1
|
Chen L, Ghannoum O, Furbank RT. Sugar sensing in C4 source leaves: a gap that needs to be filled. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:3818-3834. [PMID: 38642398 PMCID: PMC11233418 DOI: 10.1093/jxb/erae166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 04/18/2024] [Indexed: 04/22/2024]
Abstract
Plant growth depends on sugar production and export by photosynthesizing source leaves and sugar allocation and import by sink tissues (grains, roots, stems, and young leaves). Photosynthesis and sink demand are tightly coordinated through metabolic (substrate, allosteric) feedback and signalling (sugar, hormones) mechanisms. Sugar signalling integrates sugar production with plant development and environmental cues. In C3 plants (e.g. wheat and rice), it is well documented that sugar accumulation in source leaves, due to source-sink imbalance, negatively feeds back on photosynthesis and plant productivity. However, we have a limited understanding about the molecular mechanisms underlying those feedback regulations, especially in C4 plants (e.g. maize, sorghum, and sugarcane). Recent work with the C4 model plant Setaria viridis suggested that C4 leaves have different sugar sensing thresholds and behaviours relative to C3 counterparts. Addressing this research priority is critical because improving crop yield requires a better understanding of how plants coordinate source activity with sink demand. Here we review the literature, present a model of action for sugar sensing in C4 source leaves, and suggest ways forward.
Collapse
Affiliation(s)
- Lily Chen
- ARC Centre of Excellence for Translational Photosynthesis, Hawkesbury Institute for the Environment, Western Sydney University, Hawkesbury Campus, NSW, 2753, Australia
| | - Oula Ghannoum
- ARC Centre of Excellence for Translational Photosynthesis, Hawkesbury Institute for the Environment, Western Sydney University, Hawkesbury Campus, NSW, 2753, Australia
| | - Robert T Furbank
- ARC Centre of Excellence for Translational Photosynthesis, Research School of Biology, The Australian National University, Canberra, ACT, 2601, Australia
| |
Collapse
|
2
|
Kumar T, Wang JG, Xu CH, Lu X, Mao J, Lin XQ, Kong CY, Li CJ, Li XJ, Tian CY, Ebid MHM, Liu XL, Liu HB. Genetic Engineering for Enhancing Sugarcane Tolerance to Biotic and Abiotic Stresses. PLANTS (BASEL, SWITZERLAND) 2024; 13:1739. [PMID: 38999579 PMCID: PMC11244436 DOI: 10.3390/plants13131739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 06/18/2024] [Accepted: 06/18/2024] [Indexed: 07/14/2024]
Abstract
Sugarcane, a vital cash crop, contributes significantly to the world's sugar supply and raw materials for biofuel production, playing a significant role in the global sugar industry. However, sustainable productivity is severely hampered by biotic and abiotic stressors. Genetic engineering has been used to transfer useful genes into sugarcane plants to improve desirable traits and has emerged as a basic and applied research method to maintain growth and productivity under different adverse environmental conditions. However, the use of transgenic approaches remains contentious and requires rigorous experimental methods to address biosafety challenges. Clustered regularly interspaced short palindromic repeat (CRISPR) mediated genome editing technology is growing rapidly and may revolutionize sugarcane production. This review aims to explore innovative genetic engineering techniques and their successful application in developing sugarcane cultivars with enhanced resistance to biotic and abiotic stresses to produce superior sugarcane cultivars.
Collapse
Affiliation(s)
- Tanweer Kumar
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
- Sugar Crops Research Institute, Agriculture, Fisheries and Co-Operative Department, Charsadda Road, Mardan 23210, Khyber Pakhtunkhwa, Pakistan
| | - Jun-Gang Wang
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Sanya 572024, China
| | - Chao-Hua Xu
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
| | - Xin Lu
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
| | - Jun Mao
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
| | - Xiu-Qin Lin
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
| | - Chun-Yan Kong
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
| | - Chun-Jia Li
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
| | - Xu-Juan Li
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
| | - Chun-Yan Tian
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
| | - Mahmoud H. M. Ebid
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
- Sugar Crops Research Institute, Agricultural Research Center, Giza 12619, Egypt
| | - Xin-Long Liu
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
| | - Hong-Bo Liu
- National Key Laboratory for Tropical Crop Breeding, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, China; (T.K.)
