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Zhu X, Chen A, Butler NM, Zeng Z, Xin H, Wang L, Lv Z, Eshel D, Douches DS, Jiang J. Molecular dissection of an intronic enhancer governing cold-induced expression of the vacuolar invertase gene in potato. THE PLANT CELL 2024; 36:1985-1999. [PMID: 38374801 PMCID: PMC11062429 DOI: 10.1093/plcell/koae050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 01/12/2024] [Accepted: 02/07/2024] [Indexed: 02/21/2024]
Abstract
Potato (Solanum tuberosum) is the third most important food crop in the world. Potato tubers must be stored at cold temperatures to minimize sprouting and losses due to disease. However, cold temperatures strongly induce the expression of the potato vacuolar invertase gene (VInv) and cause reducing sugar accumulation. This process, referred to as "cold-induced sweetening," is a major postharvest problem for the potato industry. We discovered that the cold-induced expression of VInv is controlled by a 200 bp enhancer, VInvIn2En, located in its second intron. We identified several DNA motifs in VInvIn2En that bind transcription factors involved in the plant cold stress response. Mutation of these DNA motifs abolished VInvIn2En function as a transcriptional enhancer. We developed VInvIn2En deletion lines in both diploid and tetraploid potato using clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated nuclease 9 (Cas9)-mediated gene editing. VInv transcription in cold-stored tubers was significantly reduced in the deletion lines. Interestingly, the VInvIn2En sequence is highly conserved among distantly related Solanum species, including tomato (Solanum lycopersicum) and other non-tuber-bearing species. We conclude that the VInv gene and the VInvIn2En enhancer have adopted distinct roles in the cold stress response in tubers of tuber-bearing Solanum species.
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Affiliation(s)
- Xiaobiao Zhu
- Anhui Province Key Laboratory of Horticultural Crop Quality Biology, School of Horticulture, Anhui Agricultural University, Hefei 230036, Anhui Province, China
- Department of Horticulture, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Airu Chen
- Anhui Province Key Laboratory of Horticultural Crop Quality Biology, School of Horticulture, Anhui Agricultural University, Hefei 230036, Anhui Province, China
| | - Nathaniel M Butler
- Department of Horticulture, University of Wisconsin-Madison, Madison, WI 53706, USA
- Vegetable Crops Research Unit, United States Department of Agriculture-Agricultural Research Service, Madison, WI 53706, USA
| | - Zixian Zeng
- Department of Horticulture, University of Wisconsin-Madison, Madison, WI 53706, USA
- Department of Biological Science, College of Life Sciences, Sichuan Normal University, Chengdu 610101, Sichuan Province, China
- Plant Functional Genomics and Bioinformatics Research Center, Sichuan Normal University, Chengdu 610101, Sichuan Province, China
| | - Haoyang Xin
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
| | - Lixia Wang
- Anhui Province Key Laboratory of Horticultural Crop Quality Biology, School of Horticulture, Anhui Agricultural University, Hefei 230036, Anhui Province, China
| | - Zhaoyan Lv
- Anhui Province Key Laboratory of Horticultural Crop Quality Biology, School of Horticulture, Anhui Agricultural University, Hefei 230036, Anhui Province, China
| | - Dani Eshel
- Department of Postharvest Science, The Volcani Institute, ARO, Rishon LeZion 50250, Israel
| | - David S Douches
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA
- Michigan State University AgBioResearch, East Lansing, MI 48824, USA
| | - Jiming Jiang
- Department of Horticulture, University of Wisconsin-Madison, Madison, WI 53706, USA
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
- Michigan State University AgBioResearch, East Lansing, MI 48824, USA
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
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Liu T, Kawochar MA, Begum S, Wang E, Zhou T, Jing S, Liu T, Yu L, Nie B, Song B. Potato tonoplast sugar transporter 1 controls tuber sugar accumulation during postharvest cold storage. HORTICULTURE RESEARCH 2023; 10:uhad035. [PMID: 37799627 PMCID: PMC10548405 DOI: 10.1093/hr/uhad035] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 02/23/2023] [Indexed: 10/07/2023]
Abstract
Cold-induced sweetening (CIS), the undesirable sugar accumulation in cold-stored potato (Solanum tuberosum L.) tubers, is a severe postharvest issue in the potato processing industry. Although the process of sucrose hydrolysis by vacuolar invertase during potato CIS is well understood, there is limited knowledge about the transportation of sucrose from the cytosol to the vacuole during postharvest cold storage. Here, we report that among the three potato tonoplast sugar transporters (TSTs), StTST1 exhibits the highest expression in tubers during postharvest cold storage. Subcellular localization analysis demonstrates that StTST1 is a tonoplast-localized protein. StTST1 knockdown decreases reducing sugar accumulation in tubers during low-temperature storage. Compared to wild-type, potato chips produced from StTST1-silenced tubers displayed significantly lower acrylamide levels and lighter color after cold storage. Transcriptome analysis manifests that suppression of StTST1 promotes starch synthesis and inhibits starch degradation in cold-stored tubers. We further establish that the increased sucrose content in the StTST1-silenced tubers might cause a decrease in the ABA content, thereby inhibiting the ABA-signaling pathway. We demonstrate that the down-regulation of β-amylase StBAM1 in StTST1-silenced tubers might be directly controlled by ABA-responsive element-binding proteins (AREBs). Altogether, we have shown that StTST1 plays a critical role in sugar accumulation and starch metabolism regulation during postharvest cold storage. Thus, our findings provide a new strategy to improve the frying quality of cold-stored tubers and reduce the acrylamide content in potato chips.
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Affiliation(s)
- Tengfei Liu
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070 China
| | - Md Abu Kawochar
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070 China
- Bangladesh Agricultural Research Institute, Joydebpur, Gazipur 1701, Bangladesh
| | - Shahnewaz Begum
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070 China
- Bangladesh Agricultural Research Institute, Joydebpur, Gazipur 1701, Bangladesh
| | - Enshuang Wang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070 China
| | - Tingting Zhou
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070 China
| | - Shenglin Jing
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070 China
| | - Tiantian Liu
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070 China
| | - Liu Yu
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070 China
| | - Bihua Nie
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070 China
| | - Botao Song
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070 China
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Jaiswal S, Paul K, Raman KV, Tyagi S, Saakre M, Tilgam J, Bhattacharjee S, Vijayan J, Mondal KK, Sreevathsa R, Pattanayak D. Amelioration of cold-induced sweetening in potato by RNAi mediated silencing of StUGPase encoding UDP-glucose pyrophosphorylase. FRONTIERS IN PLANT SCIENCE 2023; 14:1133029. [PMID: 36875591 PMCID: PMC9981964 DOI: 10.3389/fpls.2023.1133029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Cold-induced sweetening (CIS) is an unwanted physiological phenomenon in which reducing sugars (RS) get accumulated in potato (Solanum tuberosum) upon cold storage. High RS content makes potato commercially unsuitable for processing due to the unacceptable brown color in processed products like chips, fries, etc., and the production of a potential carcinogen, acrylamide. UDP-glucose pyrophosphorylase (UGPase) catalyzes the synthesis of UDP-glucose towards the synthesis of sucrose and is also involved in the regulation of CIS in potato. The objective of the present work was RNAi-mediated downregulation of the StUGPase expression level in potato for the development of CIS tolerant potato. Hairpin RNA (hpRNA) gene construct was developed by placing UGPase cDNA fragment in sense and antisense orientation intervened by GBSS intron. Internodal stem explants (cv. Kufri Chipsona-4) were transformed with hpRNA gene construct, and 22 transgenic lines were obtained by PCR screening of putative transformants. Four transgenic lines showed the highest level of RS content reduction following 30 days of cold storage, with reductions in sucrose and RS (glucose & fructose) levels of up to 46% and 57.5%, respectively. Cold stored transgenic potato of these four lines produced acceptable chip colour upon processing. The selected transgenic lines carried two to five copies of the transgene. Northern hybridization revealed an accumulation of siRNA with a concomitant decrease in the StUGPase transcript level in these selected transgenic lines. The present work demonstrates the efficacy of StUGPase silencing in controlling CIS in potato, and the strategy can be employed for the development of CIS tolerant potato varieties.
