101
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The response of three Fagus sylvatica L. provenances to water availability at different soil depths. Ecol Res 2015. [DOI: 10.1007/s11284-015-1287-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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102
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Zhang Y, Zhang H, Zou ZR, Liu Y, Hu XH. Deciphering the protective role of spermidine against saline-alkaline stress at physiological and proteomic levels in tomato. PHYTOCHEMISTRY 2015; 110:13-21. [PMID: 25579998 DOI: 10.1016/j.phytochem.2014.12.021] [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: 01/10/2014] [Revised: 11/23/2014] [Accepted: 12/16/2014] [Indexed: 05/20/2023]
Abstract
In this research, the protective effect of spermidine (Spd) in mitigating saline-alkaline stress in tomato (Solanum lycopersicum L.) at physiological and proteomic levels were examined. The results showed that saline-alkaline stress induced accumulation of H2O2 and O2(-*), and increased the activities of antioxidase (SOD, CAT, and POD). Spermidine efficiently alleviated the inhibitory role of saline-alkaline on plant growth and inhibited saline-alkaline stress-induced H2O2 and O2(-*) accumulation. Proteomics investigations of the leaves of tomato seedlings, responding to a 75 mM saline-alkaline solution and 0.25 mM Spd, were performed. Maps of the proteome of leaf extracts were obtained by two-dimensional gel electrophoresis. An average of 49, 47 and 34 spots, which appeared repeatedly and that significantly altered the relative amounts of polypeptides by more than twofold, were detected for seedlings treated with saline-alkaline solution (S) compared to normal solution (CK), saline-alkaline plus spermidine (MS) compared to CK, or S versus MS, respectively. Thirty-nine of these proteins were identified by matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry and were classified into five functional categories, including energy and metabolism, signal transduction, amino acid metabolism, protein metabolism, and stress-defense response. Proteomics analysis coupled with bioinformatics indicated that Spd treatment helps tomato seedlings combat saline-alkaline stress by modulating the defense mechanism of plants and activating cellular detoxification, which protect plants from oxidative damage induced by saline-alkaline stress.
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Affiliation(s)
- Yi Zhang
- College of Horticulture, Northwest Agricultural & Forestry University, Yangling, Shaanxi 712100, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture, Northwest Agricultural & Forestry University, Yangling, Shaanxi 712100, China; College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Hao Zhang
- College of Horticulture, Northwest Agricultural & Forestry University, Yangling, Shaanxi 712100, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture, Northwest Agricultural & Forestry University, Yangling, Shaanxi 712100, China
| | - Zhi-Rong Zou
- College of Horticulture, Northwest Agricultural & Forestry University, Yangling, Shaanxi 712100, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture, Northwest Agricultural & Forestry University, Yangling, Shaanxi 712100, China
| | - Yi Liu
- College of Horticulture, Northwest Agricultural & Forestry University, Yangling, Shaanxi 712100, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture, Northwest Agricultural & Forestry University, Yangling, Shaanxi 712100, China
| | - Xiao-Hui Hu
- College of Horticulture, Northwest Agricultural & Forestry University, Yangling, Shaanxi 712100, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture, Northwest Agricultural & Forestry University, Yangling, Shaanxi 712100, China.
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103
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Furuki T, Sakurai M. Group 3 LEA protein model peptides protect liposomes during desiccation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:2757-66. [DOI: 10.1016/j.bbamem.2014.07.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 06/18/2014] [Accepted: 07/06/2014] [Indexed: 10/25/2022]
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104
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Ngara R, Ndimba BK. Understanding the complex nature of salinity and drought-stress response in cereals using proteomics technologies. Proteomics 2014; 14:611-21. [PMID: 24339029 DOI: 10.1002/pmic.201300351] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 11/30/2013] [Accepted: 12/01/2013] [Indexed: 11/11/2022]
Abstract
Worldwide, crop productivity is drastically reduced by drought and salinity stresses. In order to develop food crops with increased productivity in marginal areas, it is important to first understand the nature of plant stress response mechanisms. In the past decade, proteomics tools have been extensively used in the study of plants' proteome responses under experimental conditions mimicking drought and salinity stresses. A lot of proteomic data have been generated using different experimental designs. However, the precise roles of these proteins in stress tolerance are yet to be elucidated. This review summarises the applications of proteomics in understanding the complex nature of drought and salinity stress effects on plants, particularly cereals and also highlights the usefulness of sorghum as the next logical model crop for use in understanding drought and salinity tolerance in cereals. With the vast amount of proteomic data that have been generated to date, a call for integrated efforts across the agricultural, biotechnology, and molecular biology sectors is also highlighted in an effort to translate proteomics data into increased food productivity for the world's growing population.
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Affiliation(s)
- Rudo Ngara
- Department of Plant Sciences, University of the Free State, Qwaqwa Campus, Phuthaditjhaba, South Africa
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105
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Zhou L, Wang NN, Kong L, Gong SY, Li Y, Li XB. Molecular characterization of 26 cotton WRKY genes that are expressed differentially in tissues and are induced in seedlings under high salinity and osmotic stress. PLANT CELL, TISSUE AND ORGAN CULTURE (PCTOC) 2014. [PMID: 0 DOI: 10.1007/s11240-014-0520-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
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106
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Wang J, Wang Q, Yang Y, Liu X, Gu J, Li W, Ma S, Lu Y. De novo assembly and characterization of stress transcriptome and regulatory networks under temperature, salt and hormone stresses in Lilium lancifolium. Mol Biol Rep 2014; 41:8231-45. [PMID: 25200436 DOI: 10.1007/s11033-014-3725-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 09/03/2014] [Indexed: 10/24/2022]
Abstract
Plants have continually confrontation with different abiotic stresses, including salt, low temperature, drought or hormone stress. The plants acclimate to the environmental stresses relating with the falls of the molecular mesh including the stress signal receiver, signal transcriptional regulation and the expression of functional and structure genes. Using the RNA-seq, we carried out a transcriptional analysis under cold treatment for investigating a profound comprehension of the signal network and molecular metabolisms reaction included in abiotic stress reaction for Lilium lancifolium. Our study identified 18,722 unigenes had demonstrated the resemblance to the known exact proteins in the Swiss-Prot protein database and classified them by Gene ontology into three primary kinds: cellular component, biological process, and molecular function, and then 15,898 unigenes aligned to existing sequences in the KEGG databases. Based on the transcriptome results of cold stress, more stress-related genes were identified and analyzed of their expressions in other abiotic stress treatments as 37 °C, ABA, JA and Na. Meanwhile, bioinformatics qRT-PCR analyses of stress genes as LlDREB1, LlAP2, LlNAC1, LlHOT, LlR2R3-MYB and LlCDPK revealed that novel candidate genes encoding ethylene responsive transporters and serine/threonine receptor-like kinases, which contributed to speculate the signal regulation pathway during the abiotic stresses; engineering genes could also boost the tolerance to stress, as protected and maintained the function and structure of cellular components. Our research conjectured the abiotic stress signal transduction pathway and identified the expected key ingredients regulating the stress tolerance in Lilium lancifolium, which would enable the in-depth molecular exploration of stress-tolerance mechanisms in lily.