| |
Collapse
|
3
|
Masoabi M, Burger NFV, Botha AM, Le Roux ML, Vlok M, Snyman S, Van der Vyver C. Overexpression of the Small Ubiquitin-Like Modifier protease OTS1 gene enhances drought tolerance in sugarcane (Saccharum spp. hybrid). PLANT BIOLOGY (STUTTGART, GERMANY) 2023; 25:1121-1141. [PMID: 37856570 DOI: 10.1111/plb.13585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/21/2023]
Abstract
Sugarcane is an economically important crop plant across the globe as it is the primary source of sugar and biofuel. Its growth and development are greatly influenced by water availability; therefore, in periods of water scarcity, yields are severely compromised. Small Ubiquitin-Like Modifier (SUMO) proteases play an important role in stress responses by regulating the SUMO-related post-translational modification of proteins. In an attempt to enhance drought tolerance in sugarcane, this crop was genetically transformed with a cysteine protease (OVERLY TOLERANT TO SALT-1; OTS1) from Arabidopsis thaliana using particle bombardment. Transgenic plants were analysed in terms of photosynthetic capacity, oxidative damage, antioxidant accumulation and the SUMO-enrich protein profile was assessed. Sugarcane transformed with the AtOTS1 gene displayed enhanced drought tolerance and delayed leaf senescence under water deficit compared to the untransformed wild type (WT). The AtOTS1 transgenic plants maintained a high relative moisture content and higher photosynthesis rate when compared to the WT. In addition, when the transgene was expressed at high levels, the transformed plants were able to maintain higher stomatal conductance and chlorophyl content under moderate stress compared to the WT. Under severe water deficit stress, the transgenic plants accumulated less malondialdehyde and maintained membrane integrity. SUMOylation of total protein and protease activity was lower in the AtOTS1 transformed plants compared to the WT, with several SUMO-enriched proteins exclusively expressed in the transgenics when exposed to water deficit stress. SUMOylation of proteins likely influenced various mechanisms contributing to enhanced drought tolerance in sugarcane.
Collapse
Affiliation(s)
- M Masoabi
- Institute for Plant Biotechnology, University of Stellenbosch, Stellenbosch, South Africa
| | - N F V Burger
- Department of Genetics, University of Stellenbosch, Stellenbosch, South Africa
| | - A-M Botha
- Department of Genetics, University of Stellenbosch, Stellenbosch, South Africa
| | - M L Le Roux
- Department of Genetics, University of Stellenbosch, Stellenbosch, South Africa
| | - M Vlok
- Mass Spectrometry Unit, Central Analytic Facility, Stellenbosch University, Stellenbosch, South Africa
| | - S Snyman
- South African Sugarcane Research Institute, Mount Edgecombe, South Africa
- School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - C Van der Vyver
- Institute for Plant Biotechnology, University of Stellenbosch, Stellenbosch, South Africa
| |
Collapse
|
4
|
Morgan BL, Kakeshpour T, Occhialini A, King G, Sichterman M, Harbison SA, Rigoulot SB, Brabazon H, Stewart CN, Lenaghan SC. Heterologous Expression of OtsB Increases Tuber Yield and Phenotypic Stability in Potato under Both Abiotic and Biotic Stresses. PLANTS (BASEL, SWITZERLAND) 2023; 12:3394. [PMID: 37836134 PMCID: PMC10574632 DOI: 10.3390/plants12193394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/14/2023] [Accepted: 09/22/2023] [Indexed: 10/15/2023]
Abstract
Climate-smart and sustainable crops are needed for the future. Engineering crops for tolerance of both abiotic and biotic stress is one approach. The accumulation of trehalose, controlled through trehalose-6-phosphate synthase (TPS) or OtsA and trehalose-6-phosphate phosphatase (TPP) or OtsB genes in microbes, is known to provide protection for many microbial and fungal species against abiotic stress. The effect of trehalose accumulation in plant species is less understood. Here, we studied the heterologous expression of Escherichia coli OtsB in potato (Solanum tuberosum var. 'Desiree') with regards to stress tolerance. The performance of transgenic lines was assessed in both growth chambers and greenhouse mesocosms. Overexpressing potato OtsB lines significantly increased resilience to heat, photoperiod, herbivory, and competition when compared with wildtype plants. Most strikingly, when subjected to high temperatures, transgenic lines exhibited a significantly lower reduction in tuber yield ranging from 40% to 77%, while wildtype plants experienced a 95% decrease in tuber yield. When exposed to competitors in a selected StSP3D::OtsB line, tuber yield was 1.6 times higher than wildtype. Furthermore, transgenic lines performed significantly better under low-nutrient regimes: under competition, yield increased by 1.5-fold. Together, these results demonstrate that increased trehalose has the potential to create more resistant and stable crop plants.