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Affiliation(s)
- Sandeep Jaiswal
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- Post Graduate (PG) School, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Krishnayan Paul
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- Post Graduate (PG) School, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - K. Venkat Raman
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
| | - Saurabh Tyagi
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
| | - Manjesh Saakre
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- Post Graduate (PG) School, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Jyotsana Tilgam
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- Post Graduate (PG) School, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Sougata Bhattacharjee
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- Post Graduate (PG) School, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Joshitha Vijayan
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
| | - Kalyan Kumar Mondal
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
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Liu C, Hu S, Liu S, Shi W, Xie D, Chen Q, Sun H, Song L, Li Z, Jiang R, Lv D, Wang J, Liu X. Functional characterization of a cell wall invertase inhibitor StInvInh1 revealed its involvement in potato microtuber size in vitro. FRONTIERS IN PLANT SCIENCE 2022; 13:1015815. [PMID: 36262645 PMCID: PMC9574400 DOI: 10.3389/fpls.2022.1015815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
Cell wall invertase (CWI) is as an essential coordinator in carbohydrate partitioning and sink strength determination, thereby playing key roles in plant development. Emerging evidence revealed that the subtle regulation of CWI activity considerably depends on the post-translational mechanism by their inhibitors (INHs). In our previous research, two putative INHs (StInvInh1 and StInvInh3) were expected as targets of CWI in potato (Solanum tubersum), a model species of tuberous plants. Here, transcript analysis revealed that StInvInh1 showed an overall higher expression than StInhInh3 in all tested organs. Then, StInvInh1 was further selected to study. In accordance with this, the activity of StInvInh1 promoter increased with the development of leaves in plantlets but decreased with the development of microtubers in vitro and mainly appeared in vascular bundle. The recombinant protein StInvInh1 displayed inhibitory activities on the extracted CWI in vitro and StInvInh1 interacted with a CWI StcwINV2 in vivo by bimolecular fluorescence complementation. Furthermore, silencing StInvInh1 in potato dramatically increased the CWI activity without changing activities of vacuolar and cytoplasmic invertase, indicating that StInvInh1 functions as a typical INH of CWI. Releasing CWI activity in StInvInh1 RNA interference transgenic potato led to improvements in potato microtuber size in coordination with higher accumulations of dry matter in vitro. Taken together, these findings demonstrate that StInvInh1 encodes an INH of CWI and regulates the microtuber development process through fine-tuning apoplastic sucrose metabolism, which may provide new insights into tuber development.
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Recent Advances in Molecular Improvement for Potato Tuber Traits. Int J Mol Sci 2022; 23:ijms23179982. [PMID: 36077378 PMCID: PMC9456189 DOI: 10.3390/ijms23179982] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022] Open
Abstract
Potato is an important crop due to its nutritional value and high yield potential. Improving the quality and quantity of tubers remains one of the most important breeding objectives. Genetic mapping helps to identify suitable markers for use in the molecular breeding, and combined with transgenic approaches provides an efficient way for gaining desirable traits. The advanced plant breeding tools and molecular techniques, e.g., TALENS, CRISPR-Cas9, RNAi, and cisgenesis, have been successfully used to improve the yield and nutritional value of potatoes in an increasing world population scenario. The emerging methods like genome editing tools can avoid incorporating transgene to keep the food more secure. Multiple success cases have been documented in genome editing literature. Recent advances in potato breeding and transgenic approaches to improve tuber quality and quantity have been summarized in this review.
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Shi W, Ma Q, Yin W, Liu T, Song Y, Chen Y, Song L, Sun H, Hu S, Liu T, Jiang R, Lv D, Song B, Wang J, Liu X. The transcription factor StTINY3 enhances cold-induced sweetening resistance by coordinating starch resynthesis and sucrose hydrolysis in potato. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:4968-4980. [PMID: 35511088 DOI: 10.1093/jxb/erac171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 04/27/2022] [Indexed: 06/14/2023]
Abstract
The accumulation of reducing sugars in cold-stored tubers, known as cold-induced sweetening (CIS), negatively affects potato processing quality. The starch to sugar interconversion pathways that are altered in cold-stored CIS tubers have been elucidated, but the mechanism that regulates them remains largely unknown. This study identified a CBF/DREB transcription factor (StTINY3) that enhances CIS resistance by both activating starch biosynthesis and repressing the hydrolysis of sucrose to reducing sugars in detached cold-stored tubers. Silencing StTINY3 in a CIS-resistant genotype decreased CIS resistance, while overexpressing StTINY3 in a CIS-sensitive genotype increased CIS resistance, and altering StTINY3 expression was associated with expression changes in starch resynthesis-related genes. We showed first that overexpressing StTINY3 inhibited sucrose hydrolysis by enhancing expression of the invertase inhibitor gene StInvInh2, and second that StTINY3 promoted starch resynthesis by up-regulating a large subunit of the ADP-glucose pyrophosphorylase gene StAGPaseL3, and the glucose-6-phosphate transporter gene StG6PT2. Using electrophoretic mobility shift assays, we revealed that StTINY3 is a nuclear-localized transcriptional activator that directly binds to the dehydration-responsive element/CRT cis-element in the promoters of StInvInh2 and StAGPaseL3. Taken together, these findings established that StTINY3 influences CIS resistance in cold-stored tubers by coordinately modulating the starch to sugar interconversion pathways and is a good target for improving potato processing quality.
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Affiliation(s)
- Weiling Shi
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education. Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, PR China
| | - Qiuqin Ma
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Wang Yin
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Tiantian Liu
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education. Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, PR China
| | - Yuhao Song
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Yuanya Chen
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Linjin Song
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Hui Sun
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Shuting Hu
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Tengfei Liu
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education. Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, PR China
| | - Rui Jiang
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Dianqiu Lv
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Botao Song
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education. Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, PR China
| | - Jichun Wang
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Xun Liu
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
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Coculo D, Lionetti V. The Plant Invertase/Pectin Methylesterase Inhibitor Superfamily. FRONTIERS IN PLANT SCIENCE 2022; 13:863892. [PMID: 35401607 PMCID: PMC8990755 DOI: 10.3389/fpls.2022.863892] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/02/2022] [Indexed: 05/08/2023]
Abstract
Invertases (INVs) and pectin methylesterases (PMEs) are essential enzymes coordinating carbohydrate metabolism, stress responses, and sugar signaling. INVs catalyzes the cleavage of sucrose into glucose and fructose, exerting a pivotal role in sucrose metabolism, cellulose biosynthesis, nitrogen uptake, reactive oxygen species scavenging as well as osmotic stress adaptation. PMEs exert a dynamic control of pectin methylesterification to manage cell adhesion, cell wall porosity, and elasticity, as well as perception and signaling of stresses. INV and PME activities can be regulated by specific proteinaceous inhibitors, named INV inhibitors (INVIs) and PME Inhibitors (PMEIs). Despite targeting different enzymes, INVIs and PMEIs belong to the same large protein family named "Plant Invertase/Pectin Methylesterase Inhibitor Superfamily." INVIs and PMEIs, while showing a low aa sequence identity, they share several structural properties. The two inhibitors showed mainly alpha-helices in their secondary structure and both form a non-covalent 1:1 complex with their enzymatic counterpart. Some PMEI members are organized in a gene cluster with specific PMEs. Although the most important physiological information was obtained in Arabidopsis thaliana, there are now several characterized INVI/PMEIs in different plant species. This review provides an integrated and updated overview of this fascinating superfamily, from the specific activity of characterized isoforms to their specific functions in plant physiology. We also highlight INVI/PMEIs as biotechnological tools to control different aspects of plant growth and defense. Some isoforms are discussed in view of their potential applications to improve industrial processes. A review of the nomenclature of some isoforms is carried out to eliminate confusion about the identity and the names of some INVI/PMEI member. Open questions, shortcoming, and opportunities for future research are also presented.
