1
|
Zhang Q, Chen C, Guo R, Zhu X, Tao X, He M, Li Z, Shen L, Li Q, Ren D, Hu J, Zhu L, Zhang G, Qian Q. Plasma membrane-localized hexose transporter OsSWEET1b, affects sugar metabolism and leaf senescence. PLANT CELL REPORTS 2024; 43:29. [PMID: 38183427 DOI: 10.1007/s00299-023-03125-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 12/04/2023] [Indexed: 01/08/2024]
Abstract
KEY MESSAGE OsSWEET1b is a hexose transporter protein, which localized in cell membranes and interacting with itself to form homodimer and knockout of OsSWEET1b resulted in reduced leaves sugar content and accelerating leaf senescence. In the rice genome, the SWEET gene family contains 21 homologous members, but the role of some of them in rice growth and development is still unknown. The function of the sugar transporter OsSWEET1b protein in rice was identified in this research. Expression analysis showed that the expression levels of OsSWEET1b in leaves were higher than that in other tissues. The hexose transport experiment confirmed that OsSWEET1b has glucose and galactose transporter activity in yeast. Subcellular localization indicates that OsSWEET1b protein was targeted to the plasma membrane and BiFC analysis showed that OsSWEET1b interacts with itself to form homodimers. Functional analysis demonstrated that the ossweet1b mutant plants were have reduced the sucrose, glucose, fructose, starch and galactose contents, and induced carbon starvation-related gene expression, which might lead to carbon starvation in leaves at filling stage. The ossweet1b knockout plants showed decreased chlorophyll content and antioxidant enzyme activity, and increased ROS accumulation in leaves, leading to leaf cell death and premature senescence phenotype at filling stage. In ossweet1b mutants, the leaf senescence-related gene expression levels were increased and the abundance of photosynthesis-related proteins was decreased. Loss of OsSWEET1b were affected the starch, sucrose metabolism and carbon fixation in photosynthetic organelles pathway by RNA-seq analysis. The destruction of OsSWEET1b function will cause sugar starvation, decreased photosynthesis and leaf senescence, which leading to reduced rice yield. Collectively, our results suggest that the OsSWEET1b plays a key role in rice leaves carbohydrate metabolism and leaf senescence.
Collapse
Affiliation(s)
- Qiang Zhang
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya, 572000, China
| | - Changzhao Chen
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Rui Guo
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Xiaofang Zhu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Science, Nanjing, 210008, China
| | - Xinyu Tao
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310006, Zhejiang, China
| | - Mengxing He
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
| | - Zhiwen Li
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Science, Nanjing, 210008, China
| | - Lan Shen
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Qing Li
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Deyong Ren
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Jiang Hu
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Li Zhu
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Guangheng Zhang
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Qian Qian
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China.
- National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya, 572000, China.
| |
Collapse
|
2
|
Lin Z, Yi X, Ali MM, Zhang L, Wang S, Chen F. Transcriptome Insights into Candidate Genes of the SWEET Family and Carotenoid Biosynthesis during Fruit Growth and Development in Prunus salicina 'Huangguan'. PLANTS (BASEL, SWITZERLAND) 2023; 12:3513. [PMID: 37836253 PMCID: PMC10574959 DOI: 10.3390/plants12193513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 10/15/2023]
Abstract
The Chinese plum (Prunus salicina L.) is a fruit tree belonging to the Rosaceae family, native to south-eastern China and widely cultivated throughout the world. Fruit sugar metabolism and color change is an important physiological behavior that directly determines flavor and aroma. Our study analyzed six stages of fruit growth and development using RNA-seq, yielding a total of 14,973 DEGs, and further evaluation of key DEGs revealed a focus on sugar metabolism, flavonoid biosynthesis, carotenoid biosynthesis, and photosynthesis. Using GO and KEGG to enrich differential genes in the pathway, we selected 107 differential genes and obtained 49 significant differential genes related to glucose metabolism. The results of the correlation analyses indicated that two genes of the SWEET family, evm.TU.Chr1.3663 (PsSWEET9) and evm.TU.Chr4.676 (PsSWEET2), could be closely related to the composition of soluble sugars, which was also confirmed in the ethylene treatment experiments. In addition, analysis of the TOP 20 pathways between different growth stages and the green stage, as well as transient overexpression in chili, suggested that capsanthin/capsorubin synthase (PsCCS) of the carotenoid biosynthetic pathway contributed to the color change of plum fruit. These findings provide an insight into the molecular mechanisms involved in the ripening and color change of plum fruit.