Collapse
Affiliation(s)
- Britany Lauren Morgan
- Center for Agricultural Synthetic Biology, University of Tennessee, Knoxville, TN 37996, USA; (B.L.M.); (A.O.); (M.S.); (S.A.H.); (H.B.)
| | - Tayebeh Kakeshpour
- Department of Plant Sciences, University of Tennessee, Knoxville, TN 37996, USA; (T.K.); (G.K.)
| | - Alessandro Occhialini
- Center for Agricultural Synthetic Biology, University of Tennessee, Knoxville, TN 37996, USA; (B.L.M.); (A.O.); (M.S.); (S.A.H.); (H.B.)
- Department of Plant Sciences, University of Tennessee, Knoxville, TN 37996, USA; (T.K.); (G.K.)
| | - Gabriella King
- Department of Plant Sciences, University of Tennessee, Knoxville, TN 37996, USA; (T.K.); (G.K.)
| | - Megan Sichterman
- Center for Agricultural Synthetic Biology, University of Tennessee, Knoxville, TN 37996, USA; (B.L.M.); (A.O.); (M.S.); (S.A.H.); (H.B.)
| | - Stacee A. Harbison
- Center for Agricultural Synthetic Biology, University of Tennessee, Knoxville, TN 37996, USA; (B.L.M.); (A.O.); (M.S.); (S.A.H.); (H.B.)
| | - Stephen B. Rigoulot
- Center for Agricultural Synthetic Biology, University of Tennessee, Knoxville, TN 37996, USA; (B.L.M.); (A.O.); (M.S.); (S.A.H.); (H.B.)
- Department of Plant Sciences, University of Tennessee, Knoxville, TN 37996, USA; (T.K.); (G.K.)
- Syngenta Crop Protection, LLC, 9 Davis Drive, Research Triangle Park, NC 27709, USA
| | - Holly Brabazon
- Center for Agricultural Synthetic Biology, University of Tennessee, Knoxville, TN 37996, USA; (B.L.M.); (A.O.); (M.S.); (S.A.H.); (H.B.)
- Department of Plant Sciences, University of Tennessee, Knoxville, TN 37996, USA; (T.K.); (G.K.)
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN 37996, USA
| | - Charles Neal Stewart
- Center for Agricultural Synthetic Biology, University of Tennessee, Knoxville, TN 37996, USA; (B.L.M.); (A.O.); (M.S.); (S.A.H.); (H.B.)
- Department of Plant Sciences, University of Tennessee, Knoxville, TN 37996, USA; (T.K.); (G.K.)
| | - Scott C. Lenaghan
- Center for Agricultural Synthetic Biology, University of Tennessee, Knoxville, TN 37996, USA; (B.L.M.); (A.O.); (M.S.); (S.A.H.); (H.B.)
