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Zhao G, Liu Y, Li L, Che R, Douglass M, Benza K, Angove M, Luo K, Hu Q, Chen X, Henry C, Li Z, Ning G, Luo H. Gene pyramiding for boosted plant growth and broad abiotic stress tolerance. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:678-697. [PMID: 37902192 PMCID: PMC10893947 DOI: 10.1111/pbi.14216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 09/24/2023] [Accepted: 10/16/2023] [Indexed: 10/31/2023]
Abstract
Abiotic stresses such as salinity, heat and drought seriously impair plant growth and development, causing a significant loss in crop yield and ornamental value. Biotechnology approaches manipulating specific genes prove to be effective strategies in crop trait modification. The Arabidopsis vacuolar pyrophosphatase gene AVP1, the rice SUMO E3 ligase gene OsSIZ1 and the cyanobacterium flavodoxin gene Fld have previously been implicated in regulating plant stress responses and conferring enhanced tolerance to different abiotic stresses when individually overexpressed in various plant species. We have explored the feasibility of combining multiple favourable traits brought by individual genes to acquire superior plant performance. To this end, we have simultaneously introduced AVP1, OsSIZ1 and Fld in creeping bentgrass. Transgenic (TG) plants overexpressing these three genes performed significantly better than wild type controls and the TGs expressing individual genes under both normal and various abiotic stress conditions, exhibited significantly enhanced plant growth and tolerance to drought, salinity and heat stresses as well as nitrogen and phosphate starvation, which were associated with altered physiological and biochemical characteristics and delicately fine-tuned expression of genes involved in plant stress responses. Our results suggest that AVP1, OsSIZ1 and Fld function synergistically to regulate plant development and plant stress response, leading to superior overall performance under both normal and adverse environments. The information obtained provides new insights into gene stacking as an effective approach for plant genetic engineering. A similar strategy can be extended for the use of other beneficial genes in various crop species for trait modifications, enhancing agricultural production.
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Affiliation(s)
- Guiqin Zhao
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
- College of Grassland ScienceGansu Agricultural UniversityLanzhouGansuChina
| | - Yu Liu
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
- College of Landscape ArchitectureNortheast Forestry UniversityHarbinHeilongjiangChina
| | - Lei Li
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
- College of AgronomyHenan Agricultural UniversityZhengzhouHenanChina
| | - Rui Che
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Megan Douglass
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Katherine Benza
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Mitchell Angove
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Kristopher Luo
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Qian Hu
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Xiaotong Chen
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Charles Henry
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Zhigang Li
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
| | - Guogui Ning
- Key laboratory of Horticultural Plant Biology, Ministry of EducationHuazhong Agricultural UniversityWuhanChina
| | - Hong Luo
- Department of Genetics and BiochemistryClemson UniversityClemsonSCUSA
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Cun Z, Li X, Zhang JY, Hong J, Gao LL, Yang J, Ma SY, Chen JW. Identification of candidate genes and residues for improving nitrogen use efficiency in the N-sensitive medicinal plant Panax notoginseng. BMC PLANT BIOLOGY 2024; 24:105. [PMID: 38342903 PMCID: PMC10860327 DOI: 10.1186/s12870-024-04768-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 01/24/2024] [Indexed: 02/13/2024]
Abstract
BACKGROUND Nitrogen (N) metabolism-related key genes and conserved amino acid sites in key enzymes play a crucial role in improving N use efficiency (NUE) under N stress. However, it is not clearly known about the molecular mechanism of N deficiency-induced improvement of NUE in the N-sensitive rhizomatous medicinal plant Panax notoginseng (Burk.) F. H. Chen. To explore the potential regulatory mechanism, the transcriptome and proteome were analyzed and the three-dimensional (3D) information and molecular docking models of key genes were compared in the roots of P. notoginseng grown under N regimes. RESULTS Total N uptake and the proportion of N distribution to roots were significantly reduced, but the NUE, N use efficiency in biomass production (NUEb), the recovery of N fertilizer (RNF) and the proportion of N distribution to shoot were increased in the N0-treated (without N addition) plants. The expression of N uptake- and transport-related genes NPF1.2, NRT2.4, NPF8.1, NPF4.6, AVP, proteins AMT and NRT2 were obviously up-regulated in the N0-grown plants. Meanwhile, the expression of CIPK23, PLC2, NLP6, TCP20, and BT1 related to the nitrate signal-sensing and transduction were up-regulated under the N0 condition. Glutamine synthetase (GS) activity was decreased in the N-deficient plants, while the activity of glutamate dehydrogenase (GDH) increased. The expression of genes GS1-1 and GDH1, and proteins GDH1 and GDH2 were up-regulated in the N0-grown plants, there was a significantly positive correlation between the expression of protein GDH1 and of gene GDH1. Glu192, Glu199 and Glu400 in PnGS1 and PnGDH1were the key amino acid residues that affect the NUE and lead to the differences in GDH enzyme activity. The 3D structure, docking model, and residues of Solanum tuberosum and P. notoginseng was similar. CONCLUSIONS N deficiency might promote the expression of key genes for N uptake (genes NPF8.1, NPF4.6, AMT, AVP and NRT2), transport (NPF1.2 and NRT2.4), assimilation (proteins GS1 and GDH1), signaling and transduction (genes CIPK23, PLC2, NLP6, TCP20, and BT1) to enhance NUE in the rhizomatous species. N deficiency might induce Glu192, Glu199 and Glu400 to improve the biological activity of GS1 and GDH, this has been hypothesized to be the main reason for the enhanced ability of N assimilation in N-deficient rhizomatous species. The key genes and residues involved in improving NUE provide excellent candidates for the breeding of medicinal plants.
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Affiliation(s)
- Zhu Cun
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China
| | - Xia Li
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China
| | - Jin-Yan Zhang
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China
| | - Jie Hong
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China
| | - Li-Lin Gao
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China
| | - Jing Yang
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China
| | - Su-Yun Ma
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, China
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China
| | - Jun-Wen Chen
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, China.
- Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China.
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China.
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Lian B, Wu A, Wu H, Lv X, Sun M, Li Y, Lu Z, Li S, An L, Guo X, Wei F, Fu X, Lu J, Wang H, Ma L, Wei H, Yu S. GhVOZ1-AVP1 module positively regulates salt tolerance in upland cotton (Gossypium hirsutum L.). Int J Biol Macromol 2024; 258:129116. [PMID: 38171192 DOI: 10.1016/j.ijbiomac.2023.129116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/25/2023] [Accepted: 12/26/2023] [Indexed: 01/05/2024]
Abstract
Vascular Plant One‑zinc Finger (VOZ) transcription factor can respond to a variety of abiotic stresses, however its function in cotton and the molecular mechanisms of response to salt tolerance remained unclear. In this study, we found that GhVOZ1 is highly expressed in stamen and stem of cotton under normal conditions. The expression of GhVOZ1 increased significantly after 3 h of salt treatment in three-leaf staged upland cotton. Overexpressed transgenic lines of GhVOZ1 in Arabidopsis and upland cotton were treated with salt stress and we found that GhVOZ1 could respond positively to salt stress. GhVOZ1 can regulate Arabidopsis Vacuolar Proton Pump Pyrophosphatase (H+-PPase) gene (AVP1) expression through specific binding to GCGTCTAAAGTACGC site on GhAVP1 promoter, which was examined through Dual-luciferase assay and Electrophoretic mobility shift assay (EMSA). AVP1 expression was significantly increased in Arabidopsis with GhVOZ1 overexpression, while GhAVP1 expression was decreased in virus induced gene silenced (VIGS) cotton plants of GhVOZ1. Knockdown of GhAVP1 expression in cotton plants by VIGS showed decreased superoxide dismutase (SOD) and peroxidase (POD) activities, whereas an increased malondialdehyde (MDA) content and ultimately decreased salt tolerance. The GhVOZ1-AVP1 module could maintain sodium ion homeostasis through cell ion transport and positively regulate the salt tolerance in cotton, providing new ideas and insights for the study of salt tolerance.
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Affiliation(s)
- Boying Lian
- College of Agronomy, Northwest A&F University, Yangling 712100, Shannxi, China
| | - Aimin Wu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Hongmei Wu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Xiaoyan Lv
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Mengxi Sun
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Yiran Li
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Zhengying Lu
- Handan Academy of Agricultural Sciences, Handan 056000, Hebei, China
| | - Shiyun Li
- Handan Academy of Agricultural Sciences, Handan 056000, Hebei, China
| | - Li An
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Xiaohao Guo
- College of Agronomy, Northwest A&F University, Yangling 712100, Shannxi, China
| | - Fei Wei
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Xiaokang Fu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Jianhua Lu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Hantao Wang
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Liang Ma
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
| | - Hengling Wei
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China.
| | - Shuxun Yu
- College of Agronomy, Northwest A&F University, Yangling 712100, Shannxi, China.
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Yin Y, Fan S, Li S, Amombo E, Fu J. Involvement of cell cycle and ion transferring in the salt stress responses of alfalfa varieties at different development stages. BMC PLANT BIOLOGY 2023; 23:343. [PMID: 37370008 PMCID: PMC10294350 DOI: 10.1186/s12870-023-04335-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023]
Abstract
BACKGROUND Alfalfa (Medicago sativa) is the worldwide major feed crop for livestock. However, forage quality and productivity are reduced by salt stress, which is a common issue in alfalfa-growing regions. The relative salt tolerance is changed during plant life cycle. This research aimed to investigate the relative salt tolerance and the underlying mechanisms of two alfalfa varieties at different developmental stages. RESULTS Two alfalfa varieties, "Zhongmu No.1 (ZM1)" and "D4V", with varying salt tolerance, were subjected to salt stress (0, 100, 150 mM NaCl). When the germinated seeds were exposed to salt stress, D4V exhibited enhanced primary root growth compared to ZM1 due to the maintenance of meristem size, sustained or increased expression of cell cycle-related genes, greater activity of antioxidant enzymes and higher level of IAA. These findings indicated that D4V was more tolerant than ZM1 at early developmental stage. However, when young seedlings were exposed to salt stress, ZM1 displayed a lighter wilted phenotype and leaf cell death, higher biomass and nutritional quality, lower relative electrolytic leakage (EL) and malondialdehyde (MDA) concentration. In addition, ZM1 obtained a greater antioxidant capacity in leaves, indicated by less accumulation of hydrogen peroxide (H2O2) and higher activity of antioxidant enzymes. Further ionic tissue-distribution analysis identified that ZM1 accumulated less Na+ and more K+ in leaves and stems, resulting in lower Na+/K+ ratio, because of possessing higher expression of ion transporters and sensitivity of stomata closure. Therefore, the relative salt tolerance of ZM1 and D4V was reversed at young seedling stages, with the young seedlings of the former being more salt-tolerant. CONCLUSION Our data revealed the changes of relative order of salt tolerance between alfalfa varieties as they develop. Meristem activity in primary root tips and ion transferring at young seedling stages were underlying mechanisms that resulted in differences in salt tolerance at different developmental stages.
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Affiliation(s)
- YanLing Yin
- Coastal Salinity Tolerant Grass Engineering and Technology Research Center, Ludong University, Yantai, Shandong, People's Republic of China
| | - ShuGao Fan
- Coastal Salinity Tolerant Grass Engineering and Technology Research Center, Ludong University, Yantai, Shandong, People's Republic of China
| | - Shuang Li
- Coastal Salinity Tolerant Grass Engineering and Technology Research Center, Ludong University, Yantai, Shandong, People's Republic of China
| | - Erick Amombo
- Coastal Salinity Tolerant Grass Engineering and Technology Research Center, Ludong University, Yantai, Shandong, People's Republic of China
| | - JinMin Fu
- Coastal Salinity Tolerant Grass Engineering and Technology Research Center, Ludong University, Yantai, Shandong, People's Republic of China.
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Zhang H, Chen M, Xu C, Liu R, Tang W, Chen K, Zhou Y, Xu Z, Chen J, Ma Y, Chen W, Sun D, Fan H. H +-pyrophosphatases enhance low nitrogen stress tolerance in transgenic Arabidopsis and wheat by interacting with a receptor-like protein kinase. FRONTIERS IN PLANT SCIENCE 2023; 14:1096091. [PMID: 36778714 PMCID: PMC9912985 DOI: 10.3389/fpls.2023.1096091] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/09/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Nitrogen is a major abiotic stress that affects plant productivity. Previous studies have shown that plant H+-pyrophosphatases (H+-PPases) enhance plant resistance to low nitrogen stress. However, the molecular mechanism underlying H+-PPase-mediated regulation of plant responses to low nitrogen stress is still unknown. In this study, we aimed to investigate the regulatory mechanism of AtAVP1 in response to low nitrogen stress. METHODS AND RESULTS AtAVP1 in Arabidopsis thaliana and EdVP1 in Elymus dahuricus belong to the H+-PPase gene family. In this study, we found that AtAVP1 overexpression was more tolerant to low nitrogen stress than was wild type (WT), whereas the avp1-1 mutant was less tolerant to low nitrogen stress than WT. Plant height, root length, aboveground fresh and dry weights, and underground fresh and dry weights of EdVP1 overexpression wheat were considerably higher than those of SHI366 under low nitrogen treatment during the seedling stage. Two consecutive years of low nitrogen tolerance experiments in the field showed that grain yield and number of grains per spike of EdVP1 overexpression wheat were increased compared to those in SHI366, which indicated that EdVP1 conferred low nitrogen stress tolerance in the field. Furthermore, we screened interaction proteins in Arabidopsis; subcellular localization analysis demonstrated that AtAVP1 and Arabidopsis thaliana receptor-like protein kinase (AtRLK) were located on the plasma membrane. Yeast two-hybrid and luciferase complementary imaging assays showed that the AtRLK interacted with AtAVP1. Under low nitrogen stress, the Arabidopsis mutants rlk and avp1-1 had the same phenotypes. DISCUSSION These results indicate that AtAVP1 regulates low nitrogen stress responses by interacting with AtRLK, which provides a novel insight into the regulatory pathway related to H+-pyrophosphatase function in plants.