Collapse
Affiliation(s)
- Zhimin Lin
- Fujian Academy of Agricultural Sciences Biotechnology Institute, Fuzhou 350003, China
| | - Xiaoyan Yi
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.Y.); (M.M.A.); (L.Z.); (S.W.)
| | - Muhammad Moaaz Ali
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.Y.); (M.M.A.); (L.Z.); (S.W.)
| | - Lijuan Zhang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.Y.); (M.M.A.); (L.Z.); (S.W.)
| | - Shaojuan Wang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.Y.); (M.M.A.); (L.Z.); (S.W.)
| | - Faxing Chen
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.Y.); (M.M.A.); (L.Z.); (S.W.)
| |
Collapse
|
3
|
Guo R, Liu L, Huang Y, Lv M, Zhu Y, Wang Z, Zhu X, Sun B. Effect of Na + and Ca 2+ on the texture, structure and microstructure of composite protein gel of mung bean protein and wheat gluten. Food Res Int 2023; 172:113124. [PMID: 37689843 DOI: 10.1016/j.foodres.2023.113124] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/06/2023] [Accepted: 06/09/2023] [Indexed: 09/11/2023]
Abstract
To investigate the change of ionic strength on the gel characteristics during the processing of mung bean protein-based foods, the effects of NaCl and CaCl2 at different concentrations (0-0.005 g/mL) on the properties of mung bean protein (MBP) and wheat gluten (WG) composite protein gel were studied. The results showed that low concentration (0.001-0.002 g/mL) could significantly improve the water holding capacity (WHC), storage modulus (G') and texture properties of composite protein gel (MBP/WG), while the surface hydrophobicity (H0) and solubility were significantly decreased (P < 0.05). With the increase of ion concentration, the secondary structures of MBP/WG shifted from α-helix to β-sheet, and the fluorescence spectra also showed fluorescence quenching phenomenon. By analyzing the intermolecular forces of MBP/WG, it was found that with the addition of salt ions, the hydrogen bonds was weakened and the electrostatic interactions, hydrophobic interactions and disulfide bonds were enhanced, which in turn the aggregation behavior of MBP/WG composite protein gel was affected and larger aggregates between the proteins were formed. It could be also demonstrated that the gel network was denser due to the addition of these large aggregates, thus the gel properties of MBP/WG was improved. However, too many salt ions could disrupt the stable network structure of protein gel. This study can provide theoretical support to expand the development of new mung bean protein products.
Collapse
Affiliation(s)
- Ruqi Guo
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Linlin Liu
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Yuyang Huang
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Mingshou Lv
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Ying Zhu
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Zihan Wang
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Xiuqing Zhu
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China.
| | - Bingyu Sun
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China.
| |
Collapse
|
4
|
Ren Y, Liao S, Xu Y. An update on sugar allocation and accumulation in fruits. PLANT PHYSIOLOGY 2023; 193:888-899. [PMID: 37224524 DOI: 10.1093/plphys/kiad294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 04/26/2023] [Accepted: 05/04/2023] [Indexed: 05/26/2023]
Abstract
Fruit sweetness is determined by the amount and composition of sugars in the edible flesh. The accumulation of sugar is a highly orchestrated process that requires coordination of numerous metabolic enzymes and sugar transporters. This coordination enables partitioning and long-distance translocation of photoassimilates from source tissues to sink organs. In fruit crops, sugars ultimately accumulate in the sink fruit. Whereas tremendous progress has been achieved in understanding the function of individual genes associated with sugar metabolism and sugar transport in non-fruit crops, there is less known about the sugar transporters and metabolic enzymes responsible for sugar accumulation in fruit crop species. This review identifies knowledge gaps and can serve as a foundation for future studies, with comprehensive updates focusing on (1) the physiological roles of the metabolic enzymes and sugar transporters responsible for sugar allocation and partitioning and that contribute to sugar accumulation in fruit crops; and (2) the molecular mechanisms underlying the transcriptional and posttranslational regulation of sugar transport and metabolism. We also provide insights into the challenges and future directions of studies on sugar transporters and metabolic enzymes and name several promising genes that should be targeted with gene editing in the pursuit of optimized sugar allocation and partitioning to enhance sugar accumulation in fruits.