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Affiliation(s)
- Jingmao Wang
- College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China,
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107
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A Novel Zinc-Finger HIT Protein with an Additional PAPA-1-like Region from Suaeda liaotungensis K. Enhanced Transgenic Arabidopsis Drought and Salt Stresses Tolerance. Mol Biotechnol 2014; 56:1089-99. [DOI: 10.1007/s12033-014-9789-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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108
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Du H, Huang M, Zhang Z, Cheng S. Genome-wide analysis of the AP2/ERF gene family in maize waterlogging stress response. EUPHYTICA 2014; 198:115-126. [PMID: 0 DOI: 10.1007/s10681-014-1088-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Accepted: 02/20/2014] [Indexed: 05/26/2023]
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109
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Contreras-Cornejo HA, Macías-Rodríguez L, Alfaro-Cuevas R, López-Bucio J. Trichoderma spp. Improve growth of Arabidopsis seedlings under salt stress through enhanced root development, osmolite production, and Na⁺ elimination through root exudates. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2014; 27:503-14. [PMID: 24502519 DOI: 10.1094/mpmi-09-13-0265-r] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Salt stress is an important constraint to world agriculture. Here, we report on the potential of Trichoderma virens and T. atroviride to induce tolerance to salt in Arabidopsis seedlings. We first characterized the effect of several salt concentrations on shoot biomass production and root architecture of Arabidopsis seedlings. We found that salt repressed plant growth and root development in a dose-dependent manner by blocking auxin signaling. Analysis of the wild type and eir1, aux1-7, arf7arf19, and tir1abf2abf19 auxin-related mutants revealed a key role for indole-3-acetic acid (IAA) signaling in mediating salt tolerance. We also found that T. virens (Tv29.8) and T. atroviride (IMI 206040) promoted plant growth in both normal and saline conditions, which was related to the induction of lateral roots and root hairs through auxin signaling. Arabidopsis seedlings grown under saline conditions inoculated with Trichoderma spp. showed increased levels of abscissic acid, L-proline, and ascorbic acid, and enhanced elimination of Na⁺ through root exudates. Our data show the critical role of auxin signaling and root architecture to salt tolerance in Arabidopsis and suggest that these fungi may enhance the plant IAA level as well as the antioxidant and osmoprotective status of plants under salt stress.
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110
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Li XL, Yang X, Hu YX, Yu XD, Li QL. A novel NAC transcription factor from Suaeda liaotungensis K. enhanced transgenic Arabidopsis drought, salt, and cold stress tolerance. PLANT CELL REPORTS 2014; 33:767-78. [PMID: 24682461 DOI: 10.1007/s00299-014-1602-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 02/28/2014] [Accepted: 03/12/2014] [Indexed: 05/09/2023]
Abstract
Sl NAC1 functions as a stress-responsive NAC protein involved in the abscisic acid-dependent signaling pathway and enhances transgenic Arabidopsis drought, salt, and cold stress tolerance. NAC (NAM, ATAF1, 2, CUC2) transcription factors constitute the largest families of plant-specific transcription factors, known to be involved in various growth or developmental processes and in regulation of response to environmental stresses. However, only little information regarding stress-related NAC genes is available in Suaeda liaotungensis K. In this study, we cloned a full-length NAC gene (1,011 bp) named SlNAC1 using polymerase chain reaction from Suaeda liaotungensis K. and investigated its function by overexpression in transgenic Arabidopsis. SlNAC1 contains an NAC-conserved domain. Its expression in S. liaotungensis was induced by drought, high-salt, and cold (4 °C) stresses and by abscisic acid. Subcellular localization experiments in onion epidermal cells indicated that SlNAC1 is localized in the nucleus. Yeast one-hybrid assays showed that SlNAC1 functions as a transcriptional activator. SlNAC1 transgenic Arabidopsis displayed a higher survival ratio and lower rate of water loss under drought stress; a higher germination ratio, higher survival ratio, and lower root inhibition rate under salt stress; a higher survival ratio under cold stress; and a lower germination ratio and root inhibition rate under abscisic acid treatment, compared with wild-type Arabidopsis. These results suggested that SlNAC1 functions as a stress-responsive NAC protein involved in the abscisic acid-dependent signaling pathway and may have potential applications in transgenic breeding to enhance crops' abiotic stress tolerances.
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Affiliation(s)
- Xiao-lan Li
- College of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology in Liaoning Province, 1 South Liushu Street, Ganjingzi District, Dalian, 116081, Liaoning, China,
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111
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Pembleton KG, Sathish P. Giving drought the cold shoulder: a relationship between drought tolerance and fall dormancy in an agriculturally important crop. AOB PLANTS 2014; 6:plu012. [PMID: 24790133 PMCID: PMC4038438 DOI: 10.1093/aobpla/plu012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 03/13/2014] [Indexed: 05/04/2023]
Abstract
The growth of fall dormant/freezing tolerant plants often surpasses the growth of non-fall dormant/non-freezing tolerant types of the same species under water-limited conditions, while under irrigated conditions non-fall dormant types exhibit superior yield performance. To investigate the mechanism behind this phenomenon, we exposed seven diverse alfalfa (Medicago sativa) cultivars to water-limited and fully watered conditions and measured their shoot growth, shoot water potential and gas exchange parameters and the relative abundance of taproot RNA transcripts associated with chilling stress/freezing tolerance. Fall dormant cultivars had greater shoot growth relative to the fully watered controls under a mild water deficit (a cumulative water deficit of 625 mL pot(-1)) and did not close their stomata until lower shoot water potentials compared with the more non-fall dormant cultivars. Several gene transcripts previously associated with freezing tolerance increased in abundance when plants were exposed to a mild water deficit. Two transcripts, corF (encodes galactinol synthase) and cas18 (encodes a dehydrin-like protein), increased in abundance in fall dormant cultivars only. Once water deficit stress became severe (a cumulative water deficit of 2530 mL pot(-1)), the difference between fall dormancy groups disappeared with the exception of the expression of a type 1 sucrose synthase gene, which decreased in fall dormant cultivars. The specific adaptation of fall dormant cultivars to mild water deficit conditions and the increase in abundance of specific genes typically associated with freezing tolerance in these cultivars is further evidence of a link between freezing tolerance/fall dormancy and adaption to drought conditions in this species.
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Affiliation(s)
- Keith G. Pembleton
- Tasmanian Institute of Agriculture, University of Tasmania, PO Box 3523, Burnie, TAS 7320, Australia
| | - Puthigae Sathish
- Pastoral Genomics, c/o ViaLactia (NZ) Ltd, PO Box 109185, Newmarket 1149, New Zealand
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112
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Liu Y, Liu M, Li X, Cao B, Ma X. Identification of differentially expressed genes in leaf of Reaumuria soongorica under PEG-induced drought stress by digital gene expression profiling. PLoS One 2014; 9:e94277. [PMID: 24736242 PMCID: PMC3988058 DOI: 10.1371/journal.pone.0094277] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 03/14/2014] [Indexed: 12/17/2022] Open
Abstract
Reaumuria soongorica (Pall.) Maxim., a resurrection semi-shrub, is a typical constructive and dominant species in desert ecosystems in northwestern China. However, the gene expression characteristics of R. soongorica under drought stress have not been elucidated. Digital gene expression analysis was performed using Illumina technique to investigate differentially expressed genes (DEGs) between control and PEG-treated samples of R. soongorica. A total of 212,338 and 211,052 distinct tags were detected in the control and PEG-treated libraries, respectively. A total of 1,325 genes were identified as DEGs, 379 (28.6%) of which were up-regulated and 946 (71.4%) were down-regulated in response to drought stress. Functional annotation analysis identified numerous drought-inducible genes with various functions in response to drought stress. A number of regulatory proteins, functional proteins, and proteins induced by other stress factors in R. soongorica were identified. Alteration in the regulatory proteins (transcription factors and protein kinase) may be involved in signal transduction. Functional proteins, including flavonoid biosynthetic proteins, late embryogenesis abundant (LEA) proteins, small heat shock proteins (sHSP), and aquaporin and proline transporter may play protective roles in response to drought stress. Flavonoids, LEA proteins and sHSP function as reactive oxygen species scavenger or molecular chaperone. Aquaporin and proline transporters regulate the distribution of water and proline throughout the whole plant. The tolerance ability of R. soongorica may be gained through effective signal transduction and enhanced protection of functional proteins to reestablish cellular homeostasis. DEGs obtained in this study may provide useful insights to help further understand the drought-tolerant mechanism of R. soongorica.