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Affiliation(s)
- Huijuan Zhang
- College of Agriculture, Shanxi Agricultural University, Shanxi, China
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Ming Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Chengjie Xu
- College of Agriculture, Shanxi Agricultural University, Shanxi, China
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Rongbang Liu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Wensi Tang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Kai Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Yongbin Zhou
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Zhaoshi Xu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Jun Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Youzhi Ma
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Weiguo Chen
- College of Agriculture, Shanxi Agricultural University, Shanxi, China
| | - Daizhen Sun
- College of Agriculture, Shanxi Agricultural University, Shanxi, China
| | - Hua Fan
- College of Agriculture, Shanxi Agricultural University, Shanxi, China
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Zhou S, Wang P, Ding Y, Xie L, Li A. Modification of plasma membrane H+-ATPase in Masson pine (Pinus massoniana Lamb.) seedling roots adapting to acid deposition. TREE PHYSIOLOGY 2022; 42:1432-1449. [PMID: 35137231 DOI: 10.1093/treephys/tpac015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
To understand the regulation of roots plasma membrane H+-ATPase in Masson pine responding to acid deposition, the changes in biomass, plant morphology, intracellular H+, enzyme activity and H+-ATPase genes expression in Masson pine seedlings exposed to simulated acid rain (SAR, pH 5.6 and 4.6) with and without vanadate were studied. Simulated acid rain exposure for 60 days increased the intracellular H+ in pine roots whether added with 0.1 mM Na3VO4 or not. The growth of seedlings treated with SAR was maintained well, even the primary lateral root length, root dry weight and number of root tips in seedlings exposed to SAR at pH 4.6 were higher than that of the control (pH 6.6). However, the addition of vanadate resulted in severe growth inhibition and obvious decline in morphological parameters. Similarly, ATP hydrolytic activity and H+ transport activity of roots plasma membrane H+-ATPase, both were stimulated by SAR whereas they were inhibited by vanadate, and the highest activity stimulation was observed in pine roots subjected to SAR at pH 4.6. In addition, SAR also induced the expression of the investigated H+-ATPase subunits (atpB, atpE, atpF, atpH and atpI). Therefore, the roots plasma membrane H+-ATPase is instrumental in the growth of Masson pine seedlings adapting to acid rain by a manner of pumping more protons across the membrane through enhancing its activity, and which involves the upregulated gene expression of roots H+-ATPase subunits at transcriptional level.
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Affiliation(s)
- Sijie Zhou
- Department of Ecology, College of Biology and the Environment, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, P.R. China
- Key Laboratory of Forest Genetics & Biotechnology of Ministry of Education, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, P.R. China
| | - Ping Wang
- Department of Ecology, College of Biology and the Environment, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, P.R. China
- Key Laboratory of Forest Genetics & Biotechnology of Ministry of Education, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, P.R. China
| | - Yi Ding
- Department of Ecology, College of Biology and the Environment, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, P.R. China
- Key Laboratory of Forest Genetics & Biotechnology of Ministry of Education, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, P.R. China
| | - Linbei Xie
- Department of Ecology, College of Biology and the Environment, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, P.R. China
- Key Laboratory of Forest Genetics & Biotechnology of Ministry of Education, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, P.R. China
| | - Ao Li
- Department of Ecology, College of Biology and the Environment, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, P.R. China
- Key Laboratory of Forest Genetics & Biotechnology of Ministry of Education, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, P.R. China
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Xu T, Wang Y, Aytac Z, Zuverza-Mena N, Zhao Z, Hu X, Ng KW, White JC, Demokritou P. Enhancing Agrichemical Delivery and Plant Development with Biopolymer-Based Stimuli Responsive Core-Shell Nanostructures. ACS NANO 2022; 16:6034-6048. [PMID: 35404588 DOI: 10.1021/acsnano.1c11490] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The inefficient delivery of agrichemicals in agrifood systems is among the leading cause of serious negative planetary and public health impacts. Such inefficiency is mainly attributed to the inability to deliver the agrichemicals at the right place (target), right time, and right dose. In this study, scalable, biodegradable, sustainable, biopolymer-based multistimuli responsive core-shell nanostructures were developed for smart agrichemical delivery. Three types of responsive core/shell nanostructures incorporated with model agrichemicals (i.e., CuSO4 and NPK fertilizer) were synthesized by coaxial electrospray, and the resulting nanostructures showed spherical morphology with an average diameter about 160 nm. Tunable agrichemical release kinetics were achieved by controlling the surface hydrophobicity of nanostructures. The pH and enzyme responsiveness was also demonstrated by the model analyte release kinetics (up to 7 days) in aqueous solution. Finally, the efficacy of the stimuli responsive nanostructures was evaluated in soil-based greenhouse studies using soybean and wheat in terms of photosynthesis efficacy and linear electron flow (LEF), two important metrics for seedling development and health. Findings confirmed plant specificity; for soybean, the nanostructures resulted in 34.3% higher value of relative chlorophyll content and 41.2% higher value of PS1 centers in photosystem I than the ionic control with equivalent agrichemical concentration. For wheat, the nanostructures resulted in 37.6% higher value of LEF than the ionic agrichemicals applied at 4 times higher concentration, indicating that the responsive core-shell nanostructure is an effective platform to achieve precision agrichemical delivery while minimizing inputs. Moreover, the Zn and Na content in the leaves of 4-week-old soybean seedlings were significantly increased with nanostructure amendment, indicating that the developed nanostructures can potentially be used to modulate the accumulation of other important micronutrients through a potential biofortification strategy.
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Affiliation(s)
- Tao Xu
- Center for Nanotechnology and Nanotoxicology, Harvard T. H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, United States
- Nanoscience and Advanced Materials Center, Environmental and Occupational Health Sciences Institute (EOHSI), School of Public Health, Rutgers University, Piscataway, New Jersey 08854, United States
| | - Yi Wang
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, Connecticut 06504, United States
| | - Zeynep Aytac
- Center for Nanotechnology and Nanotoxicology, Harvard T. H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, United States
| | - Nubia Zuverza-Mena
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, Connecticut 06504, United States
| | - Zhitong Zhao
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
| | - Xiao Hu
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
- Environmental Chemistry and Materials Centre, Nanyang Environment and Water Research Institute, 637141, Singapore
| | - Kee Woei Ng
- Center for Nanotechnology and Nanotoxicology, Harvard T. H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, United States
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
- Environmental Chemistry and Materials Centre, Nanyang Environment and Water Research Institute, 637141, Singapore
| | - Jason C White
- Center for Nanotechnology and Nanotoxicology, Harvard T. H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, United States
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, Connecticut 06504, United States
| | - Philip Demokritou
- Center for Nanotechnology and Nanotoxicology, Harvard T. H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, United States
- Nanoscience and Advanced Materials Center, Environmental and Occupational Health Sciences Institute (EOHSI), School of Public Health, Rutgers University, Piscataway, New Jersey 08854, United States
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
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8
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Fu L, Wu D, Zhang X, Xu Y, Kuang L, Cai S, Zhang G, Shen Q. Vacuolar H+-pyrophosphatase HVP10 enhances salt tolerance via promoting Na+ translocation into root vacuoles. PLANT PHYSIOLOGY 2022; 188:1248-1263. [PMID: 34791461 PMCID: PMC8825340 DOI: 10.1093/plphys/kiab538] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/25/2021] [Indexed: 05/06/2023]
Abstract
Vacuolar H+-pumping pyrophosphatases (VPs) provide a proton gradient for Na+ sequestration in the tonoplast; however, the regulatory mechanisms of VPs in developing salt tolerance have not been fully elucidated. Here, we cloned a barley (Hordeum vulgare) VP gene (HVP10) that was identified previously as the HvNax3 gene. Homology analysis showed VP10 in plants had conserved structure and sequence and likely originated from the ancestors of the Ceramiales order of Rhodophyta (Cyanidioschyzon merolae). HVP10 was mainly expressed in roots and upregulated in response to salt stress. After salt treatment for 3 weeks, HVP10 knockdown (RNA interference) and knockout (CRISPR/Cas9 gene editing) barley plants showed greatly inhibited growth and higher shoot Na+ concentration, Na+ transportation rate and xylem Na+ loading relative to wild-type (WT) plants. Reverse transcription quantitative polymerase chain reaction and microelectronic Ion Flux Estimation results indicated that HVP10 likely modulates Na+ sequestration into the root vacuole by acting synergistically with Na+/H+ antiporters (HvNHX1 and HvNHX4) to enhance H+ efflux and K+ maintenance in roots. Moreover, transgenic rice (Oryza sativa) lines overexpressing HVP10 also showed higher salt tolerance than the WT at both seedling and adult stages with less Na+ translocation to shoots and higher grain yields under salt stress. This study reveals the molecular mechanism of HVP10 underlying salt tolerance and highlights its potential in improving crop salt tolerance.
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Affiliation(s)
- Liangbo Fu
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Dezhi Wu
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Xincheng Zhang
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Yunfeng Xu
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Liuhui Kuang
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Shengguan Cai
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
- Zhongyuan Institute, Zhejiang University, Zhengzhou 450000, China
| | - Guoping Zhang
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
- Zhongyuan Institute, Zhejiang University, Zhengzhou 450000, China
| | - Qiufang Shen
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
- Zhongyuan Institute, Zhejiang University, Zhengzhou 450000, China
- Author for communication:
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9
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Thiol-ene Click Chemistry Using Triethylamine Gas as a Promoter to Make Coated Slow-release Fertilizer. CHEMICAL ENGINEERING JOURNAL ADVANCES 2021. [DOI: 10.1016/j.ceja.2021.100189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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10
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Menadue DJ, Riboni M, Baumann U, Schilling RK, Plett DC, Roy SJ. Proton-pumping pyrophosphatase homeolog expression is a dynamic trait in bread wheat ( Triticum aestivum). PLANT DIRECT 2021; 5:e354. [PMID: 34646976 PMCID: PMC8496507 DOI: 10.1002/pld3.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/20/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Proton-pumping pyrophosphatases (H+-PPases) have been shown to enhance biomass and yield. However, to date, there has been little work towards identify genes encoding H+-PPases in bread wheat (Triticum aestivum) (TaVPs) and limited knowledge on how the expression of these genes varies across different growth stages and tissue types. In this study, the IWGSC database was used to identify two novel TaVP genes, TaVP4 and TaVP5, and elucidate the complete homeolog sequences of the three known TaVP genes, bringing the total number of bread wheat TaVPs from 9 to 15. Gene expression levels of each TaVP homeolog were assessed using quantitative real-time PCR (qRT-PCR) in four diverse wheat varieties in terms of phenotypic traits related to high vacuolar pyrophosphatase expression. Homeolog expression was analyzed across multiple tissue types and developmental stages. Expression levels of the TaVP homeologs were found to vary significantly between varieties, tissues and plant developmental stages. During early development (Z10 and Z13), expressions of TaVP1 and TaVP2 homeologs were higher in shoot tissue than root tissue, with both shoot and root expression increasing in later developmental stages (Z22). TaVP2-D was expressed in all varieties and tissue types and was the most highly expressed homeolog at all developmental stages. Expression of the TaVP3 homeologs was restricted to developing grain (Z75), while TaVP4 homeolog expression was higher at Z22 than earlier developmental stages. Variation in TaVP4B was detected among varieties at Z22 and Z75, with Buck Atlantico (high biomass) and Scout (elite Australian cultivar) having the highest levels of expression. These findings offer a comprehensive overview of the bread wheat H+-PPase family and identify variation in TaVP homeolog expression that will be of use to improve the growth, yield, and abiotic stress tolerance of bread wheat.
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Affiliation(s)
- Daniel Jamie Menadue
- School of Agriculture, Food and WineUniversity of AdelaideAdelaideSouth AustraliaAustralia
- Australian Centre for Plant Functional GenomicsThe University of AdelaideUrrbraeSouth AustraliaAustralia
| | - Matteo Riboni
- School of Agriculture, Food and WineUniversity of AdelaideAdelaideSouth AustraliaAustralia
- Australian Centre for Plant Functional GenomicsThe University of AdelaideUrrbraeSouth AustraliaAustralia
| | - Ute Baumann
- School of Agriculture, Food and WineUniversity of AdelaideAdelaideSouth AustraliaAustralia
- Australian Centre for Plant Functional GenomicsThe University of AdelaideUrrbraeSouth AustraliaAustralia
| | - Rhiannon Kate Schilling
- School of Agriculture, Food and WineUniversity of AdelaideAdelaideSouth AustraliaAustralia
- Australian Centre for Plant Functional GenomicsThe University of AdelaideUrrbraeSouth AustraliaAustralia
- Department of Primary Industries and RegionsSouth Australian Research and Development InstituteUrrbraeSouth AustraliaAustralia
| | - Darren Craig Plett
- School of Agriculture, Food and WineUniversity of AdelaideAdelaideSouth AustraliaAustralia
- Australian Plant Phenomics Facility, The Plant AcceleratorThe University of AdelaideAdelaideSouth AustraliaAustralia
| | - Stuart John Roy
- School of Agriculture, Food and WineUniversity of AdelaideAdelaideSouth AustraliaAustralia
- Australian Centre for Plant Functional GenomicsThe University of AdelaideUrrbraeSouth AustraliaAustralia
- ARC Industrial Transformation Research Hub for Wheat in a Hot and Dry ClimateUniversity of AdelaideAdelaideSouth AustraliaAustralia
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11
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Fan W, Zhang Y, Wu Y, Zhou W, Yang J, Yuan L, Zhang P, Wang H. The H +-pyrophosphatase IbVP1 regulates carbon flux to influence the starch metabolism and yield of sweet potato. HORTICULTURE RESEARCH 2021; 8:20. [PMID: 33518705 PMCID: PMC7847997 DOI: 10.1038/s41438-020-00454-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 11/19/2020] [Accepted: 11/28/2020] [Indexed: 05/10/2023]
Abstract
Storage roots of sweet potato are important sink organs for photoassimilates and energy, and carbohydrate metabolism in storage roots affects yield and starch production. Our previous study showed that sweet potato H+-pyrophosphatase (IbVP1) plays a vital role in mitigating iron deficiency and positively controls fibrous root growth. However, its roles in regulating starch production in storage roots have not been investigated. In this study, we found that IbVP1 overexpression in sweet potato improved the photosynthesis ability of and sucrose content in source leaves and increased both the starch content in and total yield of sink tissues. Using 13C-labeled sucrose feeding, we determined that IbVP1 overexpression promotes phloem loading and sucrose long-distance transport and enhances Pi-use efficiency. In sweet potato plants overexpressing IbVP1, the expression levels of starch biosynthesis pathway genes, especially AGPase and GBSSI, were upregulated, leading to changes in the structure, composition, and physicochemical properties of stored starch. Our study shows that the IbVP1 gene plays an important role in regulating starch metabolism in sweet potato. Application of the VP1 gene in genetic engineering of sweet potato cultivars may allow the improvement of starch production and yield under stress or nutrient-limited conditions.