Collapse
Affiliation(s)
- Yi Ren
- National Watermelon and Melon Improvement Center, Beijing Academy of Agricultural and Forestry Sciences (BAAFS), State Key Laboratory of Vegetable Biobreeding, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Beijing Key Laboratory of Vegetable Germplasm Improvement, Beijing 100097, China
| | - Shengjin Liao
- National Watermelon and Melon Improvement Center, Beijing Academy of Agricultural and Forestry Sciences (BAAFS), State Key Laboratory of Vegetable Biobreeding, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Beijing Key Laboratory of Vegetable Germplasm Improvement, Beijing 100097, China
| | - Yong Xu
- National Watermelon and Melon Improvement Center, Beijing Academy of Agricultural and Forestry Sciences (BAAFS), State Key Laboratory of Vegetable Biobreeding, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Beijing Key Laboratory of Vegetable Germplasm Improvement, Beijing 100097, China
| |
Collapse
|
5
|
Matilla AJ. The Interplay between Enucleated Sieve Elements and Companion Cells. PLANTS (BASEL, SWITZERLAND) 2023; 12:3033. [PMID: 37687278 PMCID: PMC10489895 DOI: 10.3390/plants12173033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/10/2023] [Accepted: 08/15/2023] [Indexed: 09/10/2023]
Abstract
In order to adapt to sessile life and terrestrial environments, vascular plants have developed highly sophisticated cells to transport photosynthetic products and developmental signals. Of these, two distinct cell types (i.e., the sieve element (SE) and companion cell) are arranged in precise positions, thus ensuring effective transport. During SE differentiation, most of the cellular components are heavily modified or even eliminated. This peculiar differentiation implies the selective disintegration of the nucleus (i.e., enucleation) and the loss of cellular translational capacity. However, some cellular components necessary for transport (e.g., plasmalemma) are retained and specific phloem proteins (P-proteins) appear. Likewise, MYB (i.e., APL) and NAC (i.e., NAC45 and NAC86) transcription factors (TFs) and OCTOPUS proteins play a notable role in SE differentiation. The maturing SEs become heavily dependent on neighboring non-conducting companion cells, to which they are connected by plasmodesmata through which only 20-70 kDa compounds seem to be able to pass. The study of sieve tube proteins still has many gaps. However, the development of a protocol to isolate proteins that are free from any contaminating proteins has constituted an important advance. This review considers the very detailed current state of knowledge of both bound and soluble sap proteins, as well as the role played by the companion cells in their presence. Phloem proteins travel long distances by combining two modes: non-selective transport via bulk flow and selective regulated movement. One of the goals of this study is to discover how the protein content of the sieve tube is controlled. The majority of questions and approaches about the heterogeneity of phloem sap will be clarified once the morphology and physiology of the plasmodesmata have been investigated in depth. Finally, the retention of specific proteins inside an SE is an aspect that should not be forgotten.