- Department of Food Science, University of Tennessee, Knoxville, TN 37996, USA
| |
Collapse
|
5
|
Lloyd JR, Sonnewald U. Jens Kossmann 1963-2023 - a scientist with a passion for plant biology and people. FRONTIERS IN PLANT SCIENCE 2023; 14:1266078. [PMID: 37680354 PMCID: PMC10481953 DOI: 10.3389/fpls.2023.1266078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 08/10/2023] [Indexed: 09/09/2023]
Affiliation(s)
- James R. Lloyd
- Institute for Plant Biotechnology, Department of Genetics, Stellenbosch University, Stellenbosch, South Africa
| | - Uwe Sonnewald
- Division of Biochemistry, Department of Biology, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| |
Collapse
|
6
|
Wang X, Wang M, Huang Y, Zhu P, Qian G, Zhang Y, Liu Y, Zhou J, Li L. Genome-Wide Identification and Analysis of Stress Response of Trehalose-6-Phosphate Synthase and Trehalose-6-Phosphate Phosphatase Genes in Quinoa. Int J Mol Sci 2023; 24:ijms24086950. [PMID: 37108114 PMCID: PMC10138372 DOI: 10.3390/ijms24086950] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Saline-alkali stress seriously affects the yield and quality of crops, threatening food security and ecological security. Improving saline-alkali land and increasing effective cultivated land are conducive to sustainable agricultural development. Trehalose, a nonreducing disaccharide, is closely related to plant growth and development and stress response. Trehalose 6-phosphate synthase (TPS) and trehalose-6-phosphate phosphatase (TPP) are key enzymes catalyzing trehalose biosynthesis. To elucidate the effects of long-term saline-alkali stress on trehalose synthesis and metabolism, we conducted an integrated transcriptome and metabolome analysis. As a result, 13 TPS and 11 TPP genes were identified in quinoa (Chenopodium quinoa Willd.) and were named CqTPS1-13 and CqTPP1-11 according to the order of their Gene IDs. Through phylogenetic analysis, the CqTPS family is divided into two classes, and the CqTPP family is divided into three classes. Analyses of physicochemical properties, gene structures, conservative domains and motifs in the proteins, and cis-regulatory elements, as well as evolutionary relationships, indicate that the TPS and TPP family characteristics are highly conserved in quinoa. Transcriptome and metabolome analyses of the sucrose and starch metabolism pathway in leaves undergoing saline-alkali stress indicate that CqTPP and Class II CqTPS genes are involved in the stress response. Moreover, the accumulation of some metabolites and the expression of many regulatory genes in the trehalose biosynthesis pathway changed significantly, suggesting the metabolic process is important for the saline-alkali stress response in quinoa.
Collapse
Affiliation(s)
- Xiaoting Wang
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Mingyu Wang
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Yongshun Huang
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Peng Zhu
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Guangtao Qian
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Yiming Zhang
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Yuqi Liu
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Jingwen Zhou
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Lixin Li
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| |
Collapse
|
7
|
Rojas BE, Tonetti T, Figueroa CM. Trehalose 6-phosphate metabolism in C 4 species. CURRENT OPINION IN PLANT BIOLOGY 2023; 72:102347. [PMID: 36806837 DOI: 10.1016/j.pbi.2023.102347] [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: 11/01/2022] [Revised: 01/09/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
Trehalose 6-phosphate (Tre6P), the intermediate of trehalose biosynthesis, is an essential signal metabolite in plants, linking growth and development to carbon status. Our current understanding of Tre6P metabolism and signaling pathways in plants is based almost entirely on studies performed with Arabidopsis thaliana, a model plant that performs C3 photosynthesis. Conversely, our knowledge on the molecular mechanisms involved in Tre6P regulation of carbon partitioning and metabolism in C4 plants is scarce. This topic is especially relevant due to the agronomic importance of crops performing C4 photosynthesis, such as maize, sorghum and sugarcane. In this review, we focused our attention on recent developments related to Tre6P metabolism in C4 species and raised some open questions that should be addressed in the near future to improve the yield of economically important crops.