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Affiliation(s)
- Weijuan Fan
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai, 201602, China
| | - Yandi Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yinliang Wu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenzhi Zhou
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jun Yang
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai, 201602, China
| | - Ling Yuan
- Department of Plant and Soil Sciences and Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY, 40546, USA
| | - Peng Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Hongxia Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
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12
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Ramos AC, Melo J, de Souza SB, Bertolazi AA, Silva RA, Rodrigues WP, Campostrini E, Olivares FL, Eutrópio FJ, Cruz C, Dias T. Inoculation with the endophytic bacterium Herbaspirillum seropedicae promotes growth, nutrient uptake and photosynthetic efficiency in rice. PLANTA 2020; 252:87. [PMID: 33057912 DOI: 10.1007/s00425-020-03496-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
Higher vacuolar proton pump activity may increase plant energy and nutrient use efficiency and provide the nexus between plant inoculation with Herbaspirillum seropedicae and growth promotion. Global change and growing human population are exhausting arable land and resources, including water and fertilizers. We present inoculation with the endophytic plant-growth promoting bacterium (PGPB) Herbaspirillum seropedicae as a strategy for promoting growth, nutrient uptake and photosynthetic efficiency in rice (Oryza sativa L.). Because plant nutrient acquisition is coordinated with photosynthesis and the plant carbon status, we hypothesize that inoculation with H. seropedicae will stimulate proton (H+) pumps, increasing plant growth nutrient uptake and photosynthetic efficiency at low nutrient levels. Plants were inoculated and grown in pots with sterile soil for 90 days. Herbaspirillum seropedicae endophytic colonization was successful and, as hypothesized, inoculation (1) stimulated root vacuolar H+ pumps (vacuolar H+-ATPase and vacuolar H+-PPase), and (2) increased plant growth, nutrient contents and photosynthetic efficiency. The results showed that inoculation with the endophytic bacterium H. seropedicae can promote plant growth, nutrient uptake and photosynthetic efficiency, which will likely result in a more efficient use of resources (nutrients and water) and higher production of nutrient-rich food at reduced economic and environmental costs.
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Affiliation(s)
- Alessandro C Ramos
- Environmental Microbiology and Biotechnology Lab, Universidade Vila Velha (UVV), Vila Velha, ES, Brazil
| | - Juliana Melo
- Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Sávio B de Souza
- Environmental Microbiology and Biotechnology Lab, Universidade Vila Velha (UVV), Vila Velha, ES, Brazil
| | - Amanda A Bertolazi
- Environmental Microbiology and Biotechnology Lab, Universidade Vila Velha (UVV), Vila Velha, ES, Brazil
| | - Renderson A Silva
- Environmental Microbiology and Biotechnology Lab, Universidade Vila Velha (UVV), Vila Velha, ES, Brazil
| | - Weverton P Rodrigues
- Plant Physiology Lab, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, Brazil
| | - Eliemar Campostrini
- Plant Physiology Lab, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, Brazil
| | - Fábio L Olivares
- Cell Tissue and Biology Lab, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, Brazil
| | - Frederico J Eutrópio
- Environmental Microbiology and Biotechnology Lab, Universidade Vila Velha (UVV), Vila Velha, ES, Brazil
| | - Cristina Cruz
- Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Teresa Dias
- Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal.
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13
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Nepal N, Yactayo-Chang JP, Gable R, Wilkie A, Martin J, Aniemena CL, Gaxiola R, Lorence A. Phenotypic characterization of Arabidopsis thaliana lines overexpressing AVP1 and MIOX4 in response to abiotic stresses. APPLICATIONS IN PLANT SCIENCES 2020; 8:e11384. [PMID: 32995104 PMCID: PMC7507355 DOI: 10.1002/aps3.11384] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 05/29/2020] [Indexed: 05/09/2023]
Abstract
PREMISE AVP1 (H+-pyrophosphatase) and MIOX4 (myo-inositol oxygenase) are genes that, when overexpressed individually, enhance the growth and abiotic stress tolerance of Arabidopsis thaliana plants. We propose that pyramiding AVP1 and MIOX4 genes will further improve stress tolerance under water-limited and salt-stress conditions. METHODS MIOX4 and AVP1 reciprocal crosses were developed and phenomic approaches used to investigate the possible synergy between these genes. RESULTS Under normal and stress conditions, the crosses had higher foliar ascorbate content than the wild-type and parental lines. Under water-limited conditions, the crosses also displayed an enhanced growth rate and biomass compared with the control. The observed increases in photosystem II efficiency, linear electron flow, and relative chlorophyll content may have contributed to this observed phenotype. Additionally, the crosses retained more water than the controls when subjected to salt stress. Higher seed yields were also observed in the crosses compared with the controls when grown under salt and water-limitation stresses. DISCUSSION Overall, these results suggest the combinatorial effect of overexpressing MIOX4 and AVP1 may be more advantageous than the individual traits for enhancing stress tolerance and seed yields during crop improvement.
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Affiliation(s)
- Nirman Nepal
- Arkansas Biosciences Institute Arkansas State University P.O. Box 639, State University Arkansas 72467 USA
| | - Jessica P Yactayo-Chang
- Arkansas Biosciences Institute Arkansas State University P.O. Box 639, State University Arkansas 72467 USA
| | - Ricky Gable
- Arkansas Biosciences Institute Arkansas State University P.O. Box 639, State University Arkansas 72467 USA
| | - Austin Wilkie
- Arkansas Biosciences Institute Arkansas State University P.O. Box 639, State University Arkansas 72467 USA
| | - Jazmin Martin
- Arkansas Biosciences Institute Arkansas State University P.O. Box 639, State University Arkansas 72467 USA
| | - Chineche L Aniemena
- Arkansas Biosciences Institute Arkansas State University P.O. Box 639, State University Arkansas 72467 USA
| | - Roberto Gaxiola
- School of Life Sciences Arizona State University-Tempe P.O. Box 4501 Tempe Arizona 85821 USA
| | - Argelia Lorence
- Arkansas Biosciences Institute Arkansas State University P.O. Box 639, State University Arkansas 72467 USA
- Department of Chemistry and Physics Arkansas State University P.O. Box 419, State University Arkansas 72467 USA
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14
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Overexpression of V-type H + pyrophosphatase gene EdVP1 from Elymus dahuricus increases yield and potassium uptake of transgenic wheat under low potassium conditions. Sci Rep 2020; 10:5020. [PMID: 32193452 PMCID: PMC7081212 DOI: 10.1038/s41598-020-62052-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 03/06/2020] [Indexed: 11/14/2022] Open
Abstract
Lack of potassium in soil limits crop yield. Increasing yield and conserving potassium ore requires improving K use efficiency (KUE). Many genes influence KUE in plants, but it is not clear how these genes function in the field. We identified the V-type H+-pyrophosphatase gene EdVP1 from Elymus dahurica. Gene expression analysis showed that EdVP1 was induced by low potassium stress. Protein subcellular localization analysis demonstrated that EdVP1 localized on the plasma membrane. We overexpressed EdVP1 in two wheat varieties and conducted K tolerance experiments across years. Yield per plant, grain number per spike, plant height, and K uptake of four transgenic wheat lines increased significantly compared with WT; results from two consecutive years showed that EdVP1 significantly increased yield and KUE of transgenic wheat. Pot experiments showed that transgenic plants had significantly longer shoots and roots, and higher K accumulation in shoots and roots and H+-PPase activity in shoots than WT under low K. A fluidity assay of potassium ion in EdVP1 transgenic plant roots showed that potassium ion influx and H+ outflow in transgenic plants were higher than WT. Overexpressing EdVP1 significantly improved yield and KUE of transgenic wheat and was related to higher K uptake capacity in root.
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15
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Heuchan SM, Fan B, Kowalski JJ, Gillies ER, Henry HAL. Development of Fertilizer Coatings from Polyglyoxylate-Polyester Blends Responsive to Root-Driven pH Change. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12720-12729. [PMID: 31652059 DOI: 10.1021/acs.jafc.9b04717] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Many current controlled-release fertilizers (CRFs) are coated with nonbiodegradable polymers that can contribute to microplastic pollution. Here, coatings of self-immolative poly(ethyl glyoxylate) (PEtG) capped with a carbamate and blended with polycaprolactone (PCL) or poly(l-lactic acid) (PLA) were evaluated. They were designed to depolymerize and release fertilizers in the vicinity of plant roots, where the pH is lower than that in the surrounding environment. PEtG/PCL coatings exhibited significant temperature and pH effects, requiring 18 days at pH 5 and 30 °C, compared to 77 days at pH 7 and 22 °C, to reach 15% mass loss. Plant roots were also effective in triggering coating degradation. Spray-coating and melt-coating were explored, with the latter being more effective in providing pellets that retained urea prior to polymer degradation. Finally, PEtG/PCL-coated pellets promoted plant growth to a similar degree or better than currently available CRFs.
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16
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Primo C, Pizzio GA, Yang J, Gaxiola RA, Scholz-Starke J, Hirschi KD. Plant proton pumping pyrophosphatase: the potential for its pyrophosphate synthesis activity to modulate plant growth. PLANT BIOLOGY (STUTTGART, GERMANY) 2019; 21:989-996. [PMID: 31081197 DOI: 10.1111/plb.13007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/09/2019] [Indexed: 05/25/2023]
Abstract
Cellular pyrophosphate (PPi) homeostasis is vital for normal plant growth and development. Plant proton-pumping pyrophosphatases (H+ -PPases) are enzymes with different tissue-specific functions related to the regulation of PPi homeostasis. Enhanced expression of plant H+ -PPases increases biomass and yield in different crop species. Here, we emphasise emerging studies utilising heterologous expression in yeast and plant vacuole electrophysiology approaches, as well as phylogenetic relationships and structural analysis, to showcase that the H+ -PPases possess a PPi synthesis function. We postulate this synthase activity contributes to modulating and promoting plant growth both in H+ -PPase-engineered crops and in wild-type plants. We propose a model where the PPi synthase activity of H+ -PPases maintains the PPi pool when cells adopt PPi-dependent glycolysis during high energy demands and/or low oxygen environments. We conclude by proposing experiments to further investigate the H+ -PPase-mediated PPi synthase role in plant growth.
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Affiliation(s)
- C Primo
- Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX, USA
| | - G A Pizzio
- Center for Research in Agricultural Genomics, Consejo Superior de Investigaciones Científicas, Barcelona, Spain
| | - J Yang
- Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX, USA
| | - R A Gaxiola
- School of Life Sciences, Arizona State University, Tempe, AZ, USA
| | - J Scholz-Starke
- Institute of Biophysics, Consiglio Nazionale delle Ricerche, Genova, Italy
| | - K D Hirschi
- Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX, USA
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Vergara C, Araujo KEC, Sperandio MVL, Santos LA, Urquiaga S, Zilli JÉ. Dark septate endophytic fungi increase the activity of proton pumps, efficiency of 15N recovery from ammonium sulphate, N content, and micronutrient levels in rice plants. Braz J Microbiol 2019; 50:825-838. [PMID: 31090019 PMCID: PMC6863334 DOI: 10.1007/s42770-019-00092-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 05/04/2019] [Indexed: 11/25/2022] Open
Abstract
Plants colonised by dark septate endophytic (DSE) fungi show increased uptake of nutrients available in the environment. The objective of the present study was to evaluate the impact of DSE fungi on the activity of proton pumps, nitrogen (N) recovery from ammonium sulphate, and nutrient accumulation in rice plants. Treatments consisted of non-inoculated plants and plants inoculated with two isolates of DSE fungi, A101 and A103. To determine N recovery from the soil, ammonium sulphate enriched with 15N was added to a non-sterile substrate while parameters associated with the activity of proton pumps and with NO3- uptake were determined in a sterile environment. The A101 and A103 fungal isolates colonised the roots of rice plants, promoting 15N uptake, growth, and accumulation of nutrients as compared with the mock control. A103 induced the expression of the plasma membrane H+-ATPase (PM H+-ATPase) isoforms OsA5 and OsA8, the activity of the PM H+-ATPase and H+-pyrophosphatase. Our results suggest that the inoculation of rice plants with DSE fungi represents a strategy to improve the N recovery from ammonium sulphate and rice plant growth through the induction of OsA5 and OsA8 isoforms and stimulation of the PM H+-ATPase and H+-pyrophosphatase.
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Affiliation(s)
- Carlos Vergara
- Universidade Federal Rural do Rio de Janeiro, Instituto de Agronomia, Seropédica, RJ, Brazil
| | | | | | - Leandro Azevedo Santos
- Universidade Federal Rural do Rio de Janeiro, Instituto de Agronomia, Seropédica, RJ, Brazil
| | - Segundo Urquiaga
- Embrapa Agrobiologia, BR 465, km 07, Seropédica, RJ, 23891-000, Brazil
| | - Jerri Édson Zilli
- Embrapa Agrobiologia, BR 465, km 07, Seropédica, RJ, 23891-000, Brazil.
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Co-overexpression of AVP1 and OsSIZ1 in Arabidopsis substantially enhances plant tolerance to drought, salt, and heat stresses. Sci Rep 2019; 9:7642. [PMID: 31113977 PMCID: PMC6529626 DOI: 10.1038/s41598-019-44062-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 05/03/2019] [Indexed: 12/30/2022] Open
Abstract
Abiotic stresses such as water deficit, salt, and heat are major environmental factors that negatively affect plant growth, development, and productivity. Previous studies showed that overexpression of the Arabidopsis vacuolar H+-pyrophosphatase gene AVP1 increases salt and water deficit stress tolerance and overexpression of the rice SUMO E3 ligase gene OsSIZ1 improves heat and water deficit stress tolerance in transgenic plants. In this report, the effects of co-overexpression of AVP1 and OsSIZ1 in Arabidopsis on abiotic stress tolerance were studied. It was found that AVP1/OsSIZ1 co-overexpressing plants performed significantly better than AVP1-overexpressing plants and OsSIZ1-overexpressing plants, and produced 100% more seed than wild-type plants under single stress or multiple stress conditions. The increased stress tolerance in AVP1/OsSIZ1 co-overexpressing plants was substantially larger than the increased stress tolerance in AVP1-overexpressing plants and OsSIZ1-overexpressing plants under every abiotic stress condition tested. This research provides the proof-of-concept that crop yields might be substantially improved using this approach.