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Affiliation(s)
| | - Vincenzo Lionetti
- Dipartimento di Biologia e Biotecnologie “C. Darwin”, Sapienza Università di Roma, Rome, Italy
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Chen C, Cui X, Zhang P, Wang Z, Zhang J. Expression of the pyrroline-5-carboxylate reductase (P5CR) gene from the wild grapevine Vitis yeshanensis promotes drought resistance in transgenic Arabidopsis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 168:188-201. [PMID: 34649022 DOI: 10.1016/j.plaphy.2021.10.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 09/29/2021] [Accepted: 10/01/2021] [Indexed: 06/13/2023]
Abstract
Proline accumulation is one of the most common reactions in plants under drought stress. Pyrroline-5-carboxylate reductase (P5CR) is the final enzyme and plays an important role in proline biosynthesis. The Chinese wild grapevine Vitis yeshanensis J.X. Chen accession 'Yanshan-1' is highly resistant to drought, but the genetic and molecular mechanisms associated with this resistance have not been elucidated. Here, we cloned a VyP5CR gene (Genbank ID: MZ226960) from 'Yanshan-1', and evaluated its transcriptional response to drought, NaCl, cold, as well as exogenous ABA, MeJA and SA. Tissue specific analysis showed that VyP5CR could be expressed in various organs and was highly expressed in roots. To gain insight into the roles of VyP5CR, we overexpressed VyP5CR in Arabidopsis thaliana (Arabidopsis). Transgenic Arabidopsis plants expressing VyP5CR showed enhanced survival rate, smaller stomata in response to severe drought, as well as stronger root growth on a medium containing mannitol. Under drought stress, VyP5CR-OE plants showed reduced levels of MDA, H2O2 and O2-, and higher proline content, SOD and POD activity. In addition, VyP5CR-OE plants showed increased induction of the drought-related genes COR15A, COR47, DREB2A, KIN1, NCED3 and RD29A. Taken together, these experiments reveal that VyP5CR can promote the drought tolerance of transgenic Arabidopsis. Besides, an interacting protein with VyP5CR, VyCSN5B (COP9 signalosome complex subunit 5b), was screened out by yeast two-hybrid and verified by bimolecular fluorescence complementation assay.
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Affiliation(s)
- Chengcheng Chen
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - Xiaoyue Cui
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - Pingying Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - Zheng Wang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - Jianxia Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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9
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Shi W, Song Y, Liu T, Ma Q, Yin W, Shen Y, Liu T, Jiang C, Zhang K, Lv D, Song B, Wang J, Liu X. StRAP2.3, an ERF-VII transcription factor, directly activates StInvInh2 to enhance cold-induced sweetening resistance in potato. HORTICULTURE RESEARCH 2021; 8:82. [PMID: 33790269 PMCID: PMC8012585 DOI: 10.1038/s41438-021-00522-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 01/26/2021] [Accepted: 02/06/2021] [Indexed: 05/03/2023]
Abstract
Potato invertase inhibitor (StInvInh2) positively regulates cold-induced sweetening (CIS) resistance by inhibiting the activity of vacuolar invertase. The distinct expression patterns of StInvInh2 have been thoroughly characterized in different potato genotypes, but the related CIS ability has not been characterized. The understanding of the regulatory mechanisms that control StInvInh2 transcription is unclear. In this study, we identified an ERF-VII transcription factor, StRAP2.3, that directly regulates StInvInh2 to positively modulate CIS resistance. Acting as a nuclear-localized transcriptional activator, StRAP2.3 directly binds the ACCGAC cis-element in the promoter region of StInvInh2, enabling promoter activity. Overexpression of StRAP2.3 in CIS-sensitive potato tubers induced StInvInh2 mRNA abundance and increased CIS resistance. In contrast, silencing StRAP2.3 in CIS-resistant potato tubers repressed the expression of StInvInh2 and decreased CIS resistance. We conclude that cold-responsive StInvInh2 is due to the binding of StRAP2.3 to the ACCGAC cis-element in the promoter region of StInvInh2. Overall, these findings indicate that StRAP2.3 directly regulates StInvInh2 to positively modulate CIS resistance, which may provide a strategy to improve the processing quality of potatoes.
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Affiliation(s)
- Weiling Shi
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops; College of Agronomy and Biotechnology, Southwest University, 400715, Chongqing, People's Republic of China
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education; Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, 430070, Wuhan, People's Republic of China
| | - Yuhao Song
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops; College of Agronomy and Biotechnology, Southwest University, 400715, Chongqing, People's Republic of China
| | - Tiantian Liu
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education; Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, 430070, Wuhan, People's Republic of China
| | - Qiuqin Ma
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops; College of Agronomy and Biotechnology, Southwest University, 400715, Chongqing, People's Republic of China
| | - Wang Yin
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops; College of Agronomy and Biotechnology, Southwest University, 400715, Chongqing, People's Republic of China
| | - Yuchen Shen
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops; College of Agronomy and Biotechnology, Southwest University, 400715, Chongqing, People's Republic of China
| | - Tengfei Liu
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education; Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, 430070, Wuhan, People's Republic of China
| | - Chunyan Jiang
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops; College of Agronomy and Biotechnology, Southwest University, 400715, Chongqing, People's Republic of China
| | - Kai Zhang
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops; College of Agronomy and Biotechnology, Southwest University, 400715, Chongqing, People's Republic of China
| | - Dianqiu Lv
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops; College of Agronomy and Biotechnology, Southwest University, 400715, Chongqing, People's Republic of China
| | - Botao Song
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education; Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, 430070, Wuhan, People's Republic of China.
| | - Jichun Wang
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops; College of Agronomy and Biotechnology, Southwest University, 400715, Chongqing, People's Republic of China.
| | - Xun Liu
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops; College of Agronomy and Biotechnology, Southwest University, 400715, Chongqing, People's Republic of China.
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10
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Wang X, Chen Y, Jiang S, Xu F, Wang H, Wei Y, Shao X. PpINH1, an invertase inhibitor, interacts with vacuolar invertase PpVIN2 in regulating the chilling tolerance of peach fruit. HORTICULTURE RESEARCH 2020; 7:168. [PMID: 33082974 PMCID: PMC7527553 DOI: 10.1038/s41438-020-00389-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 07/22/2020] [Accepted: 07/27/2020] [Indexed: 05/03/2023]
Abstract
Sucrose metabolism, particularly the decomposition of sucrose by invertase, plays a central role in plant responses to cold stress. Invertase inhibitors (INHs) evolved in higher plants as essential regulators of sucrose metabolism. By limiting invertase activity, INHs keep cellular sugar levels elevated, which provides enhanced protection to plants under stress. Our results showed that the expression of PpVIN2, the only vacuolar invertase (VIN) gene in peach fruit sensitive to chilling temperatures, increases significantly during cold storage, while VIN enzyme activity increases more modestly. We also found that peach fruit transiently overexpressing PpINH1 had decreased VIN activity. Interactions of PpINH1 and PpVIN2 with recombinant proteins were shown by yeast two-hybrid assays and bimolecular fluorescence complementation assays, as well as in vitro. During cold storage, trehalose-treated peach fruit had significantly increased PpINH1 expression, decreased VIN enzyme activity, and significantly higher sucrose content than did untreated fruit. As a result, the treated fruit had enhanced resistance to chilling injury. Collectively, our data show that the post-translational repression of VIN enzyme activity by PpINH1 helps maintain sucrose levels in peach fruit during cold storage, thereby improving resistance to chilling injury.
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Affiliation(s)
- Xingxing Wang
- College of Food and Pharmaceutical Sciences, Ningbo University, 315800 Ningbo, China
| | - Yi Chen
- College of Food and Pharmaceutical Sciences, Ningbo University, 315800 Ningbo, China
| | - Shu Jiang
- College of Food and Pharmaceutical Sciences, Ningbo University, 315800 Ningbo, China
| | - Feng Xu
- College of Food and Pharmaceutical Sciences, Ningbo University, 315800 Ningbo, China
| | - Hongfei Wang
- College of Food and Pharmaceutical Sciences, Ningbo University, 315800 Ningbo, China
| | - Yingying Wei
- College of Food and Pharmaceutical Sciences, Ningbo University, 315800 Ningbo, China
| | - Xingfeng Shao
- College of Food and Pharmaceutical Sciences, Ningbo University, 315800 Ningbo, China
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11
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Liu X, Chen L, Shi W, Xu X, Li Z, Liu T, He Q, Xie C, Nie B, Song B. Comparative transcriptome reveals distinct starch-sugar interconversion patterns in potato genotypes contrasting for cold-induced sweetening capacity. Food Chem 2020; 334:127550. [PMID: 32693335 DOI: 10.1016/j.foodchem.2020.127550] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 12/18/2022]
Abstract
Potato accumulates large amounts of soluble sugar during cold storage periods. However, a system based understanding of this process is still largely unknown. Here, we compared the dynamic cold-responded transcriptome of genotypes between cold-induced sweetening resistant (CIS-R) and cold-induced sweetening sensitive (CIS-S) in tubers. Comparative transcriptome revealed that activating the pathways of starch degradation, sucrose synthesis and hydrolysis could be common strategies in response to cold in both genotypes. Moreover, the variation in sugar accumulation between genotypes may be due to genetic differences in cold response, which could be mainly explained: CIS-R genotype was active in starch synthesis and attenuated in sucrose hydrolysis by promoting the coordinate expression of aseries ofgenes involved in starch-sugar interconversion. Additionally, transcription factors, the candidate master regulators of starch-sugar interconversion, were discussed. Taken together, this work has provided an avenue for studying the mechanism involved in the regulation of the CIS resistance.