Collapse
Affiliation(s)
- Angel J Matilla
- Departamento de Biología Funcional, Universidad de Santiago de Compostela, 14971-Santiago de Compostela, Spain
| |
Collapse
|
6
|
Xue X, Wu X, Liu L, Liu L, Zhu F. ERVW-1 Activates ATF6-Mediated Unfolded Protein Response by Decreasing GANAB in Recent-Onset Schizophrenia. Viruses 2023; 15:1298. [PMID: 37376599 DOI: 10.3390/v15061298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/27/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
Schizophrenia, a mental disorder, afflicts 1% of the worldwide population. The dysregulation of homeostasis in the endoplasmic reticulum (ER) has been implicated in schizophrenia. Moreover, recent studies indicate that ER stress and the unfolded protein response (UPR) are linked to this mental disorder. Our previous research has verified that endogenous retrovirus group W member 1 envelope (ERVW-1), a risk factor for schizophrenia, is elevated in individuals with schizophrenia. Nevertheless, no literature is available regarding the underlying relationship between ER stress and ERVW-1 in schizophrenia. The aim of our research was to investigate the molecular mechanism connecting ER stress and ERVW-1 in schizophrenia. Here, we employed Gene Differential Expression Analysis to predict differentially expressed genes (DEGs) in the human prefrontal cortex of schizophrenic patients and identified aberrant expression of UPR-related genes. Subsequent research indicated that the UPR gene called XBP1 had a positive correlation with ATF6, BCL-2, and ERVW-1 in individuals with schizophrenia using Spearman correlation analysis. Furthermore, results from the enzyme-linked immunosorbent assay (ELISA) suggested increased serum protein levels of ATF6 and XBP1 in schizophrenic patients compared with healthy controls, exhibiting a strong correlation with ERVW-1 using median analysis and Mann-Whitney U analysis. However, serum GANAB levels were decreased in schizophrenic patients compared with controls and showed a significant negative correlation with ERVW-1, ATF6, and XBP1 in schizophrenic patients. Interestingly, in vitro experiments verified that ERVW-1 indeed increased ATF6 and XBP1 expression while decreasing GANAB expression. Additionally, the confocal microscope experiment suggested that ERVW-1 could impact the shape of the ER, leading to ER stress. GANAB was found to participate in ER stress regulated by ERVW-1. In conclusion, ERVW-1 induced ER stress by suppressing GANAB expression, thereby upregulating the expression of ATF6 and XBP1 and ultimately contributing to the development of schizophrenia.
Collapse
Affiliation(s)
- Xing Xue
- State Key Laboratory of Virology, Department of Medical Microbiology, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Xiulin Wu
- State Key Laboratory of Virology, Department of Medical Microbiology, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Lijuan Liu
- State Key Laboratory of Virology, Department of Medical Microbiology, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
- Hubei Province Key Laboratory of Allergy & Immunology, Wuhan University, Wuhan 430071, China
| | | | - Fan Zhu
- State Key Laboratory of Virology, Department of Medical Microbiology, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
- Hubei Province Key Laboratory of Allergy & Immunology, Wuhan University, Wuhan 430071, China
| |
Collapse
|
7
|
Liang Y, Bai J, Xie Z, Lian Z, Guo J, Zhao F, Liang Y, Huo H, Gong H. Tomato sucrose transporter SlSUT4 participates in flowering regulation by modulating gibberellin biosynthesis. PLANT PHYSIOLOGY 2023; 192:1080-1098. [PMID: 36943245 PMCID: PMC10231472 DOI: 10.1093/plphys/kiad162] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/14/2023] [Accepted: 02/26/2023] [Indexed: 06/01/2023]
Abstract
The functions of sucrose transporters (SUTs) differ among family members. The physiological function of SUT1 has been studied intensively, while that of SUT4 in various plant species including tomato (Solanum lycopersicum) is less well-understood. In this study, we characterized the function of tomato SlSUT4 in the regulation of flowering using a combination of molecular and physiological analyses. SlSUT4 displayed transport activity for sucrose when expressed in yeast (Saccharomyces cerevisiae), and it localized at both the plasma membrane and tonoplast. SlSUT4 interacted with SlSUT1, causing partial internalization of the latter, the main phloem loader of sucrose in tomato. Silencing of SlSUT4 promoted SlSUT1 localization to the plasma membrane, contributing to increased sucrose export and thus increased sucrose level in the shoot apex, which promoted flowering. Both silencing of SlSUT4 and spraying with sucrose suppressed gibberellin biosynthesis through repression of ent-kaurene oxidase and gibberellin 20-oxidase-1 (2 genes encoding key enzymes in gibberellin biosynthesis) expression by SlMYB76, which directly bound to their promoters. Silencing of SlMYB76 promoted gibberellin biosynthesis. Our results suggest that SlSUT4 is a functional SUT in tomato; downregulation of SlSUT4 expression enhances sucrose transport to the shoot apex, which promotes flowering by inhibiting gibberellin biosynthesis.
