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Li Z, Gao J, Wang B, Zhang H, Tian Y, Peng R, Yao Q. Ectopic expression of an Old Yellow Enzyme (OYE3) gene from Saccharomyces cerevisiae increases the tolerance and phytoremediation of 2-nitroaniline in rice. Gene 2024; 906:148239. [PMID: 38325666 DOI: 10.1016/j.gene.2024.148239] [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: 12/10/2023] [Revised: 01/27/2024] [Accepted: 01/31/2024] [Indexed: 02/09/2024]
Abstract
2-nitroaniline (2-NA) is an environmental pollutant and has been extensively used as intermediates in organic synthesis. The presence of 2-NA in the environment is not only harmful for aquatic life but also mutagenic for human beings. In this study, we constructed transgenic rice expressing an Old Yellow Enzyme gene, ScOYE3, from Saccharomyces cerevisiae. The ScOYE3 transgenic plants were comprehensively investigated for their biochemical responses to 2-NA treatment and their 2-NA phytoremediation capabilities. Our results showed that the rice seedlings exposed to 2-NA stress, showed growth inhibition and biomass reduction. However, the transgenic plants exhibited strong tolerance to 2-NA stress compared to wild-type plants. Ectopic expression of ScOYE3 could effectively protect transgenic plants against 2-NA damage, which resulted in less reactive oxygen species accumulation in transgenic plants than that in wild-type plants. Our phytoremediation assay revealed that transgenic plants could eliminate more 2-NA from the medium than wild-type plants. Moreover, omics analysis was performed in order to get a deeper insight into the mechanism of ScOYE3-mediated 2-NA transformation in rice. Altogether, the function of ScOYE3 during 2-NA detoxification was characterized for the first time, which serves as strong theoretical support for the phytoremediation potential of 2-NA by Old Yellow Enzyme genes.
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Affiliation(s)
- Zhenjun Li
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai 201106, PR China
| | - Jianjie Gao
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai 201106, PR China
| | - Bo Wang
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai 201106, PR China
| | - Hao Zhang
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai 201106, PR China
| | - Yongsheng Tian
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai 201106, PR China.
| | - Rihe Peng
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai 201106, PR China.
| | - Quanhong Yao
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai 201106, PR China.
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Li Z, Gao J, Tian Y, Wang B, Xu J, Fu X, Han H, Wang L, Zhang W, Wang Y, Deng Y, Gong Z, Peng R, Yao Q. ElNFS1, a nitroreductase gene from Enterobacter ludwigii, confers enhanced detoxification and phytoremediation of 4-nitrobenzaldehyde in rice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 314:120292. [PMID: 36181935 DOI: 10.1016/j.envpol.2022.120292] [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: 06/07/2022] [Revised: 08/22/2022] [Accepted: 09/24/2022] [Indexed: 06/16/2023]
Abstract
4-nitrobenzaldehyde (4-NBA) is a widely used chemical intermediate for industrial application and an important photodegradation product of chloramphenicol. This compound represents a substantial threat to human health and ecosystem due to its genotoxic and mutagenic effect. In this study, the 4-NBA detoxification by transgenic rice overexpressing a bacterial nitroreductase gene, ElNFS1, from Enterobacter ludwigii were investigated. The cytosol-targeted ElNFS1 transgenic plants were selected to comprehensively examine their physio-biochemical responses and phytoremediation potential to 4-NBA. Our results showed that the transgenic plants exhibited strong tolerance to 4-NBA. Overexpression of ElNFS1 could significantly alleviate 4-NBA-induced damages of photosynthetic apparatus and reactive oxygen species overproduction in transgenic plants. The phytoremediation assay revealed that transgenic plants could remove more 4-NBA from the medium than wild-type plants. HPLC and LC-MS assays showed that 4-aminobenzaldehyde was found in the reductive products of 4-NBA. Altogether, the function of ElNFS1 during 4-NBA detoxification was characterized for the first time, which provides a strong theoretical support for the application potential of ElNFS1 transgenic plants on the phytoremediation of 4-NBA.
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Affiliation(s)
- Zhenjun Li
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Jianjie Gao
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Yongsheng Tian
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Bo Wang
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Jing Xu
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Xiaoyan Fu
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Hongjuan Han
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Lijuan Wang
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Wenhui Zhang
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Yu Wang
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Yongdong Deng
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Zehao Gong
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Rihe Peng
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China
| | - Quanhong Yao
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd, Shanghai, 201106, PR China.
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3
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Chen Z, Peng Z, Liu S, Leng H, Luo J, Wang F, Yi Y, Resco de Dios V, Lucas GR, Yao Y, Gao Y. Overexpression of PeNAC122 gene promotes wood formation and tolerance to osmotic stress in poplars. PHYSIOLOGIA PLANTARUM 2022; 174:e13751. [PMID: 36004736 DOI: 10.1111/ppl.13751] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 06/28/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
Finding the adequate balance between wood formation and abiotic stress resistance is still an important challenge for industrial woody crops. In this study, PeNAC122, a member of the NAC transcription factor (TF) family highly expressed in xylem, was cloned from Populus euphratica. Tissue expression and β-glucuronidase (GUS) staining showed that PeNAC122 was exclusively expressed in phloem fiber and secondary xylem of stems. Subcellular and yeast transactivation assays confirmed that PeNAC122 protein existed in the nucleus and did not have transcriptional activation and inhibitory activity. Overexpression of PeNAC122 poplar lines exhibited reduced plant height, thickened xylem, and accumulated lignin content in stems, and also upregulates the expression of secondary cell wall biosynthetic genes. Moreover, overexpression of PeNAC122 lines displayed more tolerance to PEG6000-induced osmotic stress, with stronger photosynthetic performance, higher antioxidant enzyme activity, and less accumulation of reactive oxygen species in leaves, and higher expression levels of stress response genes DREB2A, RD29, and NCED3. These results indicate that PeNAC122 plays a crucial role in wood formation and abiotic stress tolerance, which, in addition to potential use in improving wood quality, provides further insight into the role of NAC family TFs in balancing wood development and abiotic stress resistance.