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Affiliation(s)
- Xun Liu
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, PR China; College of Agronomy and Biotechnology, Southwest University, Key Laboratory of Biology and Genetic Improvement for Tuber and Root Crops in Chongqing, Chongqing 400715, PR China.
| | - Lin Chen
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, PR China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China), Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, PR China
| | - Weiling Shi
- College of Agronomy and Biotechnology, Southwest University, Key Laboratory of Biology and Genetic Improvement for Tuber and Root Crops in Chongqing, Chongqing 400715, PR China
| | - Xuan Xu
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Zhijing Li
- College of Agronomy and Biotechnology, Southwest University, Key Laboratory of Biology and Genetic Improvement for Tuber and Root Crops in Chongqing, Chongqing 400715, PR China
| | - Tengfei Liu
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Qin He
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Conghua Xie
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Bihua Nie
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Botao Song
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, PR China.
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12
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de Araújo NO, Véras MLM, Santos MNDS, de Araújo FF, Tello JPDJ, Finger FL. Sucrose degradation pathways in cold-induced sweetening and its impact on the non-enzymatic darkening in sweet potato root. Food Chem 2020; 312:125904. [DOI: 10.1016/j.foodchem.2019.125904] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 11/27/2022]
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13
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Yang W, Chen S, Cheng Y, Zhang N, Ma Y, Wang W, Tian H, Li Y, Hussain S, Wang S. Cell wall/vacuolar inhibitor of fructosidase 1 regulates ABA response and salt tolerance in Arabidopsis. PLANT SIGNALING & BEHAVIOR 2020; 15:1744293. [PMID: 32213123 PMCID: PMC7194370 DOI: 10.1080/15592324.2020.1744293] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
ABA regulates abiotic stress tolerance in plants via activating/repressing gene expression. However, the functions of many ABA response genes remained unknown. C/VIFs are proteinaceous inhibitors of the CWI and VI invertases. We report here the involvement of C/VIF1 in regulating ABA response and salt tolerance in Arabidopsis. We found that the expression level of C/VIF1 was increased in response to ABA treatment. By using CRISPR/Cas9 gene editing, we generated transgene-free c/vif1 mutants. We also generated C/VIF1 overexpression plants by expressing C/VIF1 under the control of the 35S promoter. We examined ABA response of the 35S:C/VIF1 transgenic plants and the c/vif1 mutants by using seed germination and seedling greening assays, and found that the 35S:C/VIF1 transgenic plants showed an enhanced sensitivity to ABA treatment in both assays. On the other hand, the c/vif1 mutants showed slight enhanced tolerance to ABA only at the early stage of germination. We also found that salt tolerance was reduced in the 35S:C/VIF1 transgenic plants in seed germination assays, but slightly increased in the c/vif1 mutants. Taken together, our results suggest that C/VIF1 is an ABA response gene, and C/VIF1 is involved in the regulation of ABA response and salt tolerance in Arabidopsis.
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Affiliation(s)
- Wenting Yang
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Siyu Chen
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Yuxin Cheng
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Na Zhang
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Yanxing Ma
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Wei Wang
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Hainan Tian
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Yingying Li
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Saddam Hussain
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Shucai Wang
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
- College of Life Sciences, Linyi University, Linyi, China
- CONTACT Shucai Wang School of Life Sciences, Northeast Normal University, Changchun, China
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14
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Tai HH, Lagüe M, Thomson S, Aurousseau F, Neilson J, Murphy A, Bizimungu B, Davidson C, Deveaux V, Bègue Y, Wang HY, Xiong X, Jacobs JME. Tuber transcriptome profiling of eight potato cultivars with different cold-induced sweetening responses to cold storage. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 146:163-176. [PMID: 31756603 DOI: 10.1016/j.plaphy.2019.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/01/2019] [Accepted: 11/02/2019] [Indexed: 05/19/2023]
Abstract
Tubers are vegetative reproduction organs formed from underground extensions of the plant stem. Potato tubers are harvested and stored for months. Storage under cold temperatures of 2-4 °C is advantageous for supressing sprouting and diseases. However, development of reducing sugars can occur with cold storage through a process called cold-induced sweetening (CIS). CIS is undesirable as it leads to darkened color with fry processing. The purpose of the current study was to find differences in biological responses in eight cultivars with variation in CIS resistance. Transcriptome sequencing was done on tubers before and after cold storage and three approaches were taken for gene expression analysis: 1. Gene expression correlated with end-point glucose after cold storage, 2. Gene expression correlated with increased glucose after cold storage (after-before), and 3. Differential gene expression before and after cold storage. Cultivars with high CIS resistance (low glucose after cold) were found to increase expression of an invertase inhibitor gene and genes involved in DNA replication and repair after cold storage. The cultivars with low CIS resistance (high glucose after cold) showed increased expression of genes involved in abiotic stress response, gene expression, protein turnover and the mitochondria. There was a small number of genes with similar expression patterns for all cultivars including genes involved in cell wall strengthening and phospholipases. It is proposed that the pattern of gene expression is related to chilling-induced DNA damage repair and cold acclimation and that genetic variation in these processes are related to CIS.
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Affiliation(s)
- Helen H Tai
- Agriculture and Agri-Food Canada Fredericton Research and Development Centre, P. O. Box 20280, 850 Lincoln Rd, Fredericton, N. B, E3B 4Z7, Canada.
| | - Martin Lagüe
- Agriculture and Agri-Food Canada Fredericton Research and Development Centre, P. O. Box 20280, 850 Lincoln Rd, Fredericton, N. B, E3B 4Z7, Canada
| | - Susan Thomson
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, New Zealand
| | - Frédérique Aurousseau
- Sipre-Responsable Scientifique Création Variétale, Station de Recherche du Comité Nord, 76110, Bretteville du Grand Caux, France
| | - Jonathan Neilson
- Agriculture and Agri-Food Canada Fredericton Research and Development Centre, P. O. Box 20280, 850 Lincoln Rd, Fredericton, N. B, E3B 4Z7, Canada
| | - Agnes Murphy
- Agriculture and Agri-Food Canada Fredericton Research and Development Centre, P. O. Box 20280, 850 Lincoln Rd, Fredericton, N. B, E3B 4Z7, Canada
| | - Benoit Bizimungu
- Agriculture and Agri-Food Canada Fredericton Research and Development Centre, P. O. Box 20280, 850 Lincoln Rd, Fredericton, N. B, E3B 4Z7, Canada
| | - Charlotte Davidson
- Agriculture and Agri-Food Canada Fredericton Research and Development Centre, P. O. Box 20280, 850 Lincoln Rd, Fredericton, N. B, E3B 4Z7, Canada
| | - Virginie Deveaux
- Sipre-Responsable Scientifique Création Variétale, Station de Recherche du Comité Nord, 76110, Bretteville du Grand Caux, France
| | - Yves Bègue
- Sipre-Responsable Scientifique Création Variétale, Station de Recherche du Comité Nord, 76110, Bretteville du Grand Caux, France
| | - Hui Ying Wang
- College of Horticulture and Landscape, Hunan Agriculture Univ, Hunan, Changsha, 410128, China
| | - Xingyao Xiong
- College of Horticulture and Landscape, Hunan Agriculture Univ, Hunan, Changsha, 410128, China
| | - Jeanne M E Jacobs
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, New Zealand
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15
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Su T, Han M, Min J, Zhou H, Zhang Q, Zhao J, Fang Y. Functional Characterization of Invertase Inhibitors PtC/VIF1 and 2 Revealed Their Involvements in the Defense Response to Fungal Pathogen in Populus trichocarpa. FRONTIERS IN PLANT SCIENCE 2019; 10:1654. [PMID: 31969894 PMCID: PMC6960229 DOI: 10.3389/fpls.2019.01654] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 11/22/2019] [Indexed: 05/05/2023]
Abstract
In higher plants, cell wall invertase (CWI) and vacuolar invertase (VI) were considered to be essential coordinators in carbohydrate partitioning, sink strength determination, and stress responses. An increasing body of evidence revealed that the tight regulation of CWI and VI substantially depends on the post-translational mechanisms, which were mediated by small proteinaceous inhibitors (C/VIFs, Inhibitor of β-Fructosidases). As yet, the extensive survey of the molecular basis and biochemical property of C/VIFs remains largely unknown in black cottonwood (Populus trichocarpa Torr. & A. Gray), a model species of woody plants. In the present work, we have initiated a systematic review of the genomic structures, phylogenies, cis-regulatory elements, and conserved motifs as well as the tissue-specific expression, resulting in the identification of 39 genes encoding C/VIF in poplar genome. We characterized two putative invertase inhibitors PtC/VIF1 and 2, showing predominant transcript levels in the roots and highly divergent responses to the selected stress cues including fusarium wilt, drought, ABA, wound, and senescence. In silico prediction of the signal peptide hinted us that they both likely had the apoplastic targets. Based on the experimental visualization via the transient and stable transformation assays, we confirmed that PtC/VIF1 and 2 indeed secreted to the extracellular compartments. Further validation of their recombinant enzymes revealed that they displayed the potent inhibitory affinities on the extracted CWI, supporting the patterns that act as the typical apoplastic invertase inhibitors. To our knowledge, it is the first report on molecular characterization of the functional C/VIF proteins in poplar. Our results indicate that PtC/VIF1 and 2 may exert essential roles in defense- and stress-related responses. Moreover, novel findings of the up- and downregulated C/VIF genes and functional enzyme activities enable us to further unravel the molecular mechanisms in the promotion of woody plant performance and adapted-biotic stress, underlying the homeostatic control of sugar in the apoplast.