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Bertolazi AA, de Souza SB, Ruas KF, Campostrini E, de Rezende CE, Cruz C, Melo J, Colodete CM, Varma A, Ramos AC. Inoculation With Piriformospora indica Is More Efficient in Wild-Type Rice Than in Transgenic Rice Over-Expressing the Vacuolar H +-PPase. Front Microbiol 2019; 10:1087. [PMID: 31156595 PMCID: PMC6530341 DOI: 10.3389/fmicb.2019.01087] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 04/30/2019] [Indexed: 12/19/2022] Open
Abstract
Achieving food security in a context of environmental sustainability is one of the main challenges of the XXI century. Two competing strategies to achieve this goal are the use of genetically modified plants and the use of plant growth promoting microorganisms (PGPMs). However, few studies assess the response of genetically modified plants to PGPMs. The aim of this study was to compare the response of over-expressing the vacuolar H+-PPase (AVP) and wild-type rice types to the endophytic fungus; Piriformospora indica. Oryza sativa plants (WT and AVP) were inoculated with P. indica and 30 days later, morphological, ecophysiological and bioenergetic parameters, and nutrient content were assessed. AVP and WT plant heights were strongly influenced by inoculation with P. indica, which also promoted increases in fresh and dry matter of shoot in both genotypes. This may be related with the stimulatory effect of P. indica on ecophysiological parameters, especially photosynthetic rate, stomatal conductance, intrinsic water use efficiency and carboxylation efficiency. However, there were differences between the genotypes concerning the physiological mechanisms leading to biomass increment. In WT plants, inoculation with P. indica stimulated all H+ pumps. However, in inoculated AVP plants, H+-PPase was stimulated, but P- and V-ATPases were inhibited. Fungal inoculation enhanced nutrient uptake in both shoots and roots of WT and AVP plants, compared to uninoculated plants; but among inoculated genotypes, the nutrient uptake was lower in AVP than in WT plants. These results clearly demonstrate that the symbiosis between P. indica and AVP plants did not benefit those plants, which may be related to the inefficient colonization of this fungus on the transgenic plants, demonstrating an incompatibility of this symbiosis, which needs to be further studied.
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Affiliation(s)
- Amanda Azevedo Bertolazi
- Laboratory of Environmental Microbiology and Biotechnology, Universidade Vila Velha (UVV), Vila Velha, Brazil
| | - Sávio Bastos de Souza
- Laboratory of Plant Physiology, CCTA, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, Brazil
| | - Katherine Fraga Ruas
- Laboratory of Plant Physiology, CCTA, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, Brazil
| | - Eliemar Campostrini
- Laboratory of Plant Physiology, CCTA, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, Brazil
| | - Carlos Eduardo de Rezende
- Laboratory of Environmental Sciences, CBB, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, Brazil
| | - Cristina Cruz
- Centre for Ecology, Evolution and Environmental Changes (Ce3C), Faculty of Sciences, Universidade de Lisboa, Campo Grande, Portugal
| | - Juliana Melo
- Centre for Ecology, Evolution and Environmental Changes (Ce3C), Faculty of Sciences, Universidade de Lisboa, Campo Grande, Portugal
| | - Carlos Moacir Colodete
- Laboratory of Environmental Microbiology and Biotechnology, Universidade Vila Velha (UVV), Vila Velha, Brazil
| | - Ajit Varma
- Amity Institute of Microbial Technology, Amity University, Noida, India
| | - Alessandro Coutinho Ramos
- Laboratory of Environmental Microbiology and Biotechnology, Universidade Vila Velha (UVV), Vila Velha, Brazil
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20
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Scholz-Starke J, Primo C, Yang J, Kandel R, Gaxiola RA, Hirschi KD. The flip side of the Arabidopsis type I proton-pumping pyrophosphatase (AVP1): Using a transmembrane H + gradient to synthesize pyrophosphate. J Biol Chem 2018; 294:1290-1299. [PMID: 30510138 DOI: 10.1074/jbc.ra118.006315] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/29/2018] [Indexed: 01/19/2023] Open
Abstract
Energy partitioning and plant growth are mediated in part by a type I H+-pumping pyrophosphatase (H+-PPase). A canonical role for this transporter has been demonstrated at the tonoplast where it serves a job-sharing role with V-ATPase in vacuolar acidification. Here, we investigated whether the plant H+-PPase from Arabidopsis also functions in "reverse mode" to synthesize PPi using the transmembrane H+ gradient. Using patch-clamp recordings on Arabidopsis vacuoles, we observed inward currents upon Pi application on the cytosolic side. These currents were strongly reduced in vacuoles from two independent H+-PPase mutant lines (vhp1-1 and fugu5-1) lacking the classical PPi-induced outward currents related to H+ pumping, whereas they were significantly larger in vacuoles with engineered heightened expression of the H+-PPase. Current amplitudes related to reverse-mode H+ transport depended on the membrane potential, cytosolic Pi concentration, and magnitude of the pH gradient across the tonoplast. Of note, experiments on vacuolar membrane-enriched vesicles isolated from yeast expressing the Arabidopsis H+-PPase (AVP1) demonstrated Pi-dependent PPi synthase activity in the presence of a pH gradient. Our work establishes that a plant H+-PPase can operate as a PPi synthase beyond its canonical role in vacuolar acidification and cytosolic PPi scavenging. We propose that the PPi synthase activity of H+-PPase contributes to a cascade of events that energize plant growth.
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Affiliation(s)
- Joachim Scholz-Starke
- Institute of Biophysics, Consiglio Nazionale delle Ricerche, Via De Marini 6, 16149 Genova, Italy.
| | - Cecilia Primo
- Children's Nutrition Research Center, Baylor College of Medicine, Houston, Texas 77030
| | - Jian Yang
- Children's Nutrition Research Center, Baylor College of Medicine, Houston, Texas 77030
| | - Raju Kandel
- School of Life Sciences, Arizona State University, Tempe, Arizona 85287
| | - Roberto A Gaxiola
- School of Life Sciences, Arizona State University, Tempe, Arizona 85287
| | - Kendal D Hirschi
- Children's Nutrition Research Center, Baylor College of Medicine, Houston, Texas 77030.
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21
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Vacuolar Proton Pyrophosphatase Is Required for High Magnesium Tolerance in Arabidopsis. Int J Mol Sci 2018; 19:ijms19113617. [PMID: 30453498 PMCID: PMC6274811 DOI: 10.3390/ijms19113617] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/11/2018] [Accepted: 11/11/2018] [Indexed: 11/17/2022] Open
Abstract
Magnesium (Mg2+) is an essential nutrient in all organisms. However, high levels of Mg2+ in the environment are toxic to plants. In this study, we identified the vacuolar-type H⁺-pyrophosphatase, AVP1, as a critical enzyme for optimal plant growth under high-Mg conditions. The Arabidopsis avp1 mutants displayed severe growth retardation, as compared to the wild-type plants upon excessive Mg2+. Unexpectedly, the avp1 mutant plants retained similar Mg content to wild-type plants under either normal or high Mg conditions, suggesting that AVP1 may not directly contribute to Mg2+ homeostasis in plant cells. Further analyses confirmed that the avp1 mutant plants contained a higher pyrophosphate (PPi) content than wild type, coupled with impaired vacuolar H⁺-pyrophosphatase activity. Interestingly, expression of the Saccharomyces cerevisiae cytosolic inorganic pyrophosphatase1 gene IPP1, which facilitates PPi hydrolysis but not proton translocation into vacuole, rescued the growth defects of avp1 mutants under high-Mg conditions. These results provide evidence that high-Mg sensitivity in avp1 mutants possibly resulted from elevated level of cytosolic PPi. Moreover, genetic analysis indicated that mutation of AVP1 was additive to the defects in mgt6 and cbl2 cbl3 mutants that are previously known to be impaired in Mg2+ homeostasis. Taken together, our results suggest AVP1 is required for cellular PPi homeostasis that in turn contributes to high-Mg tolerance in plant cells.
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22
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Wang YY, Cheng YH, Chen KE, Tsay YF. Nitrate Transport, Signaling, and Use Efficiency. ANNUAL REVIEW OF PLANT BIOLOGY 2018; 69:85-122. [PMID: 29570365 DOI: 10.1146/annurev-arplant-042817-040056] [Citation(s) in RCA: 296] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nitrogen accounts for approximately 60% of the fertilizer consumed each year; thus, it represents one of the major input costs for most nonlegume crops. Nitrate is one of the two major forms of nitrogen that plants acquire from the soil. Mechanistic insights into nitrate transport and signaling have enabled new strategies for enhancing nitrogen utilization efficiency, for lowering input costs for farming, and, more importantly, for alleviating environmental impacts (e.g., eutrophication and production of the greenhouse gas N2O). Over the past decade, significant progress has been made in understanding how nitrate is acquired from the surroundings, how it is efficiently distributed into different plant tissues in response to environmental changes, how nitrate signaling is perceived and transmitted, and how shoot and root nitrogen status is communicated. Several key components of these processes have proven to be novel tools for enhancing nitrate- and nitrogen-use efficiency. In this review, we focus on the roles of NRT1 and NRT2 in nitrate uptake and nitrate allocation among different tissues; we describe the functions of the transceptor NRT1.1, transcription factors, and small signaling peptides in nitrate signaling and tissue communication; and we compile the new strategies for improving nitrogen-use efficiency.
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Affiliation(s)
- Ya-Yun Wang
- Department of Life Science and Institute of Plant Biology, National Taiwan University, Taipei 106, Taiwan
| | - Yu-Hsuan Cheng
- Institute of Molecular Biology, Academia Sinica, Taipei 115, Taiwan;
- Molecular and Cell Biology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan
| | - Kuo-En Chen
- Institute of Molecular Biology, Academia Sinica, Taipei 115, Taiwan;
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan
| | - Yi-Fang Tsay
- Institute of Molecular Biology, Academia Sinica, Taipei 115, Taiwan;
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23
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Lv S, Jiang P, Tai F, Wang D, Feng J, Fan P, Bao H, Li Y. The V-ATPase subunit A is essential for salt tolerance through participating in vacuolar Na + compartmentalization in Salicornia europaea. PLANTA 2017; 246:1177-1187. [PMID: 28825133 DOI: 10.1007/s00425-017-2762-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 08/15/2017] [Indexed: 05/25/2023]
Abstract
The V-ATPase subunit A participates in vacuolar Na + compartmentalization in Salicornia europaea regulating V-ATPase and V-PPase activities. Na+ sequestration into the vacuole is an efficient strategy in response to salinity in many halophytes. However, it is not yet fully understood how this process is achieved. Particularly, the role of vacuolar H+-ATPase (V-ATPase) in this process is controversial. Our previous proteomic investigation in the euhalophyte Salicornia europaea L. found a significant increase of the abundance of V-ATPase subunit A under salinity. Here, the gene encoding this subunit named SeVHA-A was characterized, and its role in salt tolerance was demonstrated by RNAi directed downregulation in suspension-cultured cells of S. europaea. The transcripts of genes encoding vacuolar H+-PPase (V-PPase) and vacuolar Na+/H+ antiporter (SeNHX1) also decreased significantly in the RNAi cells. Knockdown of SeVHA-A resulted in a reduction in both V-ATPase and vacuolar H+-PPase (V-PPase) activities. Accordingly, the SeVHA-A-RNAi cells showed increased vacuolar pH and decreased cell viability under different NaCl concentrations. Further Na+ staining showed the reduced vacuolar Na+ sequestration in RNAi cells. Taken together, our results evidenced that SeVHA-A participates in vacuolar Na+ sequestration regulating V-ATPase and V-PPase activities and thereby vacuolar pH in S. europaea. The possible mechanisms underlying the reduction of vacuolar V-PPase activity in SeVHA-A-RNAi cells were also discussed.
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Affiliation(s)
- Sulian Lv
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Ping Jiang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Fang Tai
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Duoliya Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Juanjuan Feng
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Pengxiang Fan
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Hexigeduleng Bao
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Yinxin Li
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
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24
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Pittarello M, Busato JG, Carletti P, Dobbss LB. Possible developments for ex situ phytoremediation of contaminated sediments, in tropical and subtropical regions - Review. CHEMOSPHERE 2017; 182:707-719. [PMID: 28531837 DOI: 10.1016/j.chemosphere.2017.04.093] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 03/23/2017] [Accepted: 04/20/2017] [Indexed: 06/07/2023]
Abstract
The growing problem of remediation of contaminated sediments dredged from harbor channels needs to be resolved by a cost effective and sustainable technology. Phytoremediation, by ex situ remediation plants, seems to have the potential to replace traditional methods in case of moderately contaminated sediments. On the other side, the need to mix sediments with soil and/or sand to allow an easier establishment of most employed species causes an increase of the volume of the processed substrate up to 30%. Moreover the majority of phytoremediating species are natives of temperate climate belt. Mangroves, with a special focus on the genus Avicennia - a salt secreting species - should represent an effective alternative in terms of adaptation to salty, anoxic sediments and an opportunity to develop ex situ phytoremediation plants in tropical and subtropical regions. The use of humic acid to increase root development, cell antioxidant activity and the potential attenuation of the "heavy metals exclusion strategy" to increase phytoextraction potentials of mangroves will be reviewed.