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Affiliation(s)
- Zihao Chen
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Zhuoxi Peng
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Siqin Liu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Haiqin Leng
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Jianxun Luo
- Institute of Forestry, Sichuan Academy of Forestry, Chengdu, People's Republic of China
| | - Fei Wang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Yuanyuan Yi
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Víctor Resco de Dios
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Gutiérrez Rodríguez Lucas
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Yinan Yao
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Yongfeng Gao
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
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Wang J, Zhai L, Ma J, Zhang J, Wang GG, Liu X, Zhang S, Song J, Wu Y. Comparative physiological mechanisms of arbuscular mycorrhizal fungi in mitigating salt-induced adverse effects on leaves and roots of Zelkova serrata. MYCORRHIZA 2020; 30:341-355. [PMID: 32388674 DOI: 10.1007/s00572-020-00954-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
Arbuscular mycorrhizal (AM) fungi enhance plant salt tolerance. However, physiological mechanisms of enhanced salt tolerance in leaves and roots of trees rarely have been compared. To reveal the different mechanisms, our study utilized comprehensive analyses of leaves and roots to examine the effects of Funneliformis mosseae on the salinity tolerance of Zelkova serrata. Seedlings of Z. serrata were exposed to four salt levels in a greenhouse with and without F. mosseae inoculation. Treatment comparisons revealed that following F. mosseae inoculation, (1) nutrient deficiency caused by osmotic stress was mitigated by the fungus enhancing nutrient contents (K, Ca, and Mg) in roots and (N, P, K, Ca, and Mg) in leaves, with Ca and K contents being higher in both leaves and roots; (2) mycorrhizas alleviated ion toxicity by maintaining a favorable ion balance (e.g., K+/Na+), and this regulatory effect was higher in leaves than that in roots; and (3) oxidative damage was reduced by an increase in the activities of antioxidant enzymes and accumulation of antioxidant compounds in mycorrhizal plants although the increase differed in leaves and roots. In particular, AM fungus-enhanced catalase activity and reduced glutathione content only occurred in leaves, whereas an enhanced content of reduced ascorbic acid was only noted in roots. Growth, root vitality, leaf photosynthetic pigments, net photosynthetic rate, and dry weight were higher in seedlings with AM fungus inoculation. These results suggest that AM fungus inoculation improved salinity tolerance of Z. serrata, but the physiological mechanisms differed between leaves and roots.
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Affiliation(s)
- Jinping Wang
- Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, Jiangsu, China
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC, 29634, USA
| | - Lu Zhai
- Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Jieyi Ma
- Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, Jiangsu, China
| | - Jinchi Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, Jiangsu, China.
| | - G Geoff Wang
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC, 29634, USA.
| | - Xin Liu
- Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, Jiangsu, China
| | - Shuifeng Zhang
- Department of Forest Fire, Nanjing Forest Police College, Nanjing, 210023, Jiangsu, China
| | - Juan Song
- Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, Jiangsu, China
| | - Yingkang Wu
- Dafeng Forest Farm, Yancheng, 224136, Jiangsu, China
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Akhtar A, Rizvi Z, Irfan M, Maqbool A, Bashir A, Abdulla Malik K. Biochemical and morphological risk assessment of transgenic wheat with enhanced iron and zinc bioaccessibility. J Cereal Sci 2020. [DOI: 10.1016/j.jcs.2019.102881] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Tian S, Liang S, Qiao K, Wang F, Zhang Y, Chai T. Co-expression of multiple heavy metal transporters changes the translocation, accumulation, and potential oxidative stress of Cd and Zn in rice (Oryza sativa). JOURNAL OF HAZARDOUS MATERIALS 2019; 380:120853. [PMID: 31279944 DOI: 10.1016/j.jhazmat.2019.120853] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 05/20/2019] [Accepted: 06/29/2019] [Indexed: 05/07/2023]
Abstract
The OsHMA2, OsLCT1 and OsZIP3 transporters were all involved in zinc (Zn) and cadmium (Cd) transport. So far, only a few researches studied on the co-regulation effect of three transporters related to Zn and Cd transport. The present study showed that rice co-expressing OsLCT1-OsHMA2-OsZIP3 (LHZ) had longer roots and shoots than wild-type (WT) rice after Zn and Cd treatments. The chlorophyll content was significantly higher, and the proline, malondialdehyde and H2O2 contents were significantly lower in co-transgenic lines than in WT under Cd and Zn stress. LHZ in the seedlings of transgenic rice decreased the root-to-shoot translocation of Cd after Cd and Zn treatments. At the filling stage, LHZ line reduced Cd accumulation in grain after Cd treatment. Moreover, LHZ line increased the translocation of Zn to grain and reduced the accumulation of Cd after Zn treatment. These results suggested that LHZ co-expression could effectively decrease the translocation and accumulation of Cd to grains, alleviated the oxidative stress of Cd and Zn, and finally enhanced the quality and safety of rice grains.
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Affiliation(s)
- Siqi Tian
- College of Life Science, University of the Chinese Academy of Sciences, Beijing, China
| | - Shuang Liang
- College of Life Science, University of the Chinese Academy of Sciences, Beijing, China
| | - Kun Qiao
- College of Life Science, University of the Chinese Academy of Sciences, Beijing, China
| | - Fanhong Wang
- College of Life Science, University of the Chinese Academy of Sciences, Beijing, China
| | - Yuxiu Zhang
- School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing, China
| | - Tuanyao Chai
- College of Life Science, University of the Chinese Academy of Sciences, Beijing, China.