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Affiliation(s)
- Tao Su
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
- Key Laboratory of State Forestry Administration on Subtropical Forest Biodiversity Conservation, Nanjing Forestry University, Nanjing, China
| | - Mei Han
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
- *Correspondence: Mei Han, ;
| | - Jie Min
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Huaiye Zhou
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Qi Zhang
- College of Forest, Nanjing Forestry University, Nanjing, China
| | - Jingyi Zhao
- College of Forest, Nanjing Forestry University, Nanjing, China
| | - Yanming Fang
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
- Key Laboratory of State Forestry Administration on Subtropical Forest Biodiversity Conservation, Nanjing Forestry University, Nanjing, China
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16
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Xiao G, Huang W, Cao H, Tu W, Wang H, Zheng X, Liu J, Song B, Xie C. Genetic Loci Conferring Reducing Sugar Accumulation and Conversion of Cold-Stored Potato Tubers Revealed by QTL Analysis in a Diploid Population. FRONTIERS IN PLANT SCIENCE 2018; 9:315. [PMID: 29593769 PMCID: PMC5854652 DOI: 10.3389/fpls.2018.00315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 02/23/2018] [Indexed: 05/29/2023]
Abstract
Cold-induced sweetening (CIS) caused by reducing sugar (RS) accumulation during storage in low temperature in potato tubers is a critical factor influencing the quality of fried potato products. The reconditioning (REC) by arising storage temperature is a common measure to lower down RS. However, both CIS and REC are genotype-dependent and the genetic basis remains uncertain. In the present study, with a diploid potato population with broad genetic background, four reproducible QTL of CIS and two of REC were resolved on chromosomes 5, 6, and 7 of the CIS-sensitive parent and chromosomes 5 and 11 of the CIS-resistant parent, respectively, implying that these two traits may be genetically independent. This hypothesis was also supported by the colocalization of two functional genes, a starch synthesis gene AGPS2 mapped in QTL CIS_E_07-1 and a starch hydrolysis gene GWD colocated with QTL REC_B_05-1. The cumulative effects of identified QTL were proved to contribute largely and stably to CIS and REC and confirmed with a natural population composed of a range of cultivars and breeding lines. The present research identified reproducible QTL for CIS and REC of potato in diverse conditions and elucidated for the first time their cumulative genetic effects, which provides theoretical bases and applicable means for tuber quality improvement.
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Affiliation(s)
- Guilin Xiao
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Wuhan, China
- National Center for Vegetable Improvement (Central China), Wuhan, China
- Potato Engineering and Technology Research Center of Hubei Province, Wuhan, China
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, China
| | - Wei Huang
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Wuhan, China
- National Center for Vegetable Improvement (Central China), Wuhan, China
- Potato Engineering and Technology Research Center of Hubei Province, Wuhan, China
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, China
| | - Hongju Cao
- National Center for Vegetable Improvement (Central China), Wuhan, China
- Potato Engineering and Technology Research Center of Hubei Province, Wuhan, China
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Wuhan, China
| | - Wei Tu
- National Center for Vegetable Improvement (Central China), Wuhan, China
- Potato Engineering and Technology Research Center of Hubei Province, Wuhan, China
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Wuhan, China
| | - Haibo Wang
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Wuhan, China
- National Center for Vegetable Improvement (Central China), Wuhan, China
- Potato Engineering and Technology Research Center of Hubei Province, Wuhan, China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xueao Zheng
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Wuhan, China
- National Center for Vegetable Improvement (Central China), Wuhan, China
- Potato Engineering and Technology Research Center of Hubei Province, Wuhan, China
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, China
| | - Jun Liu
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Wuhan, China
- National Center for Vegetable Improvement (Central China), Wuhan, China
- Potato Engineering and Technology Research Center of Hubei Province, Wuhan, China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Botao Song
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Wuhan, China
- Potato Engineering and Technology Research Center of Hubei Province, Wuhan, China
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Wuhan, China
| | - Conghua Xie
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Wuhan, China
- National Center for Vegetable Improvement (Central China), Wuhan, China
- Potato Engineering and Technology Research Center of Hubei Province, Wuhan, China
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, China
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17
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Liu T, Fang H, Liu J, Reid S, Hou J, Zhou T, Tian Z, Song B, Xie C. Cytosolic glyceraldehyde-3-phosphate dehydrogenases play crucial roles in controlling cold-induced sweetening and apical dominance of potato (Solanum tuberosum L.) tubers. PLANT, CELL & ENVIRONMENT 2017; 40:3043-3054. [PMID: 28940493 DOI: 10.1111/pce.13073] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/28/2017] [Accepted: 08/28/2017] [Indexed: 05/17/2023]
Abstract
Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is an important enzyme that functions in producing energy and supplying intermediates for cellular metabolism. Recent researches indicate that GAPDHs have multiple functions beside glycolysis. However, little information is available for functions of GAPDHs in potato. Here, we identified 4 putative cytosolic GAPDH genes in potato genome and demonstrated that the StGAPC1, StGAPC2, and StGAPC3, which are constitutively expressed in potato tissues and cold inducible in tubers, encode active cytosolic GAPDHs. Cosuppression of these 3 GAPC genes resulted in low tuber GAPDH activity, consequently the accumulation of reducing sugars in cold stored tubers by altering the tuber metabolite pool sizes favoring the sucrose pathway. Furthermore, GAPCs-silenced tubers exhibited a loss of apical dominance dependent on cell death of tuber apical bud meristem (TAB-meristem). It was also confirmed that StGAPC1, StGAPC2, and StGAPC3 interacted with the autophagy-related protein 3 (ATG3), implying that the occurrence of cell death in TAB-meristem could be induced by ATG3 associated events. Collectively, the present research evidences first that the GAPC genes play crucial roles in diverse physiological and developmental processes in potato tubers.