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Affiliation(s)
- Marco Pittarello
- University of Vila Velha, Ecology of Organic Matter Laboratory, Biopraticas Compound, Vila Velha, ES, Brazil.
| | - Jader Galba Busato
- University of Brasilia, Faculty of Agronomy and Veterinary Medicine, University Campus Darcy Ribeiro, Sciences Central Institute, Federal District, Brazil
| | - Paolo Carletti
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, Padova, Italy
| | - Leonardo Barros Dobbss
- Federal University of Vales do Jequitinhonha e Mucuri, Institute of Agricultural Sciences, Unaí, MG, Brazil
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25
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Heuer S, Gaxiola R, Schilling R, Herrera-Estrella L, López-Arredondo D, Wissuwa M, Delhaize E, Rouached H. Improving phosphorus use efficiency: a complex trait with emerging opportunities. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 90:868-885. [PMID: 27859875 DOI: 10.1111/tpj.13423] [Citation(s) in RCA: 132] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 11/02/2016] [Accepted: 11/07/2016] [Indexed: 05/18/2023]
Abstract
Phosphorus (P) is one of the essential nutrients for plants, and is indispensable for plant growth and development. P deficiency severely limits crop yield, and regular fertilizer applications are required to obtain high yields and to prevent soil degradation. To access P from the soil, plants have evolved high- and low-affinity Pi transporters and the ability to induce root architectural changes to forage P. Also, adjustments of numerous cellular processes are triggered by the P starvation response, a tightly regulated process in plants. With the increasing demand for food as a result of a growing population, the demand for P fertilizer is steadily increasing. Given the high costs of fertilizers and in light of the fact that phosphate rock, the source of P fertilizer, is a finite natural resource, there is a need to enhance P fertilizer use efficiency in agricultural systems and to develop plants with enhanced Pi uptake and internal P-use efficiency (PUE). In this review we will provide an overview of continuing relevant research and highlight different approaches towards developing crops with enhanced PUE. In this context, we will summarize our current understanding of root responses to low phosphorus conditions and will emphasize the importance of combining PUE with tolerance of other stresses, such as aluminum toxicity. Of the many genes associated with Pi deficiency, this review will focus on those that hold promise or are already at an advanced stage of testing (OsPSTOL1, AVP1, PHO1 and OsPHT1;6). Finally, an update is provided on the progress made exploring alternative technologies, such as phosphite fertilizer.
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Affiliation(s)
- Sigrid Heuer
- University of Adelaide / Australian Centre for Plant Functional Genomics (ACPFG), PMB 1, Glen Osmond, 5064, Australia
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26
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Fan W, Wang H, Wu Y, Yang N, Yang J, Zhang P. H + -pyrophosphatase IbVP1 promotes efficient iron use in sweet potato [Ipomoea batatas (L.) Lam.]. PLANT BIOTECHNOLOGY JOURNAL 2017; 15:698-712. [PMID: 27864852 PMCID: PMC5425394 DOI: 10.1111/pbi.12667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 10/23/2016] [Accepted: 11/16/2016] [Indexed: 05/08/2023]
Abstract
Iron (Fe) deficiency is one of the most common micronutrient deficiencies limiting crop production globally, especially in arid regions because of decreased availability of iron in alkaline soils. Sweet potato [Ipomoea batatas (L.) Lam.] grows well in arid regions and is tolerant to Fe deficiency. Here, we report that the transcription of type I H+ -pyrophosphatase (H+ -PPase) gene IbVP1 in sweet potato plants was strongly induced by Fe deficiency and auxin in hydroponics, improving Fe acquisition via increased rhizosphere acidification and auxin regulation. When overexpressed, transgenic plants show higher pyrophosphate hydrolysis and plasma membrane H+ -ATPase activity compared with the wild type, leading to increased rhizosphere acidification. The IbVP1-overexpressing plants showed better growth, including enlarged root systems, under Fe-sufficient or Fe-deficient conditions. Increased ferric precipitation and ferric chelate reductase activity in the roots of transgenic lines indicate improved iron uptake, which is also confirmed by increased Fe content and up-regulation of Fe uptake genes, e.g. FRO2, IRT1 and FIT. Carbohydrate metabolism is significantly affected in the transgenic lines, showing increased sugar and starch content associated with the increased expression of AGPase and SUT1 genes and the decrease in β-amylase gene expression. Improved antioxidant capacities were also detected in the transgenic plants, which showed reduced H2 O2 accumulation associated with up-regulated ROS-scavenging activity. Therefore, H+ -PPase plays a key role in the response to Fe deficiency by sweet potato and effectively improves the Fe acquisition by overexpressing IbVP1 in crops cultivated in micronutrient-deficient soils.
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Affiliation(s)
- Weijuan Fan
- National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
| | - Hongxia Wang
- National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
| | - Yinliang Wu
- National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
| | - Nan Yang
- National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
| | - Jun Yang
- Shanghai Key Laboratory of Plant Functional Genomics and ResourcesShanghai Chenshan Plant Science Research CenterChinese Academy of SciencesShanghai Chenshan Botanical GardenShanghaiChina
| | - Peng Zhang
- National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
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27
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Schilling RK, Tester M, Marschner P, Plett DC, Roy SJ. AVP1: One Protein, Many Roles. TRENDS IN PLANT SCIENCE 2017; 22:154-162. [PMID: 27989652 DOI: 10.1016/j.tplants.2016.11.012] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 11/07/2016] [Accepted: 11/08/2016] [Indexed: 05/23/2023]
Abstract
Constitutive expression of the Arabidopsis vacuolar proton-pumping pyrophosphatase (H+-PPase) gene (AVP1) increases plant growth under various abiotic stress conditions and, importantly, under nonstressed conditions. Many interpretations have been proposed to explain these phenotypes, including greater vacuolar ion sequestration, increased auxin transport, enhanced heterotrophic growth, and increased transport of sucrose from source to sink tissues. In this review, we evaluate all the roles proposed for AVP1, using findings published to date from mutant plants lacking functional AVP1 and transgenic plants expressing AVP1. It is clear that AVP1 is one protein with many roles, and that one or more of these roles act to enhance plant growth. The complexity suggests that a systems biology approach to evaluate biological networks is required to investigate these intertwined roles.
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Affiliation(s)
- Rhiannon K Schilling
- School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA 5005, Australia.
| | - Mark Tester
- Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Petra Marschner
- School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Darren C Plett
- School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA 5005, Australia; Australian Centre for Plant Functional Genomics, Adelaide, SA 5005, Australia
| | - Stuart J Roy
- School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA 5005, Australia; Australian Centre for Plant Functional Genomics, Adelaide, SA 5005, Australia
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28
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Pizzio GA, Hirschi KD, Gaxiola RA. Conjecture Regarding Posttranslational Modifications to the Arabidopsis Type I Proton-Pumping Pyrophosphatase (AVP1). FRONTIERS IN PLANT SCIENCE 2017; 8:1572. [PMID: 28955362 PMCID: PMC5601048 DOI: 10.3389/fpls.2017.01572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 08/28/2017] [Indexed: 05/06/2023]
Abstract
Agbiotechnology uses genetic engineering to improve the output and value of crops. Altering the expression of the plant Type I Proton-pumping Pyrophosphatase (H+-PPase) has already proven to be a useful tool to enhance crop productivity. Despite the effective use of this gene in translational research, information regarding the intracellular localization and functional plasticity of the pump remain largely enigmatic. Using computer modeling several putative phosphorylation, ubiquitination and sumoylation target sites were identified that may regulate Arabidopsis H+-PPase (AVP1- Arabidopsis Vacuolar Proton-pump 1) subcellular trafficking and activity. These putative regulatory sites will direct future research that specifically addresses the partitioning and transport characteristics of this pump. We posit that fine-tuning H+-PPases activity and cellular distribution will facilitate rationale strategies for further genetic improvements in crop productivity.
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Affiliation(s)
- Gaston A. Pizzio
- Center for Research in Agricultural Genomics, Consejo Superior de Investigaciones CientíficasBarcelona, Spain
- *Correspondence: Gaston A. Pizzio, ; Roberto A. Gaxiola,
| | - Kendal D. Hirschi
- USDA ARS Children’s Nutrition Research Center, Baylor College of Medicine, HoustonTX, United States
| | - Roberto A. Gaxiola
- School of Life Sciences, Arizona State University, TempeAZ, United States
- *Correspondence: Gaston A. Pizzio, ; Roberto A. Gaxiola,
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29
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Kang P, Bao AK, Kumar T, Pan YQ, Bao Z, Wang F, Wang SM. Assessment of Stress Tolerance, Productivity, and Forage Quality in T 1 Transgenic Alfalfa Co-overexpressing ZxNHX and ZxVP1-1 from Zygophyllum xanthoxylum. FRONTIERS IN PLANT SCIENCE 2016; 7:1598. [PMID: 27833624 PMCID: PMC5081344 DOI: 10.3389/fpls.2016.01598] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 10/10/2016] [Indexed: 05/21/2023]
Abstract
Salinization, desertification, and soil nutrient deprivation are threatening the production of alfalfa (Medicago sativa L.) in northern China. We have previously generated T0 transgenic alfalfa co-overexpressing Zygophyllum xanthoxylum ZxNHX and ZxVP1-1 genes with enhanced salt and drought tolerance. To further develop this excellent breeding material into the new forage cultivar, stress tolerance, productivity, and forage quality of T1 transgenic alfalfa (GM) were assessed in this study. The GM inherited the traits of salt and drought tolerance from T0 generation. Most importantly, co-overexpression of ZxNHX and ZxVP1-1 enhanced the tolerance to Pi deficiency in GM, which was associated with more Pi accumulation in plants. Meanwhile, T1 transgenic alfalfa developed a larger root system with increased root size, root dry weight and root/shoot ratio, which may be one important reason for the improvement of phosphorus nutrition and high biomass accumulation in GM under various conditions. GM also accumulated more crude protein, crude fiber, crude fat, and crude ash than wild-type (WT) plants, especially under stress conditions and in the field. More interestingly, the crude fat contents sharply dropped in WT (by 66-74%), whereas showed no change or decreased less in GM, when subjected to salinity, drought or low-Pi. Our results indicate that T1 transgenic alfalfa co-overexpressing ZxNHX and ZxVP1-1 shows stronger stress tolerance, higher productivity and better forage quality. This study provides a solid foundation for creating the alfalfa cultivars with high yield, good quality and wide adaptability on saline, dry, and nutrient-deprived marginal lands of northern China.
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Affiliation(s)
| | - Ai-Ke Bao
- *Correspondence: Ai-Ke Bao, Suo-Min Wang,
| | | | | | | | | | - Suo-Min Wang
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou UniversityLanzhou, China
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30
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Beatty PH, Klein MS, Fischer JJ, Lewis IA, Muench DG, Good AG. Understanding Plant Nitrogen Metabolism through Metabolomics and Computational Approaches. PLANTS 2016; 5:plants5040039. [PMID: 27735856 PMCID: PMC5198099 DOI: 10.3390/plants5040039] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 09/21/2016] [Accepted: 09/30/2016] [Indexed: 01/24/2023]
Abstract
A comprehensive understanding of plant metabolism could provide a direct mechanism for improving nitrogen use efficiency (NUE) in crops. One of the major barriers to achieving this outcome is our poor understanding of the complex metabolic networks, physiological factors, and signaling mechanisms that affect NUE in agricultural settings. However, an exciting collection of computational and experimental approaches has begun to elucidate whole-plant nitrogen usage and provides an avenue for connecting nitrogen-related phenotypes to genes. Herein, we describe how metabolomics, computational models of metabolism, and flux balance analysis have been harnessed to advance our understanding of plant nitrogen metabolism. We introduce a model describing the complex flow of nitrogen through crops in a real-world agricultural setting and describe how experimental metabolomics data, such as isotope labeling rates and analyses of nutrient uptake, can be used to refine these models. In summary, the metabolomics/computational approach offers an exciting mechanism for understanding NUE that may ultimately lead to more effective crop management and engineered plants with higher yields.
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Affiliation(s)
- Perrin H Beatty
- Department of Biological Sciences, University of Alberta, 85 Avenue NW, Edmonton, AB T6G 2E9, Canada.
| | - Matthias S Klein
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada.
| | - Jeffrey J Fischer
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada.
| | - Ian A Lewis
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada.
| | - Douglas G Muench
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada.
| | - Allen G Good
- Department of Biological Sciences, University of Alberta, 85 Avenue NW, Edmonton, AB T6G 2E9, Canada.
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31
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Bao AK, Du BQ, Touil L, Kang P, Wang QL, Wang SM. Co-expression of tonoplast Cation/H(+) antiporter and H(+)-pyrophosphatase from xerophyte Zygophyllum xanthoxylum improves alfalfa plant growth under salinity, drought and field conditions. PLANT BIOTECHNOLOGY JOURNAL 2016; 14:964-75. [PMID: 26268400 DOI: 10.1111/pbi.12451] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 07/10/2015] [Indexed: 05/20/2023]
Abstract
Salinity and drought are major environmental factors limiting the growth and productivity of alfalfa worldwide as this economically important legume forage is sensitive to these kinds of abiotic stress. In this study, transgenic alfalfa lines expressing both tonoplast NXH and H(+)-PPase genes, ZxNHX and ZxVP1-1 from the xerophyte Zygophyllum xanthoxylum L., were produced via Agrobacterium tumefaciens-mediated transformation. Compared with wild-type (WT) plants, transgenic alfalfa plants co-expressing ZxNHX and ZxVP1-1 grew better with greater plant height and dry mass under normal or stress conditions (NaCl or water-deficit) in the greenhouse. The growth performance of transgenic alfalfa plants was associated with more Na(+), K(+) and Ca(2+) accumulation in leaves and roots, as a result of co-expression of ZxNHX and ZxVP1-1. Cation accumulation contributed to maintaining intracellular ions homoeostasis and osmoregulation of plants and thus conferred higher leaf relative water content and greater photosynthesis capacity in transgenic plants compared to WT when subjected to NaCl or water-deficit stress. Furthermore, the transgenic alfalfa co-expressing ZxNHX and ZxVP1-1 also grew faster than WT plants under field conditions, and most importantly, exhibited enhanced photosynthesis capacity by maintaining higher net photosynthetic rate, stomatal conductance, and water-use efficiency than WT plants. Our results indicate that co-expression of tonoplast NHX and H(+)-PPase genes from a xerophyte significantly improved the growth of alfalfa, and enhanced its tolerance to high salinity and drought. This study laid a solid basis for reclaiming and restoring saline and arid marginal lands as well as improving forage yield in northern China.