Collapse
Affiliation(s)
- Bruno E Rojas
- Instituto de Agrobiotecnología del Litoral, UNL, CONICET, FBCB, Santa Fe, Argentina
| | - Tomás Tonetti
- Instituto de Agrobiotecnología del Litoral, UNL, CONICET, FBCB, Santa Fe, Argentina
| | - Carlos M Figueroa
- Instituto de Agrobiotecnología del Litoral, UNL, CONICET, FBCB, Santa Fe, Argentina.
| |
Collapse
|
8
|
Gao J, Zhang Y, Xu C, Wang X, Wang P, Huang S. Abscisic acid collaborates with lignin and flavonoid to improve pre-silking drought tolerance by tuning stem elongation and ear development in maize (Zea mays L.). THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 114:437-454. [PMID: 36786687 DOI: 10.1111/tpj.16147] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 02/08/2023] [Indexed: 05/10/2023]
Abstract
Drought is a major abiotic stress reducing maize (Zea mays) yield worldwide especially before and during silking. The mechanism underlying drought tolerance in maize and the roles of different organs have not been elucidated. Hence, we conducted field trials under pre-silking drought conditions using two maize genotypes: FM985 (drought-tolerant) and ZD958 (drought-sensitive). The two genotypes did not differ in plant height, grain number, and yield under control conditions. However, the grain number per ear and the yield of FM985 were 38.1 and 35.1% higher and plants were 17.6% shorter than ZD958 under drought conditions. More 13 C photosynthates were transported to the ear in FM985 than in ZD958, which increased floret fertility and grain number. The number of differentially expressed genes was much higher in stem than in other organs. Stem-ear interactions are key determinants of drought tolerance, in which expression of genes related to abscisic acid, lignin, and flavonoid biosynthesis and carbon metabolism in the stem was induced by drought, which inhibited stem elongation and promoted assimilate allocation to the ear in FM985. In comparison with ZD958, the activities of trehalose 6-phosphate phosphatase and sucrose non-fermentation-associated kinase 1 were higher in the stem and lower in the kernel of FM985, which facilitated kernel formation. These results reveal that, beyond the ear response, stem elongation is involved in the whole process of drought tolerance before silking. Abscisic acid together with trehalose 6-phosphate, lignin, and flavonoid suppresses stem elongation and allocates assimilates into the ear, providing a novel and systematic regulatory pathway for drought tolerance in maize.
Collapse
Affiliation(s)
- Jia Gao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
- Center for Agricultural Water Research in China, China Agricultural University, Beijing, 100083, China
| | - Yingjun Zhang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Chenchen Xu
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Xin Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Pu Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Shoubing Huang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
- Scientific Observation and Experimental Station of Crop High Efficient Use of Water in Wuqiao, Ministry of Agriculture and Rural Affairs, Wuqiao, 061802, China
- Innovation Center of Agricultural Technology for Lowland Plain of Hebei, Wuqiao, 061802, China
| |
Collapse
|
9
|
Enhancement of healthful novel sugar contents in genetically engineered sugarcane juice integrated with molecularly characterized ThSyGII (CEMB-SIG2). Sci Rep 2022; 12:18621. [PMID: 36329173 PMCID: PMC9633787 DOI: 10.1038/s41598-022-23130-y] [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: 03/03/2022] [Accepted: 10/25/2022] [Indexed: 11/06/2022] Open
Abstract
Enhancement of sugar contents and yielding healthful sugar products from sugarcane demand high profile scientific strategies. Previous efforts to foster manipulation in metabolic pathways or triggering sugar production through combating abiotic stresses fail to yield high sugar recovery in Saccharum officinarum L. Novel sucrose isomers trehalulose (TH) and isomaltulose (IM) are naturally manufactured in microbial sources. In pursuance of novel scientific methodology, codon optimized sucrose isomerase gene, Trehalulose synthase gene II(CEMB-SIG2) cloned under dual combined stem specific constitutive promoters in pCAMBIA1301 expression vector integrated with Vacuole targeted signal peptide (VTS) to concentrate gene product into the vacuole. The resultant mRNA expression obtained by Real Time PCR validated extremely increased transgene expression in sugarcane culms than leaf tissues. Overall sugar estimation from transgenic sugarcane lines was executed through refractometer. HPLC based quantifications of Trehalulose (TH) alongside different internodes of transgenic sugarcane confirmed the enhancement of boosted sugar concentrations in mature sugarcane culms. Trehalulose synthase gene II receptive sugarcane lines indicated the unprecedented impressions of duly combined constitutive stem regulated promoters. Transgenic sugarcane lines produce highest sugar recovery percentages, 14.9% as compared to control lines (8.5%). The increased sugar recovery percentage in transgenic sugarcane validated the utmost performance and expression of ThSyGII gene .High Profile Liquid chromatography based sugar contents estimation of Trehalulose (TH) and Isomaltulose (IM) yielded unprecedented improvement in the whole sugar recovery percentage as compared to control lines..