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7
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Kang Y, Torres‐Jerez I, An Z, Greve V, Huhman D, Krom N, Cui Y, Udvardi M. Genome-wide association analysis of salinity responsive traits in Medicago truncatula. PLANT, CELL & ENVIRONMENT 2019; 42:1513-1531. [PMID: 30593671 PMCID: PMC6850670 DOI: 10.1111/pce.13508] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 12/16/2018] [Indexed: 05/19/2023]
Abstract
Salinity stress is an important cause of crop yield loss in many parts of the world. Here, we performed genome-wide association studies of salinity-stress responsive traits in 132 HapMap genotypes of the model legume Medicago truncatula. Plants grown in soil were subjected to a step-wise increase in NaCl concentration, from 0 through 0.5% and 1.0% to 1.5%, and the following traits were measured: vigor, shoot biomass, shoot water content, leaf chlorophyll content, leaf size, and leaf and root concentrations of proline and major ions (Na+ , Cl- , K+ , Ca2+ , etc.). Genome-wide association studies were carried out using 2.5 million single nucleotide polymorphisms, and 12 genomic regions associated with at least four traits each were identified. Transcript-level analysis of the top eight candidate genes in five extreme genotypes revealed association between salinity tolerance and transcript-level changes for seven of the genes, encoding a vacuolar H+ -ATPase, two transcription factors, two proteins involved in vesicle trafficking, one peroxidase, and a protein of unknown function. Earlier functional studies on putative orthologues of two of the top eight genes (a vacuolar H+ -ATPase and a peroxidase) demonstrated their involvement in plant salinity tolerance.
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Affiliation(s)
- Yun Kang
- Noble Research InstituteArdmoreOklahoma73401
| | | | - Zewei An
- State Center for Rubber Breeding and Rubber Research InstituteDanzhouHainan571700China
| | - Veronica Greve
- College of Biological SciencesUniversity of MinnesotaHuntsvilleAlabama35806
| | | | | | - Yuehua Cui
- Department of Statistics and ProbabilityMichigan State UniversityEast LansingMichigan48824
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Ma Y, Wang P, Chen Z, Gu Z, Yang R. GABA enhances physio-biochemical metabolism and antioxidant capacity of germinated hulless barley under NaCl stress. JOURNAL OF PLANT PHYSIOLOGY 2018; 231:192-201. [PMID: 30278315 DOI: 10.1016/j.jplph.2018.09.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 09/20/2018] [Accepted: 09/20/2018] [Indexed: 05/05/2023]
Abstract
The effects of exogenous γ-aminobutyric acid (GABA) on the endogenous GABA metabolism and antioxidant capacity of germinated hulless barley (Hordeum vulgare L.) under NaCl stress were investigated. The results showed that all of the GABA treatments could alleviate the growth inhibition and oxidative damage by NaCl stress, with 0.5 mM being the most effective concentration. The GABA-treated barley seedlings exhibited a significantly higher content of endogenous GABA and other free amino acids, especially proline, which resulted from the changes in corresponding enzyme activity. The phenylalanine ammonia lyase (PAL), cinnamic acid 4-hydroxylase (C4H), and 4-coumarate coenzyme A ligase (4CL) activities also increased in GABA-treated barley, which led to higher total phenolic content and antioxidant capacity than that of the control barley. These results indicate that GABA treatment may be an effective way to relieve salt stress as it induces the accumulation of endogenous GABA and proline and total phenolic content, thus enhancing the antioxidant capacity.
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Affiliation(s)
- Yan Ma
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
| | - Pei Wang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
| | - Zhijie Chen
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China; College of Food Science and Technology, Jiangsu Food and Pharmaceutical Science College, Huaian, 223005, People's Republic of China.
| | - Zhenxin Gu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
| | - Runqiang Yang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
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Nahar MNEN, Islam MM, Hoque MA, Yonezawa A, Prodhan MY, Nakamura T, Nakamura Y, Munemasa S, Murata Y. Exogenous proline enhances the sensitivity of Tobacco BY-2 cells to arsenate. Biosci Biotechnol Biochem 2017; 81:1726-1731. [PMID: 28622092 DOI: 10.1080/09168451.2017.1340088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 05/31/2017] [Indexed: 01/24/2023]
Abstract
Arsenic causes physiological and structural disorders in plants. Proline is accumulated as a compatible solute in plants under various stress conditions and mitigates stresses. Here, we investigated the effects of exogenous proline on tobacco Bright Yellow-2 (BY-2) cultured cells under [Formula: see text] stress. Arsenate did not inhibit BY-2 cell growth at 40 and 50 μM but did it at 60 μM. Proline at 0.5 to 10 mM did not affect the cell growth but delayed it at 20 mM. At 40 μM [Formula: see text], neither 0.5 mM nor 1 mM proline affected the cell growth but 10 mM proline inhibited it. In the presence of [Formula: see text], 10 mM proline increased the number of Evans Blue-stained (dead) cells and decreased the number of total cells. Together, our results suggest that exogenous proline does not alleviate arsenate toxicity but enhances the sensitivity of BY-2 cells to arsenate.
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Affiliation(s)
- Mst Nur-E-Nazmun Nahar
- a Graduate School of Environmental and Life Science , Okayama University , Okayama , Japan
| | | | - Md Anamul Hoque
- a Graduate School of Environmental and Life Science , Okayama University , Okayama , Japan
| | - Anna Yonezawa
- a Graduate School of Environmental and Life Science , Okayama University , Okayama , Japan
| | - Md Yeasin Prodhan
- a Graduate School of Environmental and Life Science , Okayama University , Okayama , Japan
| | - Toshiyuki Nakamura
- a Graduate School of Environmental and Life Science , Okayama University , Okayama , Japan
| | - Yoshimasa Nakamura
- a Graduate School of Environmental and Life Science , Okayama University , Okayama , Japan
| | - Shintaro Munemasa
- a Graduate School of Environmental and Life Science , Okayama University , Okayama , Japan
| | - Yoshiyuki Murata
- a Graduate School of Environmental and Life Science , Okayama University , Okayama , Japan
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10
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Mansour MMF, Ali EF. Evaluation of proline functions in saline conditions. PHYTOCHEMISTRY 2017; 140:52-68. [PMID: 28458142 DOI: 10.1016/j.phytochem.2017.04.016] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/10/2017] [Accepted: 04/20/2017] [Indexed: 05/20/2023]
Abstract
More than one third of the world's irrigated lands are affected by salinity, which has great impact on plant growth and yield worldwide. Proline accumulation under salt stress has been indicated to correlate with salt tolerance. Exogenous application as well as genetic engineering of metabolic pathways involved in the metabolism of proline has been successful in improving tolerance to salinity. Correlation between proline accumulation as well as its proposed roles and salt adaptation, however, has not been clearly confirmed in several plant species. In addition, the studies relating proline functions and plant salt tolerance are always carried out in growth chambers, and are not successfully verified in field conditions. Further, plant salt tolerance is a complex trait, and studies based solely on proline accumulation do not adequately explain its functions in salinity tolerance, and thus it is difficult to interpret the discrepancies among different data. Moreover, several reports indicate that Pro role in salt tolerance is a matter of debates, as whether Pro accumulation has adaptive significance or is a consequence of alterations in cellular metabolism induced by salinity. As no consensus is obtained on the exact roles of proline production, proline exact roles in the adaptation to saline environments is therefore still lacking and is even a matter of debates. It is obvious that comprehensive future research is needed to establish the proline exact mechanism by which it enhances plant salt tolerance. We propose, however, that proline might be essential for improving salinity tolerance in some species/cultivars, but may not be relevant in others. Evidence supporting both arguments has been presented in order to reassess the feasibility of the proposed roles of Pro in plant salt tolerance mechanism.
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Affiliation(s)
- Mohamed Magdy F Mansour
- Dept. of Botany, Fac. of Science, Ain Shams Univ., Cairo 11566, Egypt; Dept. of Biology, Fac. of Science, Taif Univ., Taif, Saudi Arabia.
| | - Esmat Farouk Ali
- Dept. of Horticulture (Floriculture), Fac. of Agriculture, Assuit Univ., Assuit, Egypt; Dept. of Biology, Fac. of Science, Taif Univ., Taif, Saudi Arabia
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11
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Khalil F, Rauf S, Monneveux P, Anwar S, Iqbal Z. Genetic analysis of proline concentration under osmotic stress in sunflower ( Helianthus annuus L.). BREEDING SCIENCE 2016; 66:463-470. [PMID: 27795671 PMCID: PMC5010297 DOI: 10.1270/jsbbs.15068] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 04/12/2016] [Indexed: 05/18/2023]
Abstract
Proline concentration has been often suggested as an indicator of osmotic stress. A better understanding of the genetics of this trait is however needed. In the present study, proline concentration has been assessed, together with root and stem growth, potassium, calcium and total soluble sugars concentration and stress injury symptoms, in seedlings of sunflower hybrids and their parents grown under control and osmotic conditions. Proline strongly accumulated with osmotic stress. Its concentration exhibited a large variation among genotypes and was higher in hybrids than in parental lines. A positive association was noted between proline concentration and osmotic adjustment that was reflected in a reduction of osmotic stress induced injury, as showed by the reduced number of calli in the hybrids with higher proline concentration. Broad and narrow sense heritability was higher under osmotic stress suggesting applying the selection in osmotic stress condition. In the control treatment, dominance effects explained most of the genetic variation for proline concentration while under osmotic stress both dominance and additive variance were high. The importance of dominance and additive effects suggested that several genomic regions are controlling this trait. Good general combiners, presumably carrying positive additive alleles affecting proline concentration, were identified.
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Affiliation(s)
- Farghama Khalil
- Department of Plant Breeding & Genetics, University College of Agriculture, University of Sargodha,
Pakistan
| | - Saeed Rauf
- Department of Plant Breeding & Genetics, University College of Agriculture, University of Sargodha,
Pakistan
- Plant Tissue Culture Lab, University College of Agriculture, University of Sargodha,
Pakistan
- Corresponding author (e-mail: )
| | - Philippe Monneveux
- International Potato Center (CIP),
Avenida La Molina 1895, La Molina, Lima,
Peru
| | - Shoaib Anwar
- Department of Plant Breeding & Genetics, University College of Agriculture, University of Sargodha,
Pakistan
| | - Zafar Iqbal
- Plant Tissue Culture Lab, University College of Agriculture, University of Sargodha,
Pakistan
- Department of Plant Pathology, University College of Agriculture, University of Sargodha,
Pakistan
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Pandey V, Ansari MW, Tula S, Yadav S, Sahoo RK, Shukla N, Bains G, Badal S, Chandra S, Gaur AK, Kumar A, Shukla A, Kumar J, Tuteja N. Dose-dependent response of Trichoderma harzianum in improving drought tolerance in rice genotypes. PLANTA 2016; 243:1251-64. [PMID: 26898554 DOI: 10.1007/s00425-016-2482-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 01/29/2016] [Indexed: 05/25/2023]
Abstract
This study demonstrates a dose-dependent response of Trichoderma harzianum Th-56 in improving drought tolerance in rice by modulating proline, SOD, lipid peroxidation product and DHN / AQU transcript level, and the growth attributes. In the present study, the effect of colonization of different doses of T. harzianum Th-56 strain in rice genotypes were evaluated under drought stress. The rice genotypes treated with increasing dose of T. harzianum strain Th-56 showed better drought tolerance as compared with untreated control plant. There was significant change in malondialdehyde, proline, higher superoxide dismutase level, plant height, total dry matter, relative chlorophyll content, leaf rolling, leaf tip burn, and the number of scorched/senesced leaves in T. harzianum Th-56 treated rice genotypes under drought stress. This was corroborated with altered expression of aquaporin and dehydrin genes in T. harzianum Th-56 treated rice genotypes. The present findings suggest that a dose of 30 g/L was the most effective in improving drought tolerance in rice, and its potential exploitation will contribute to the advancement of rice genotypes to sustain crop productivity under drought stress. Interaction studies of T. harzianum with three aromatic rice genotypes suggested that PSD-17 was highly benefitted from T. harzianum colonization under drought stress.
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Affiliation(s)
- Veena Pandey
- Department of Plant Physiology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
| | - Mohammad W Ansari
- Department of Botany, Zakir Husain Delhi College, University of Delhi, Jawahar Lal Nehru Marg, New Delhi, 110002, India
| | - Suresh Tula
- Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
| | - Sandep Yadav
- Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
| | - Ranjan K Sahoo
- Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
| | - Nandini Shukla
- Department of Plant Pathology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
| | - Gurdeep Bains
- Department of Plant Physiology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
| | - Shail Badal
- Department of Plant Physiology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
| | - Subhash Chandra
- Department of Agronomy, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
| | - A K Gaur
- Department of Molecular Biology and Genetic Engineering, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
| | - Atul Kumar
- Department of Plant Physiology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
| | - Alok Shukla
- Department of Plant Physiology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India.
| | - J Kumar
- Department of Plant Pathology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India.
| | - Narendra Tuteja
- Department of Botany, Zakir Husain Delhi College, University of Delhi, Jawahar Lal Nehru Marg, New Delhi, 110002, India.
- Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India.
- Amity Institute of Microbial Technology, Amity University, E2-Block, 4th Floor, Room 404A, Sector 125, Noida, 201313, UP, India.
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Boo HO, Kim YS, Kim HH, Kwon SJ, Woo SH. Evaluation of Cytotoxicity, Antimicrobial and Antioxidant Enzyme Activity of Diploid and Tetraploid Platycodon grandiflorum. ACTA ACUST UNITED AC 2015. [DOI: 10.7740/kjcs.2015.60.2.239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Bojórquez-Quintal E, Velarde-Buendía A, Ku-González Á, Carillo-Pech M, Ortega-Camacho D, Echevarría-Machado I, Pottosin I, Martínez-Estévez M. Mechanisms of salt tolerance in habanero pepper plants (Capsicum chinense Jacq.): Proline accumulation, ions dynamics and sodium root-shoot partition and compartmentation. FRONTIERS IN PLANT SCIENCE 2014; 5:605. [PMID: 25429292 PMCID: PMC4228851 DOI: 10.3389/fpls.2014.00605] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 10/17/2014] [Indexed: 05/04/2023]
Abstract
Despite its economic relevance, little is known about salt tolerance mechanisms in pepper plants. To address this question, we compared differences in responses to NaCl in two Capsicum chinense varieties: Rex (tolerant) and Chichen-Itza (sensitive). Under salt stress (150 mM NaCl over 7 days) roots of Rex variety accumulated 50 times more compatible solutes such as proline compared to Chichen-Itza. Mineral analysis indicated that Na(+) is restricted to roots by preventing its transport to leaves. Fluorescence analysis suggested an efficient Na(+) compartmentalization in vacuole-like structures and in small intracellular compartments in roots of Rex variety. At the same time, Na(+) in Chichen-Itza plants was compartmentalized in the apoplast, suggesting substantial Na(+) extrusion. Rex variety was found to retain more K(+) in its roots under salt stress according to a mineral analysis and microelectrode ion flux estimation (MIFE). Vanadate-sensitive H(+) efflux was higher in Chichen-Itza variety plants, suggesting a higher activity of the plasma membrane H(+)-ATPase, which fuels the extrusion of Na(+), and, possibly, also the re-uptake of K(+). Our results suggest a combination of stress tolerance mechanisms, in order to alleviate the salt-induced injury. Furthermore, Na(+) extrusion to apoplast does not appear to be an efficient strategy for salt tolerance in pepper plants.
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Affiliation(s)
- Emanuel Bojórquez-Quintal
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de YucatánYucatán, México
| | - Ana Velarde-Buendía
- Centro Universitario de Investigaciones Biomédicas, Universidad de ColimaColima, México
| | - Ángela Ku-González
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de YucatánYucatán, México
| | - Mildred Carillo-Pech
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de YucatánYucatán, México
| | - Daniela Ortega-Camacho
- Unidad de Ciencias del Agua, Centro de Investigación Científica de YucatánYucatán, México
| | - Ileana Echevarría-Machado
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de YucatánYucatán, México
| | - Igor Pottosin
- Centro Universitario de Investigaciones Biomédicas, Universidad de ColimaColima, México
| | - Manuel Martínez-Estévez
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de YucatánYucatán, México
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Augé RM, Toler HD, Saxton AM. Arbuscular mycorrhizal symbiosis and osmotic adjustment in response to NaCl stress: a meta-analysis. FRONTIERS IN PLANT SCIENCE 2014; 5:562. [PMID: 25368626 PMCID: PMC4201091 DOI: 10.3389/fpls.2014.00562] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 09/30/2014] [Indexed: 05/03/2023]
Abstract
Arbuscular mycorrhizal (AM) symbiosis can enhance plant resistance to NaCl stress in several ways. Two fundamental roles involve osmotic and ionic adjustment. By stimulating accumulation of solutes, the symbiosis can help plants sustain optimal water balance and diminish Na(+) toxicity. The size of the AM effect on osmolytes has varied widely and is unpredictable. We conducted a meta-analysis to determine the size of the AM effect on 22 plant solute characteristics after exposure to NaCl and to examine how experimental conditions have influenced the AM effect. Viewed across studies, AM symbioses have had marked effects on plant K(+), increasing root and shoot K(+) concentrations by an average of 47 and 42%, respectively, and root and shoot K(+)/Na(+) ratios by 47 and 58%, respectively. Among organic solutes, soluble carbohydrates have been most impacted, with AM-induced increases of 28 and 19% in shoots and roots. The symbiosis has had no consistent effect on several characteristics, including root glycine betaine concentration, root or shoot Cl(-) concentrations, leaf Ψπ, or shoot proline or polyamine concentrations. The AM effect has been very small for shoot Ca(++) concentration and root concentrations of Na(+), Mg(++) and proline. Interpretations about AM-conferred benefits regarding these compounds may be best gauged within the context of the individual studies. Shoot and root K(+)/Na(+) ratios and root proline concentration showed significant between-study heterogeneity, and we examined nine moderator variables to explore what might explain the differences in mycorrhizal effects on these parameters. Moderators with significant impacts included AM taxa, host type, presence or absence of AM growth promotion, stress severity, and whether NaCl constituted part or all of the experimental saline stress treatment. Meta-regression of shoot K(+)/Na(+) ratio showed a positive response to root colonization, and root K(+)/Na(+) ratio a negative response to time of exposure to NaCl.
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Affiliation(s)
- Robert M. Augé
- Department of Plant Sciences, University of TennesseeKnoxville, TN, USA
| | - Heather D. Toler
- Department of Plant Sciences, University of TennesseeKnoxville, TN, USA
| | - Arnold M. Saxton
- Department of Animal Sciences, University of TennesseeKnoxville, TN, USA
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ASHRAF M, WAHEED A. Organic solute status and water relations of some salt-tolerant and salt-sensitive accessions of lentil(Lens culinaris). ACTA ACUST UNITED AC 2013. [DOI: 10.1111/j.1438-8677.1993.tb00678.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Boo HO, Shin JH, Kim YS, Park HJ, Kim HH, Kwon SJ, Woo SH. Comparative Antioxidant Enzyme Activity of Diploid and Tetraploid Platycodon grandiflorum by Different Drying Methods. ACTA ACUST UNITED AC 2013. [DOI: 10.7732/kjpr.2013.26.3.389] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Boo HO, Shin JH, Shin JS, Choung ES, Bang MA, Choi KM, Song WS. Assessment on Antioxidant Potential and Enzyme Activity of Some Economic Resource Plants. ACTA ACUST UNITED AC 2012. [DOI: 10.7732/kjpr.2012.25.3.349] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Heuer B. Role of Proline in Plant Response to Drought and Salinity. HANDBOOK OF PLANT AND CROP STRESS,THIRD EDITION 2010. [DOI: 10.1201/b10329-12] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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20
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Ibraheem O, Botha CEJ, Bradley G. In silico analysis of cis-acting regulatory elements in 5' regulatory regions of sucrose transporter gene families in rice (Oryza sativa Japonica) and Arabidopsis thaliana. Comput Biol Chem 2010; 34:268-83. [PMID: 21036669 DOI: 10.1016/j.compbiolchem.2010.09.003] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2010] [Revised: 09/14/2010] [Accepted: 09/27/2010] [Indexed: 11/18/2022]
Abstract
The regulation of gene expression involves a multifarious regulatory system. Each gene contains a unique combination of cis-acting regulatory sequence elements in the 5' regulatory region that determines its temporal and spatial expression. Cis-acting regulatory elements are essential transcriptional gene regulatory units; they control many biological processes and stress responses. Thus a full understanding of the transcriptional gene regulation system will depend on successful functional analyses of cis-acting elements. Cis-acting regulatory elements present within the 5' regulatory region of the sucrose transporter gene families in rice (Oryza sativa Japonica cultivar-group) and Arabidopsis thaliana, were identified using a bioinformatics approach. The possible cis-acting regulatory elements were predicted by scanning 1.5kbp of 5' regulatory regions of the sucrose transporter genes translational start sites, using Plant CARE, PLACE and Genomatix Matinspector professional databases. Several cis-acting regulatory elements that are associated with plant development, plant hormonal regulation and stress response were identified, and were present in varying frequencies within the 1.5kbp of 5' regulatory region, among which are; A-box, RY, CAT, Pyrimidine-box, Sucrose-box, ABRE, ARF, ERE, GARE, Me-JA, ARE, DRE, GA-motif, GATA, GT-1, MYC, MYB, W-box, and I-box. This result reveals the probable cis-acting regulatory elements that possibly are involved in the expression and regulation of sucrose transporter gene families in rice and Arabidopsis thaliana during cellular development or environmental stress conditions.
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Affiliation(s)
- Omodele Ibraheem
- Plant Stress Response Group, Department of Biochemistry & Microbiology, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa
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21
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Sharma PK, Sharma SK, Choi IY. Individual and combined effects of waterlogging and alkalinity on yield of wheat (Triticum aestivum L.) imposed at three critical stages. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2010; 16:317-20. [PMID: 23572981 PMCID: PMC3550672 DOI: 10.1007/s12298-010-0027-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Response of wheat genotype HD 2329 to individual and combined effects of alkalinity and waterlogging (WL) at tillering, panicle emergence and anthesis stage was studied. Both stresses increased Na accumulation and reduced K uptake which leads to higher Na(+)/K(+) ratio in the leaves. Yield was decreased under all the stress treatments and highly correlated with Na(+)/K(+) ratio at all the three growth stages (r = -0.83, -0.82 and -0.73, respectively) with maximum reduction under pH 9.4 + WL. Increase in pH from 7.2 to 9.1 and 9.4 delayed complete panicle emergence (4 and 8 days) and flowering (1 and 2 days) at both, tillering and panicle emergence stages. Dual stress further increased days, required for complete panicle emergence and flowering. These results suggested that high Na(+)/K(+) ratio of plant tissue may be the critical factor for growth and development of wheat under WL, alkalinity and dual stress. Due to this delay in flowering and panicle emergence, times required for maturity of grains shorten, resulted in lower grain yield.
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Affiliation(s)
- Praveen Kumar Sharma
- />Jeollabuk-do Agricultural Research and Extension Services, Iksan, 570-704 South Korea
| | - S. K. Sharma
- />Central Soil Salinity Research Institute, Karnal, India
| | - I. Y. Choi
- />Jeollabuk-do Agricultural Research and Extension Services, Iksan, 570-704 South Korea
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22
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Xu X, Xu H, Wang Y, Wang X, Qiu Y, Xu B. The effect of salt stress on the chlorophyll level of the main sand-binding plants in the shelterbelt along the Tarim Desert Highway. Sci Bull (Beijing) 2009. [DOI: 10.1007/s11434-008-6012-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Trovato M, Mattioli R, Costantino P. Multiple roles of proline in plant stress tolerance and development. ACTA ACUST UNITED AC 2008. [DOI: 10.1007/s12210-008-0022-8] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Abstract
Soybean is an important cash crop and its productivity is significantly hampered by salt stress. High salt imposes negative impacts on growth, nodulation, agronomy traits, seed quality and quantity, and thus reduces the yield of soybean. To cope with salt stress, soybean has developed several tolerance mechanisms, including: (i) maintenance of ion homeostasis; (ii) adjustment in response to osmotic stress; (iii) restoration of osmotic balance; and (iv) other metabolic and structural adaptations. The regulatory network for abiotic stress responses in higher plants has been studied extensively in model plants such as Arabidopsis thaliana. Some homologous components involved in salt stress responses have been identified in soybean. In this review, we tried to integrate the relevant works on soybean and proposes a working model to describe its salt stress responses at the molecular level.