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Affiliation(s)
- Ai-Ke Bao
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Bao-Qiang Du
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
- Lanzhou Animal Husbandry and Veterinary Institute, Lanzhou, China
| | - Leila Touil
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
- Laboratory of arid and oasis cropping, Institute of Arid Area (IRA), Medenine, Tunisia
| | - Peng Kang
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Qiang-Long Wang
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Suo-Min Wang
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
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Gaxiola RA, Regmi K, Hirschi KD. Moving On Up: H(+)-PPase Mediated Crop Improvement. Trends Biotechnol 2016; 34:347-349. [PMID: 26818803 DOI: 10.1016/j.tibtech.2015.12.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 12/30/2015] [Accepted: 12/31/2015] [Indexed: 10/22/2022]
Abstract
Upregulation of H(+)-PPase in diverse crop systems triggers agriculturally beneficial phenotypes including augmented stress tolerance, improved water and nutrient use efficiencies, and increased biomass and yield. We argue that further research is warranted to maximize the full potential of this simple and successful biotechnology.
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Affiliation(s)
- Roberto A Gaxiola
- School of Life Sciences, Arizona State University, Tempe, AZ 852872, USA.
| | - Kamesh Regmi
- School of Life Sciences, Arizona State University, Tempe, AZ 852872, USA
| | - Kendal D Hirschi
- USDA/ARS Children's Nutrition Research Center, Baylor College of Medicine, 1100 Bates Street, Houston, TX 77030, USA
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Yang Y, Liu Y, Yuan H, Liu X, Gao Y, Gong M, Zou Z. Membrane-bound pyrophosphatase of human gut microbe Clostridium methylpentosum confers improved salt tolerance in Escherichia coli, Saccharomyces cerevisiae and tobacco. Mol Membr Biol 2016; 33:39-50. [PMID: 29025361 DOI: 10.1080/09687688.2017.1370145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Membrane-bound pyrophosphatases (PPases) are involved in the adaption of organisms to stress conditions, which was substantiated by numerous plant transgenic studies with H+-PPase yet devoid of any correlated evidences for other two subfamilies, Na+-PPase and Na+,H+-PPase. Herein, we demonstrate the gene cloning and functional evaluation of the membrane-bound PPase (CmPP) of the human gut microbe Clostridium methylpentosum. The CmPP gene encodes a single polypeptide of 699 amino acids that was predicted as a multi-spanning membrane and K+-dependent Na+,H+-PPase. Heterologous expression of CmPP could significantly enhance the salt tolerance of both Escherichia coli and Saccharomyces cerevisiae, and this effect in yeast could be fortified by N-terminal addition of a vacuole-targeting signal peptide from the H+-PPase of Trypanosoma cruzi. Furthermore, introduction of CmPP could remarkably improve the salt tolerance of tobacco, implying its potential use in constructing salt-resistant transgenic crops. Consequently, the possible mechanisms of CmPP to underlie salt tolerance are discussed.
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Affiliation(s)
- Yumei Yang
- a School of Life Sciences, Engineering Research Center of Sustainable Development and Utilization of Biomass Energy , Ministry of Education, Key Laboratory of Biomass Energy and Environmental Biotechnology of Yunnan Province, Yunnan Normal University , Kunming , Yunnan , China
| | - Yanjuan Liu
- a School of Life Sciences, Engineering Research Center of Sustainable Development and Utilization of Biomass Energy , Ministry of Education, Key Laboratory of Biomass Energy and Environmental Biotechnology of Yunnan Province, Yunnan Normal University , Kunming , Yunnan , China
| | - Hang Yuan
- a School of Life Sciences, Engineering Research Center of Sustainable Development and Utilization of Biomass Energy , Ministry of Education, Key Laboratory of Biomass Energy and Environmental Biotechnology of Yunnan Province, Yunnan Normal University , Kunming , Yunnan , China
| | - Xian Liu
- a School of Life Sciences, Engineering Research Center of Sustainable Development and Utilization of Biomass Energy , Ministry of Education, Key Laboratory of Biomass Energy and Environmental Biotechnology of Yunnan Province, Yunnan Normal University , Kunming , Yunnan , China
| | - Yanxiu Gao
- a School of Life Sciences, Engineering Research Center of Sustainable Development and Utilization of Biomass Energy , Ministry of Education, Key Laboratory of Biomass Energy and Environmental Biotechnology of Yunnan Province, Yunnan Normal University , Kunming , Yunnan , China
| | - Ming Gong
- a School of Life Sciences, Engineering Research Center of Sustainable Development and Utilization of Biomass Energy , Ministry of Education, Key Laboratory of Biomass Energy and Environmental Biotechnology of Yunnan Province, Yunnan Normal University , Kunming , Yunnan , China
| | - Zhurong Zou
- a School of Life Sciences, Engineering Research Center of Sustainable Development and Utilization of Biomass Energy , Ministry of Education, Key Laboratory of Biomass Energy and Environmental Biotechnology of Yunnan Province, Yunnan Normal University , Kunming , Yunnan , China
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Khadilkar AS, Yadav UP, Salazar C, Shulaev V, Paez-Valencia J, Pizzio GA, Gaxiola RA, Ayre BG. Constitutive and Companion Cell-Specific Overexpression of AVP1, Encoding a Proton-Pumping Pyrophosphatase, Enhances Biomass Accumulation, Phloem Loading, and Long-Distance Transport. PLANT PHYSIOLOGY 2016; 170:401-14. [PMID: 26530315 PMCID: PMC4704589 DOI: 10.1104/pp.15.01409] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 10/30/2015] [Indexed: 05/18/2023]
Abstract
Plant productivity is determined in large part by the partitioning of assimilates between the sites of production and the sites of utilization. Proton-pumping pyrophosphatases (H(+)-PPases) are shown to participate in many energetic plant processes, including general growth and biomass accumulation, CO2 fixation, nutrient acquisition, and stress responses. H(+)-PPases have a well-documented role in hydrolyzing pyrophosphate (PPi) and capturing the released energy to pump H(+) across the tonoplast and endomembranes to create proton motive force (pmf). Recently, an additional role for H(+)-PPases in phloem loading and biomass partitioning was proposed. In companion cells (CCs) of the phloem, H(+)-PPases localize to the plasma membrane rather than endomembranes, and rather than hydrolyzing PPi to create pmf, pmf is utilized to synthesize PPi. Additional PPi in the CCs promotes sucrose oxidation and ATP synthesis, which the plasma membrane P-type ATPase in turn uses to create more pmf for phloem loading of sucrose via sucrose-H(+) symporters. To test this model, transgenic Arabidopsis (Arabidopsis thaliana) plants were generated with constitutive and CC-specific overexpression of AVP1, encoding type 1 ARABIDOPSIS VACUOLAR PYROPHOSPHATASE1. Plants with both constitutive and CC-specific overexpression accumulated more biomass in shoot and root systems. (14)C-labeling experiments showed enhanced photosynthesis, phloem loading, phloem transport, and delivery to sink organs. The results obtained with constitutive and CC-specific promoters were very similar, such that the growth enhancement mediated by AVP1 overexpression can be attributed to its role in phloem CCs. This supports the model for H(+)-PPases functioning as PPi synthases in the phloem by arguing that the increases in biomass observed with AVP1 overexpression stem from improved phloem loading and transport.
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Affiliation(s)
- Aswad S Khadilkar
- Department of Biological Sciences, University of North Texas, Denton, Texas 76203 (A.S.K., U.P.Y., C.S., V.S., B.G.A.); andSchool of Life Sciences, Arizona State University, Tempe, Arizona 85287 (J.P.-V., G.A.P., R.A.G.)
| | - Umesh P Yadav
- Department of Biological Sciences, University of North Texas, Denton, Texas 76203 (A.S.K., U.P.Y., C.S., V.S., B.G.A.); andSchool of Life Sciences, Arizona State University, Tempe, Arizona 85287 (J.P.-V., G.A.P., R.A.G.)
| | - Carolina Salazar
- Department of Biological Sciences, University of North Texas, Denton, Texas 76203 (A.S.K., U.P.Y., C.S., V.S., B.G.A.); andSchool of Life Sciences, Arizona State University, Tempe, Arizona 85287 (J.P.-V., G.A.P., R.A.G.)
| | - Vladimir Shulaev
- Department of Biological Sciences, University of North Texas, Denton, Texas 76203 (A.S.K., U.P.Y., C.S., V.S., B.G.A.); andSchool of Life Sciences, Arizona State University, Tempe, Arizona 85287 (J.P.-V., G.A.P., R.A.G.)
| | - Julio Paez-Valencia
- Department of Biological Sciences, University of North Texas, Denton, Texas 76203 (A.S.K., U.P.Y., C.S., V.S., B.G.A.); andSchool of Life Sciences, Arizona State University, Tempe, Arizona 85287 (J.P.-V., G.A.P., R.A.G.)
| | - Gaston A Pizzio
- Department of Biological Sciences, University of North Texas, Denton, Texas 76203 (A.S.K., U.P.Y., C.S., V.S., B.G.A.); andSchool of Life Sciences, Arizona State University, Tempe, Arizona 85287 (J.P.-V., G.A.P., R.A.G.)
| | - Roberto A Gaxiola
- Department of Biological Sciences, University of North Texas, Denton, Texas 76203 (A.S.K., U.P.Y., C.S., V.S., B.G.A.); andSchool of Life Sciences, Arizona State University, Tempe, Arizona 85287 (J.P.-V., G.A.P., R.A.G.)
| | - Brian G Ayre
- Department of Biological Sciences, University of North Texas, Denton, Texas 76203 (A.S.K., U.P.Y., C.S., V.S., B.G.A.); andSchool of Life Sciences, Arizona State University, Tempe, Arizona 85287 (J.P.-V., G.A.P., R.A.G.)
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Lv S, Jiang P, Wang D, Li Y. H(+)-pyrophosphatase from Salicornia europaea enhances tolerance to low phosphate under salinity in Arabidopsis. PLANT SIGNALING & BEHAVIOR 2016; 11:e1128615. [PMID: 26669625 PMCID: PMC4871661 DOI: 10.1080/15592324.2015.1128615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 12/01/2015] [Accepted: 12/02/2015] [Indexed: 06/05/2023]
Abstract
Increasing soil salinity threatens crop productivity worldwide. High soil salinity is usually accompanied by the low availability of many mineral nutrients. Here, we investigated the potential role that the H(+)- PPase could play in optimizing P use efficiency under salinity in plants. Transgenic Arabidopsis plants overexpressing either SeVP1 or SeVP2 from Salicornia europaea outperformed the wild-types under low phosphate (Pi) as well as low Pi plus salt conditions. Our results suggested that H(+)-PPase could increase external Pi acquisition through promoting root development and upregulating phosphate transporters, thus to protect plants from Pi limiting stress. This study provides a potential strategy for improving crop yields challenged by the co-occurrence of abiotic stresses.
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Affiliation(s)
- Sulian Lv
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Ping Jiang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Duoliya Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Yinxin Li
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
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36
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Chen S, Luo Y, Ding G, Xu F. Comparative analysis of Brassica napus plasma membrane proteins under phosphorus deficiency using label-free and MaxQuant-based proteomics approaches. J Proteomics 2015; 133:144-152. [PMID: 26746009 DOI: 10.1016/j.jprot.2015.12.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 12/14/2015] [Accepted: 12/18/2015] [Indexed: 12/27/2022]
Abstract
UNLABELLED Phosphorus (P) deficiency is a primary constraint for plant growth in terrestrial ecosystems. To better understand the genotypic differences in the adaptation mechanism of Brassica napus to P deficiency, we purified the plasma membrane (PM) from the roots of two genotypes: P-efficient "Eyou Changjia" and P-inefficient "B104-2". Combining label-free quantitative proteomics with the MaxQuant approach, a total of 71 proteins that significantly changed in abundances were identified in the two genotypes in response to P-free starvation, including 31 in "Eyou Changjia" and 40 in "B104-2". Based on comparative genomics study, 28 proteins were mapped to the confidence intervals of quantitative trait loci (QTLs) for P efficiency related traits. Seven decreased proteins with transporter activity were found to be located in the PM by subcellular localization analyses. These proteins involved in intracellular protein transport and ATP hydrolysis coupled proton transport were mapped to the QTL for P content and dry weight. Compared with "B104-2", more decreased proteins referring to transporter activity were found in "Eyou Changjia", showing that substance exchange was decreased in response to short-term P-free starvation. Together with the finding, more decreased proteins functioning in signal transduction and protein synthesis/degradation suggested that "Eyou Changjia" could slow the progression of growth and save more P in response to short-term P-free starvation. BIOLOGICAL SIGNIFICANCE P deficiency seriously limits the production and quality of B. napus. Roots absorb water and nutrients and anchor the plant in the soil. Therefore, to study root PM proteome under P stress would be helpful to understand the adaptation mechanism for P deficiency. However, PM proteome analysis in B. napus has been seldom reported due to the high hydrophobicity and low abundance of PM. Thus, we herein investigated the PM proteome alteration of roots in two B. napus genotypes, with different P deficient tolerances, in response to P-free starvation. The present study offers new insights and novel information for better understanding the adaptative response to P deficiency in B. napus.
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Affiliation(s)
- Shuisen Chen
- National Key Laboratory of Crop Genetic Improvement, and Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Biological Science and Technology, Shenyang Agricultural University, Shenyang 110866, China
| | - Ying Luo
- National Key Laboratory of Crop Genetic Improvement, and Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China
| | - Guangda Ding
- National Key Laboratory of Crop Genetic Improvement, and Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China
| | - Fangsen Xu
- National Key Laboratory of Crop Genetic Improvement, and Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
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Molecular Cloning, Expression Analysis, and Functional Characterization of the H(+)-Pyrophosphatase from Jatropha curcas. Appl Biochem Biotechnol 2015; 178:1273-85. [PMID: 26643082 DOI: 10.1007/s12010-015-1944-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 11/30/2015] [Indexed: 10/22/2022]
Abstract
H(+)-pyrophosphatase (H(+)-PPase) is a primary pyrophosphate (PPi)-energized proton pump to generate electrochemical H(+) gradient for ATP production and substance translocations across membranes. It plays an important role in stress adaptation that was intensively substantiated by numerous transgenic plants overexpressing H(+)-PPases yet devoid of any correlated studies pointing to the elite energy plant, Jatropha curcas. Herein, we cloned the full length of J. curcas H(+)-PPase (JcVP1) complementary DNA (cDNA) by reverse transcription PCR, based on the assembled sequence of its ESTs highly matched to Hevea brasiliensis H(+)-PPase. This gene encodes a polypeptide of 765 amino acids that was predicted as a K(+)-dependent H(+)-PPase evolutionarily closest to those of other Euphorbiaceae plants. Many cis-regulatory elements relevant to environmental stresses, molecular signals, or tissue-specificity were identified by promoter prediction within the 1.5-kb region upstream of JcVP1 coding sequence. Meanwhile, the responses of JcVP1 expression to several common abiotic stresses (salt, drought, heat, cold) were characterized with a considerable accordance with the inherent stress tolerance of J. curcas. Moreover, we found that the heterologous expression of JcVP1 could significantly improve the salt tolerance in both recombinant Escherichia coli and Saccharomyces cerevisiae, and this effect could be further fortified in yeast by N-terminal addition of a vacuole-targeting signal peptide from the H(+)-PPase of Trypanosoma cruzi.
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Lv S, Jiang P, Nie L, Chen X, Tai F, Wang D, Fan P, Feng J, Bao H, Wang J, Li Y. H(+) -pyrophosphatase from Salicornia europaea confers tolerance to simultaneously occurring salt stress and nitrogen deficiency in Arabidopsis and wheat. PLANT, CELL & ENVIRONMENT 2015; 38:2433-49. [PMID: 25920512 DOI: 10.1111/pce.12557] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 04/20/2015] [Indexed: 05/14/2023]
Abstract
High salinity and nitrogen (N) deficiency in soil are two key factors limiting crop productivity, and they usually occur simultaneously. Here we firstly found that H(+) -PPase is involved in salt-stimulated NO3 (-) uptake in the euhalophyte Salicornia europaea. Then, two genes (named SeVP1 and SeVP2) encoding H(+) -PPase from S. europaea were characterized. The expression of SeVP1 and SeVP2 was induced by salt stress and N starvation. Both SeVP1 or SeVP2 transgenic Arabidopsis and wheat plants outperformed the wild types (WTs) when high salt and low N occur simultaneously. The transgenic Arabidopsis plants maintained higher K(+) /Na(+) ratio in leaves and exhibited increased NO3 (-) uptake, inorganic pyrophosphate-dependent vacuolar nitrate efflux and assimilation capacity under this double stresses. Furthermore, they had more soluble sugars in shoots and roots and less starch accumulation in shoots than WT. These performances can be explained by the up-regulated expression of ion, nitrate and sugar transporter genes in transgenic plants. Taken together, our results suggest that up-regulation of H(+) -PPase favours the transport of photosynthates to root, which could promote root growth and integrate N and carbon metabolism in plant. This work provides potential strategies for improving crop yields challenged by increasing soil salinization and shrinking farmland.
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Affiliation(s)
- Sulian Lv
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Ping Jiang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Lingling Nie
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Xianyang Chen
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Fang Tai
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Duoliya Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Pengxiang Fan
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Juanjuan Feng
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Hexigeduleng Bao
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Jinhui Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Yinxin Li
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
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Yang Y, Tang RJ, Li B, Wang HH, Jin YL, Jiang CM, Bao Y, Su HY, Zhao N, Ma XJ, Yang L, Chen SL, Cheng XH, Zhang HX. Overexpression of a Populus trichocarpa H+-pyrophosphatase gene PtVP1.1 confers salt tolerance on transgenic poplar. TREE PHYSIOLOGY 2015; 35:663-77. [PMID: 25877769 DOI: 10.1093/treephys/tpv027] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 03/08/2015] [Indexed: 05/20/2023]
Abstract
The Arabidopsis vacuolar H(+)-pyrophosphatase (AVP1) has been well studied and subsequently employed to improve salt and/or drought resistance in herbaceous plants. However, the exact function of H(+)-pyrophosphatase in woody plants still remains unknown. In this work, we cloned a homolog of type I H(+)-pyrophosphatase gene, designated as PtVP1.1, from Populus trichocarpa, and investigated its function in both Arabidopsis and poplar. The deduced translation product PtVP1.1 shares 89.74% identity with AVP1. Semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) and quantitative real-time PCR analyses revealed a ubiquitous expression pattern of PtVP1.1 in various tissues, including roots, stems, leaves and shoot tips. Heterologous expression of PtVP1.1 rescued the retarded-root-growth phenotype of avp1, an Arabidopsis knock out mutant of AVP1, on low carbohydrate medium. Overexpression of PtVP1.1 in poplar (P. davidiana × P. bolleana) led to more vigorous growth of transgenic plants in the presence of 150 mM NaCl. Microsomal membrane vesicles derived from PtVP1.1 transgenic plants exhibited higher H(+)-pyrophosphatase hydrolytic activity than those from wild type (WT). Further studies indicated that the improved salt tolerance was associated with a decreased Na(+) and increased K(+) accumulation in the leaves of transgenic plants. Na(+) efflux and H(+) influx in the roots of transgenic plants were also significantly higher than those in the WT plants. All these results suggest that PtVP1.1 is a functional counterpart of AVP1 and can be genetically engineered for salt tolerance improvement in trees.
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Affiliation(s)
- Y Yang
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, China 264025 National Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai, China 200032
| | - R J Tang
- National Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai, China 200032 Present address: Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
| | - B Li
- National Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai, China 200032
| | - H H Wang
- National Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai, China 200032
| | - Y L Jin
- National Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai, China 200032
| | - C M Jiang
- National Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai, China 200032
| | - Y Bao
- National Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai, China 200032
| | - H Y Su
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, China 264025
| | - N Zhao
- College of Biological Sciences and Technology, Beijing Forestry University, 35 Qinghua-East Road, Beijing, China 100083
| | - X J Ma
- College of Biological Sciences and Technology, Beijing Forestry University, 35 Qinghua-East Road, Beijing, China 100083
| | - L Yang
- College of Life Sciences, Nanjing University, 22 Hankou Road, Nanjing, China 210093
| | - S L Chen
- College of Biological Sciences and Technology, Beijing Forestry University, 35 Qinghua-East Road, Beijing, China 100083
| | - X H Cheng
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, China 264025
| | - H X Zhang
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, China 264025 National Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai, China 200032
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Veluchamy A, Rastogi A, Lin X, Lombard B, Murik O, Thomas Y, Dingli F, Rivarola M, Ott S, Liu X, Sun Y, Rabinowicz PD, McCarthy J, Allen AE, Loew D, Bowler C, Tirichine L. An integrative analysis of post-translational histone modifications in the marine diatom Phaeodactylum tricornutum. Genome Biol 2015; 16:102. [PMID: 25990474 PMCID: PMC4504042 DOI: 10.1186/s13059-015-0671-8] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 05/11/2015] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Nucleosomes are the building blocks of chromatin where gene regulation takes place. Chromatin landscapes have been profiled for several species, providing insights into the fundamental mechanisms of chromatin-mediated transcriptional regulation of gene expression. However, knowledge is missing for several major and deep-branching eukaryotic groups, such as the Stramenopiles, which include the diatoms. Diatoms are highly diverse and ubiquitous species of phytoplankton that play a key role in global biogeochemical cycles. Dissecting chromatin-mediated regulation of genes in diatoms will help understand the ecological success of these organisms in contemporary oceans. RESULTS Here, we use high resolution mass spectrometry to identify a full repertoire of post-translational modifications on histones of the marine diatom Phaeodactylum tricornutum, including eight novel modifications. We map five histone marks coupled with expression data and show that P. tricornutum displays both unique and broadly conserved chromatin features, reflecting the chimeric nature of its genome. Combinatorial analysis of histone marks and DNA methylation demonstrates the presence of an epigenetic code defining activating or repressive chromatin states. We further profile three specific histone marks under conditions of nitrate depletion and show that the histone code is dynamic and targets specific sets of genes. CONCLUSIONS This study is the first genome-wide characterization of the histone code from a stramenopile and a marine phytoplankton. The work represents an important initial step for understanding the evolutionary history of chromatin and how epigenetic modifications affect gene expression in response to environmental cues in marine environments.
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Affiliation(s)
- Alaguraj Veluchamy
- Ecology and Evolutionary Biology Section, Institut de Biologie de l'École Normale Supérieure (IBENS), CNRS UMR8197 INSERM U1024, 46 rue d'Ulm, 75005, Paris, France. .,Present address: BESE Division, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
| | - Achal Rastogi
- Ecology and Evolutionary Biology Section, Institut de Biologie de l'École Normale Supérieure (IBENS), CNRS UMR8197 INSERM U1024, 46 rue d'Ulm, 75005, Paris, France.
| | - Xin Lin
- Ecology and Evolutionary Biology Section, Institut de Biologie de l'École Normale Supérieure (IBENS), CNRS UMR8197 INSERM U1024, 46 rue d'Ulm, 75005, Paris, France. .,Present address: State key lab of Marine Environmental Science, Xiamen University, Xiamen, 361005, China.
| | - Bérangère Lombard
- Institut Curie, PSL Research University, Centre de Recherche, Laboratoire de Spectrométrie de Masse Protéomique, 26 rue d'Ulm, 75248, Cedex 05 Paris, France.
| | - Omer Murik
- Ecology and Evolutionary Biology Section, Institut de Biologie de l'École Normale Supérieure (IBENS), CNRS UMR8197 INSERM U1024, 46 rue d'Ulm, 75005, Paris, France.
| | - Yann Thomas
- Ecology and Evolutionary Biology Section, Institut de Biologie de l'École Normale Supérieure (IBENS), CNRS UMR8197 INSERM U1024, 46 rue d'Ulm, 75005, Paris, France.
| | - Florent Dingli
- Institut Curie, PSL Research University, Centre de Recherche, Laboratoire de Spectrométrie de Masse Protéomique, 26 rue d'Ulm, 75248, Cedex 05 Paris, France.
| | - Maximo Rivarola
- Institute for Genome Sciences (IGS), University of Maryland School of Medicine, Baltimore, MD, 21201, USA. .,Present address: Instituto de Biotecnología, CICVyA, Instituto Nacional de Tecnología Agropecuaria (INTA Castelar), CC 25, Castelar, B1712WAA, Argentina.
| | - Sandra Ott
- Institute for Genome Sciences (IGS), University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
| | - Xinyue Liu
- Institute for Genome Sciences (IGS), University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
| | - Yezhou Sun
- Institute for Genome Sciences (IGS), University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
| | - Pablo D Rabinowicz
- Institute for Genome Sciences (IGS), University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
| | - James McCarthy
- J. Craig Venter Institute, 10355 Science Center Drive, San Diego, CA, 92121, USA.
| | - Andrew E Allen
- J. Craig Venter Institute, 10355 Science Center Drive, San Diego, CA, 92121, USA. .,Scripps Institution of Oceanography, Integrative Oceanography Division, University of California, San Diego, CA, 92093, USA.
| | - Damarys Loew
- Institut Curie, PSL Research University, Centre de Recherche, Laboratoire de Spectrométrie de Masse Protéomique, 26 rue d'Ulm, 75248, Cedex 05 Paris, France.
| | - Chris Bowler
- Ecology and Evolutionary Biology Section, Institut de Biologie de l'École Normale Supérieure (IBENS), CNRS UMR8197 INSERM U1024, 46 rue d'Ulm, 75005, Paris, France.
| | - Leïla Tirichine
- Ecology and Evolutionary Biology Section, Institut de Biologie de l'École Normale Supérieure (IBENS), CNRS UMR8197 INSERM U1024, 46 rue d'Ulm, 75005, Paris, France.
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Zhan X, Yi X, Yue L, Fan X, Xu G, Xing B. Cytoplasmic pH-Stat during Phenanthrene Uptake by Wheat Roots: A Mechanistic Consideration. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:6037-6044. [PMID: 25923043 DOI: 10.1021/acs.est.5b00697] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Dietary intake of plant-based foods is a major contribution to the total exposure of polycyclic aromatic hydrocarbons (PAHs). However, the mechanisms underlying PAH uptake by roots remain poorly understood. This is the first study, to our knowledge, to reveal cytoplasmic pH change and regulation in response to PAH uptake by wheat roots. An initial drop of cytoplasmic pH, which is concentration-dependent upon exposure to phenanthrene (a model PAH), was followed by a slow recovery, indicating the operation of a powerful cytoplasmic pH regulating system. Intracellular buffers are prevalent and act in the first few minutes of acidification. Phenanthrene activates plasmalemma and tonoplast H(+) pump. Cytolasmic acidification is also accompanied by vacuolar acidification. In addition, phenanthrene decreases the activity of phosphoenolpyruvate carboxylase and malate concentration. Moreover, phenanthrene stimulates nitrate reductase. Therefore, it is concluded that phenanthrene uptake induces cytoplasmic acidification, and cytoplasmic pH recovery is achieved via physicochemical buffering, proton transport outside cytoplasm into apoplast and vacuole, and malate decarboxylation along with nitrate reduction. Our results provide a novel insight into PAH uptake by wheat roots, which is relevant to strategies for reducing PAH accumulation in wheat for food safety and improving phytoremediation of PAH-contaminated soils or water by agronomic practices.