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Affiliation(s)
- Tengfei Liu
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Hui Fang
- Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- National Center for Vegetable Improvement (Central China), Wuhan, 430070, People's Republic of China
| | - Jun Liu
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- National Center for Vegetable Improvement (Central China), Wuhan, 430070, People's Republic of China
| | - Stephen Reid
- Biochemistry Division, Department of Biology, Friedrich-Alexander-University Erlangen-Nuernberg, 91058, Erlangen, Germany
| | - Juan Hou
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- National Center for Vegetable Improvement (Central China), Wuhan, 430070, People's Republic of China
| | - Tingting Zhou
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- National Center for Vegetable Improvement (Central China), Wuhan, 430070, People's Republic of China
| | - Zhendong Tian
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Botao Song
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Conghua Xie
- Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- National Center for Vegetable Improvement (Central China), Wuhan, 430070, People's Republic of China
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18
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Xu XX, Hu Q, Yang WN, Jin Y. The roles of call wall invertase inhibitor in regulating chilling tolerance in tomato. BMC PLANT BIOLOGY 2017; 17:195. [PMID: 29121866 PMCID: PMC5679139 DOI: 10.1186/s12870-017-1145-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 10/31/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND Hexoses are important metabolic signals that respond to abiotic and biotic stresses. Cold stress adversely affects plant growth and development, limiting productivity. The mechanism by which sugars regulate plant cold tolerance remains elusive. RESULTS We examined the function of INVINH1, a cell wall invertase inhibitor, in tomato chilling tolerance. Cold stress suppressed the transcription of INVINH1 and increased that of cell wall invertase genes, Lin6 and Lin8 in tomato seedlings. Silencing INVINH1 expression in tomato increased cell wall invertase activity and enhanced chilling tolerance. Conversely, transgenic tomatoes over-expressing INVINH1 showed reduced cell wall invertase activity and were more sensitive to cold stress. Chilling stress increased glucose and fructose levels, and the hexoses content increased or decreased by silencing or overexpression INVINH1. Glucose applied in vitro masked the differences in chilling tolerance of tomato caused by the different expressions of INVINH1. The repression of INVINH1 or glucose applied in vitro regulated the expression of C-repeat binding factors (CBFs) genes. Transcript levels of NCED1, which encodes 9-cisepoxycarotenoid dioxygenase (NCED), a key enzyme in the biosynthesis of abscisic acid, were suppressed by INVINH1 after exposure to chilling stress. Meanwhile, application of ABA protected plant from chilling damage caused by the different expression of INVINH1. CONCLUSIONS In tomato, INVINH1 plays an important role in chilling tolerance by adjusting the content of glucose and expression of CBFs.
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Affiliation(s)
- Xiao-xia Xu
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079 People’s Republic of China
| | - Qin Hu
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079 People’s Republic of China
| | - Wan-nian Yang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079 People’s Republic of China
| | - Ye Jin
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079 People’s Republic of China
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19
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Li J, Wu L, Foster R, Ruan YL. Molecular regulation of sucrose catabolism and sugar transport for development, defence and phloem function. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2017; 59:322-335. [PMID: 28304127 DOI: 10.1111/jipb.12539] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 03/15/2017] [Indexed: 06/06/2023]
Abstract
Sucrose (Suc) is the major end product of photosynthesis in mesophyll cells of most vascular plants. It is loaded into phloem of mature leaves for long-distance translocation to non-photosynthetic organs where it is unloaded for diverse uses. Clearly, Suc transport and metabolism is central to plant growth and development and the functionality of the entire vascular system. Despite vast information in the literature about the physiological roles of individual sugar metabolic enzymes and transporters, there is a lack of systematic evaluation about their molecular regulation from transcriptional to post-translational levels. Knowledge on this topic is essential for understanding and improving plant development, optimizing resource distribution and increasing crop productivity. We therefore focused our analyses on molecular control of key players in Suc metabolism and transport, including: (i) the identification of promoter elements responsive to sugars and hormones or targeted by transcription factors and microRNAs degrading transcripts of target genes; and (ii) modulation of enzyme and transporter activities through protein-protein interactions and other post-translational modifications. We have highlighted major remaining questions and discussed opportunities to exploit current understanding to gain new insights into molecular control of carbon partitioning for improving plant performance.
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Affiliation(s)
- Jun Li
- Australia-China Research Centre for Crop Improvement and School of Environmental and Life Sciences, The University of Newcastle, NSW 2308, Australia
| | - Limin Wu
- CSIRO Agriculture, Canberra, ACT 2601, Australia
| | - Ryan Foster
- Australia-China Research Centre for Crop Improvement and School of Environmental and Life Sciences, The University of Newcastle, NSW 2308, Australia
| | - Yong-Ling Ruan
- Australia-China Research Centre for Crop Improvement and School of Environmental and Life Sciences, The University of Newcastle, NSW 2308, Australia
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20
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Liu X, Shi W, Yin W, Wang J. Distinct cold responsiveness of a StInvInh2 gene promoter in transgenic potato tubers with contrasting resistance to cold-induced sweetening. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 111:77-84. [PMID: 27915175 DOI: 10.1016/j.plaphy.2016.11.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 11/18/2016] [Accepted: 11/26/2016] [Indexed: 05/19/2023]
Abstract
Potato (Solanum tuberosum L.) vacuolar invertase (β-fructofuranosidase; EC 3.2.1.26) inhibitor 2 (StInvInh2) plays an important role in cold-induced sweetening (CIS) of potato tubers. The transcript levels of StInvInh2 were increased by prolonged cold in potato tubers with CIS-resistance but decreased in potato tubers with CIS-sensitivity. However, the transcript regulation mechanisms of StInvInh2 responding to prolonged cold are largely unclear in CIS-resistant and CIS-sensitive genotypes. In the present study, the 5'-flanking sequence of the StInvInh2 was cloned, and cis-acting elements were predicted. No informative differences in StInvInh2 promoter structure between resistant and sensitive-CIS potato genotypes were observed. Histochemical assay showed that the promoter of StInvInh2 mainly governed β-glucuronidase (GUS) expression in potato microtubers. Quantitative analysis of GUS expression suggested that StInvInh2 promoter activity was enhanced by prolonged cold in CIS-resistant genotype tubers but suppressed in CIS-sensitive tubers. These findings provide essential information regarding transcriptional regulatory mechanisms of StInvInh2 in cold-stored tubers contrasting CIS capacity.
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Affiliation(s)
- Xun Liu
- Key Open Laboratory of Southwest Crop Genetic Improvement and Breeding, Ministry of Agriculture, Southwest University, Chongqing 400075, China; Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing 400075, China.
| | - Weiling Shi
- Key Open Laboratory of Southwest Crop Genetic Improvement and Breeding, Ministry of Agriculture, Southwest University, Chongqing 400075, China; Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing 400075, China
| | - Wang Yin
- Key Open Laboratory of Southwest Crop Genetic Improvement and Breeding, Ministry of Agriculture, Southwest University, Chongqing 400075, China; Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing 400075, China
| | - Jichun Wang
- Key Open Laboratory of Southwest Crop Genetic Improvement and Breeding, Ministry of Agriculture, Southwest University, Chongqing 400075, China; Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing 400075, China.
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21
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Tang X, Su T, Han M, Wei L, Wang W, Yu Z, Xue Y, Wei H, Du Y, Greiner S, Rausch T, Liu L. Suppression of extracellular invertase inhibitor gene expression improves seed weight in soybean (Glycine max). JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:469-482. [PMID: 28204559 PMCID: PMC5441900 DOI: 10.1093/jxb/erw425] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Cell wall invertase (CWI) and vacuolar invertase (VI) play multiple functions in plant growth. As well as depending on transcriptional and post-transcriptional regulation, there is growing evidence that CWI and VI are also subject to post-translational control by small inhibitory proteins. Despite the significance of this, genes encoding inhibitors, their molecular and biochemical properties, and their potential roles in regulating seed production have not been well documented in soybean (Glycine max). In this study, two invertase inhibitor isoforms, GmCIF1 and GmC/VIF2, were characterized to possess inhibitory activities in vitro via heterologous expression. Transcript analyses showed that they were predominantly expressed in developing seeds and in response to ABA. In accordance with this, surveys of primary targets showed subcellular localizations to the apoplast in tobacco epidermis after expressing YFP-fusion constructs. Investigations using RNAi transgenic plants demonstrated marked elevations of CWI activities and improvements in seed weight in conjunction with higher accumulations of hexoses, starch, and protein in mature seeds. Further co-expression analyses of GmCIF1 with several putative CWI genes corroborated the notion that GmCIF1 modulation of CWI that affects seed weight is mainly contingent on post-translational mechanisms. Overall, the results suggest that post-translational elevation of CWI by silencing of GmCIF1 expression orchestrates the process of seed maturation through fine-tuning sucrose metabolism and sink strength.