Collapse
Affiliation(s)
- Yufei Liang
- Shaanxi Engineering Research Center for Vegetables/College of Horticulture, Northwest A&F University,Yangling, Shaanxi 712100, China
| | - Jiayu Bai
- Shaanxi Engineering Research Center for Vegetables/College of Horticulture, Northwest A&F University,Yangling, Shaanxi 712100, China
| | - Zhilong Xie
- Shaanxi Engineering Research Center for Vegetables/College of Horticulture, Northwest A&F University,Yangling, Shaanxi 712100, China
| | - Zhaoyuan Lian
- Mid-Florida Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, 2725 South Binion Road, Apopka, FL 32703, USA
| | - Jia Guo
- Shaanxi Engineering Research Center for Vegetables/College of Horticulture, Northwest A&F University,Yangling, Shaanxi 712100, China
| | - Feiyang Zhao
- College of Life Sciences, Northwest A&F University,Yangling, Shaanxi 712100, China
| | - Yan Liang
- Shaanxi Engineering Research Center for Vegetables/College of Horticulture, Northwest A&F University,Yangling, Shaanxi 712100, China
| | - Heqiang Huo
- Mid-Florida Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, 2725 South Binion Road, Apopka, FL 32703, USA
| | - Haijun Gong
- Shaanxi Engineering Research Center for Vegetables/College of Horticulture, Northwest A&F University,Yangling, Shaanxi 712100, China
| |
Collapse
|
8
|
Gong HL, Liu JB, Igiraneza C, Dusengemungu L. Sucrose Transporter StSUT2 Affects Potato Plants Growth, Flowering Time, and Tuber Yield. Curr Issues Mol Biol 2023; 45:2629-2643. [PMID: 36975542 PMCID: PMC10047837 DOI: 10.3390/cimb45030172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 03/29/2023] Open
Abstract
BACKGROUND Sucrose transporters (SUTs) mediate sucrose phloem loading in source tissue and sucrose unloading into sink tissue in potatoes and higher plants, thus playing a crucial role in plant growth and development. In potatoes, the physiological function of the sucrose transporters StSUT1 and StSUT4 has been clarified, whereas the physiological role of StSUT2 is not yet fully understood. METHODS AND RESULTS This study analyzed the relative expression of StSUT2 compared to that of StSUT1 and StSUT4 in different tissues from potatoes and its impact on different physiological characteristics by using StSUT2-RNA interference lines. Here, we report a negative effect of StSUT2-RNA interference on plant height, fresh weight, internodes number, leaf area, flowering time, and tuber yield. However, our data indicate that StSUT2 is not involved in carbohydrate accumulation in potato leaves and tubers. In addition, the data of the RNA-seq between the StSUT2-RNA interference line and WT showed that 152 genes were differentially expressed, of which 128 genes were upregulated and 24 genes were downregulated, and the GO and KEGG analyses revealed that differentially expressed genes were mainly related to cell wall composition metabolism. CONCLUSIONS Thus, StSUT2 functions in potato plant growth, flowering time, and tuber yield without affecting carbohydrate accumulation in the leaves and tubers but may be involved in cell wall composition metabolism.
Collapse
Affiliation(s)
- Hui-Ling Gong
- School of Life Sciences and Engineering, Lanzhou University of Technology, 287 Langongping Road, Lanzhou 730050, China
| | - Jin-Bao Liu
- School of Life Sciences and Engineering, Lanzhou University of Technology, 287 Langongping Road, Lanzhou 730050, China
- Guangdong Hybribio Biotech Co., Ltd., Building 2, National Biomedical Industry Base, Yuzhong Park, Lanzhou 730100, China
| | - Clement Igiraneza
- School of Life Sciences and Engineering, Lanzhou University of Technology, 287 Langongping Road, Lanzhou 730050, China
| | - Leonce Dusengemungu
- School of Life Sciences and Engineering, Lanzhou University of Technology, 287 Langongping Road, Lanzhou 730050, China
| |
Collapse
|
9
|
Deng B, Gu X, Chen S, Zhang M, Hao S, Wei L, Cao Y, Hu S. Genome-wide analysis and characterization of Dendrocalamus farinosus SUT gene family reveal DfSUT4 involvement in sucrose transportation in plants. FRONTIERS IN PLANT SCIENCE 2023; 13:1118398. [PMID: 36743582 PMCID: PMC9895956 DOI: 10.3389/fpls.2022.1118398] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 12/23/2022] [Indexed: 06/18/2023]
Abstract
Sucrose is the main transported form of photosynthetic products. Sucrose transporter (SUT) participates in the translocation of sucrose from source to sink, which is important for the growth and development of plants. Dendrocalamus farinosus is an important economic crop in southwestern China because of its high growth rate, high fiber content, and dual usage for food and timber, but the mechanism of sucrose transportation in D. farinosus is unclear. In this study, a total of 12 SUT transporter genes were determined in D. farinosus by whole-genome identification. DfSUT2, DfSUT7, and DfSUT11 were homologs of rice OsSUT2, while DfSUT4 was a homolog of OsSUT4, and these four DfSUT genes were expressed in the leaf, internode, node, and bamboo shoots of D. farinosus. In addition, DfSUT family genes were involved in photosynthetic product distribution, ABA/MeJA responses, and drought resistance, especially DfSUT4. The function of DfSUT4 was then verified in Nicotiana tabacum. DfSUT4 was localized mainly in the leaf mesophyll and stem phloem of pDfSUT4::GUS transgenic plant. The overexpression of DfSUT4 gene in transgenic plant showed increases of photosynthetic rate, above-ground biomass, thousand grain weight, and cellulose content. Our findings altogether indicate that DfSUT4 can be a candidate gene that can be involved in phloem sucrose transportation from the source leaves to the sink organs, phytohormone responses, abiotic stress, and fiber formation in plants, which is very important in the genetic improvement of D. farinosus and other crops.
Collapse
Affiliation(s)
- Bin Deng
- Lab of Plant Cell Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
- Engineering Research Center for Biomass Resource Utilizaiton and Modification of Sichuan Province, Mianyang, Sichuan, China
| | - Xiaoyan Gu
- Lab of Plant Cell Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
- Engineering Research Center for Biomass Resource Utilizaiton and Modification of Sichuan Province, Mianyang, Sichuan, China
| | - Sen Chen
- Lab of Plant Cell Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
- Engineering Research Center for Biomass Resource Utilizaiton and Modification of Sichuan Province, Mianyang, Sichuan, China
| | - Meng Zhang
- Lab of Plant Cell Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
- Engineering Research Center for Biomass Resource Utilizaiton and Modification of Sichuan Province, Mianyang, Sichuan, China
| | - Suwei Hao
- Lab of Plant Cell Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
- Engineering Research Center for Biomass Resource Utilizaiton and Modification of Sichuan Province, Mianyang, Sichuan, China
| | - Lixian Wei
- Lab of Plant Cell Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
- Engineering Research Center for Biomass Resource Utilizaiton and Modification of Sichuan Province, Mianyang, Sichuan, China
| | - Ying Cao
- Lab of Plant Cell Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
- Engineering Research Center for Biomass Resource Utilizaiton and Modification of Sichuan Province, Mianyang, Sichuan, China
| | - Shanglian Hu
- Lab of Plant Cell Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
- Engineering Research Center for Biomass Resource Utilizaiton and Modification of Sichuan Province, Mianyang, Sichuan, China
| |
Collapse
|
10
|
van Bel AJE, Schulz A, Patrick JW. New mosaic fragments toward reconstructing the elusive phloem system. JOURNAL OF PLANT PHYSIOLOGY 2022; 275:153754. [PMID: 35753158 DOI: 10.1016/j.jplph.2022.153754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- Aart J E van Bel
- Institut of Phytopathology, Centre for Biosystems, Land Use and Nutrition, Justus-Liebig University, Heinrich-Buff-Ring 26-32, D-35392 Gieβen, Germany.
| | - Alexander Schulz
- Department of Plant and Environmental Sciences, Thorvaldsensvej 40, 1871 Frederiksberg, Copenhagen, Denmark
| | - John W Patrick
- Centre for Plant Science, School of Environmental and Life Sciences, The University of Newcastle, Callaghan NSW 2308, Australia
| |
Collapse
|
11
|
Bernardini C, Santi S, Mian G, Levy A, Buoso S, Suh JH, Wang Y, Vincent C, van Bel AJE, Musetti R. Increased susceptibility to Chrysanthemum Yellows phytoplasma infection in Atcals7ko plants is accompanied by enhanced expression of carbohydrate transporters. PLANTA 2022; 256:43. [PMID: 35842878 PMCID: PMC9288947 DOI: 10.1007/s00425-022-03954-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 06/27/2022] [Indexed: 05/19/2023]
Abstract
Loss of CALS7 appears to confer increased susceptibility to phytoplasma infection in Arabidopsis, altering expression of genes involved in sugar metabolism and membrane transport. Callose deposition around sieve pores, under control of callose synthase 7 (CALS7), has been interpreted as a mechanical response to limit pathogen spread in phytoplasma-infected plants. Wild-type and Atcals7ko mutants were, therefore, employed to unveil the mode of involvement of CALS7 in the plant's response to phytoplasma infection. The fresh weights of healthy and CY-(Chrysanthemum Yellows) phytoplasma-infected Arabidopsis wild type and mutant plants indicated two superimposed effects of the absence of CALS7: a partial impairment of photo-assimilate transport and a stimulated phytoplasma proliferation as illustrated by a significantly increased phytoplasma titre in Atcal7ko mutants. Further studies solely dealt with the effects of CALS7 absence on phytoplasma growth. Phytoplasma infection affected sieve-element substructure to a larger extent in mutants than in wild-type plants, which was also true for the levels of some free carbohydrates. Moreover, infection induced a similar upregulation of gene expression of enzymes involved in sucrose cleavage (AtSUS5, AtSUS6) and transmembrane transport (AtSWEET11) in mutants and wild-type plants, but an increased gene expression of carbohydrate transmembrane transporters (AtSWEET12, AtSTP13, AtSUC3) in infected mutants only. It remains still unclear how the absence of AtCALS7 leads to gene upregulation and how an increased intercellular mobility of carbohydrates and possibly effectors contributes to a higher susceptibility. It is also unclear if modified sieve-pore structures in mutants allow a better spread of phytoplasmas giving rise to higher titre.
Collapse
Affiliation(s)
- Chiara Bernardini
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, via delle Scienze, 206, 33100, Udine, Italy
| | - Simonetta Santi
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, via delle Scienze, 206, 33100, Udine, Italy
| | - Giovanni Mian
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, via delle Scienze, 206, 33100, Udine, Italy
| | - Amit Levy
- Department of Plant Pathology, Citrus Research and Education Center, University of Florida, 700 Experiment Station Rd, Lake Alfred, FL, 33850, USA
| | - Sara Buoso
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, via delle Scienze, 206, 33100, Udine, Italy
| | - Joon Hyuk Suh
- Department of Food Science and Human Nutrition, Citrus Research and Education Center, University of Florida, 700 Experiment Station Rd, Lake Alfred, FL, 33850, USA
| | - Yu Wang
- Department of Food Science and Human Nutrition, Citrus Research and Education Center, University of Florida, 700 Experiment Station Rd, Lake Alfred, FL, 33850, USA
| | - Christopher Vincent
- Horticultural Sciences Department, Citrus Research and Education Center, University of Florida, 700 Experiment Station Rd, Lake Alfred, FL, 33850, USA
| | - Aart J E van Bel
- Institute of Phytopathology, Justus-Liebig University, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
| | - Rita Musetti
- Department of Land, Environment, Agriculture and Forestry (TESAF), Università di Padova, via dell' Università, 16, 35020, Legnaro, PD, Italy.
| |
Collapse
|