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Affiliation(s)
- Tsui-Hung Phang
- Department of Biology, Chinese University of Hong Kong, Shatin, Hong Kong, China
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25
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Hossain Z, Mandal AKA, Datta SK, Biswas AK. Isolation of a NaCl-tolerant mutant of Chrysanthemum morifolium by gamma radiation: in vitro mutagenesis and selection by salt stress. FUNCTIONAL PLANT BIOLOGY : FPB 2006; 33:91-101. [PMID: 32689217 DOI: 10.1071/fp05149] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2005] [Accepted: 09/16/2005] [Indexed: 06/11/2023]
Abstract
A stable NaCl-tolerant mutant (R1) of Chrysanthemum morifolium Ramat has been developed by in vitro mutagenesis with gamma radiation (5 gray; Gy). Salt tolerance was evaluated by the capacity of the plant to maintain both flower quality and yield under NaCl stress. Enhanced salt tolerance of the R1 mutant was attributed to increased activities of reactive oxygen species (ROS)-scavenging enzymes, namely superoxide dismutase (SOD), monodehydroascorbate reductase (MDAR), dehydroascorbate reductase (DHAR) and glutathione reductase (GR), and to reduced membrane damage, higher relative water content (RWC), chlorophyll and carotenoids contents. RAPD analysis revealed two polymorphic bands (956 and 1093 bp) for the R1 mutant that might be considered as specific RAPD markers associated with salt tolerance. Better performance of the R1 progeny under identical salinity stress conditions, even in the second year, confirmed the genetic stability of the induced salt tolerance character. The R1 mutant developed by gamma ray treatment can be considered a salt-tolerant mutant showing all the positive characteristics of tolerance to NaCl stress.
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Affiliation(s)
- Zahed Hossain
- Botanic Garden and Floriculture, National Botanical Research Institute, Lucknow 226001, Uttar Pradesh, India
| | - Abul Kalam Azad Mandal
- Botanic Garden and Floriculture, National Botanical Research Institute, Lucknow 226001, Uttar Pradesh, India
| | - Subodh Kumar Datta
- Botanic Garden and Floriculture, National Botanical Research Institute, Lucknow 226001, Uttar Pradesh, India
| | - Amal K Biswas
- Cytogenetics and Plant Breeding Laboratory, Botany Department, University of Kalyani, Kalyani 741235, West Bengal, India
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Hmida-Sayari A, Gargouri-Bouzid R, Bidani A, Jaoua L, Savouré A, Jaoua S. Overexpression of Δ1-pyrroline-5-carboxylate synthetase increases proline production and confers salt tolerance in transgenic potato plants. PLANT SCIENCE 2005. [PMID: 0 DOI: 10.1016/j.plantsci.2005.05.025] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
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Borsani O, Cuartero J, Valpuesta V, Botella MA. Tomato tos1 mutation identifies a gene essential for osmotic tolerance and abscisic acid sensitivity. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2002; 32:905-914. [PMID: 12492833 DOI: 10.1046/j.1365-313x.2002.01475.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Osmotic stress severely limits plant growth and agricultural productivity. We have used mutagenesis to identify plant genes that are required for osmotic stress tolerance in tomato. As a result, we have isolated a novel mutant in tomato (tos1) caused by a single recessive nuclear mutation that is hypersensitive to general osmotic stress. Growth measurements demonstrated that the tos1 mutant is less sensitive to intracellular abscisic acid (ABA) and this decreased ABA sensitivity of tos1 is a basic cellular trait expressed by the mutant at all developmental stages analysed. It is not caused by a deficiency in the synthesis of ABA because the tos1 seedlings accumulated more ABA than the wild type (WT) after osmotic stress. In contrast, the tss2 tomato mutant, which is also hypersensitive to osmotic stress, is hypersensitive to exogenous ABA. Comparative analysis of tos1 and tss2 indicates that appropriate ABA perception and signalling is essential for osmotic tolerance.
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Affiliation(s)
- Omar Borsani
- Departamento de Biología Molecular y Bioquímica, Universidad de Málaga, 29071 Málaga, Spain
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28
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Heuer B. Osmoregulatory Role of Proline in Plants Exposed to Environmental Stresses. BOOKS IN SOILS, PLANTS, AND THE ENVIRONMENT 1999. [DOI: 10.1201/9780824746728.ch32] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Zhu JK, Liu J, Xiong L. Genetic analysis of salt tolerance in arabidopsis. Evidence for a critical role of potassium nutrition. THE PLANT CELL 1998. [PMID: 9668136 DOI: 10.2307/3870720] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
A large genetic screen for sos (for salt overly sensitive) mutants was performed in an attempt to isolate mutations in any gene with an sos phenotype. Our search yielded 28 new alleles of sos1, nine mutant alleles of a newly identified locus, SOS2, and one allele of a third salt tolerance locus, SOS3. The sos2 mutations, which are recessive, were mapped to the lower arm of chromosome V, approximately 2.3 centimorgans away from the marker PHYC. Growth measurements demonstrated that sos2 mutants are specifically hypersensitive to inhibition by Na+ or Li+ and not hypersensitive to general osmotic stresses. Interestingly, the SOS2 locus is also necessary for K+ nutrition because sos2 mutants were unable to grow on a culture medium with a low level of K+. The expression of several salt-inducible genes was superinduced in sos2 plants. The salt tolerance of sos1, sos2, and sos3 mutants correlated with their K+ tissue content but not their Na+ tissue content. Double mutant analysis indicated that the SOS genes function in the same pathway. Based on these results, a genetic model for salt tolerance mechanisms in Arabidopsis is presented in which SOS1, SOS2, and SOS3 are postulated to encode regulatory components controlling plant K+ nutrition that in turn is essential for salt tolerance.
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Affiliation(s)
- J K Zhu
- Department of Plant Sciences, University of Arizona, Tucson, Arizona 85721, USA.
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30
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Zhu JK, Liu J, Xiong L. Genetic analysis of salt tolerance in arabidopsis. Evidence for a critical role of potassium nutrition. THE PLANT CELL 1998; 10:1181-91. [PMID: 9668136 PMCID: PMC144057 DOI: 10.1105/tpc.10.7.1181] [Citation(s) in RCA: 200] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
A large genetic screen for sos (for salt overly sensitive) mutants was performed in an attempt to isolate mutations in any gene with an sos phenotype. Our search yielded 28 new alleles of sos1, nine mutant alleles of a newly identified locus, SOS2, and one allele of a third salt tolerance locus, SOS3. The sos2 mutations, which are recessive, were mapped to the lower arm of chromosome V, approximately 2.3 centimorgans away from the marker PHYC. Growth measurements demonstrated that sos2 mutants are specifically hypersensitive to inhibition by Na+ or Li+ and not hypersensitive to general osmotic stresses. Interestingly, the SOS2 locus is also necessary for K+ nutrition because sos2 mutants were unable to grow on a culture medium with a low level of K+. The expression of several salt-inducible genes was superinduced in sos2 plants. The salt tolerance of sos1, sos2, and sos3 mutants correlated with their K+ tissue content but not their Na+ tissue content. Double mutant analysis indicated that the SOS genes function in the same pathway. Based on these results, a genetic model for salt tolerance mechanisms in Arabidopsis is presented in which SOS1, SOS2, and SOS3 are postulated to encode regulatory components controlling plant K+ nutrition that in turn is essential for salt tolerance.
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Affiliation(s)
- J K Zhu
- Department of Plant Sciences, University of Arizona, Tucson, Arizona 85721, USA.
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31
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Liu J, Zhu JK. Proline accumulation and salt-stress-induced gene expression in a salt-hypersensitive mutant of Arabidopsis. PLANT PHYSIOLOGY 1997; 114:591-6. [PMID: 9193091 PMCID: PMC158341 DOI: 10.1104/pp.114.2.591] [Citation(s) in RCA: 177] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The sos1 mutant of Arabidopsis thaliana is more than 20 times more sensitive to NaCl stress than wild type Arabidopsis. Because proline (Pro) is generally thought to have an important role in plant salt tolerance, the sos1 mutant and the wild type were compared with respect to their capacity to accumulate Pro under NaCl stress, and sos1 mutant plants accumulated more Pro than wild-type. The P5CS gene, which catalyzes the rate-limiting step in Pro biosynthesis, is induced by salt stress to a higher level in sos1 than in the wild type. Although a defective high-affinity K uptake system in sos1 causes K deficiency and inhibits growth in NaCl-treated plants, this decrease is not a sufficient signal for Pro accumulation and P5CS gene expression. Not all salt-stress-induced genes have a higher level of expression in sos1. The expression levels of AtPLC and RD29A, which encode a phospholipase C homolog and a putative protective protein, respectively, are the same in sos1 as in the wild type. However, the expression of AtMYB, which encodes a putative transcriptional factor, is induced to a much higher level by salt stress in sos1. Thus, the SOS1 gene product serves as a negative regulator for the expression of P5CS and AtMYB, but has no effect on AtPLC and RD29A expression.
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Affiliation(s)
- J Liu
- Department of Plant Sciences, University of Arizona, Tucson 85721, USA
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32
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Belkhodja M. Action de la salinité sur les teneurs en proline des organes adultes de trois lignées de fève (Vicia fabaL.) au cours de leur développement. ACTA ACUST UNITED AC 1996. [DOI: 10.1080/12538078.1996.10515315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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33
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Claes B, Dekeyser R, Villarroel R, Van den Bulcke M, Bauw G, Van Montagu M, Caplan A. Characterization of a rice gene showing organ-specific expression in response to salt stress and drought. THE PLANT CELL 1990; 2:19-27. [PMID: 2152105 PMCID: PMC159860 DOI: 10.1105/tpc.2.1.19] [Citation(s) in RCA: 142] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Protein changes induced by salinity stress were investigated in the roots of the salt-sensitive rice cultivar Taichung native 1. We found eight proteins to be induced and obtained partial sequences of one with a molecular mass of 15 kilodaltons and an isoelectric point of 5.5. Using an oligonucleotide probe based on this information, a cDNA clone, salT, was selected and found to contain an open reading frame coding for a protein of 145 amino acid residues. salT mRNA accumulates very rapidly in sheaths and roots from mature plants and seedlings upon treatment with Murashige and Skoog salts (1%), air drying, abscisic acid (20 microM), polyethylene glycol (5%), sodium chloride (1%), and potassium chloride (1%). Generally, no induction was seen in the leaf lamina even when the stress should affect all parts of the plant uniformly. The organ-specific response of salT is correlatable with the pattern of Na+ accumulation during salt stress.
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Affiliation(s)
- B Claes
- Laboratorium voor Genetica, Rijksuniversiteit Gent, Belgium
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Rodriguez MM, Heyser JW. Growth inhibition by exogenous proline and its metabolism in saltgrass (Distichlis spicata) suspension cultures. PLANT CELL REPORTS 1988; 7:305-308. [PMID: 24241870 DOI: 10.1007/bf00269924] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/1987] [Revised: 05/05/1988] [Indexed: 06/02/2023]
Abstract
The growth of Distichlis spicata suspension cultures in LS medium without NaCl was inhibited 54% by 2 mM proline. In medium containing 260 mM NaCl, 10 mM proline inhibited growth by only 22%. The uptake and metabolism of 10 mM L-[1-(13)C] proline was followed by (13)C NMR and ninhydrin analyses of suspensions cultured in the presence of 0 or 260 mM NaCl. Uptake of 85 to 92% of the exogenous proline occurred within 72 h in all media. In 10 mM proline and no NaCl, cellular proline reached a maximm of 51.5 μmoles/g FW compared to 1.9 μmoles/g FW in suspensions not grown on proline. In medium containing 260 mM NaCl and proline, cellular proline reached 59-65 μmoles/g FW compared to 30-40 μmoles/g FW in controls grown without proline. The (13)C-label in the proline-C1 was either retained in proline or disappeared, presumably released as carbon dioxide, by catabolism through the TCA cycle. Since no metabolite of (13)C-proline was detected by NMR, proline was considered to be the molecule which inhibited the suspension culture growth.
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Affiliation(s)
- M M Rodriguez
- Genetics Group (LS-3), Mail Stop M886, Life Science Division, Los Alamos National Laboratory, 87545, Los Alamos, NM, USA
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