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Affiliation(s)
- Yubing Liu
- Shapotou Desert Research & Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P. R. China
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P. R. China
- * E-mail:
| | - Meiling Liu
- Shapotou Desert Research & Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P. R. China
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P. R. China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xinrong Li
- Shapotou Desert Research & Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P. R. China
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P. R. China
| | - Bo Cao
- Shapotou Desert Research & Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P. R. China
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P. R. China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaofei Ma
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P. R. China
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113
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Kourmpetli S, Lee K, Hemsley R, Rossignol P, Papageorgiou T, Drea S. Bidirectional promoters in seed development and related hormone/stress responses. BMC PLANT BIOLOGY 2013; 13:187. [PMID: 24261334 PMCID: PMC4222868 DOI: 10.1186/1471-2229-13-187] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 11/15/2013] [Indexed: 05/03/2023]
Abstract
BACKGROUND Bidirectional promoters are common in genomes but under-studied experimentally, particularly in plants. We describe a targeted identification and selection of a subset of putative bidirectional promoters to identify genes involved in seed development and to investigate possible coordinated responses of gene pairs to conditions important in seed maturation such as desiccation and ABA-regulation. RESULTS We combined a search for 100-600 bp intergenic regions in the Arabidopsis genome with a cis-element based selection for those containing multiple copies of the G-box motif, CACGTG. One of the putative bidirectional promoters identified also contained a CE3 coupling element 5 bp downstream of one G-box and is identical to that characterized previously in the HVA1 promoter of barley. CE3 elements are significantly under-represented and under-studied in Arabidopsis. We further characterized the pair of genes associated with this promoter and uncovered roles for two small, previously uncharacterized, plant-specific proteins in Arabidopsis seed development and stress responses. CONCLUSIONS Using bioinformatics we identified putative bidirectional promoters involved in seed development and analysed expression patterns for a pair of plant-specific genes in various tissues and in response to hormones/stress. We also present preliminary functional analysis of these genes that is suggestive of roles in seed development.
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Affiliation(s)
- Sofia Kourmpetli
- Department of Biology, University of Leicester, University Road, Leicester LE1 7RH, UK
| | - Kate Lee
- Bioinformatics and Biostatistics Analysis Support Hub (BBASH), College of Medicine, Biological Sciences and Psychology, University of Leicester, Leicester, UK
| | - Rachel Hemsley
- Current address UCL Business PLC, The Network Building, 97 Tottenham Court Road, London W1T 4TP, UK
| | - Pascale Rossignol
- Current address Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06520, USA
| | - Thaleia Papageorgiou
- Department of Biology, University of Leicester, University Road, Leicester LE1 7RH, UK
| | - Sinéad Drea
- Department of Biology, University of Leicester, University Road, Leicester LE1 7RH, UK
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114
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Nezhadahmadi A, Prodhan ZH, Faruq G. Drought tolerance in wheat. ScientificWorldJournal 2013; 2013:610721. [PMID: 24319376 PMCID: PMC3844267 DOI: 10.1155/2013/610721] [Citation(s) in RCA: 190] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 09/06/2013] [Indexed: 11/17/2022] Open
Abstract
Drought is one of the most important phenomena which limit crops' production and yield. Crops demonstrate various morphological, physiological, biochemical, and molecular responses to tackle drought stress. Plants' vegetative and reproductive stages are intensively influenced by drought stress. Drought tolerance is a complicated trait which is controlled by polygenes and their expressions are influenced by various environmental elements. This means that breeding for this trait is so difficult and new molecular methods such as molecular markers, quantitative trait loci (QTL) mapping strategies, and expression patterns of genes should be applied to produce drought tolerant genotypes. In wheat, there are several genes which are responsible for drought stress tolerance and produce different types of enzymes and proteins for instance, late embryogenesis abundant (lea), responsive to abscisic acid (Rab), rubisco, helicase, proline, glutathione-S-transferase (GST), and carbohydrates during drought stress. This review paper has concentrated on the study of water limitation and its effects on morphological, physiological, biochemical, and molecular responses of wheat with the possible losses caused by drought stress.
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Affiliation(s)
- Arash Nezhadahmadi
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Zakaria Hossain Prodhan
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Golam Faruq
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
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115
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Zhu YN, Shi DQ, Ruan MB, Zhang LL, Meng ZH, Liu J, Yang WC. Transcriptome analysis reveals crosstalk of responsive genes to multiple abiotic stresses in cotton (Gossypium hirsutum L.). PLoS One 2013; 8:e80218. [PMID: 24224045 PMCID: PMC3818253 DOI: 10.1371/journal.pone.0080218] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Accepted: 09/28/2013] [Indexed: 12/15/2022] Open
Abstract
Abiotic stress is a major environmental factor that limits cotton growth and yield, moreover, this problem has become more and more serious recently, as multiple stresses often occur simultaneously due to the global climate change and environmental pollution. In this study, we sought to identify genes involved in diverse stresses including abscisic acid (ABA), cold, drought, salinity and alkalinity by comparative microarray analysis. Our result showed that 5790, 3067, 5608, 778 and 6148 transcripts, were differentially expressed in cotton seedlings under treatment of ABA (1 μM ABA), cold (4°C), drought (200 mM mannitol), salinity (200 mM NaCl) and alkalinity (pH=11) respectively. Among the induced or suppressed genes, 126 transcripts were shared by all of the five kinds of abiotic stresses, with 64 up-regulated and 62 down-regulated. These common members are grouped as stress signal transduction, transcription factors (TFs), stress response/defense proteins, metabolism, transport facilitation, as well as cell wall/structure, according to the function annotation. We also noticed that large proportion of significant differentially expressed genes specifically regulated in response to different stress. Nine of the common transcripts of multiple stresses were selected for further validation with quantitative real time RT-PCR (qRT-PCR). Furthermore, several well characterized TF families, for example, WRKY, MYB, NAC, AP2/ERF and zinc finger were shown to be involved in different stresses. As an original report using comparative microarray to analyze transcriptome of cotton under five abiotic stresses, valuable information about functional genes and related pathways of anti-stress, and/or stress tolerance in cotton seedlings was unveiled in our result. Besides this, some important common factors were focused for detailed identification and characterization. According to our analysis, it suggested that there was crosstalk of responsive genes or pathways to multiple abiotic or even biotic stresses, in cotton. These candidate genes will be worthy of functional study under diverse stresses.
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Affiliation(s)
- Ya-Na Zhu
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Dong-Qiao Shi
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- * E-mail: (WCY); (DQS)
| | - Meng-Bin Ruan
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Li-Li Zhang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Zhao-Hong Meng
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Jie Liu
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Wei-Cai Yang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- * E-mail: (WCY); (DQS)
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116
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Trivedi DK, Bhatt H, Pal RK, Tuteja R, Garg B, Johri AK, Bhavesh NS, Tuteja N. Structure of RNA-interacting cyclophilin A-like protein from Piriformospora indica that provides salinity-stress tolerance in plants. Sci Rep 2013; 3:3001. [PMID: 24141523 PMCID: PMC3801112 DOI: 10.1038/srep03001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 10/03/2013] [Indexed: 11/09/2022] Open
Abstract
Soil salinity problems are widespread around the globe with increased risk of spreading over the years. The fungus Piriformospora indica, identified in Indian Thar desert, colonizes the roots of monocotyledon plants and provides resistance towards biotic as well as abiotic stress conditions. We have identified a cyclophilin A-like protein from P. indica (PiCypA), which shows higher expression levels during salinity stress. The transgenic tobacco plants overexpressing PiCypA develop osmotic tolerance and exhibit normal growth under osmotic stress conditions. The crystal structure and NMR spectroscopy of PiCypA show a canonical cyclophilin like fold exhibiting a novel RNA binding activity. The RNA binding activity of the protein and identification of the key residues involved in the RNA recognition is unique for this class of protein. Here, we demonstrate for the first time a direct evidence of countering osmotic stress tolerance in plant by genetic modification using a P. indica gene.
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Affiliation(s)
| | - Harshesh Bhatt
- Structural and Computational Biology group
- These authors contributed equally to this work
| | - Ravi Kant Pal
- National Institute of Immunology (NII), Aruna Asaf Ali Marg, New Delhi 110 067, India
| | - Renu Tuteja
- Malaria group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi 110 067 India
| | | | - Atul Kumar Johri
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110 067 India
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117
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Xu Y, Gao S, Yang Y, Huang M, Cheng L, Wei Q, Fei Z, Gao J, Hong B. Transcriptome sequencing and whole genome expression profiling of chrysanthemum under dehydration stress. BMC Genomics 2013; 14:662. [PMID: 24074255 PMCID: PMC3849779 DOI: 10.1186/1471-2164-14-662] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Accepted: 09/25/2013] [Indexed: 12/15/2022] Open
Abstract
Background Chrysanthemum is one of the most important ornamental crops in the world and drought stress seriously limits its production and distribution. In order to generate a functional genomics resource and obtain a deeper understanding of the molecular mechanisms regarding chrysanthemum responses to dehydration stress, we performed large-scale transcriptome sequencing of chrysanthemum plants under dehydration stress using the Illumina sequencing technology. Results Two cDNA libraries constructed from mRNAs of control and dehydration-treated seedlings were sequenced by Illumina technology. A total of more than 100 million reads were generated and de novo assembled into 98,180 unique transcripts which were further extensively annotated by comparing their sequencing to different protein databases. Biochemical pathways were predicted from these transcript sequences. Furthermore, we performed gene expression profiling analysis upon dehydration treatment in chrysanthemum and identified 8,558 dehydration-responsive unique transcripts, including 307 transcription factors and 229 protein kinases and many well-known stress responsive genes. Gene ontology (GO) term enrichment and biochemical pathway analyses showed that dehydration stress caused changes in hormone response, secondary and amino acid metabolism, and light and photoperiod response. These findings suggest that drought tolerance of chrysanthemum plants may be related to the regulation of hormone biosynthesis and signaling, reduction of oxidative damage, stabilization of cell proteins and structures, and maintenance of energy and carbon supply. Conclusions Our transcriptome sequences can provide a valuable resource for chrysanthemum breeding and research and novel insights into chrysanthemum responses to dehydration stress and offer candidate genes or markers that can be used to guide future studies attempting to breed drought tolerant chrysanthemum cultivars.
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Affiliation(s)
- Yanjie Xu
- Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, China.
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118
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Sewelam N, Kazan K, Thomas-Hall SR, Kidd BN, Manners JM, Schenk PM. Ethylene response factor 6 is a regulator of reactive oxygen species signaling in Arabidopsis. PLoS One 2013; 8:e70289. [PMID: 23940555 PMCID: PMC3734174 DOI: 10.1371/journal.pone.0070289] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Accepted: 06/18/2013] [Indexed: 11/18/2022] Open
Abstract
Reactive oxygen species (ROS) are produced in plant cells in response to diverse biotic and abiotic stresses as well as during normal growth and development. Although a large number of transcription factor (TF) genes are up- or down-regulated by ROS, currently very little is known about the functions of these TFs during oxidative stress. In this work, we examined the role of ERF6 (ETHYLENE RESPONSE FACTOR6), an AP2/ERF domain-containing TF, during oxidative stress responses in Arabidopsis. Mutant analyses showed that NADPH oxidase (RbohD) and calcium signaling are required for ROS-responsive expression of ERF6. erf6 insertion mutant plants showed reduced growth and increased H2O2 and anthocyanin levels. Expression analyses of selected ROS-responsive genes during oxidative stress identified several differentially expressed genes in the erf6 mutant. In particular, a number of ROS responsive genes, such as ZAT12, HSFs, WRKYs, MAPKs, RBOHs, DHAR1, APX4, and CAT1 were more strongly induced by H2O2 in erf6 plants than in wild-type. In contrast, MDAR3, CAT3, VTC2 and EX1 showed reduced expression levels in the erf6 mutant. Taken together, our results indicate that ERF6 plays an important role as a positive antioxidant regulator during plant growth and in response to biotic and abiotic stresses.
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Affiliation(s)
- Nasser Sewelam
- Plant-Microbe Interactions Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Kemal Kazan
- Commonwealth Scientific and Industrial Research Organization Plant Industry, Queensland Bioscience Precinct, Brisbane, Queensland, Australia
| | - Skye R. Thomas-Hall
- Plant-Microbe Interactions Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Brendan N. Kidd
- Plant-Microbe Interactions Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland, Australia
- Commonwealth Scientific and Industrial Research Organization Plant Industry, Queensland Bioscience Precinct, Brisbane, Queensland, Australia
| | - John M. Manners
- Commonwealth Scientific and Industrial Research Organization Plant Industry, Queensland Bioscience Precinct, Brisbane, Queensland, Australia
| | - Peer M. Schenk
- Plant-Microbe Interactions Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland, Australia
- * E-mail:
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119
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Hu W, Huang C, Deng X, Zhou S, Chen L, Li Y, Wang C, Ma Z, Yuan Q, Wang Y, Cai R, Liang X, Yang G, He G. TaASR1, a transcription factor gene in wheat, confers drought stress tolerance in transgenic tobacco. PLANT, CELL & ENVIRONMENT 2013; 36:1449-64. [PMID: 23356734 DOI: 10.1111/pce.12074] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 01/15/2013] [Accepted: 01/22/2013] [Indexed: 05/06/2023]
Abstract
Abscisic acid (ABA)-, stress-, and ripening-induced (ASR) proteins are reported to be involved in abiotic stresses. However, it is not known whether ASR genes confer drought stress tolerance by utilizing the antioxidant system. In this study, a wheat ASR gene, TaASR1, was cloned and characterized. TaASR1 transcripts increased after treatments with PEG6000, ABA and H(2)O(2). Overexpression of TaASR1 in tobacco resulted in increased drought/osmotic tolerance, which was demonstrated that transgenic lines had lesser malondialdehyde (MDA), ion leakage (IL) and reactive oxygen species (ROS), but higher relative water content (RWC) and superoxide dismutase (SOD) and catalase (CAT) activities than wild type (WT) under drought stress. Overexpression of TaASR1 in tobacco also enhanced the expression of ROS-related and stress-responsive genes under osmotic stress. In addition, transgenic lines exhibited improved tolerance to oxidative stress by retaining more effective antioxidant system. Finally, TaASR1 was localized in the cell nucleus and functioned as a transcriptional activator. Taken together, our results showed that TaASR1 functions as a positive factor under drought/osmotic stress, involved in the regulation of ROS homeostasis by activating antioxidant system and transcription of stress-associated genes.
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Affiliation(s)
- Wei Hu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Chinese National Center of Plant Gene Research (Wuhan) HUST Part, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science & Technology (HUST), Wuhan, 430074, China
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120
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Cheng L, Li S, Hussain J, Xu X, Yin J, Zhang Y, Chen X, Li L. Isolation and functional characterization of a salt responsive transcriptional factor, LrbZIP from lotus root (Nelumbo nucifera Gaertn). Mol Biol Rep 2013; 40:4033-45. [PMID: 23288562 DOI: 10.1007/s11033-012-2481-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 12/20/2012] [Indexed: 10/27/2022]
Abstract
Basic leucine zipper transcription factor (bZIP) is involved in signaling transduction for various stress responses. Here we reported a bZIP transcription factor (accession: JX887153) isolated from a salt-resistant lotus root using cDNA-AFLP approach with RT-PCR and RACE-PCR method. Full-length cDNA which consisted of a single open reading frame encoded a putative polypeptide of 488 amino acids. On the basis of 78, 76, and 75 % sequence similarity with the bZIPs from Medicago truncatula (XP_003596814.1), Carica papaya (ABS01351.1) and Arabidopsis thaliana (NP_563810.2), we designed it as LrbZIP. Semi quantitative RT-PCR results, performed on the total RNA extracted from tips of lotus root, showed that LrbZIP expression was increased with 250 mM NaCl treatment for 18 h. Effects of low temperature on the expression of LrbZIP was also studied, and its expression was significantly enhanced with a 4 °C treatment for 12 h. In addition, LrbZIP expression was strongly induced by treatment with exogenous 100 μM ABA. To evaluate its function across the species, tobacco (Nicotiana tabacum L.) was transformed with LrbZIP in a binary vector construct. Transgenic plants exhibited higher resistance as compared with the control according to the results of the root growth, chlorophyll content and electrolyte leakage when exposed to NaCl treatment. In addition, LrCDPK2, LrLEA, and TPP also showed enhanced expression in the transgenic plants. Overall, expression of LrbZIP was probably very important for salt-resistant lotus root to survive through salt stress.
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Affiliation(s)
- Libao Cheng
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
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121
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Cortés AJ, Monserrate FA, Ramírez-Villegas J, Madriñán S, Blair MW. Drought tolerance in wild plant populations: the case of common beans (Phaseolus vulgaris L.). PLoS One 2013; 8:e62898. [PMID: 23658783 PMCID: PMC3643911 DOI: 10.1371/journal.pone.0062898] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 03/27/2013] [Indexed: 01/26/2023] Open
Abstract
Reliable estimations of drought tolerance in wild plant populations have proved to be challenging and more accessible alternatives are desirable. With that in mind, an ecological diversity study was conducted based on the geographical origin of 104 wild common bean accessions to estimate drought tolerance in their natural habitats. Our wild population sample covered a range of mesic to very dry habitats from Mexico to Argentina. Two potential evapotranspiration models that considered the effects of temperature and radiation were coupled with the precipitation regimes of the last fifty years for each collection site based on geographical information system analysis. We found that wild accessions were distributed among different precipitation regimes following a latitudinal gradient and that habitat ecological diversity of the collection sites was associated with natural sub-populations. We also detected a broader geographic distribution of wild beans across ecologies compared to cultivated common beans in a reference collection of 297 cultivars. Habitat drought stress index based on the Thornthwaite potential evapotranspiration model was equivalent to the Hamon estimator. Both ecological drought stress indexes would be useful together with population structure for the genealogical analysis of gene families in common bean, for genome-wide genetic-environmental associations, and for postulating the evolutionary history and diversification processes that have occurred for the species. Finally, we propose that wild common bean should be taken into account to exploit variation for drought tolerance in cultivated common bean which is generally considered susceptible as a crop to drought stress.
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Affiliation(s)
- Andrés J. Cortés
- Evolutionary Biology Center, Uppsala University, Uppsala, Sweden
- Laboratorio de Botánica y Sistemática, Universidad de los Andes, Bogotá, Colombia
- * E-mail: (AJC); (MWB)
| | | | - Julián Ramírez-Villegas
- School of Earth and Environment, University of Leeds, Leeds, United Kingdom
- CGIAR Program on Climate Change, Agriculture and Food Security (CCAFS), Cali, Colombia
| | - Santiago Madriñán
- Laboratorio de Botánica y Sistemática, Universidad de los Andes, Bogotá, Colombia
| | - Matthew W. Blair
- Department of Plant Breeding, Cornell University, Ithaca, NY, United States
- * E-mail: (AJC); (MWB)
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122
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Álvarez Viveros MF, Inostroza-Blancheteau C, Timmermann T, González M, Arce-Johnson P. Overexpression of GlyI and GlyII genes in transgenic tomato (Solanum lycopersicum Mill.) plants confers salt tolerance by decreasing oxidative stress. Mol Biol Rep 2013; 40:3281-90. [DOI: 10.1007/s11033-012-2403-4] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 12/17/2012] [Indexed: 11/29/2022]
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123
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Identification of early response genes to salt stress in roots of melon (Cucumis melo L.) seedlings. Mol Biol Rep 2012; 40:2915-26. [PMID: 23212618 DOI: 10.1007/s11033-012-2307-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 11/19/2012] [Indexed: 10/27/2022]
Abstract
In order to better understand the mechanisms by which muskmelons (Cucumis melo L.) respond to salt stress, a cDNA library was constructed using suppression subtractive hybridization (SSH) from the root tissue of a salt-tolerant melon cultivar, Bingxuecui. A total of 339 clones were sequenced from the SSH library, leading to 312 high quality expressed sequence tags (ESTs), with an average size of 450 bp; representing 262 uni-ESTs comprising 29 contigs and 233 singletons. Blast analysis of the deduced protein sequences revealed that 283 ESTs had a high similarity to proteins in the non-redundant database, while 29 had low identity or no similarities. Many of the annotated sequences were homologous to genes involved in abiotic or biotic stress in plants. Functional categorization of the proteins revealed that salt tolerance could be largely determined by various proteins involved in metabolism, energy, transcription, signal transduction, protein fate, cell rescue and defense, implying a complex response to salt stress exists in melon plants. Twenty-seven ESTs were selected and analyzed by real-time PCR; the results confirmed that a high proportion of the ESTs were activated by salt stress. The complete sequences and a detailed functional analysis of these ESTs is required, in order to fully understand the broader impact of these genes in plants subjected to a high salinity environment.
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124
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Amid A, Lytovchenko A, Fernie AR, Warren G, Thorlby GJ. The sensitive to freezing3 mutation of Arabidopsis thaliana is a cold-sensitive allele of homomeric acetyl-CoA carboxylase that results in cold-induced cuticle deficiencies. JOURNAL OF EXPERIMENTAL BOTANY 2012; 63:5289-99. [PMID: 22791831 PMCID: PMC3431002 DOI: 10.1093/jxb/ers191] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The sfr3 mutation causes freezing sensitivity in Arabidopsis thaliana. Mapping, sequencing, and transgenic complementation showed sfr3 to be a missense mutation in ACC1, an essential gene encoding homomeric (multifunctional) acetyl-CoA carboxylase. Cuticle permeability was compromised in the sfr3 mutant when plants were grown in the cold but not in the warm. Wax deposition on the inflorescence stem of cold-grown sfr3 plants was inhibited and the long-chain components of their leaf cuticular wax were reduced compared with wild-type plants. Thus, freezing sensitivity of sfr3 appears, from these results, to be due to cuticular deficiencies that develop during cold acclimation. These observations demonstrated the essential role of the cuticle in tolerance to freezing and drought.
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Affiliation(s)
- Azura Amid
- School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, TW20 0EX UK
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125
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Neves-Borges AC, Guimarães-Dias F, Cruz F, Mesquita RO, Nepomuceno AL, Romano E, Loureiro ME, de Fátima Grossi-de-Sá M, Alves-Ferreira M. Expression pattern of drought stress marker genes in soybean roots under two water deficit systems. Genet Mol Biol 2012; 35:212-21. [PMID: 22802707 PMCID: PMC3392874 DOI: 10.1590/s1415-47572012000200003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The study of tolerance mechanisms for drought stress in soybean is fundamental to the understanding and development of tolerant varieties. Using in silico analysis, four marker genes involved in the classical ABA-dependent and ABA-independent pathways of drought response were identified in the Glycine max genome in the present work. The expression profiles of the marker genes ERD1-like, GmaxRD20A-like, GmaxRD22-like and GmaxRD29B-like were investigated by qPCR in root samples of drought sensitive and tolerant soybean cultivars (BR 16 and Embrapa 48, respectively), submitted to water deficit conditions in hydroponic and pot-based systems. Among the four putative soybean homologs to Arabidopsis genes investigated herein, only GmaxRD29B-like was not regulated by water deficit stress. Distinct expression profiles and different induction levels were observed among the genes, as well as between the two drought-inducing systems. Our results showed contrasting gene expression responses for the GmaxRD20A-like and GmaxRD22-like genes. GmaxRD20A-like was highly induced by continuous drought acclimating conditions, whereas GmaxRD22-like responses decreased after abrupt water deprivation. GmaxERD1-like showed a different expression profile for the cultivars in each system. Conversely, GmaxRD20A-like and GmaxRD22-like genes exhibited similar expression levels in tolerant plants in both systems.
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126
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Soares-Cavalcanti NM, Belarmino LC, Kido EA, Wanderley-Nogueira AC, Bezerra-Neto JP, Cavalcanti-Lira R, Pandolfi V, Nepomuceno AL, Abdelnoor RV, Nascimento LC, Benko-Iseppon AM. In silico identification of known osmotic stress responsive genes from Arabidopsis in soybean and Medicago. Genet Mol Biol 2012; 35:315-21. [PMID: 22802716 PMCID: PMC3392883 DOI: 10.1590/s1415-47572012000200012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Plants experience various environmental stresses, but tolerance to these adverse conditions is a very complex phenomenon. The present research aimed to evaluate a set of genes involved in osmotic response, comparing soybean and medicago with the well-described Arabidopsis thaliana model plant. Based on 103 Arabidopsis proteins from 27 categories of osmotic stress response, comparative analyses against Genosoja and Medicago truncatula databases allowed the identification of 1,088 soybean and 1,210 Medicago sequences. The analysis showed a high number of sequences and high diversity, comprising genes from all categories in both organisms. Genes with unknown function were among the most representative, followed by transcription factors, ion transport proteins, water channel, plant defense, protein degradation, cellular structure, organization & biogenesis and senescence. An analysis of sequences with unknown function allowed the annotation of 174 soybean and 217 Medicago sequences, most of them concerning transcription factors. However, for about 30% of the sequences no function could be attributed using in silico procedures. The establishment of a gene set involved in osmotic stress responses in soybean and barrel medic will help to better understand the survival mechanisms for this type of stress condition in legumes.
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Affiliation(s)
- Nina M Soares-Cavalcanti
- Departamento de Genética, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Recife, PE, Brazil
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127
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Kumar R, Mustafiz A, Sahoo KK, Sharma V, Samanta S, Sopory SK, Pareek A, Singla-Pareek SL. Functional screening of cDNA library from a salt tolerant rice genotype Pokkali identifies mannose-1-phosphate guanyl transferase gene (OsMPG1) as a key member of salinity stress response. PLANT MOLECULAR BIOLOGY 2012; 79:555-68. [PMID: 22644442 DOI: 10.1007/s11103-012-9928-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Accepted: 05/13/2012] [Indexed: 05/19/2023]
Abstract
Salinity, one of the most deleterious stresses, affects growth and overall yield of crop plants. To identify new "candidate genes" having potential role in salinity tolerance, we have carried out 'functional screening' of a cDNA library (made from a salt tolerant rice-Pokkali). Based on this screening, we identified a cDNA clone that was allowing yeast cells to grow in the presence of 1.2 M NaCl. Sequencing and BLAST search identified it as mannose-1-phosphate guanyl transferase (OsMPG1) gene from rice. Analysis of rice genome sequence database indicated the presence of 3 additional genes for MPG. Out of four, three MPG genes viz. OsMPG1, 3 and 4 were able to functionally complement yeast MPG mutant -YDL055C. We have carried out detailed transcript profiling of all members of MPG family by qRT-PCR using two contrasting rice genotypes (IR64 and Pokkali) under different abiotic stresses (salinity, drought, oxidative stress, heat stress, cold or UV light). These MPG genes showed differential expression under various abiotic stresses with two genes (OsMPG1 and 3) showing high induction in response to multiple stresses. Analysis of rice microarray data indicated higher expression levels for OsMPG1 in specific tissues such as roots, leaves, shoot apical meristem and different stages of panicle and seed development, thereby indicating its developmental regulation. Functional validation of OsMPG1 carried out by overexpression in the transgenic tobacco revealed its involvement in enhancing salinity stress tolerance.
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Affiliation(s)
- Ritesh Kumar
- Plant Molecular Biology, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India
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128
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Effects of Group 3 LEA protein model peptides on desiccation-induced protein aggregation. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2012; 1824:891-7. [DOI: 10.1016/j.bbapap.2012.04.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 04/04/2012] [Accepted: 04/30/2012] [Indexed: 11/21/2022]
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129
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Ngara R, Ndimba R, Borch-Jensen J, Jensen ON, Ndimba B. Identification and profiling of salinity stress-responsive proteins in Sorghum bicolor seedlings. J Proteomics 2012; 75:4139-50. [DOI: 10.1016/j.jprot.2012.05.038] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2012] [Revised: 05/18/2012] [Accepted: 05/21/2012] [Indexed: 11/27/2022]
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130
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Guimarães-Dias F, Neves-Borges AC, Viana AAB, Mesquita RO, Romano E, de Fátima Grossi-de-Sá M, Nepomuceno AL, Loureiro ME, Alves-Ferreira M. Expression analysis in response to drought stress in soybean: Shedding light on the regulation of metabolic pathway genes. Genet Mol Biol 2012; 35:222-32. [PMID: 22802708 PMCID: PMC3392875 DOI: 10.1590/s1415-47572012000200004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Metabolomics analysis of wild type Arabidopsis thaliana plants, under control and drought stress conditions revealed several metabolic pathways that are induced under water deficit. The metabolic response to drought stress is also associated with ABA dependent and independent pathways, allowing a better understanding of the molecular mechanisms in this model plant. Through combining an in silico approach and gene expression analysis by quantitative real-time PCR, the present work aims at identifying genes of soybean metabolic pathways potentially associated with water deficit. Digital expression patterns of Arabidopsis genes, which were selected based on the basis of literature reports, were evaluated under drought stress condition by Genevestigator. Genes that showed strong induction under drought stress were selected and used as bait to identify orthologs in the soybean genome. This allowed us to select 354 genes of putative soybean orthologs of 79 Arabidopsis genes belonging to 38 distinct metabolic pathways. The expression pattern of the selected genes was verified in the subtractive libraries available in the GENOSOJA project. Subsequently, 13 genes from different metabolic pathways were selected for validation by qPCR experiments. The expression of six genes was validated in plants undergoing drought stress in both pot-based and hydroponic cultivation systems. The results suggest that the metabolic response to drought stress is conserved in Arabidopsis and soybean plants.
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Affiliation(s)
- Fábia Guimarães-Dias
- Laboratório de Genética Molecular Vegetal, Departamento de Genética, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Anna Cristina Neves-Borges
- Laboratório Integrado de Biologia Vegetal II, Departamento de Botânica, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | | | - Eduardo Romano
- Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, Brasília, DF, Brazil
| | | | | | | | - Márcio Alves-Ferreira
- Laboratório de Genética Molecular Vegetal, Departamento de Genética, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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131
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Latta LC, Weider LJ, Colbourne JK, Pfrender ME. The evolution of salinity tolerance inDaphnia: a functional genomics approach. Ecol Lett 2012; 15:794-802. [DOI: 10.1111/j.1461-0248.2012.01799.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 02/07/2012] [Accepted: 04/17/2012] [Indexed: 11/27/2022]
Affiliation(s)
- Leigh C. Latta
- Department of Molecular and Cellular Biology; Harvard University; 16 Divinity Ave; Cambridge; MA; 02138-2019; USA
| | - Lawrence J. Weider
- Department of Zoology and Biological Station; University of Oklahoma; 730 Van Vleet Oval; Norman; OK; 73019-0230; USA
| | - John K. Colbourne
- Center for Genomics and Bioinformatics; Indiana University; 915 East Third Street; Bloomington; IN; 47405; USA
| | - Michael E. Pfrender
- Department of Biological Sciences; University of Notre Dame; 109B Galvin Life Sciences; Notre Dame; IN; 46556; USA
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132
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Mao X, Zhang H, Qian X, Li A, Zhao G, Jing R. TaNAC2, a NAC-type wheat transcription factor conferring enhanced multiple abiotic stress tolerances in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2012; 63:2933-46. [PMID: 22330896 PMCID: PMC3350912 DOI: 10.1093/jxb/err462] [Citation(s) in RCA: 193] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 12/22/2011] [Accepted: 12/23/2011] [Indexed: 05/18/2023]
Abstract
Environmental stresses such as drought, salinity, and cold are major factors that significantly limit agricultural productivity. NAC transcription factors play essential roles in response to various abiotic stresses. However, the paucity of wheat NAC members functionally characterized to date does not match the importance of this plant as a world staple crop. Here, the function of TaNAC2 was characterized in Arabidopsis thaliana. A fragment of TaNAC2 was obtained from suppression subtractive cDNA libraries of wheat treated with polyethylene glycol, and its full-length cDNA was obtained by searching a full-length wheat cDNA library. Gene expression profiles indicated that TaNAC2 was involved in response to drought, salt, cold, and abscisic acid treatment. To test its function, transgenic Arabidopsis lines overexpressing TaNAC2-GFP controlled by the cauliflower mosaic virus 35S promoter were generated. Overexpression of TaNAC2 resulted in enhanced tolerances to drought, salt, and freezing stresses in Arabidopsis, which were simultaneously demonstrated by enhanced expression of abiotic stress-response genes and several physiological indices. Therefore, TaNAC2 has potential for utilization in transgenic breeding to improve abiotic stress tolerances in crops.
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Affiliation(s)
| | | | | | | | | | - Ruilian Jing
- To whom correspondence should be addressed. E-mail:
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133
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Ganguly M, Datta K, Roychoudhury A, Gayen D, Sengupta DN, Datta SK. Overexpression of Rab16A gene in indica rice variety for generating enhanced salt tolerance. PLANT SIGNALING & BEHAVIOR 2012; 7:502-9. [PMID: 22499169 PMCID: PMC3419040 DOI: 10.4161/psb.19646] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
We report here the overexpression of Rab16A full length gene (promoter + ORF), from the salt-tolerant indica rice Pokkali, in the salt-susceptible indica rice variety Khitish, via particle bombardment. Molecular analysis of the transgenics revealed stable integration of the transgene upto T2 generation. High level of expression of the transgene (driven by its own stress-inducible promoter), as well as the protein, was detectable in the leaves under simulated salinity stress (250 mM NaCl, 24 h); the expression level being higher than wild type (WT) plants. The Rab16A transcript also increased gradually with seed maturity, with its maximal accumulation at 30 d after pollination (DAP) i.e., fully matured seeds, explaining the protective role of Rab16A gene during seed maturation. Enhanced tolerance to salinity was observed in the plants transformed with Rab16A. The superior physiological performances of the transgenics under salt treatment were also reflected in lesser shoot or root length inhibition, reduced chlorophyll damages, lesser accumulation of Na(+) and reduced loss of K(+), increased proline content as compared with the WT plants. All these results indicated that the overproduction of RAB16A protein in the transgenics enable them to display enhanced tolerance to salinity stress with improved physiological traits. Our work demonstrates the profound potential of Group 2 LEA proteins (to which RAB16A belongs to) in conferring stress tolerance in crop plants through their genetic manipulation.
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Affiliation(s)
- Moumita Ganguly
- Plant Molecular Biology and Biotechnology Laboratory; Department of Botany; University of Calcutta; Kolkata, India
| | - Karabi Datta
- Plant Molecular Biology and Biotechnology Laboratory; Department of Botany; University of Calcutta; Kolkata, India
| | - Aryadeep Roychoudhury
- Plant Molecular Biology and Biotechnology Laboratory; Department of Botany; University of Calcutta; Kolkata, India
| | - Dipak Gayen
- Plant Molecular Biology and Biotechnology Laboratory; Department of Botany; University of Calcutta; Kolkata, India
| | | | - Swapan K. Datta
- Plant Molecular Biology and Biotechnology Laboratory; Department of Botany; University of Calcutta; Kolkata, India
- Indian Council of Agricultural Research; Krishi Bhawan; New Delhi, India
- Correspondence to: Swapan K. Datta,
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134
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Saeed M, Dahab AHA, Wangzhen G, Tianzhen Z. A cascade of recently discovered molecular mechanisms involved in abiotic stress tolerance of plants. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2012; 16:188-99. [PMID: 22433075 DOI: 10.1089/omi.2011.0109] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Today, agriculture is facing a tremendous threat from the climate change menace. As human survival is dependent on a constant supply of food from plants as the primary producers, we must aware of the underlying molecular mechanisms that plants have acquired as a result of molecular evolution to cope this rapidly changing environment. This understanding will help us in designing programs aimed at developing crop plant cultivars best suited to our needs of a sustainable agriculture. The field of systems biology is rapidly progressing, and new insight is coming out about the molecular mechanisms involved in abiotic stress tolerance. There is a cascade of changes in transcriptome, proteome, and metabolome of plants during these stress responses. We have tried to cover most pronounced recent developments in the field of "omics" related to abiotic stress tolerance of plants. These changes are very coordinated, and often there is crosstalk between different components of stress tolerance. The functions of various molecular entities are becoming more clear and being associated with more precise biological phenomenon.
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Affiliation(s)
- Muhammad Saeed
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan.
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135
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Ben Saad R, Fabre D, Mieulet D, Meynard D, Dingkuhn M, Al-Doss A, Guiderdoni E, Hassairi A. Expression of the Aeluropus littoralis AlSAP gene in rice confers broad tolerance to abiotic stresses through maintenance of photosynthesis. PLANT, CELL & ENVIRONMENT 2012; 35:626-43. [PMID: 21988523 DOI: 10.1111/j.1365-3040.2011.02441.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The expression of AlSAP, in rice cv. Nipponbare, enhances plant tolerance to cold, drought and salt stresses. AlSAP lines showed 100% survival rate and set seeds while control plants did not recover from the cold treatment. Under a severe drought stress treatment (fraction of transpirable soil water down to 0.1), AlSAP lines exhibited enhanced Transpiration Efficiency (TE) and maintained a high A (Assimilation rate) value (22 µmol·m(-2) s(-1) ) while these values dramatically decreased (A = 4 µmol·m(-2) s(-1) ) in control plants which were subsequently unable to recover from the stress. Of noteworthy is that AlSAP rice plants yielded a similar and a 60% seed set under control and stress conditions respectively, with regard to wild-type (WT) plants grown under control conditions. This indicates that AlSAP expression imposes no yield penalty and allows seed production even following a severe drought stress at the vegetative stage. Furthermore, AlSAP rice was shown to accumulate transcripts of a pilot set of eight stress-related genes at a significantly higher level than WT plants, both under control and stressed conditions. The results suggest that AlSAP expression generates stress tolerance in plants through maintenance of the photosynthetic apparatus integrity and by stimulating an endogenous adaptive potential which is not effectively accomplished in WT plants.
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Affiliation(s)
- Rania Ben Saad
- University of Sfax, Centre of Biotechnology of Sfax, LPAP, Sfax, Tunisia
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136
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Ambrosone A, Costa A, Leone A, Grillo S. Beyond transcription: RNA-binding proteins as emerging regulators of plant response to environmental constraints. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2012; 182:12-8. [PMID: 22118611 DOI: 10.1016/j.plantsci.2011.02.004] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 02/04/2011] [Accepted: 02/08/2011] [Indexed: 05/20/2023]
Abstract
RNA-binding proteins (RBPs) govern many aspects of RNA metabolism, including pre-mRNA processing, transport, stability/decay and translation. Although relatively few plant RNA-binding proteins have been characterized genetically and biochemically, more than 200 RBP genes have been predicted in Arabidopsis and rice genomes, suggesting that they might serve specific plant functions. Besides their role in normal cellular functions, RBPs are emerging also as an interesting class of proteins involved in a wide range of post-transcriptional regulatory events that are important in providing plants with the ability to respond rapidly to changes in environmental conditions. Here, we review the most recent results and evidence on the functional role of RBPs in plant adaptation to various unfavourable environmental conditions and their contribution to enhance plant tolerance to abiotic stresses, with special emphasis on osmotic and temperature stress.
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Affiliation(s)
- Alfredo Ambrosone
- National Research Council of Italy-Institute of Plant Genetics (CNR-IGV), Via Università 133, 80055 Portici, Naples, Italy
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137
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Osakabe Y, Kawaoka A, Nishikubo N, Osakabe K. Responses to environmental stresses in woody plants: key to survive and longevity. JOURNAL OF PLANT RESEARCH 2012; 125:1-10. [PMID: 21874628 DOI: 10.1007/s10265-011-0446-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Accepted: 07/13/2011] [Indexed: 05/08/2023]
Abstract
Environmental stresses have adverse effects on plant growth and productivity, and are predicted to become more severe and widespread in decades to come. Especially, prolonged and repeated severe stresses affecting growth and development would bring down long-lasting effects in woody plants as a result of its long-term growth period. To counteract these effects, trees have evolved specific mechanisms for acclimation and tolerance to environmental stresses. Plant growth and development are regulated by the integration of many environmental and endogenous signals including plant hormones. Acclimation of land plants to environmental stresses is controlled by molecular cascades, also involving cross-talk with other stresses and plant hormone signaling mechanisms. This review focuses on recent studies on molecular mechanisms of abiotic stress responses in woody plants, functions of plant hormones in wood formation, and the interconnection of cell wall biosynthesis and the mechanisms shown above. Understanding of these mechanisms in depth should shed light on the factors for improvement of woody plants to overcome severe environmental stress conditions.
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Affiliation(s)
- Yuriko Osakabe
- Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
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138
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Pons R, Cornejo MJ, Sanz A. Differential salinity-induced variations in the activity of H⁺-pumps and Na⁺/H⁺ antiporters that are involved in cytoplasm ion homeostasis as a function of genotype and tolerance level in rice cell lines. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2011; 49:1399-409. [PMID: 22078377 DOI: 10.1016/j.plaphy.2011.09.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2011] [Accepted: 09/22/2011] [Indexed: 05/05/2023]
Abstract
The characterisation of cellular responses to salinity in staple crops is necessary for the reliable identification of physiological markers of salinity tolerance. Under saline conditions, variations in proton gradients that are generated by membrane-bound H⁺ pumps are crucial for maintaining cytoplasm homeostasis. We examined short (15 h) and longer term effects (4 days) of NaCl stress on the H⁺ pumping activities that are associated with the plasma membrane (P-ATPase) and the tonoplast (V-ATPase and V-PPase) in rice (Oryza sativa L.) callus lines that displayed different levels of NaCl tolerance and were established from two japonica rice cultivars. The applied stress conditions were based on those that were used in the induction of a stress-responsive polyubiquitin gene promoter (UBI1) in transgenic rice calli. The most remarkable effect of NaCl stress on H⁺ pumping was the rapid activation of tonoplast-bound pumps; this was particularly observed in cv. Bomba, in which the response of the P-ATPase was slower and showed a higher level of activity after 4 days of stress. The responses were cultivar-dependent; however, in general, a stronger activation occurred in the lines that had a higher tolerance (L-T) than in the less-tolerant (L-S) lines. Substrate hydrolysis was less affected than H⁺ pumping, and it yielded higher H⁺/substrate coupling ratios, which is indicative of an enhanced H⁺ pumping efficiency under saline conditions. The Na⁺/H⁺ antiport activity was generally limited to salt-stressed calli, and higher values and stronger activation of the tonoplast antiporter were observed in the L-T lines than in the L-S lines. The results that were obtained with the NaCl-stressed transgenic lines confirmed the close relationship between metabolic activity, H⁺ pumping and the induction of Na⁺/H⁺ exchange activities.
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Affiliation(s)
- Raül Pons
- