and metabolic pathways in S. grandis. DEGs were identified in RNA-Seq and qRT-PCR analyses that indicated the modulation of the Calvin–Benson cycle and photorespiration metabolic pathways. The key gene expression profiles encoding various proteins (e.g., ribulose-1,5-bisphosphate carboxylase/oxygenase, fructose-1,6-bisphosphate aldolase, glycolate oxidase, etc.) involved in these pathways suggest that they may synergistically respond to grazing to increase the resilience and stress tolerance of S. grandis. Our findings provide scientific clues for improving grassland use and protection and identifying important questions to address in future transcriptome studies.
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Affiliation(s)
- Zhenhua Dang
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; (Y.J.); (J.L.); (Y.Z.); (L.H.); (C.L.); (F.Y.L.)
- Correspondence: ; Tel.: +86-1514-802-6396
| | - Yuanyuan Jia
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; (Y.J.); (J.L.); (Y.Z.); (L.H.); (C.L.); (F.Y.L.)
| | - Yunyun Tian
- Ministry of Education Key Laboratory of Herbage & Endemic Crop Biotechnology, School of Life Sciences, Inner Mongolia University, Hohhot 010021, China;
| | - Jiabin Li
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; (Y.J.); (J.L.); (Y.Z.); (L.H.); (C.L.); (F.Y.L.)
| | - Yanan Zhang
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; (Y.J.); (J.L.); (Y.Z.); (L.H.); (C.L.); (F.Y.L.)
| | - Lei Huang
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; (Y.J.); (J.L.); (Y.Z.); (L.H.); (C.L.); (F.Y.L.)
| | - Cunzhu Liang
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; (Y.J.); (J.L.); (Y.Z.); (L.H.); (C.L.); (F.Y.L.)
| | - Peter J. Lockhart
- School of Fundamental Sciences, College of Sciences, Massey University, Palmerston North 4442, New Zealand;
| | - Cory Matthew
- School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand;
| | - Frank Yonghong Li
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China; (Y.J.); (J.L.); (Y.Z.); (L.H.); (C.L.); (F.Y.L.)
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16
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Stitt M, Luca Borghi G, Arrivault S. Targeted metabolite profiling as a top-down approach to uncover interspecies diversity and identify key conserved operational features in the Calvin-Benson cycle. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:5961-5986. [PMID: 34473300 PMCID: PMC8411860 DOI: 10.1093/jxb/erab291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 06/21/2021] [Indexed: 05/02/2023]
Abstract
Improving photosynthesis is a promising avenue to increase crop yield. This will be aided by better understanding of natural variance in photosynthesis. Profiling of Calvin-Benson cycle (CBC) metabolites provides a top-down strategy to uncover interspecies diversity in CBC operation. In a study of four C4 and five C3 species, principal components analysis separated C4 species from C3 species and also separated different C4 species. These separations were driven by metabolites that reflect known species differences in their biochemistry and pathways. Unexpectedly, there was also considerable diversity between the C3 species. Falling atmospheric CO2 and changing temperature, nitrogen, and water availability have driven evolution of C4 photosynthesis in multiple lineages. We propose that analogous selective pressures drove lineage-dependent evolution of the CBC in C3 species. Examples of species-dependent variation include differences in the balance between the CBC and the light reactions, and in the balance between regulated steps in the CBC. Metabolite profiles also reveal conserved features including inactivation of enzymes in low irradiance, and maintenance of CBC metabolites at relatively high levels in the absence of net CO2 fixation. These features may be important for photosynthetic efficiency in low light, fluctuating irradiance, and when stomata close due to low water availability.
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Affiliation(s)
- Mark Stitt
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany
| | - Gian Luca Borghi
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany
| | - Stéphanie Arrivault
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany
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17
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Li ZQ, Zhang Y, Li H, Su TT, Liu CG, Han ZC, Wang AY, Zhu JB. Genome-Wide Characterization and Expression Analysis Provide Basis to the Biological Function of Cotton FBA Genes. FRONTIERS IN PLANT SCIENCE 2021; 12:696698. [PMID: 34490001 PMCID: PMC8416763 DOI: 10.3389/fpls.2021.696698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Fructose-1,6-biphosphate aldolase (FBA) is a multifunctional enzyme in plants, which participates in the process of Calvin-Benson cycle, glycolysis and gluconeogenesis. Despite the importance of FBA genes in regulating plant growth, development and abiotic stress responses, little is known about their roles in cotton. In the present study, we performed a genome-wide identification and characterization of FBAs in Gossypium hirsutum. Totally seventeen GhFBA genes were identified. According to the analysis of functional domain, phylogenetic relationship, and gene structure, GhFBA genes were classified into two subgroups. Furthermore, nine GhFBAs were predicted to be in chloroplast and eight were located in cytoplasm. Moreover, the promoter prediction showed a variety of abiotic stresses and phytohormone related cis-acting elements exist in the 2k up-stream region of GhFBA. And the evolutionary characteristics of cotton FBA genes were clearly presented by synteny analysis. Moreover, the results of transcriptome and qRT-PCR analysis showed that the expression of GhFBAs were related to the tissue distribution, and further analysis suggested that GhFBAs could respond to various abiotic stress and phytohormonal treatments. Overall, our systematic analysis of GhFBA genes would not only provide a basis for the understanding of the evolution of GhFBAs, but also found a foundation for the further function analysis of GhFBAs to improve cotton yield and environmental adaptability.
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18
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Carrera DÁ, George GM, Fischer-Stettler M, Galbier F, Eicke S, Truernit E, Streb S, Zeeman SC. Distinct plastid fructose bisphosphate aldolases function in photosynthetic and non-photosynthetic metabolism in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:3739-3755. [PMID: 33684221 PMCID: PMC8628874 DOI: 10.1093/jxb/erab099] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 03/01/2021] [Indexed: 05/31/2023]
Abstract
Plastid metabolism is critical in both photoautotrophic and heterotrophic plant cells. In chloroplasts, fructose-1,6-bisphosphate aldolase (FBA) catalyses the formation of both fructose 1,6-bisphosphate and sedoheptulose 1,7-bisphosphate within the Calvin-Benson cycle. Three Arabidopsis genes, AtFBA1-AtFBA3, encode plastidial isoforms of FBA, but the contribution of each isoform is unknown. Phylogenetic analysis indicates that FBA1 and FBA2 derive from a recently duplicated gene, while FBA3 is a more ancient paralog. fba1 mutants are phenotypically indistinguishable from the wild type, while both fba2 and fba3 have reduced growth. We show that FBA2 is the major isoform in leaves, contributing most of the measurable activity. Partial redundancy with FBA1 allows both single mutants to survive, but combining both mutations is lethal, indicating a block of photoautotrophy. In contrast, FBA3 is expressed predominantly in heterotrophic tissues, especially the leaf and root vasculature, but not in the leaf mesophyll. We show that the loss of FBA3 affects plastidial glycolytic metabolism of the root, potentially limiting the biosynthesis of essential compounds such as amino acids. However, grafting experiments suggest that fba3 is dysfunctional in leaf phloem transport, and we suggest that a block in photoassimilate export from leaves causes the buildup of high carbohydrate concentrations and retarded growth.
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Affiliation(s)
| | - Gavin M George
- Department of Biology, ETH Zurich, 8092
Zurich, Switzerland
| | | | | | - Simona Eicke
- Department of Biology, ETH Zurich, 8092
Zurich, Switzerland
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19
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Suzuki Y, Ishiyama K, Sugawara M, Suzuki Y, Kondo E, Takegahara-Tamakawa Y, Yoon DK, Suganami M, Wada S, Miyake C, Makino A. Overproduction of Chloroplast Glyceraldehyde-3-Phosphate Dehydrogenase Improves Photosynthesis Slightly under Elevated [CO2] Conditions in Rice. PLANT & CELL PHYSIOLOGY 2021; 62:156-165. [PMID: 33289530 DOI: 10.1093/pcp/pcaa149] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
Chloroplast glyceraldehyde-3-phosphate dehydrogenase (GAPDH) limits the regeneration of ribulose 1,5-bisphosphate (RuBP) in the Calvin-Benson cycle. However, it does not always limit the rate of CO2 assimilation. In the present study, the effects of overproduction of GAPDH on the rate of CO2 assimilation under elevated [CO2] conditions, where the capacity for RuBP regeneration limits photosynthesis, were examined in transgenic rice (Oryza sativa). GAPDH activity was increased to 3.2- and 4.5-fold of the wild-type levels by co-overexpression of the GAPDH genes, GAPA and GAPB, respectively. In the transgenic rice plants, the rate of CO2 assimilation under elevated [CO2] conditions increased by approximately 10%, whereas that under normal and low [CO2] conditions was not affected. These results indicate that overproduction of GAPDH is effective in improving photosynthesis under elevated [CO2] conditions, although its magnitude is relatively small. By contrast, biomass production of the transgenic rice plants was not greater than that of wild-type plants under elevated [CO2] conditions, although starch content tended to increase marginally.
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Affiliation(s)
- Yuji Suzuki
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
| | - Keiki Ishiyama
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
| | - Misaki Sugawara
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
| | - Yuka Suzuki
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
| | - Eri Kondo
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
| | | | - Dong-Kyung Yoon
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
| | - Mao Suganami
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
| | - Shinya Wada
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
- Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501 Japan
| | - Chikahiro Miyake
- Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501 Japan
| | - Amane Makino
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
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20
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Mu J, Fu Y, Liu B, Zhang Y, Wang A, Li Y, Zhu J. SiFBA5, a cold-responsive factor from Saussurea involucrata promotes cold resilience and biomass increase in transgenic tomato plants under cold stress. BMC PLANT BIOLOGY 2021; 21:75. [PMID: 33541285 PMCID: PMC7863501 DOI: 10.1186/s12870-021-02851-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 01/24/2021] [Indexed: 05/13/2023]
Abstract
BACKGROUND Saussurea involucrata survives in extreme arctic conditions and is very cold-resistant. This species grows in rocky, mountainous areas with elevations of 2400-4100 m, which are snow-covered year-round and are subject to freezing temperatures. S. involucrata's ability to survive in an extreme low-temperature environment suggests that it has particularly high photosynthetic efficiency, providing a magnificent model, and rich gene pool, for the analysis of plant cold stress response. Fructose-1, 6-bisphosphate aldolase (FBA) is a key enzyme in the photosynthesis process and also mediates the conversion of fructose 1, 6-bisphosphate (FBP) into dihydroxyacetone phosphate (DHAP) and glycerol triphosphate (GAP) during glycolysis and gluconeogenesis. The molecular mechanisms underlying S. involucrata's cold tolerance are still unclear; therefore, our work aims to investigate the role of FBA in plant cold-stress response. RESULTS In this study, we identified a cold-responsive gene, SiFBA5, based on a preliminary low-temperature, genome-wide transcriptional profiling of S. involucrata. Expression analysis indicated that cold temperatures rapidly induced transcriptional expression of SiFBA5, suggesting that SiFBA5 participates in the initial stress response. Subcellular localization analysis revealed that SiFBA5 is localized to the chloroplast. Transgenic tomato plants that overexpressed SiFBA5 were generated using a CaMV 35S promoter. Phenotypic observation suggested that the transgenic plants displayed increased cold tolerance and photosynthetic efficiency in comparison with wild-type plants. CONCLUSION Cold stress has a detrimental impact on crop yield. Our results demonstrated that SiFBA5 positively regulates plant response to cold stress, which is of great significance for increasing crop yield under cold stress conditions.
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Affiliation(s)
- Jianqiang Mu
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi, Xinjiang, 832003, China
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Yajuan Fu
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Bucang Liu
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi, Xinjiang, 832003, China
| | - Yao Zhang
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi, Xinjiang, 832003, China
| | - Aiying Wang
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi, Xinjiang, 832003, China
| | - Yuxia Li
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi, Xinjiang, 832003, China
| | - Jianbo Zhu
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi, Xinjiang, 832003, China.
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21
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Li C, Li N, Huang R, Chen C, Guo J, Yang X, Zhang X, Sun C, Deng X, Wang P. A single nucleotide substitution at the 3'-end of SBPase gene involved in Calvin cycle severely affects plant growth and grain yield in rice. BMC PLANT BIOLOGY 2020; 20:345. [PMID: 32698774 PMCID: PMC7374905 DOI: 10.1186/s12870-020-02541-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Calvin cycle plays a crucial role in carbon fixation which provides the precursors of organic macromolecules for plant growth and development. Currently, no gene involved in Calvin cycle has been identified in monocotyledonous plants through mutant or/and map-based cloning approach. RESULTS Here, we isolated a low-tillering mutant, c6635, in rice (Oryza sativa). The mutant displayed light green leaves and intensely declined pigment contents and photosynthetic capacity at early growth stage. Moreover, its individual plant showed a much smaller size, and most individuals produced only two tillers. At mature stage, its productive panicles, grain number and seed setting rate were significantly decreased, which lead to a sharp reduction of the grain yield. We confirmed that a single nucleotide mutation in LOC_Os04g16680 gene encoding sedoheptulose 1,7-bisphosphatase (SBPase) involved in Calvin cycle was responsible for the mutant phenotype of c6635 through map-based cloning, MutMap analysis and complementation experiments. Sequence analysis suggested that the point mutation caused an amino acid change from Gly-364 to Asp at the C-terminal of SBPase. In addition, OsSBPase gene was mainly expressed in leaf, and the encoded protein was located in chloroplast. The mutation of OsSBPase could significantly affect expression levels of some key genes involved in Calvin cycle. CONCLUSIONS We successfully identified a SBPase gene in monocotyledonous plants. Meanwhile, we demonstrated that a single nucleotide substitution at the 3'-end of this gene severely affects plant growth and grain yield, implying that the Gly-364 at the C-terminal of SBPase could play an important role in SBPase function in rice.
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Affiliation(s)
- Chun Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Na Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Rui Huang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Congping Chen
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Jia Guo
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Xiaorong Yang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Xiangyu Zhang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Changhui Sun
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Xiaojian Deng
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China.
| | - Pingrong Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China.
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Li YT, Li Y, Li YN, Liang Y, Sun Q, Li G, Liu P, Zhang ZS, Gao HY. Dynamic light caused less photosynthetic suppression, rather than more, under nitrogen deficit conditions than under sufficient nitrogen supply conditions in soybean. BMC PLANT BIOLOGY 2020; 20:339. [PMID: 32680459 PMCID: PMC7368695 DOI: 10.1186/s12870-020-02516-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 06/23/2020] [Indexed: 05/23/2023]
Abstract
BACKGROUND Plants are always exposed to dynamic light. The photosynthetic light use efficiency of leaves is lower in dynamic light than in uniform irradiance. Research on the influence of environmental factors on dynamic photosynthesis is very limited. Nitrogen is critical for plants, especially for photosynthesis. Low nitrogen (LN) decreases ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and thus limits photosynthesis. The decrease in Rubisco also delays photosynthetic induction in LN leaves; therefore, we hypothesized that the difference of photosynthetic CO2 fixation between uniform and dynamic light will be greater in LN leaves compared to leaves with sufficient nitrogen supply. RESULTS To test this hypothesis, soybean plants were grown under low or high nitrogen (HN), and the photosynthetic gas exchange, enzyme activity and protein amount in leaves were measured under uniform and dynamic light. Unexpectedly, dynamic light caused less photosynthetic suppression, rather than more, in LN leaves than in HN leaves. The underlying mechanism was also clarified. Short low-light (LL) intervals did not affect Rubisco activity but clearly deactivated fructose-1,6-bisphosphatase (FBPase) and sedoheptulose-1,7-bisphosphatase (SBPase), indicating that photosynthetic induction after a LL interval depends on the reactivation of FBPase and SBPase rather than Rubisco. In LN leaves, the amount of Rubisco decreased more than FBPase and SBPase, so FBPase and SBPase were present in relative excess. A lower fraction of FBPase and SBPase needs to be activated in LN leaves for photosynthesis recovery during the high-light phase of dynamic light. Therefore, photosynthetic recovery is faster in LN leaves than in HN leaves, which relieves the photosynthetic suppression caused by dynamic light in LN leaves. CONCLUSIONS Contrary to our expectations, dynamic light caused less photosynthetic suppression, rather than more, in LN leaves than in HN leaves of soybean. This is the first report of a stress condition alleviating the photosynthetic suppression caused by dynamic light.
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Affiliation(s)
- Yu-Ting Li
- State Key Lab of Crop Biology, Tai'an, Shandong Province, China
- College of Agronomy, Shandong Agricultural University, Tai'an, Shandong Province, China
- College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong Province, China
| | - Ying Li
- State Key Lab of Crop Biology, Tai'an, Shandong Province, China
- College of Agronomy, Shandong Agricultural University, Tai'an, Shandong Province, China
| | - Yue-Nan Li
- State Key Lab of Crop Biology, Tai'an, Shandong Province, China
- College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong Province, China
| | - Ying Liang
- State Key Lab of Crop Biology, Tai'an, Shandong Province, China
- College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong Province, China
| | - Qiang Sun
- Tai'an Testing Center For Food And Drug Control, Tai'an, Shandong Province, China
| | - Geng Li
- State Key Lab of Crop Biology, Tai'an, Shandong Province, China.
- College of Agronomy, Shandong Agricultural University, Tai'an, Shandong Province, China.
| | - Peng Liu
- State Key Lab of Crop Biology, Tai'an, Shandong Province, China.
- College of Agronomy, Shandong Agricultural University, Tai'an, Shandong Province, China.
| | - Zi-Shan Zhang
- State Key Lab of Crop Biology, Tai'an, Shandong Province, China.
- College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong Province, China.
| | - Hui-Yuan Gao
- State Key Lab of Crop Biology, Tai'an, Shandong Province, China
- College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong Province, China
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23
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Jammer A, Albacete A, Schulz B, Koch W, Weltmeier F, van der Graaff E, Pfeifhofer HW, Roitsch TG. Early-stage sugar beet taproot development is characterized by three distinct physiological phases. PLANT DIRECT 2020; 4:e00221. [PMID: 32766510 PMCID: PMC7395582 DOI: 10.1002/pld3.221] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 02/04/2020] [Accepted: 04/13/2020] [Indexed: 05/21/2023]
Abstract
Despite the agronomic importance of sugar beet (Beta vulgaris L.), the early-stage development of its taproot has only been poorly investigated. Thus, the mechanisms that determine growth and sugar accumulation in sugar beet are largely unknown. In the presented study, a physiological characterization of early-stage sugar beet taproot development was conducted. Activities were analyzed for fourteen key enzymes of carbohydrate metabolism in developing taproots over the first 80 days after sowing. In addition, we performed in situ localizations of selected carbohydrate-metabolic enzyme activities, anatomical investigations, and quantifications of soluble carbohydrates, hexose phosphates, and phytohormones. Based on the accumulation dynamics of biomass and sucrose, as well as on anatomical parameters, the early phase of taproot development could be subdivided into three stages-prestorage, transition, secondary growth and sucrose accumulation stage-each of which was characterized by distinct metabolic and phytohormonal signatures. The enzyme activity signatures corresponding to these stages were also shown to be robustly reproducible in experiments conducted in two additional locations. The results from this physiological phenotyping approach contribute to the identification of the key regulators of sugar beet taproot development and open up new perspectives for sugar beet crop improvement concerning both physiological marker-based breeding and biotechnological approaches.