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Affiliation(s)
- Xiaofei Tang
- Soybean Research Institute, Academy of Agricultural Sciences, Harbin, China
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld, Heidelberg, Germany
| | - Tao Su
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and Environment, Nanjing Forestry University, Nanjing, China
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld, Heidelberg, Germany
| | - Mei Han
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and Environment, Nanjing Forestry University, Nanjing, China
| | - Lai Wei
- Soybean Research Institute, Academy of Agricultural Sciences, Harbin, China
| | - Weiwei Wang
- Soybean Research Institute, Academy of Agricultural Sciences, Harbin, China
| | - Zhiyuan Yu
- Soybean Research Institute, Academy of Agricultural Sciences, Harbin, China
| | - Yongguo Xue
- Soybean Research Institute, Academy of Agricultural Sciences, Harbin, China
| | - Hongbin Wei
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld, Heidelberg, Germany
| | - Yejie Du
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld, Heidelberg, Germany
| | - Steffen Greiner
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld, Heidelberg, Germany
| | - Thomas Rausch
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld, Heidelberg, Germany
| | - Lijun Liu
- Soybean Research Institute, Academy of Agricultural Sciences, Harbin, China
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22
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Zhang H, Hou J, Liu J, Zhang J, Song B, Xie C. The roles of starch metabolic pathways in the cold-induced sweetening process in potatoes. STARCH-STARKE 2016. [DOI: 10.1002/star.201600194] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Huiling Zhang
- College of Forestry; Henan University of Science and Technology; Luoyang P.R. China
- Key Laboratory of Horticultural Plant Biology (HAU); Ministry of Education, National Centre for Vegetable Improvement (Central China); Huazhong Agricultural University; Wuhan P.R. China
| | - Juan Hou
- Key Laboratory of Horticultural Plant Biology (HAU); Ministry of Education, National Centre for Vegetable Improvement (Central China); Huazhong Agricultural University; Wuhan P.R. China
| | - Jun Liu
- Key Laboratory of Horticultural Plant Biology (HAU); Ministry of Education, National Centre for Vegetable Improvement (Central China); Huazhong Agricultural University; Wuhan P.R. China
| | - Juping Zhang
- College of Forestry; Henan University of Science and Technology; Luoyang P.R. China
| | - Botao Song
- Key Laboratory of Horticultural Plant Biology (HAU); Ministry of Education, National Centre for Vegetable Improvement (Central China); Huazhong Agricultural University; Wuhan P.R. China
| | - Conghua Xie
- Key Laboratory of Horticultural Plant Biology (HAU); Ministry of Education, National Centre for Vegetable Improvement (Central China); Huazhong Agricultural University; Wuhan P.R. China
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23
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Ali A, Ahmad Nasir I, Muzaffar A, Shahzad Iqbal M, Qayyum Rao A, Husnain T. Screening of Potato Germplasm Resistant Against Low Temperature Sweetening. J FOOD QUALITY 2016. [DOI: 10.1111/jfq.12196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Arfan Ali
- Centre of Excellence in Molecular Biology, University of the Punjab; Lahore Pakistan
- Institute of Molecular Biology and Biotechnology, The University of Lahore; Lahore Pakistan
| | - Idrees Ahmad Nasir
- Centre of Excellence in Molecular Biology, University of the Punjab; Lahore Pakistan
| | - Adnan Muzaffar
- Centre of Excellence in Molecular Biology, University of the Punjab; Lahore Pakistan
| | | | - Abdul Qayyum Rao
- Centre of Excellence in Molecular Biology, University of the Punjab; Lahore Pakistan
| | - Tayyab Husnain
- Centre of Excellence in Molecular Biology, University of the Punjab; Lahore Pakistan
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24
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Su T, Wolf S, Han M, Zhao H, Wei H, Greiner S, Rausch T. Reassessment of an Arabidopsis cell wall invertase inhibitor AtCIF1 reveals its role in seed germination and early seedling growth. PLANT MOLECULAR BIOLOGY 2016; 90:137-55. [PMID: 26546341 DOI: 10.1007/s11103-015-0402-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 10/30/2015] [Indexed: 05/19/2023]
Abstract
In higher plants, cell wall invertase (CWI) and vacuolar invertase (VI) are recognized as essential players in sugar metabolism and sugar signaling, thereby affecting source-sink interactions, plant development and responses to environmental cues. CWI and VI expression levels are transcriptionally controlled; however, both enzymes are also subject to posttranslational control by invertase inhibitor proteins. The physiological significances of inhibitor proteins during seed germination and early seedling development are not yet fully understood. Here, we demonstrate that the inhibitor isoform AtCIF1 impacted on seed germination and early seedling growth in Arabidopsis. The primary target of AtCIF1 was shown to be localized to the apoplast after expressing an AtCIF1 YFP-fusion construct in tobacco epidermis and transgenic Arabidopsis root. The analysis of expression patterns showed that AtCWI1 was co-expressed spatiotemporally with AtCIF1 within the early germinating seeds. Seed germination was observed to be accelerated independently of exogenous abscisic acid (ABA) in the AtCIF1 loss-of-function mutant cif1-1. This effect coincided with a drastic increase of CWI activity in cif1-1 mutant seeds by 24 h after the onset of germination, both in vitro and in planta. Accordingly, quantification of sugar content showed that hexose levels were significantly boosted in germinating seeds of the cif1-1 mutant. Further investigation of AtCIF1 overexpressors in Arabidopsis revealed a markedly suppressed CWI activity as well as delayed seed germination. Thus, we conclude that the posttranslational modulation of CWI activity by AtCIF1 helps to orchestrate seed germination and early seedling growth via fine-tuning sucrose hydrolysis and, possibly, sugar signaling.
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Affiliation(s)
- Tao Su
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld 360, Heidelberg, 69120, Germany.
- Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E9, Canada.
| | - Sebastian Wolf
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld 360, Heidelberg, 69120, Germany.
| | - Mei Han
- Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E9, Canada.
| | - Hongbo Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Hongbin Wei
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld 360, Heidelberg, 69120, Germany.
| | - Steffen Greiner
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld 360, Heidelberg, 69120, Germany.
| | - Thomas Rausch
- Plant Molecular Physiology, Centre for Organismal Studies (COS), Heidelberg University, Im Neuenheimer Feld 360, Heidelberg, 69120, Germany.
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25
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Zhang H, Liu J, Hou J, Yao Y, Lin Y, Ou Y, Song B, Xie C. The potato amylase inhibitor gene SbAI regulates cold-induced sweetening in potato tubers by modulating amylase activity. PLANT BIOTECHNOLOGY JOURNAL 2014; 12:984-93. [PMID: 24985879 DOI: 10.1111/pbi.12221] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 05/29/2014] [Accepted: 05/30/2014] [Indexed: 05/17/2023]
Abstract
Potato cold-induced sweetening (CIS) is critical for the postharvest quality of potato tubers. Starch degradation is considered to be one of the key pathways in the CIS process. However, the functions of the genes that encode enzymes related to starch degradation in CIS and the activity regulation of these enzymes have received less attention. A potato amylase inhibitor gene known as SbAI was cloned from the wild potato species Solanum berthaultii. This genetic transformation confirmed that in contrast to the SbAI suppression in CIS-resistant potatoes, overexpressing SbAI in CIS-sensitive potatoes resulted in less amylase activity and a lower rate of starch degradation accompanied by a lower reducing sugar (RS) content in cold-stored tubers. This finding suggested that the SbAI gene may play crucial roles in potato CIS by modulating the amylase activity. Further investigations indicated that pairwise protein-protein interactions occurred between SbAI and α-amylase StAmy23, β-amylases StBAM1 and StBAM9. SbAI could inhibit the activities of both α-amylase and β-amylase in potato tubers primarily by repressing StAmy23 and StBAM1, respectively. These findings provide the first evidence that SbAI is a key regulator of the amylases that confer starch degradation and RS accumulation in cold-stored potato tubers.
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Affiliation(s)
- Huiling Zhang
- Key Laboratory of Horticultural Plant Biology (HAU), Ministry of Education, National Centre for Vegetable Improvement (Central China), Huazhong Agricultural University, Wuhan, China; College of Forestry, Henan University of Science and Technology, Luoyang, China
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26
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Zommick DH, Knowles LO, Pavek MJ, Knowles NR. In-season heat stress compromises postharvest quality and low-temperature sweetening resistance in potato (Solanum tuberosum L.). PLANTA 2014; 239:1243-1263. [PMID: 24615233 DOI: 10.1007/s00425-014-2048-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 02/18/2014] [Indexed: 06/03/2023]
Abstract
The effects of soil temperature during tuber development on physiological processes affecting retention of postharvest quality in low-temperature sweetening (LTS) resistant and susceptible potato cultivars were investigated. 'Premier Russet' (LTS resistant), AO02183-2 (LTS resistant) and 'Ranger Russet' (LTS susceptible) tubers were grown at 16 (ambient), 23 and 29 °C during bulking (111-164 DAP) and maturation (151-180 DAP). Bulking at 29 °C virtually eliminated yield despite vigorous vine growth. Tuber specific gravity decreased as soil temperature increased during bulking, but was not affected by temperature during maturation. Bulking at 23 °C and maturation at 29 °C induced higher reducing sugar levels in the proximal (basal) ends of tubers, resulting in non-uniform fry color at harvest, and abolished the LTS-resistant phenotype of 'Premier Russet' tubers. AO02183-2 tubers were more tolerant of heat for retention of LTS resistance. Higher bulking and maturation temperatures also accelerated LTS and loss of process quality of 'Ranger Russet' tubers, consistent with increased invertase and lower invertase inhibitor activities. During LTS, tuber respiration fell rapidly to a minimum as temperature decreased from 9 to 4 °C, followed by an increase to a maximum as tubers acclimated to 4 °C; respiration then declined over the remaining storage period. The magnitude of this cold-induced acclimation response correlated directly with the extent of buildup in sugars over the 24-day LTS period and thus reflected the effects of in-season heat stress on propensity of tubers to sweeten and lose process quality at 4 °C. While morphologically indistinguishable from control tubers, tubers grown at elevated temperature had different basal metabolic (respiration) rates at harvest and during cold acclimation, reduced dormancy during storage, greater increases in sucrose and reducing sugars and associated loss of process quality during LTS, and reduced ability to improve process quality through reconditioning. Breeding for retention of postharvest quality and LTS resistance should consider strategies for incorporating more robust tolerance to in-season heat stress.
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Affiliation(s)
- Daniel H Zommick
- Postharvest Physiology and Biochemistry Laboratory, Department of Horticulture, Washington State University, P.O. Box 646414, Pullman, WA, 99164-6414, USA
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27
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Cloning, 3D modeling and expression analysis of three vacuolar invertase genes from cassava (Manihot Esculenta Crantz). Molecules 2014; 19:6228-45. [PMID: 24838076 PMCID: PMC6270675 DOI: 10.3390/molecules19056228] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 05/02/2014] [Accepted: 05/12/2014] [Indexed: 11/23/2022] Open
Abstract
Vacuolar invertase is one of the key enzymes in sucrose metabolism that irreversibly catalyzes the hydrolysis of sucrose to glucose and fructose in plants. In this research, three vacuolar invertase genes, named MeVINV1-3, and with 653, 660 and 639 amino acids, respectively, were cloned from cassava. The motifs of NDPNG (β-fructosidase motif), RDP and WECVD, which are conserved and essential for catalytic activity in the vacuolar invertase family, were found in MeVINV1 and MeVINV2. Meanwhile, in MeVINV3, instead of NDPNG we found the motif NGPDG, in which the three amino acids GPD are different from those in other vacuolar invertases (DPN) that might result in MeVINV3 being an inactivated protein. The N-terminal leader sequence of MeVINVs contains a signal anchor, which is associated with the sorting of vacuolar invertase to vacuole. The overall predicted 3D structure of the MeVINVs consists of a five bladed β-propeller module at N-terminus domain, and forms a β-sandwich module at the C-terminus domain. The active site of the protein is situated in the β-propeller module. MeVINVs are classified in two subfamilies, α and β groups, in which α group members of MeVINV1 and 2 are highly expressed in reproductive organs and tuber roots (considered as sink organs), while β group members of MeVINV3 are highly expressed in leaves (source organs). All MeVINVs are highly expressed in leaves, while only MeVINV1 and 2 are highly expressed in tubers at cassava tuber maturity stage. Thus, MeVINV1 and 2 play an important role in sucrose unloading and starch accumulation, as well in buffering the pools of sucrose, hexoses and sugar phosphates in leaves, specifically at later stages of plant development.
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28
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Functional characterization of a vacuolar invertase from Solanum lycopersicum: post-translational regulation by N-glycosylation and a proteinaceous inhibitor. Biochimie 2013; 101:39-49. [PMID: 24374160 DOI: 10.1016/j.biochi.2013.12.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 12/13/2013] [Indexed: 11/22/2022]
Abstract
Plant vacuolar invertases, which belong to family 32 of glycoside hydrolases (GH32), are key enzymes in sugar metabolism. They hydrolyse sucrose into glucose and fructose. The cDNA encoding a vacuolar invertase from Solanum lycopersicum (TIV-1) was cloned and heterologously expressed in Pichia pastoris. The functional role of four N-glycosylation sites in TIV-1 has been investigated by site-directed mutagenesis. Single mutations to Asp of residues Asn52, Asn119 and Asn184, as well as the triple mutant (Asn52, Asn119 and Asn184), lead to enzymes with reduced specific invertase activity and thermostability. Expression of the N516D mutant, as well as of the quadruple mutant (N52D, N119D, N184D and N516D) could not be detected, indicating that these mutations dramatically affected the folding of the protein. Our data indicate that N-glycosylation is important for TIV-1 activity and that glycosylation of N516 is crucial for recombinant enzyme stability. Using a functional genomics approach a new vacuolar invertase inhibitor of S. lycopersicum (SolyVIF) has been identified. SolyVIF cDNA was cloned and heterologously expressed in Escherichia coli. Specific interactions between SolyVIF and TIV-1 were investigated by an enzymatic approach and surface plasmon resonance (SPR). Finally, qRT-PCR analysis of TIV-1 and SolyVIF transcript levels showed a specific tissue and developmental expression. TIV-1 was mainly expressed in flowers and both genes were expressed in senescent leaves.
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29
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Lin Y, Liu J, Liu X, Ou Y, Li M, Zhang H, Song B, Xie C. Interaction proteins of invertase and invertase inhibitor in cold-stored potato tubers suggested a protein complex underlying post-translational regulation of invertase. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2013; 73:237-44. [PMID: 24161651 DOI: 10.1016/j.plaphy.2013.09.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 09/18/2013] [Indexed: 05/19/2023]
Abstract
The activity of vacuolar invertase (VI) is vital to potato cold-induced sweetening (CIS). A post-translational regulation of VI activity has been proposed which involves invertase inhibitor (VIH), but the mechanism for the interaction between VI and VIH has not been fully understood. To identify the potential partners of VI and VIH, two cDNA libraries were respectively constructed from CIS-resistant wild potato species Solanum berthaultii and CIS-sensitive potato cultivar AC035-01 for the yeast two-hybrid analysis. The StvacINV1 (one of the potato VIs) and StInvInh2B (one of the potato VIHs), previously identified to be associated with potato CIS, were used as baits to screen the two libraries. Through positive selection and sequencing, 27 potential target proteins of StvacINV1 and eight of StInvInh2B were clarified. The Kunitz-type protein inhibitors were captured by StvacINV1 in both libraries and the interaction between them was confirmed by bimolecular fluorescence complementation assay in tobacco cells, reinforcing a fundamental interaction between VI and VIH. Notably, a sucrose non-fermenting-1-related protein kinase 1 was captured by both the baits, suggesting that a protein complex could be necessary for fine turning of the invertase activity. The target proteins clarified in present research provide a route to elucidate the mechanism by which the VI activity can be subtly modulated.
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Affiliation(s)
- Yuan Lin
- National Center for Vegetable Improvement (Central China), Wuhan 430070, People's Republic of China; Key Laboratory of Horticultural Plant Biology (Huazhong Agricultural University), Ministry of Education, Wuhan 430070, People's Republic of China; Huazhong Agricultural University, Wuhan 430070, People's Republic of China
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Ou Y, Song B, Liu X, Xie C, Li M, Lin Y, Zhang H, Liu J. Promoter regions of potato vacuolar invertase gene in response to sugars and hormones. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2013; 69:9-16. [PMID: 23688776 DOI: 10.1016/j.plaphy.2013.04.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 04/22/2013] [Indexed: 05/23/2023]
Abstract
Potato vacuolar acid invertase (StvacINV1) (β-fructofuranosidase; EC 3.2.1.26) has been confirmed to play an important role in cold-induced sweetening of potato tubers. However, the transcriptional regulation mechanisms of StvacINV1 are largely unknown. In this study, the 5'-flanking sequence of StvacINV1 was cloned and the cis-acting elements were predicted. Histochemical assay showed that the StvacINV1 promoter governed β-glucuronidase (GUS) expression in potato leaves, stems, roots and tubers. Quantitative analysis of GUS expression suggested that the activity of StvacINV1 promoter was suppressed by sucrose, glucose, fructose, and cold, while enhanced by indole-3-acetic acid (IAA), and gibberellic acid (GA3). Further deletion analysis clarified that the promoter regions from -118 to -551, -551 to -1021, and -1021 to -1521 were required for responding to sucrose/glucose, GA3, and IAA, respectively. These findings provide essential information regarding transcriptional regulation mechanisms of StvacINV1.
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Affiliation(s)
- Yongbin Ou
- National Centre for Vegetable Improvement Central China, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
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