Collapse
|
10
|
Qu C, Li W, Yang Q, Xia Y, Lu P, Hu M. Metabolic mechanism of nitrogen modified atmosphere storage on delaying quality deterioration of rice grains. Food Chem X 2022; 16:100519. [DOI: 10.1016/j.fochx.2022.100519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/04/2022] [Accepted: 11/15/2022] [Indexed: 11/21/2022] Open
|
11
|
Zhou B, Fang Y, Xiao X, Yang J, Qi J, Qi Q, Fan Y, Tang C. Trehalose 6-Phosphate/SnRK1 Signaling Participates in Harvesting-Stimulated Rubber Production in the Hevea Tree. PLANTS (BASEL, SWITZERLAND) 2022; 11:2879. [PMID: 36365332 PMCID: PMC9655858 DOI: 10.3390/plants11212879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/14/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Trehalose 6-phosphate (T6P), the intermediate of trehalose biosynthesis and a signaling molecule, affects crop yield via targeting sucrose allocation and utilization. As there have been no reports of T6P signaling affecting secondary metabolism in a crop plant, the rubber tree Hevea brasiliensis serves as an ideal model in this regard. Sucrose metabolism critically influences the productivity of natural rubber, a secondary metabolite of industrial importance. Here, we report on the characterization of the T6P synthase (TPS) gene family and the T6P/SNF1-related protein kinase1 (T6P/SnRK1) signaling components in Hevea laticifers under tapping (rubber harvesting), an agronomic manipulation that itself stimulates rubber production. A total of fourteen TPS genes were identified, among which a class II TPS gene, HbTPS5, seemed to have evolved with a function specialized in laticifers. T6P and trehalose increased when the trees were tapped, this being consistent with the observed enhanced activities of TPS and T6P phosphatase (TPP) and expression of an active TPS-encoding gene, HbTPS1. On the other hand, SnRK1 activities decreased, suggesting the inhibition of elevated T6P on SnRK1. Expression profiles of the SnRK1 marker genes coincided with elevated T6P and depressed SnRK1. Interestingly, HbTPS5 expression decreased significantly with the onset of tapping, suggesting a regulatory function in the T6P pathway associated with latex production in laticifers. In brief, transcriptional, enzymatic, and metabolic evidence supports the participation of T6P/SnRK1 signaling in rubber formation, thus providing a possible avenue to increasing the yield of a valuable secondary metabolite by targeting T6P in specific cells.
Collapse
Affiliation(s)
- Binhui Zhou
- College of Tropical Crops, Hainan University, Haikou 570228, China
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Yongjun Fang
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Xiaohu Xiao
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Jianghua Yang
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Jiyan Qi
- College of Tropical Crops, Hainan University, Haikou 570228, China
- Natural Rubber Cooperative Innovation Center of Hainan Province and Ministry of Education of PRC, Haikou 570228, China
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Qi Qi
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China
| | - Yujie Fan
- College of Tropical Crops, Hainan University, Haikou 570228, China
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Chaorong Tang
- College of Tropical Crops, Hainan University, Haikou 570228, China
- Natural Rubber Cooperative Innovation Center of Hainan Province and Ministry of Education of PRC, Haikou 570228, China
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| |
Collapse
|