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Affiliation(s)
- Alexandra Jammer
- Institute of BiologyUniversity of GrazGrazAustria
- Department of Crop SciencesUFT TullnUniversity of Natural Resources and Life Sciences (BOKU)TullnAustria
| | - Alfonso Albacete
- Institute of BiologyUniversity of GrazGrazAustria
- Present address:
Department of Plant Production and AgrotechnologyInstitute for Agri‐Food Research and Development of Murcia (IMIDA)MurciaSpain
| | | | | | | | - Eric van der Graaff
- Institute of BiologyUniversity of GrazGrazAustria
- Department of Plant and Environmental SciencesCopenhagen Plant Science CentreUniversity of CopenhagenTaastrupDenmark
- Present address:
Koppert Cress B.V.MonsterThe Netherlands
| | | | - Thomas G. Roitsch
- Department of Crop SciencesUFT TullnUniversity of Natural Resources and Life Sciences (BOKU)TullnAustria
- Department of Plant and Environmental SciencesCopenhagen Plant Science CentreUniversity of CopenhagenTaastrupDenmark
- Department of Adaptive BiotechnologiesGlobal Change Research Institute CASBrnoCzech Republic
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24
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Barnaby JY, Huggins TD, Lee H, McClung AM, Pinson SRM, Oh M, Bauchan GR, Tarpley L, Lee K, Kim MS, Edwards JD. Vis/NIR hyperspectral imaging distinguishes sub-population, production environment, and physicochemical grain properties in rice. Sci Rep 2020; 10:9284. [PMID: 32518379 PMCID: PMC7283329 DOI: 10.1038/s41598-020-65999-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 01/30/2020] [Indexed: 01/01/2023] Open
Abstract
Rice grain quality is a multifaceted quantitative trait that impacts crop value and is influenced by multiple genetic and environmental factors. Chemical, physical, and visual analyses are the standard methods for measuring grain quality. In this study, we evaluated high-throughput hyperspectral imaging for quantification of rice grain quality and classification of grain samples by genetic sub-population and production environment. Whole grain rice samples from the USDA mini-core collection grown in multiple locations were evaluated using hyperspectral imaging and compared with results from standard phenotyping. Loci associated with hyperspectral values were mapped in the mini-core with 3.2 million SNPs in a genome-wide association study (GWAS). Our results show that visible and near infra-red (Vis/NIR) spectroscopy can classify rice according to sub-population and production environment based on differences in physicochemical grain properties. The 702–900 nm range of the NIR spectrum was associated with the chalky grain trait. GWAS revealed that grain chalk and hyperspectral variation share genomic regions containing several plausible candidate genes for grain chalkiness. Hyperspectral quantification of grain chalk was validated using a segregating bi-parental mapping population. These results indicate that Vis/NIR can be used for non-destructive high throughput phenotyping of grain chalk and potentially other grain quality properties.
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Affiliation(s)
- Jinyoung Y Barnaby
- Dale Bumpers National Rice Research Center, United States Department of Agriculture - Agricultural Research Service, Stuttgart, AR, 72160, USA
| | - Trevis D Huggins
- Dale Bumpers National Rice Research Center, United States Department of Agriculture - Agricultural Research Service, Stuttgart, AR, 72160, USA
| | - Hoonsoo Lee
- Environmental Microbial and Food Safety Laboratory, United States Department of Agriculture - Agricultural Research Service, Beltsville, MD, 20705, USA.,Department of Biosystems Engineering, Chungbuk National University, Cheongju, 28644, Republic of Korea
| | - Anna M McClung
- Dale Bumpers National Rice Research Center, United States Department of Agriculture - Agricultural Research Service, Stuttgart, AR, 72160, USA
| | - Shannon R M Pinson
- Dale Bumpers National Rice Research Center, United States Department of Agriculture - Agricultural Research Service, Stuttgart, AR, 72160, USA
| | - Mirae Oh
- Environmental Microbial and Food Safety Laboratory, United States Department of Agriculture - Agricultural Research Service, Beltsville, MD, 20705, USA.,Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan, 31000, Republic of Korea
| | - Gary R Bauchan
- Electron & Confocal Microscopy Unit, United States Department of Agriculture - Agricultural Research Service, Beltsville, MD, 20705, USA
| | - Lee Tarpley
- Texas A&M AgriLife Research Center, Texas A&M University System, Beaumont, TX, 77713, USA
| | - Kangjin Lee
- National Institute of Horticultural and Herbal Sciences, Rural Development Administration, Haman, 52054, Republic of Korea
| | - Moon S Kim
- Environmental Microbial and Food Safety Laboratory, United States Department of Agriculture - Agricultural Research Service, Beltsville, MD, 20705, USA
| | - Jeremy D Edwards
- Dale Bumpers National Rice Research Center, United States Department of Agriculture - Agricultural Research Service, Stuttgart, AR, 72160, USA.
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25
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Lee BS, Koo KM, Ryu J, Hong MJ, Kim SH, Kwon SJ, Kim JB, Choi JI, Ahn JW. Overexpression of fructose-1,6-bisphosphate aldolase 1 enhances accumulation of fatty acids in Chlamydomonas reinhardtii. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101825] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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26
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Bizzarri M, Delledonne M, Ferrarini A, Tononi P, Zago E, Vittori D, Damiani F, Paolocci F. Whole-Transcriptome Analysis Unveils the Synchronized Activities of Genes for Fructans in Developing Tubers of the Jerusalem Artichoke. FRONTIERS IN PLANT SCIENCE 2020; 11:101. [PMID: 32153609 PMCID: PMC7046554 DOI: 10.3389/fpls.2020.00101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 01/23/2020] [Indexed: 05/04/2023]
Abstract
Helianthus tuberosus L., known as the Jerusalem artichoke, is a hexaploid plant species, adapted to low-nutrient soils, that accumulates high levels of inulin in its tubers. Inulin is a fructose-based polysaccharide used either as dietary fiber or for the production of bioethanol. Key enzymes involved in inulin biosynthesis are well known. However, the gene networks underpinning tuber development and inulin accumulation in H. tuberous remain elusive. To fill this gap, we selected 6,365 expressed sequence tags (ESTs) from an H. tuberosus library to set up a microarray platform and record their expression across three tuber developmental stages, when rhizomes start enlarging (T0), at maximum tuber elongation rate (T3), and at tuber physiological maturity (Tm), in "VR" and "K8-HS142"clones. The former was selected as an early tuberizing and the latter as a late-tuberizing clone. We quantified inulin and starch levels, and qRT-PCR confirmed the expression of critical genes accounting for inulin biosynthesis. The microarray analysis revealed that the differences in morphological and physiological traits between tubers of the two clones are genetically determined since T0 and that is relatively low the number of differentially expressed ESTs across the stages shared between the clones (93). The expression of ESTs for sucrose:sucrose 1-fructosyltransferase (1-SST) and fructan:fructan 1-fructosyltransferase (1-FFT), the two critical genes for fructans polymerization, resulted to be temporarily synchronized and mirror the progress of inulin accumulation and stretching. The expression of ESTs for starch biosynthesis was insignificant throughout the developmental stages of the clones in line with the negligible level of starch into their mature tubers, where inulin was the dominant polysaccharide. Overall, our study disclosed candidate genes underpinning the development and storage of carbohydrates in the tubers of two H. tuberosus clones. A model according to which the steady-state levels of 1-SST and 1-FFT transcripts are developmentally controlled and might represent a limiting factor for inulin accumulation has been provided. Our finding may have significant repercussions for breeding clones with improved levels of inulin for food and chemical industry.
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Affiliation(s)
- Marco Bizzarri
- Department of Science and Technology for Agriculture, Forests, Nature and Energy (DAFNE), University of Tuscia, Viterbo, Italy
| | | | | | - Paola Tononi
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Elisa Zago
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Doriano Vittori
- Department of Science and Technology for Agriculture, Forests, Nature and Energy (DAFNE), University of Tuscia, Viterbo, Italy
| | - Francesco Damiani
- Institute of Bioscience and Bioresources (IBBR), National Research Council (CNR), Perugia, Italy
| | - Francesco Paolocci
- Institute of Bioscience and Bioresources (IBBR), National Research Council (CNR), Perugia, Italy
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27
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Simkin AJ. Genetic Engineering for Global Food Security: Photosynthesis and Biofortification. PLANTS (BASEL, SWITZERLAND) 2019; 8:E586. [PMID: 31835394 PMCID: PMC6963231 DOI: 10.3390/plants8120586] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 12/18/2022]
Abstract
Increasing demands for food and resources are challenging existing markets, driving a need to continually investigate and establish crop varieties with improved yields and health benefits. By the later part of the century, current estimates indicate that a >50% increase in the yield of most of the important food crops including wheat, rice and barley will be needed to maintain food supplies and improve nutritional quality to tackle what has become known as 'hidden hunger'. Improving the nutritional quality of crops has become a target for providing the micronutrients required in remote communities where dietary variation is often limited. A number of methods to achieve this have been investigated over recent years, from improving photosynthesis through genetic engineering, to breeding new higher yielding varieties. Recent research has shown that growing plants under elevated [CO2] can lead to an increase in Vitamin C due to changes in gene expression, demonstrating one potential route for plant biofortification. In this review, we discuss the current research being undertaken to improve photosynthesis and biofortify key crops to secure future food supplies and the potential links between improved photosynthesis and nutritional quality.
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Affiliation(s)
- Andrew John Simkin
- Genetics, Genomics and Breeding, NIAB EMR, East Malling, Kent, ME19 6BJ, UK
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28
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Zhao W, Liu H, Zhang L, Hu Z, Liu J, Hua W, Xu S, Liu J. Genome-Wide Identification and Characterization of FBA Gene Family in Polyploid Crop Brassica napus. Int J Mol Sci 2019; 20:E5749. [PMID: 31731804 PMCID: PMC6888112 DOI: 10.3390/ijms20225749] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 11/14/2019] [Accepted: 11/14/2019] [Indexed: 12/31/2022] Open
Abstract
Fructose-1,6-bisphosphate aldolase (FBA) is a versatile metabolic enzyme involved in multiple important processes of glycolysis, gluconeogenesis, and Calvin cycle. Despite its significance in plant biology, the identity of this gene family in oil crops is lacking. Here, we performed genome-wide identification and characterization of FBAs in an allotetraploid species, oilseed rape Brassica napus. Twenty-two BnaFBA genes were identified and divided into two groups based on integrative analyses of functional domains, phylogenetic relationships, and gene structures. Twelve and ten B. napus FBAs (BnaFBAs) were predicted to be localized in the chloroplast and cytoplasm, respectively. Notably, synteny analysis revealed that Brassica-specific triplication contributed to the expansion of the BnaFBA gene family during the evolution of B. napus. Various cis-acting regulatory elements pertinent to abiotic and biotic stresses, as well as phytohormone responses, were detected. Intriguingly, each of the BnaFBA genes exhibited distinct sequence polymorphisms. Among them, six contained signatures of selection, likely having experienced breeding selection during adaptation and domestication. Importantly, BnaFBAs showed diverse expression patterns at different developmental stages and were preferentially highly expressed in photosynthetic tissues. Our data thus provided the foundation for further elucidating the functional roles of individual BnaFBA and also potential targets for engineering to improve photosynthetic productivity in B. napus.
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Affiliation(s)
- Wei Zhao
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China; (W.Z.); (H.L.); (L.Z.); (Z.H.); (J.L.); (W.H.)
| | - Hongfang Liu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China; (W.Z.); (H.L.); (L.Z.); (Z.H.); (J.L.); (W.H.)
| | - Liang Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China; (W.Z.); (H.L.); (L.Z.); (Z.H.); (J.L.); (W.H.)
| | - Zhiyong Hu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China; (W.Z.); (H.L.); (L.Z.); (Z.H.); (J.L.); (W.H.)
| | - Jun Liu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China; (W.Z.); (H.L.); (L.Z.); (Z.H.); (J.L.); (W.H.)
| | - Wei Hua
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China; (W.Z.); (H.L.); (L.Z.); (Z.H.); (J.L.); (W.H.)
| | - Shouming Xu
- Henan key laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Jing Liu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China; (W.Z.); (H.L.); (L.Z.); (Z.H.); (J.L.); (W.H.)
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29
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Borghi GL, Moraes TA, Günther M, Feil R, Mengin V, Lunn JE, Stitt M, Arrivault S. Relationship between irradiance and levels of Calvin-Benson cycle and other intermediates in the model eudicot Arabidopsis and the model monocot rice. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:5809-5825. [PMID: 31353406 PMCID: PMC6812724 DOI: 10.1093/jxb/erz346] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 07/22/2019] [Indexed: 05/02/2023]
Abstract
Metabolite profiles provide a top-down overview of the balance between the reactions in a pathway. We compared Calvin-Benson cycle (CBC) intermediate profiles in different conditions in Arabidopsis (Arabidopsis thaliana) and rice (Oryza sativa) to learn which features of CBC regulation differ and which are shared between these model eudicot and monocot C3 species. Principal component analysis revealed that CBC intermediate profiles follow different trajectories in Arabidopsis and rice as irradiance increases. The balance between subprocesses or reactions differed, with 3-phosphoglycerate reduction being favoured in Arabidopsis and ribulose 1,5-bisphosphate regeneration in rice, and sedoheptulose-1,7-bisphosphatase being favoured in Arabidopsis compared with fructose-1,6-bisphosphatase in rice. Photosynthesis rates rose in parallel with ribulose 1,5-bisphosphate levels in Arabidopsis, but not in rice. Nevertheless, some responses were shared between Arabidopsis and rice. Fructose 1,6-bisphosphate and sedoheptulose-1,7-bisphosphate were high or peaked at very low irradiance in both species. Incomplete activation of fructose-1,6-bisphosphatase and sedoheptulose-1,7-bisphosphatase may prevent wasteful futile cycles in low irradiance. End-product synthesis is inhibited and high levels of CBC intermediates are maintained in low light or in low CO2 in both species. This may improve photosynthetic efficiency in fluctuating irradiance, and facilitate rapid CBC flux to support photorespiration and energy dissipation in low CO2.
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Affiliation(s)
- Gian Luca Borghi
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | | | - Manuela Günther
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Regina Feil
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Virginie Mengin
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - John E Lunn
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Mark Stitt
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Stéphanie Arrivault
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
- Correspondence:
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30
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Patipong T, Ngoennet S, Honda M, Hibino T, Waditee-Sirisattha R, Kageyama H. A class I fructose-1,6-bisphosphate aldolase is associated with salt stress tolerance in a halotolerant cyanobacterium Halothece sp. PCC 7418. Arch Biochem Biophys 2019; 672:108059. [PMID: 31356779 DOI: 10.1016/j.abb.2019.07.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 10/26/2022]
Abstract
Fructose-1,6-bisphosphate aldolase (FBA) is a key metabolic enzyme, which is involved in glycolysis, gluconeogenesis and the Calvin cycle. The distinct physiological roles of FBAs in various organisms have been reported; however, in cyanobacteria, the functional characterization of FBAs and investigation of the intracellular dynamics of FBAs largely remains unknown. Here, we utilized a two-step chromatographic technique to identify a class I FBA (CI-FBA), which we named H2846. H2846 was induced by salt stress in the halotolerant cyanobacterium Halothece sp. PCC 7418 (hereafter referred to as Halothece 7418). Phylogenetic analysis showed that H2846-like CI-FBAs existed mainly in cyanobacterial species that inhabit hypersaline environments. Subcellular fractionation revealed that H2846 localized in the cytosolic and periplasmic spaces and size-exclusion chromatography suggested that H2846 formed a homohexamer. The CI-FBA activity of recombinant H2846-mediated cleavage of fructose bisphosphate (FBP) was characterized using a coupled enzymatic assay. This analysis allowed us to determine the Km and Vmax values of recombinant H2846, which were then compared to previously reported Km and Vmax values of several FBAs. Our data suggested that H2846 was likely responsible for the salt stress-induced CI-FBA activity from the total soluble protein extracts derived from Halothece 7418 cells. Moreover, heterologous expression of H2846 but not H2847, a class II FBA (CII-FBA), conferred salt stress tolerance to the salt-sensitive freshwater cyanobacterium, Synechococcus elongatus PCC 7942, which only contains the CII-FBA, S1443. S. elongatus PCC 7942 with a S1443 gene deletion was complemented by H2847 expression, but was not complemented by expression of H2846. Taken together, these results indicate the functional differences between two distinct sets of FBAs in cyanobacteria. H2846 is an active CI-FBA that contributes to the mechanism of salt stress tolerance in Halothece 7418.
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Affiliation(s)
- Tanutcha Patipong
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand; Graduate School of Environmental and Human Sciences, Meijo University, Nagoya, Aichi, 468-8502, Japan
| | - Siripat Ngoennet
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Masaki Honda
- Department of Chemistry, Faculty of Science and Technology, Meijo University, Nagoya, Aichi, 468-8502, Japan
| | - Takashi Hibino
- Graduate School of Environmental and Human Sciences, Meijo University, Nagoya, Aichi, 468-8502, Japan; Department of Chemistry, Faculty of Science and Technology, Meijo University, Nagoya, Aichi, 468-8502, Japan
| | | | - Hakuto Kageyama
- Graduate School of Environmental and Human Sciences, Meijo University, Nagoya, Aichi, 468-8502, Japan; Department of Chemistry, Faculty of Science and Technology, Meijo University, Nagoya, Aichi, 468-8502, Japan.
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31
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Douchi D, Liang F, Cano M, Xiong W, Wang B, Maness PC, Lindblad P, Yu J. Membrane-Inlet Mass Spectrometry Enables a Quantitative Understanding of Inorganic Carbon Uptake Flux and Carbon Concentrating Mechanisms in Metabolically Engineered Cyanobacteria. Front Microbiol 2019; 10:1356. [PMID: 31293533 PMCID: PMC6604854 DOI: 10.3389/fmicb.2019.01356] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 05/31/2019] [Indexed: 01/04/2023] Open
Abstract
Photosynthesis uses solar energy to drive inorganic carbon (Ci) uptake, fixation, and biomass formation. In cyanobacteria, Ci uptake is assisted by carbon concentrating mechanisms (CCM), and CO2 fixation is catalyzed by RubisCO in the Calvin-Benson-Bassham (CBB) cycle. Understanding the regulation that governs CCM and CBB cycle activities in natural and engineered strains requires methods and parameters that quantify these activities. Here, we used membrane-inlet mass spectrometry (MIMS) to simultaneously quantify Ci concentrating and fixation processes in the cyanobacterium Synechocystis 6803. By comparing cultures acclimated to ambient air conditions to cultures transitioning to high Ci conditions, we show that acclimation to high Ci involves a concurrent decline of Ci uptake and fixation parameters. By varying light input, we show that both CCM and CBB reactions become energy limited under low light conditions. A strain over-expressing the gene for the CBB cycle enzyme fructose-bisphosphate aldolase showed higher CCM and carbon fixation capabilities, suggesting a regulatory link between CBB metabolites and CCM capacity. While the engineering of an ethanol production pathway had no effect on CCM or carbon fixation parameters, additional fructose-bisphosphate aldolase gene over-expression enhanced both activities while simultaneously increasing ethanol productivity. These observations show that MIMS can be a useful tool to study the extracellular Ci flux and how CBB metabolites regulate Ci uptake and fixation.
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Affiliation(s)
- Damien Douchi
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO, United States
| | - Feiyan Liang
- Microbial Chemistry, Department of Chemistry-Ångström, Uppsala University, Uppsala, Sweden
| | - Melissa Cano
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO, United States
| | - Wei Xiong
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO, United States
| | - Bo Wang
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO, United States
| | - Pin-Ching Maness
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO, United States
| | - Peter Lindblad
- Microbial Chemistry, Department of Chemistry-Ångström, Uppsala University, Uppsala, Sweden
| | - Jianping Yu
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO, United States
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Simkin AJ, López-Calcagno PE, Raines CA. Feeding the world: improving photosynthetic efficiency for sustainable crop production. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:1119-1140. [PMID: 30772919 PMCID: PMC6395887 DOI: 10.1093/jxb/ery445] [Citation(s) in RCA: 213] [Impact Index Per Article: 42.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 11/27/2018] [Indexed: 05/18/2023]
Abstract
A number of recent studies have provided strong support demonstrating that improving the photosynthetic processes through genetic engineering can provide an avenue to improve yield potential. The major focus of this review is on improvement of the Calvin-Benson cycle and electron transport. Consideration is also given to how altering regulatory process may provide an additional route to increase photosynthetic efficiency. Here we summarize some of the recent successes that have been observed through genetic manipulation of photosynthesis, showing that, in both the glasshouse and the field, yield can be increased by >40%. These results provide a clear demonstration of the potential for increasing yield through improvements in photosynthesis. In the final section, we consider the need to stack improvement in photosynthetic traits with traits that target the yield gap in order to provide robust germplasm for different crops across the globe.
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Affiliation(s)
- Andrew J Simkin
- NIAB EMR, New Road, East Malling, Kent, UK
- School of Biological Sciences, Wivenhoe Park, University of Essex, Colchester, UK
| | | | - Christine A Raines
- School of Biological Sciences, Wivenhoe Park, University of Essex, Colchester, UK
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Comparative physiological and leaf proteome analysis between drought-tolerant chickpea Cicer reticulatum and drought-sensitive chickpea C. arietinum. J Biosci 2019. [DOI: 10.1007/s12038-018-9836-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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34
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He Y, Xue H, Li Y, Wang X. Nitric oxide alleviates cell death through protein S-nitrosylation and transcriptional regulation during the ageing of elm seeds. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:5141-5155. [PMID: 30053069 PMCID: PMC6184755 DOI: 10.1093/jxb/ery270] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Accepted: 07/14/2018] [Indexed: 05/23/2023]
Abstract
Seed ageing is a major problem in the conservation of germplasm resources. The involvement of possible signalling molecules during seed deterioration needs to be identified. In this study, we confirmed that nitric oxide (NO), a key signalling molecule in plants, plays a positive role in the resistance of elm seeds to deterioration. To explore which metabolic pathways were affected by NO, an untargeted metabolomic analysis was conducted, and 163 metabolites could respond to both NO and the ageing treatment. The primary altered pathways include glutathione, methionine, and carbohydrate metabolism. The genes involved in glutathione and methionine metabolism were up-regulated by NO at the transcriptional level. Using a biotin switch method, proteins with an NO-dependent post-translational modification were screened during seed deterioration, and 82 putative S-nitrosylated proteins were identified. Eleven of these proteins were involved in carbohydrate metabolism, and the activities of the three enzymes were regulated by NO. In combination, the results of the metabolomic and S-nitrosoproteomic studies demonstrated that NO could activate glycolysis and inhibit the pentose phosphate pathway. In summary, the combination of these results demonstrated that NO could modulate carbohydrate metabolism at the post-translational level and regulate glutathione and methionine metabolism at the transcriptional level. It provides initial insights into the regulatory mechanisms of NO in seed deterioration.
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Affiliation(s)
- Yuqi He
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Haidian District, Beijing, PR China
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Haidian District, Beijing, PR China
| | - Hua Xue
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Haidian District, Beijing, PR China
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Haidian District, Beijing, PR China
| | - Ying Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Haidian District, Beijing, PR China
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Haidian District, Beijing, PR China
| | - Xiaofeng Wang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Haidian District, Beijing, PR China
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Haidian District, Beijing, PR China
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35
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Pawłowicz I, Waśkiewicz A, Perlikowski D, Rapacz M, Ratajczak D, Kosmala A. Remodeling of chloroplast proteome under salinity affects salt tolerance of Festuca arundinacea. PHOTOSYNTHESIS RESEARCH 2018; 137:475-492. [PMID: 29881986 DOI: 10.1007/s11120-018-0527-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 05/29/2018] [Indexed: 06/08/2023]
Abstract
Acclimation of photosynthetic apparatus to variable environmental conditions is an important component of tolerance to dehydration stresses, including salinity. The present study deals with the research on alterations in chloroplast proteome of the forage grasses. Based on chlorophyll fluorescence parameters, two genotypes of a model grass species-Festuca arundinacea with distinct levels of salinity tolerance: low salt tolerant (LST) and high salt tolerant (HST), were selected. Next, two-dimensional electrophoresis and mass spectrometry were applied under both control and salt stress conditions to identify proteins accumulated differentially between these two genotypes. The physiological analysis revealed that under NaCl treatment the studied plants differed in photosystem II activity, water content, and ion accumulation. The differentially accumulated proteins included ATPase B, ATP synthase, ribulose-1,5-bisphosphate carboxylase large and small subunits, cytochrome b6-f complex iron-sulfur subunit, oxygen-evolving enhancer proteins (OEE), OEE1 and OEE2, plastidic fructose-bisphosphate aldolase (pFBA), and lipocalin. A higher level of lipocalin, potentially involved in prevention of lipid peroxidation under stress, was also observed in the HST genotype. Our physiological and proteomic results performed for the first time on the species of forage grasses clearly showed that chloroplast metabolism adjustment could be a crucial factor in developing salinity tolerance.
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Affiliation(s)
- Izabela Pawłowicz
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479, Poznan, Poland.
| | - Agnieszka Waśkiewicz
- Department of Chemistry, Poznań University of Life Sciences, Wojska Polskiego 75, 60-637, Poznan, Poland
| | - Dawid Perlikowski
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479, Poznan, Poland
| | - Marcin Rapacz
- Department of Plant Physiology, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Podluzna 3, 30-239, Krakow, Poland
| | - Dominika Ratajczak
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479, Poznan, Poland
| | - Arkadiusz Kosmala
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479, Poznan, Poland
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Cai B, Li Q, Liu F, Bi H, Ai X. Decreasing fructose-1,6-bisphosphate aldolase activity reduces plant growth and tolerance to chilling stress in tomato seedlings. PHYSIOLOGIA PLANTARUM 2018; 163:247-258. [PMID: 29230823 DOI: 10.1111/ppl.12682] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 10/23/2017] [Accepted: 12/07/2017] [Indexed: 05/23/2023]
Abstract
In northern China, low temperature is the most common abiotic stresses for tomato plants cultivated in solar-greenhouse in winter. We recently found that the expression and enzyme activity of fructose-1,6-bisphosphate aldolases (FBAs) in tomato, which are important enzymes in the Calvin-Benson cycle (CBC), were significantly altered in tomato seedlings subjected to heat/cold stresses. In order to study the role of FBA in photosynthesis and in regulating cold stress responses of tomato seedlings (Solanum lycopersicum), we transformed a tomato inbred line (FF) with RNA interference (RNAi) vector containing SlFBA7 reverse tandem repeat sequence. We found that the decreased SlFBA7 expression led to the decreased activities of FBA, as well as the activities of other main enzymes in the CBC. We also noticed a decrease in net photosynthetic rate, ribulose-1,5-bisphosphate and soluble sugar content, stem diameter, dry weight and seed size in RNAi SlFBA7 plants compared to wild-type. However, there are no changes in starch contents in the RNAi transgenic plants. RNAi SlFBA7 plants showed a decreased germination rate, and an increased levels of superoxide anions (O2·- ) and hydrogen peroxide (H2 O2 ) under low temperature (8/5°C) and low-light intensity (100 μmol m-2 s-1 photon flux density) growth conditions. These findings demonstrated the important role of SlFBA7 in regulating growth and chilling tolerance of tomato seedlings, and suggested that the catalytic activity of FBA in the CBC is sensitive to temperature.
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Affiliation(s)
- Bingbing Cai
- State Key Laboratory of Crop Biology/Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, Ministry of Agriculture/College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Qiang Li
- State Key Laboratory of Crop Biology/Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, Ministry of Agriculture/College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Fengjiao Liu
- State Key Laboratory of Crop Biology/Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, Ministry of Agriculture/College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Huangai Bi
- State Key Laboratory of Crop Biology/Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, Ministry of Agriculture/College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Xizhen Ai
- State Key Laboratory of Crop Biology/Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, Ministry of Agriculture/College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, 271018, China
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37
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Exceeding the theoretical fermentation yield in mixotrophic Rubisco-based engineered Escherichia coli. Metab Eng 2018; 47:445-452. [PMID: 29704653 DOI: 10.1016/j.ymben.2018.04.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/04/2018] [Accepted: 04/23/2018] [Indexed: 11/21/2022]
Abstract
Rubisco-based engineered Escherichia coli MZLFB (E. coli BL21(DE3) Δzwf, Δldh, Δfrd) containing heterologous phosphoribulokinase (Prk) and Ribulose-1,5- bisphosphate carboxylase/oxygenase (Rubisco) was constructed for the mixotrophic growth. However, in situ CO2 recycling was hindered by clogs of pyruvate during glucose metabolism, which consequently resulted in an insufficient regeneration of NAD+ through the pflB-mediated ethanol production. Recombinant plasmid pLOI295 (encodes pyruvate decarboxylase and alcohol dehydrogenase II, referred to as the Pdc-based carbon tap valve (CTV) for convenience) was introduced into E. coli MZLFB + CTV to bypass the pflB-mediated ethanol production. Results show that while the C-2/C-1 ratio (i.e., the molar ratio of ethanol and acetate to formate and total CO2) for parental strain MZLFB was 1.0 ± 0.1, the C-2/C-1 for MZLFB + CTV increased to 1.6 ± 0.1. This indicates that the Pdc-based CTV enhanced the performance of in situ CO2 recycling. By simultaneously utilizing glucose and CO2, the fermentation product yield of MZLFB + CTV exceeded the normal theoretical yield and reached 2.2 ± 0.0 (mol/mol). In silico analysis shows that 61% of the glucose consumption went through the Rubisco-based engineered pathway when the CTV was equipped. Also shown are the average CO2 consumption rate of 55.3 mg L-1·h-1 and an average ethanol production rate of 144.8 mg L-1·h-1. The conversion of CO2 to ethanol through the Rubisco-based engineered pathway and the Pdc-based carbon tap valve is important for mixotrophic growth, since these two modules serve as the energy sink to achieve intracellular energy balance. Also, during mixotrophic growth, ATP production from a certain percentage (39% in this study) of the EMP pathway activity is needed for mixotrophic growth.
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Głowacka K, Kromdijk J, Kucera K, Xie J, Cavanagh AP, Leonelli L, Leakey ADB, Ort DR, Niyogi KK, Long SP. Photosystem II Subunit S overexpression increases the efficiency of water use in a field-grown crop. Nat Commun 2018; 9:868. [PMID: 29511193 PMCID: PMC5840416 DOI: 10.1038/s41467-018-03231-x] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 01/26/2018] [Indexed: 12/29/2022] Open
Abstract
Insufficient water availability for crop production is a mounting barrier to achieving the 70% increase in food production that will be needed by 2050. One solution is to develop crops that require less water per unit mass of production. Water vapor transpires from leaves through stomata, which also facilitate the influx of CO2 during photosynthetic assimilation. Here, we hypothesize that Photosystem II Subunit S (PsbS) expression affects a chloroplast-derived signal for stomatal opening in response to light, which can be used to improve water-use efficiency. Transgenic tobacco plants with a range of PsbS expression, from undetectable to 3.7 times wild-type are generated. Plants with increased PsbS expression show less stomatal opening in response to light, resulting in a 25% reduction in water loss per CO2 assimilated under field conditions. Since the role of PsbS is universal across higher plants, this manipulation should be effective across all crops.
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Affiliation(s)
- Katarzyna Głowacka
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, 61801, USA
- Institute of Plant Genetics, Polish Academy of Sciences, 60-479, Poznań, Poland
| | - Johannes Kromdijk
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, 61801, USA
| | - Katherine Kucera
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, 61801, USA
| | - Jiayang Xie
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, 61801, USA
- Department of Crop Sciences, University of Illinois, Urbana, IL, 61801, USA
| | - Amanda P Cavanagh
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, 61801, USA
| | - Lauriebeth Leonelli
- Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Andrew D B Leakey
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, 61801, USA
- Department of Crop Sciences, University of Illinois, Urbana, IL, 61801, USA
- Department of Plant Biology, University of Illinois, Urbana, IL, 61801, USA
| | - Donald R Ort
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, 61801, USA
- Photosynthesis Research Unit, US Department of Agriculture-Agricultural Research Service, University of Illinois, Urbana, IL, 61801, USA
| | - Krishna K Niyogi
- Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, 94720, USA.
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
| | - Stephen P Long
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, 61801, USA.
- Lancaster Environment Centre, University of Lancaster, Lancaster, LA1 1YX, UK.
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De Porcellinis AJ, Nørgaard H, Brey LMF, Erstad SM, Jones PR, Heazlewood JL, Sakuragi Y. Overexpression of bifunctional fructose-1,6-bisphosphatase/sedoheptulose-1,7-bisphosphatase leads to enhanced photosynthesis and global reprogramming of carbon metabolism in Synechococcus sp. PCC 7002. Metab Eng 2018; 47:170-183. [PMID: 29510212 DOI: 10.1016/j.ymben.2018.03.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 02/02/2018] [Accepted: 03/01/2018] [Indexed: 12/25/2022]
Abstract
Cyanobacteria fix atmospheric CO2 to biomass and through metabolic engineering can also act as photosynthetic factories for sustainable productions of fuels and chemicals. The Calvin Benson cycle is the primary pathway for CO2 fixation in cyanobacteria, algae and C3 plants. Previous studies have overexpressed the Calvin Benson cycle enzymes, ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) and bifunctional sedoheptulose-1,7-bisphosphatase/fructose-1,6-bisphosphatase (hereafter BiBPase), in both plants and algae, although their impacts on cyanobacteria have not yet been rigorously studied. Here, we show that overexpression of BiBPase and RuBisCO have distinct impacts on carbon metabolism in the cyanobacterium Synechococcus sp. PCC 7002 through physiological, biochemical, and proteomic analyses. The former enhanced growth, cell size, and photosynthetic O2 evolution, and coordinately upregulated enzymes in the Calvin Benson cycle including RuBisCO and fructose-1,6-bisphosphate aldolase. At the same time it downregulated enzymes in respiratory carbon metabolism (glycolysis and the oxidative pentose phosphate pathway) including glucose-6-phosphate dehydrogenase (G6PDH). The content of glycogen was also significantly reduced while the soluble carbohydrate content increased. These results indicate that overexpression of BiBPase leads to global reprogramming of carbon metabolism in Synechococcus sp. PCC 7002, promoting photosynthetic carbon fixation and carbon partitioning towards non-storage carbohydrates. In contrast, whilst overexpression of RuBisCO had no measurable impact on growth and photosynthetic O2 evolution, it led to coordinated increase in the abundance of proteins involved in pyruvate metabolism and fatty acid biosynthesis. Our results underpin that singular genetic modifications in the Calvin Benson cycle can have far broader cellular impact than previously expected. These features could be exploited to more efficiently direct carbons towards desired bioproducts.
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Affiliation(s)
- Alice Jara De Porcellinis
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark; Copenhagen Plant Science Center, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark; Carlsberg Research Laboratory, 100 Ny Carlsberg Vej, 1799 Copenhagen V, Denmark
| | - Hanne Nørgaard
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark; Novo Nordisk, Novo Nordisk Park 1, 2760 Måløv, Denmark
| | - Laura Maria Furelos Brey
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark; Copenhagen Plant Science Center, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark
| | - Simon Matthé Erstad
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark; Copenhagen Plant Science Center, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark
| | - Patrik R Jones
- Department Life Sciences, Imperial College London, Sir Alexander Fleming Building, London SW7 2AZ, UK
| | - Joshua L Heazlewood
- Joint BioEnergy Institute and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; School of BioSciences, The University of Melbourne, Victoria 3010, Australia
| | - Yumiko Sakuragi
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark; Copenhagen Plant Science Center, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark.
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40
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Okeke UG, Akdemir D, Rabbi I, Kulakow P, Jannink JL. Regional Heritability Mapping Provides Insights into Dry Matter Content in African White and Yellow Cassava Populations. THE PLANT GENOME 2018; 11:10.3835/plantgenome2017.06.0050. [PMID: 29505634 PMCID: PMC7822058 DOI: 10.3835/plantgenome2017.06.0050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 06/20/2017] [Indexed: 05/21/2023]
Abstract
The HarvestPlus program for cassava ( Crantz) fortifies cassava with β-carotene by breeding for carotene-rich tubers (yellow cassava). However, a negative correlation between yellowness and dry matter (DM) content has been identified. We investigated the genetic control of DM in white and yellow cassava. We used regional heritability mapping (RHM) to associate DM with genomic segments in both subpopulations. Significant segments were subjected to candidate gene analysis and candidates were validated with prediction accuracies. The RHM procedure was validated via a simulation approach and revealed significant hits for white cassava on chromosomes 1, 4, 5, 10, 17, and 18, whereas hits for the yellow were on chromosome 1. Candidate gene analysis revealed genes in the carbohydrate biosynthesis pathway including plant serine-threonine protein kinases (SnRKs), UDP (uridine diphosphate)-glycosyltransferases, UDP-sugar transporters, invertases, pectinases, and regulons. Validation using 1252 unique identifiers from the SnRK gene family genome-wide recovered 50% of the predictive accuracy of whole-genome single nucleotide polymorphisms for DM, whereas validation using 53 likely genes (extracted from the literature) from significant segments recovered 32%. Genes including an acid invertase, a neutral or alkaline invertase, and a glucose-6-phosphate isomerase were validated on the basis of an a priori list for the cassava starch pathway, and also a fructose-biphosphate aldolase from the Calvin cycle pathway. The power of the RHM procedure was estimated as 47% when the causal quantitative trait loci generated 10% of the phenotypic variance (sample size = 451). Cassava DM genetics are complex and RHM may be useful for complex traits.
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Affiliation(s)
- Uche Godfrey Okeke
- Section of Plant Breeding and Genetics, School of Integrative
Plant Sci., College of Agriculture and Life Sci., Cornell Univ., 14853, Ithaca,
NY
| | - Deniz Akdemir
- Section of Plant Breeding and Genetics, School of Integrative
Plant Sci., College of Agriculture and Life Sci., Cornell Univ., 14853, Ithaca,
NY
- current address, Statgen Consulting, Ithaca, NY 14850
| | | | | | - Jean-Luc Jannink
- Section of Plant Breeding and Genetics, School of Integrative
Plant Sci., College of Agriculture and Life Sci., Cornell Univ., 14853, Ithaca,
NY
- USDAARS, Robert W. Holley Centre for Agriculture and Health, Tower
Road, Ithaca, NY 14853
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41
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Affiliation(s)
- Qingwei Zhang
- Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, Germany
| | - Dorothea Bartels
- Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, Germany
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Abstract
Abstract
Since the discovery of its role in the CO2 fixation reaction in photosynthesis, RuBisCO has been one of the most extensively researched enzymes in the fields of biochemistry, molecular biology, and molecular genetics as well as conventional plant physiology, agricultural chemistry, and crop science. In addition, the RuBisCO and RuBisCO-like genes of more than 2000 organisms have been sequenced during the past 20 years. During the course of those studies, the origin of the RuBisCO gene began to be discussed. Recent studies have reported that the RuBisCO gene emerged in methanogenic bacteria long before photosynthetic organisms appeared. The origin of similar early genes might have allowed this gene to overcome changes in global environments during ancient and recent eras and to participate in the fixation of 200 GT of CO2 annually. In this review, I focus on several points that have not been discussed at length in the literature thus far.
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Affiliation(s)
- Akiho Yokota
- R & D Department, Plant Hi-Tech Institute, Ltd., Ikoma, Japan
- Yokota CREST Laboratory, c/o Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Japan
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Comparative transcriptome analysis of the floral transition in Rosa chinensis 'Old Blush' and R. odorata var. gigantea. Sci Rep 2017; 7:6068. [PMID: 28729527 PMCID: PMC5519770 DOI: 10.1038/s41598-017-05850-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 06/05/2017] [Indexed: 11/17/2022] Open
Abstract
The floral transition is a crucial developmental event, but little is known about the underlying regulatory networks in seasonally and continuously flowering roses. In this study, we compared the genetic basis of flowering in two rose species, Rosa chinensis ‘Old Blush’, which flowers continuously, and R. odorata var. gigantea, which blooms in early spring. Gene ontology (GO) terms related to methylation, light reaction, and starch metabolism were enriched in R. odorata var. gigantea and terms associated with sugar metabolism were enriched in R. chinensis ‘Old Blush’ during the floral transition. A MapMan analysis revealed that genes involved in hormone signaling mediate the floral transition in both taxa. Furthermore, differentially expressed genes (DEGs) involved in vernalization, photoperiod, gibberellin (GA), and starch metabolism pathways converged on integrators, e.g., LFY, AGL24, SOC1, CAL, and COLs, to regulate the floral transition in R. odorata var. gigantea, while DEGs related to photoperiod, sugar metabolism, and GA pathways, including COL16, LFY, AGL11, 6PGDH, GASA4, and BAM, modulated the floral transition in R. chinensis ‘Old Blush.’ Our analysis of the genes underlying the floral transition in roses with different patterns of flowering provides a basis for further functional studies.
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Simkin AJ, Lopez‐Calcagno PE, Davey PA, Headland LR, Lawson T, Timm S, Bauwe H, Raines CA. Simultaneous stimulation of sedoheptulose 1,7-bisphosphatase, fructose 1,6-bisphophate aldolase and the photorespiratory glycine decarboxylase-H protein increases CO 2 assimilation, vegetative biomass and seed yield in Arabidopsis. PLANT BIOTECHNOLOGY JOURNAL 2017; 15:805-816. [PMID: 27936496 PMCID: PMC5466442 DOI: 10.1111/pbi.12676] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/25/2016] [Accepted: 11/30/2016] [Indexed: 05/18/2023]
Abstract
In this article, we have altered the levels of three different enzymes involved in the Calvin-Benson cycle and photorespiratory pathway. We have generated transgenic Arabidopsis plants with altered combinations of sedoheptulose 1,7-bisphosphatase (SBPase), fructose 1,6-bisphophate aldolase (FBPA) and the glycine decarboxylase-H protein (GDC-H) gene identified as targets to improve photosynthesis based on previous studies. Here, we show that increasing the levels of the three corresponding proteins, either independently or in combination, significantly increases the quantum efficiency of PSII. Furthermore, photosynthetic measurements demonstrated an increase in the maximum efficiency of CO2 fixation in lines over-expressing SBPase and FBPA. Moreover, the co-expression of GDC-H with SBPase and FBPA resulted in a cumulative positive impact on leaf area and biomass. Finally, further analysis of transgenic lines revealed a cumulative increase of seed yield in SFH lines grown in high light. These results demonstrate the potential of multigene stacking for improving the productivity of food and energy crops.
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Affiliation(s)
| | | | - Philip A. Davey
- School of Biological SciencesUniversity of EssexColchesterUK
| | | | - Tracy Lawson
- School of Biological SciencesUniversity of EssexColchesterUK
| | - Stefan Timm
- Plant Physiology DepartmentUniversity of RostockRostockGermany
| | - Hermann Bauwe
- Plant Physiology DepartmentUniversity of RostockRostockGermany
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Han X, Zhu X, Hong Z, Wei L, Ren Y, Wan F, Zhu S, Peng H, Guo L, Rao L, Feng L, Wan J. Structure-Based Rational Design of Novel Inhibitors Against Fructose-1,6-Bisphosphate Aldolase from Candida albicans. J Chem Inf Model 2017; 57:1426-1438. [DOI: 10.1021/acs.jcim.6b00763] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Xinya Han
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Xiuyun Zhu
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Zongqin Hong
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Lin Wei
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Yanliang Ren
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Fen Wan
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Shuaihua Zhu
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Hao Peng
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Li Guo
- Hubei Environmental
Monitoring Central Station, Wuhan 430072, Hubei China
| | - Li Rao
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Lingling Feng
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Jian Wan
- International Cooperation Base of Pesticide and Green Synthesis (Hubei), Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
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Hu L, Liao W, Dawuda MM, Yu J, Lv J. Appropriate NH 4+: NO 3- ratio improves low light tolerance of mini Chinese cabbage seedlings. BMC PLANT BIOLOGY 2017; 17:22. [PMID: 28114905 PMCID: PMC5259974 DOI: 10.1186/s12870-017-0976-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 01/12/2017] [Indexed: 05/03/2023]
Abstract
BACKGROUND In northwest of China, mini Chinese cabbage (Brassica pekinensis) is highly valued by consumers, and is widely cultivated during winter in solar-greenhouses where low light (LL) fluence (between 85 and 150 μmol m-2 s-1 in day) is a major abiotic stress factor limiting plant growth and crop productivity. The mechanisms with which various NH4+: NO3- ratios affected growth and photosynthesis of mini Chinese cabbage under normal (200 μmol m-2 s-1) and low (100 μmol m-2 s-1) light conditions was investigated. The four solutions with different ratios of NH4+: NO3- applied were 0:100, 10:90, 15:85 and 25:75 with the set up in a glasshouse in hydroponic culture. The most appropriate NH4+: NO3- ratio that improved the tolerance of mini Chinese cabbage seedlings to LL was found in our current study. RESULTS Under low light, the application of NH4+: NO3- (10:90) significantly stimulated growth compared to only NO3- by increasing leaf area, canopy spread, biomass accumulation, and net photosynthetic rate. The increase in net photosynthetic rate was associated with an increase in: 1) maximum and effective quantum yield of PSII; 2) activities of Calvin cycle enzymes; and 3) levels of mRNA relative expression of several genes involved in Calvin cycle. In addition, glucose, fructose, sucrose, starch and total carbohydrate, which are the products of CO2 assimilation, accumulated most in the cabbage leaves that were supplied with NH4+: NO3- (10:90) under LL condition. Low light reduced the carbohydrate: nitrogen (C: N) ratio while the application of NH4+: NO3- (10:90) alleviated the negative effect of LL on C: N ratio mainly by increasing total carbohydrate contents. CONCLUSIONS The application of NH4+:NO3- (10:90) increased rbcL, rbcS, FBA, FBPase and TK expression and/or activities, enhanced photosynthesis, carbohydrate accumulation and improved the tolerance of mini Chinese cabbage seedlings to LL. The results of this study would provide theoretical basis and technical guidance for mini Chinese cabbage production. In practical production, the ratio of NH4+:NO3- should be adjusted with respect to light fluence for successful growing of mini Chinese cabbage.
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Affiliation(s)
- Linli Hu
- College of Horticulture, Gansu Agricultural University, No. 1 Yingmen Village, Anning District, Lanzhou, 730070 People’s Republic of China
| | - Weibiao Liao
- College of Horticulture, Gansu Agricultural University, No. 1 Yingmen Village, Anning District, Lanzhou, 730070 People’s Republic of China
| | - Mohammed Mujitaba Dawuda
- College of Horticulture, Gansu Agricultural University, No. 1 Yingmen Village, Anning District, Lanzhou, 730070 People’s Republic of China
- Department of Horticulture, FoA, University for Development Studies, P. O. Box TL 1882, Tamale, Ghana
| | - Jihua Yu
- College of Horticulture, Gansu Agricultural University, No. 1 Yingmen Village, Anning District, Lanzhou, 730070 People’s Republic of China
| | - Jian Lv
- College of Horticulture, Gansu Agricultural University, No. 1 Yingmen Village, Anning District, Lanzhou, 730070 People’s Republic of China
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Yang B, Liu J, Ma X, Guo B, Liu B, Wu T, Jiang Y, Chen F. Genetic engineering of the Calvin cycle toward enhanced photosynthetic CO 2 fixation in microalgae. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:229. [PMID: 29034004 PMCID: PMC5629779 DOI: 10.1186/s13068-017-0916-8] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 09/26/2017] [Indexed: 05/18/2023]
Abstract
BACKGROUND Photosynthetic microalgae are emerging as potential biomass feedstock for sustainable production of biofuels and value-added bioproducts. CO2 biomitigation through these organisms is considered as an eco-friendly and promising alternative to the existing carbon sequestration methods. Nonetheless, the inherent relatively low photosynthetic capacity of microalgae has hampered the practical use of this strategy for CO2 biomitigation applications. RESULTS Here, we demonstrate the feasibility of improving photosynthetic capacity by the genetic manipulation of the Calvin cycle in the typical green microalga Chlorella vulgaris. Firstly, we fused a plastid transit peptide to upstream of the enhanced green fluorescent protein (EGFP) and confirmed its expression in the chloroplast of C. vulgaris. Then we introduced the cyanobacterial fructose 1,6-bisphosphate aldolase, guided by the plastid transit peptide, into C. vulgaris chloroplast, leading to enhanced photosynthetic capacity (~ 1.2-fold) and cell growth. Molecular and physiochemical analyses suggested a possible role for aldolase overexpression in promoting the regeneration of ribulose 1,5-bisphosphate in the Calvin cycle and energy transfer in photosystems. CONCLUSIONS Our work represents a proof-of-concept effort to enhance photosynthetic capacity by the engineering of the Calvin cycle in green microalgae. Our work also provides insights into targeted genetic engineering toward algal trait improvement for CO2 biomitigation uses.
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Affiliation(s)
- Bo Yang
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
| | - Jin Liu
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
- Singapore-Peking University Research Centre for a Sustainable Low-Carbon Future, CREATE Tower, Singapore, 138602 Singapore
| | - Xiaonian Ma
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
| | - Bingbing Guo
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
| | - Bin Liu
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
| | - Tao Wu
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
| | - Yue Jiang
- Runke Bioengineering Co., Ltd., Zhangzhou, 363502 China
| | - Feng Chen
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
- Singapore-Peking University Research Centre for a Sustainable Low-Carbon Future, CREATE Tower, Singapore, 138602 Singapore
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Effects of overexpressing photosynthetic carbon flux control enzymes in the cyanobacterium Synechocystis PCC 6803. Metab Eng 2016; 38:56-64. [DOI: 10.1016/j.ymben.2016.06.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 05/11/2016] [Accepted: 06/17/2016] [Indexed: 12/19/2022]
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Cai B, Li Q, Xu Y, Yang L, Bi H, Ai X. Genome-wide analysis of the fructose 1,6-bisphosphate aldolase (FBA) gene family and functional characterization of FBA7 in tomato. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 108:251-265. [PMID: 27474933 DOI: 10.1016/j.plaphy.2016.07.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 07/15/2016] [Accepted: 07/18/2016] [Indexed: 05/01/2023]
Abstract
Fructose 1,6-bisphosphate aldolase (FBA) is a key enzyme in plants that is involved in glycolysis, gluconeogenesis, and the Calvin cycle. FBA genes play significant roles in biotic and abiotic stress responses and also regulate growth and development. Despite the importance of FBA genes, little is known about it in tomato. In this study, we identified 8 FBA genes in tomato and classified them into 2 subgroups based on a phylogenetic tree, gene structures, and conserved motifs. Five (SlFBA1, 2, 3, 4 and 5) and three (SlFBA6, 7, and 8) SlFBA proteins were predicted to be localized in chloroplasts and cytoplasm, respectively. The phylogenetic analysis of FBAs from tomato, Arabidopsis, rice, and other organisms suggested that SlFBA shared the highest protein homology with FBAs from other plants. Synteny analysis indicated that segmental duplication events contributed to the expansion of the tomato FBA family. The expression profiles revealed that all SlFBAs were involved in the response to low and high temperature stresses. SlFBA7 overexpression increased the expression and activities of other main enzymes in Calvin cycle, net photosynthetic rate (Pn), seed size and stem diameter. SlFBA7 overexpression enhanced tolerances in seed germination under suboptimal temperature stresses. Taken together, comprehensive analyses of SlFBAs would provide a basis for understanding of evolution and function of SlFBA family.
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Affiliation(s)
- Bingbing Cai
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
| | - Qiang Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
| | - Yongchao Xu
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
| | - Long Yang
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
| | - Huangai Bi
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
| | - Xizhen Ai
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
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Santos BMD, Balbuena TS. Carbon assimilation in Eucalyptus urophylla grown under high atmospheric CO 2 concentrations: A proteomics perspective. J Proteomics 2016; 150:252-257. [PMID: 27677843 DOI: 10.1016/j.jprot.2016.09.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/16/2016] [Accepted: 09/21/2016] [Indexed: 11/26/2022]
Abstract
Photosynthetic organisms may be drastically affected by the future climate projections of a considerable increase in CO2 concentrations. Growth under a high concentration of CO2 could stimulate carbon assimilation-especially in C3-type plants. We used a proteomics approach to test the hypothesis of an increase in the abundance of the enzymes involved in carbon assimilation in Eucalyptus urophylla plants grown under conditions of high atmospheric CO2. Our strategy allowed the profiling of all Calvin-Benson cycle enzymes and associated protein species. Among the 816 isolated proteins, those involved in carbon fixation were found to be the most abundant ones. An increase in the abundance of six key enzymes out of the eleven core enzymes involved in carbon fixation was detected in plants grown at a high CO2 concentration. Proteome changes were corroborated by the detection of a decrease in the stomatal aperture and in the vascular bundle area in Eucalyptus urophylla plantlets grown in an environment of high atmospheric CO2. Our proteomics approach indicates a positive metabolic response regarding carbon fixation in a CO2-enriched atmosphere. The slight but significant increase in the abundance of the Calvin enzymes suggests that stomatal closure did not prevent an increase in the carbon assimilation rates. BIOLOGICAL SIGNIFICANCE The sample enrichment strategy and data analysis used here enabled the identification of all enzymes and most protein isoforms involved in the Calvin-Benson-Bessham cycle in Eucalyptus urophylla. Upon growth in CO2-enriched chambers, Eucalyptus urophylla plantlets responded by reducing the vascular bundle area and stomatal aperture size and by increasing the abundance of six of the eleven core enzymes involved in carbon fixation. Our proteome approach provides an estimate on how a commercially important C3-type plant would respond to an increase in CO2 concentrations. Additionally, confirmation at the protein level of the predicted genes involved in carbon assimilation may be used in plant transformation strategies aiming to increase plant adaptability to climate changes or to increase plant productivity.
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Affiliation(s)
- Bruna Marques Dos Santos
- Departamento de Tecnologia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual "Júlio de Mesquita Filho", Jaboticabal, SP, Brazil
| | - Tiago Santana Balbuena
- Departamento de Tecnologia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual "Júlio de Mesquita Filho", Jaboticabal, SP, Brazil.
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