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Affiliation(s)
- Xinhua Zhan
- †College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, People's Republic of China
| | - Xiu Yi
- †College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, People's Republic of China
| | - Le Yue
- †College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, People's Republic of China
- ‡Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Xiaorong Fan
- †College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, People's Republic of China
| | - Guohua Xu
- †College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, People's Republic of China
| | - Baoshan Xing
- ‡Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States
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42
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Pizzio GA, Paez-Valencia J, Khadilkar AS, Regmi K, Patron-Soberano A, Zhang S, Sanchez-Lares J, Furstenau T, Li J, Sanchez-Gomez C, Valencia-Mayoral P, Yadav UP, Ayre BG, Gaxiola RA. Arabidopsis type I proton-pumping pyrophosphatase expresses strongly in phloem, where it is required for pyrophosphate metabolism and photosynthate partitioning. PLANT PHYSIOLOGY 2015. [PMID: 25681328 PMCID: PMC4378186 DOI: 10.1104/pp.15.00378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Phloem loading is a critical process in plant physiology. The potential of regulating the translocation of photoassimilates from source to sink tissues represents an opportunity to increase crop yield. Pyrophosphate homeostasis is crucial for normal phloem function in apoplasmic loaders. The involvement of Arabidopsis (Arabidopsis thaliana) type I proton-pumping pyrophosphatase (AVP1) in phloem loading was analyzed at genetic, histochemical, and physiological levels. A transcriptional AVP1 promoter::GUS fusion revealed phloem activity in source leaves. Ubiquitous AVP1 overexpression (35S::AVP1 cassette) enhanced shoot biomass, photoassimilate production and transport, rhizosphere acidification, and expression of sugar-induced root ion transporter genes (POTASSIUM TRANSPORTER2 [KUP2], NITRATE TRANSPORTER2.1 [NRT2.1], NRT2.4, and PHOSPHATE TRANSPORTER1.4 [PHT1.4]). Phloem-specific AVP1 overexpression (Commelina Yellow Mottle Virus promoter [pCOYMV]::AVP1) elicited similar phenotypes. By contrast, phloem-specific AVP1 knockdown (pCoYMV::RNAiAVP1) resulted in stunted seedlings in sucrose-deprived medium. We also present a promoter mutant avp1-2 (SALK046492) with a 70% reduction of expression that did not show severe growth impairment. Interestingly, AVP1 protein in this mutant is prominent in the phloem. Moreover, expression of an Escherichia coli-soluble pyrophosphatase in the phloem (pCoYMV::pyrophosphatase) of avp1-2 plants resulted in severe dwarf phenotype and abnormal leaf morphology. We conclude that the Proton-Pumping Pyrophosphatase AVP1 localized at the plasma membrane of the sieve element-companion cell complexes functions as a synthase, and that this activity is critical for the maintenance of pyrophosphate homeostasis required for phloem function.
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Affiliation(s)
- Gaston A Pizzio
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Julio Paez-Valencia
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Aswad S Khadilkar
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Kamesh Regmi
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Araceli Patron-Soberano
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Shangji Zhang
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Jonathan Sanchez-Lares
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Tara Furstenau
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Jisheng Li
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Concepcion Sanchez-Gomez
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Pedro Valencia-Mayoral
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Umesh P Yadav
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Brian G Ayre
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Roberto A Gaxiola
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
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Pizzio GA, Paez-Valencia J, Khadilkar AS, Regmi K, Patron-Soberano A, Zhang S, Sanchez-Lares J, Furstenau T, Li J, Sanchez-Gomez C, Valencia-Mayoral P, Yadav UP, Ayre BG, Gaxiola RA. Arabidopsis type I proton-pumping pyrophosphatase expresses strongly in phloem, where it is required for pyrophosphate metabolism and photosynthate partitioning. PLANT PHYSIOLOGY 2015; 167:1541-53. [PMID: 25681328 PMCID: PMC4378163 DOI: 10.1104/pp.114.254342] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Phloem loading is a critical process in plant physiology. The potential of regulating the translocation of photoassimilates from source to sink tissues represents an opportunity to increase crop yield. Pyrophosphate homeostasis is crucial for normal phloem function in apoplasmic loaders. The involvement of Arabidopsis (Arabidopsis thaliana) type I proton-pumping pyrophosphatase (AVP1) in phloem loading was analyzed at genetic, histochemical, and physiological levels. A transcriptional AVP1 promoter::GUS fusion revealed phloem activity in source leaves. Ubiquitous AVP1 overexpression (35S::AVP1 cassette) enhanced shoot biomass, photoassimilate production and transport, rhizosphere acidification, and expression of sugar-induced root ion transporter genes (POTASSIUM TRANSPORTER2 [KUP2], NITRATE TRANSPORTER2.1 [NRT2.1], NRT2.4, and PHOSPHATE TRANSPORTER1.4 [PHT1.4]). Phloem-specific AVP1 overexpression (Commelina Yellow Mottle Virus promoter [pCOYMV]::AVP1) elicited similar phenotypes. By contrast, phloem-specific AVP1 knockdown (pCoYMV::RNAiAVP1) resulted in stunted seedlings in sucrose-deprived medium. We also present a promoter mutant avp1-2 (SALK046492) with a 70% reduction of expression that did not show severe growth impairment. Interestingly, AVP1 protein in this mutant is prominent in the phloem. Moreover, expression of an Escherichia coli-soluble pyrophosphatase in the phloem (pCoYMV::pyrophosphatase) of avp1-2 plants resulted in severe dwarf phenotype and abnormal leaf morphology. We conclude that the Proton-Pumping Pyrophosphatase AVP1 localized at the plasma membrane of the sieve element-companion cell complexes functions as a synthase, and that this activity is critical for the maintenance of pyrophosphate homeostasis required for phloem function.
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Affiliation(s)
- Gaston A Pizzio
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Julio Paez-Valencia
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Aswad S Khadilkar
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Kamesh Regmi
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Araceli Patron-Soberano
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Shangji Zhang
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Jonathan Sanchez-Lares
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Tara Furstenau
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Jisheng Li
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Concepcion Sanchez-Gomez
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Pedro Valencia-Mayoral
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Umesh P Yadav
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Brian G Ayre
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
| | - Roberto A Gaxiola
- School of Life Sciences, Arizona State University, Tempe, Arizona 852872 (G.A.P., J.P.-V., K.R., S.Z., J.S.-L., T.F., J.L., R.A.G.);Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (J.P.-V.);Department of Biological Sciences, University of North Texas, Denton, Texas 762031 (A.S.K., U.P.Y., B.G.A.);División de Biología Molecular, Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnología Instituto Potosino de Investigación Científica y Tecnológica, A.C. 78216 San Luis Potosí, Mexico (A.P.-S.); andDepartamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico (C.S.-G., P.V.-M.)
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Yang H, Zhang X, Gaxiola RA, Xu G, Peer WA, Murphy AS. Over-expression of the Arabidopsis proton-pyrophosphatase AVP1 enhances transplant survival, root mass, and fruit development under limiting phosphorus conditions. JOURNAL OF EXPERIMENTAL BOTANY 2014; 65:3045-53. [PMID: 24723407 PMCID: PMC4071825 DOI: 10.1093/jxb/eru149] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Phosphorus (P), an element required for plant growth, fruit set, fruit development, and fruit ripening, can be deficient or unavailable in agricultural soils. Previously, it was shown that over-expression of a proton-pyrophosphatase gene AVP1/AVP1D (AVP1DOX) in Arabidopsis, rice, and tomato resulted in the enhancement of root branching and overall mass with the result of increased mineral P acquisition. However, although AVP1 over-expression also increased shoot biomass in Arabidopsis, this effect was not observed in tomato under phosphate-sufficient conditions. AVP1DOX tomato plants exhibited increased rootward auxin transport and root acidification compared with control plants. AVP1DOX tomato plants were analysed in detail under limiting P conditions in greenhouse and field trials. AVP1DOX plants produced 25% (P=0.001) more marketable ripened fruit per plant under P-deficient conditions compared with the controls. Further, under low phosphate conditions, AVP1DOX plants displayed increased phosphate transport from leaf (source) to fruit (sink) compared to controls. AVP1DOX plants also showed an 11% increase in transplant survival (P<0.01) in both greenhouse and field trials compared with the control plants. These results suggest that selection of tomato cultivars for increased proton pyrophosphatase gene expression could be useful when selecting for cultivars to be grown on marginal soils.
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Affiliation(s)
- Haibing Yang
- Department of Horticulture, Purdue University, West Lafayette, IN 47907, USA
| | - Xiao Zhang
- Department of Horticulture, Purdue University, West Lafayette, IN 47907, USA State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Roberto A Gaxiola
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Guohua Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Wendy Ann Peer
- Department of Horticulture, Purdue University, West Lafayette, IN 47907, USA Department of Environmental Science and Technology, University of Maryland, 1443 Animal Sciences, College Park, MD 20742, USA Department of Plant Science and Landscape Architecture, University of Maryland, 2106 Plant Science Building, College Park, MD 20742, USA
| | - Angus S Murphy
- Department of Horticulture, Purdue University, West Lafayette, IN 47907, USA Department of Plant Science and Landscape Architecture, University of Maryland, 2106 Plant Science Building, College Park, MD 20742, USA
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Schilling RK, Marschner P, Shavrukov Y, Berger B, Tester M, Roy SJ, Plett DC. Expression of the Arabidopsis vacuolar H⁺-pyrophosphatase gene (AVP1) improves the shoot biomass of transgenic barley and increases grain yield in a saline field. PLANT BIOTECHNOLOGY JOURNAL 2014; 12:378-86. [PMID: 24261956 DOI: 10.1111/pbi.12145] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 09/20/2013] [Accepted: 10/14/2013] [Indexed: 05/20/2023]
Abstract
Cereal varieties with improved salinity tolerance are needed to achieve profitable grain yields in saline soils. The expression of AVP1, an Arabidopsis gene encoding a vacuolar proton pumping pyrophosphatase (H⁺-PPase), has been shown to improve the salinity tolerance of transgenic plants in greenhouse conditions. However, the potential for this gene to improve the grain yield of cereal crops in a saline field has yet to be evaluated. Recent advances in high-throughput nondestructive phenotyping technologies also offer an opportunity to quantitatively evaluate the growth of transgenic plants under abiotic stress through time. In this study, the growth of transgenic barley expressing AVP1 was evaluated under saline conditions in a pot experiment using nondestructive plant imaging and in a saline field trial. Greenhouse-grown transgenic barley expressing AVP1 produced a larger shoot biomass compared to null segregants, as determined by an increase in projected shoot area, when grown in soil with 150 mM NaCl. This increase in shoot biomass of transgenic AVP1 barley occurred from an early growth stage and also in nonsaline conditions. In a saline field, the transgenic barley expressing AVP1 also showed an increase in shoot biomass and, importantly, produced a greater grain yield per plant compared to wild-type plants. Interestingly, the expression of AVP1 did not alter barley leaf sodium concentrations in either greenhouse- or field-grown plants. This study validates our greenhouse-based experiments and indicates that transgenic barley expressing AVP1 is a promising option for increasing cereal crop productivity in saline fields.
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Affiliation(s)
- Rhiannon K Schilling
- Australian Centre for Plant Functional Genomics, Adelaide, SA, Australia; School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA, Australia
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Venancio JB, Catunda MG, Ogliari J, Rima JAH, Okorokova-Facanha AL, Okorokov LA, Facanha AR. A vacuolar H(+)-pyrophosphatase differential activation and energy coupling integrate the responses of weeds and crops to drought stress. Biochim Biophys Acta Gen Subj 2013; 1840:1987-92. [PMID: 24365406 DOI: 10.1016/j.bbagen.2013.12.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 12/04/2013] [Accepted: 12/15/2013] [Indexed: 11/24/2022]
Abstract
BACKGROUND Cyperus rotundus L. is a C4 weed of large vegetative and reproductive vigor endowed with competitive advantages over most crop species mainly under adverse environmental conditions. Vacuole functions are critical for the mechanisms of drought resistance, and here the modulation of the primary system of vacuolar ion transport is investigated during a transient water stress imposed to this weed and to C4 crop species (Zea mays L.). METHODS The vacuolar H(+) pumps, the H(+)-ATPase and H(+)-PPiase, expression, activities and the energy coupling were spectrophotometrically investigated as key elements in the differential drought-resistance mechanisms developed by weeds and crops. RESULTS In C. rotundus tonoplasts, ATP hydrolysis was more sensitive to drought than its coupled H(+) transport, which was in turn at least 3-folds faster than that mediated by the H(+)-PPiase. Its PPi hydrolysis was only slightly affected by severe water deficit, contrasting with the disruption induced in the PPi-dependent H(+)-gradient. This effect was antagonized by plant rehydration as the H(+)-PPiase activity was highly stimulated, reassuming a coupled PPi-driven H(+) pumping. Maize tonoplasts exhibited 2-4 times lower hydrolytic activities than that of C. rotundus, but were able to overactivate specifically PPi-dependent H(+) pumping in response to stress relief, resulting in an enhanced H(+)-pumps coupling efficiency. CONCLUSION These results together with immunoanalysis revealed profiles consistent with pre- and post-translational changes occurring on the tonoplast H(+)-pumps, which differ between weeds and crops upon water deficit. GENERAL SIGNIFICANCE The evidences highlight an unusual modulation of the H(+)-PPiase energy coupling as a key biochemical change related to environmental stresses adaptive capacity of plants.
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Affiliation(s)
- Josimara Barcelos Venancio
- Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil; Núcleo de Desenvolvimento de Insumos Biológicos para Agricultura (NUDIBA), Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil
| | | | - Juarez Ogliari
- Instituto Federal Fluminense, Bom Jesus do Itabapoana, RJ, Brazil
| | - Janaína Aparecida Hottz Rima
- Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil; Núcleo de Desenvolvimento de Insumos Biológicos para Agricultura (NUDIBA), Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil
| | - Anna Lvovna Okorokova-Facanha
- Laboratório de Fisiologia e Bioquímica de Microorganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil
| | - Lev Alexandrovitich Okorokov
- Laboratório de Fisiologia e Bioquímica de Microorganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil
| | - Arnoldo Rocha Facanha
- Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil; Núcleo de Desenvolvimento de Insumos Biológicos para Agricultura (NUDIBA), Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil.
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Fischer JJ, Beatty PH, Good AG, Muench DG. Manipulation of microRNA expression to improve nitrogen use efficiency. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2013; 210:70-81. [PMID: 23849115 DOI: 10.1016/j.plantsci.2013.05.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 04/24/2013] [Accepted: 05/16/2013] [Indexed: 05/02/2023]
Abstract
Nitrogen is the key limiting nutrient required for plant growth. The application of nitrogen-based fertilizers to crops has risen dramatically in recent years, resulting in significant yield increases. However, increased production has come at the cost of substantial negative environmental consequences. Higher crop production costs, increased consumption of food and fertilizer, and a growing global population have led to calls for a "second green revolution" using modern genetic manipulation techniques to improve the production, yield, and quality of crops. Considerable research is being directed toward the study and engineering of nitrogen use efficiency in crop plants. The end goal is to reduce the amount of nitrogen-based fertilizer used and thereby reduce production costs and environmental damage while increasing yields. In this review, we present an overview of recent advances in understanding the regulation of nitrogen metabolism by the action of microRNAs with a view toward engineering crops with increased nitrogen use efficiency.
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Affiliation(s)
- Jeffrey J Fischer
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada T2N 1N4
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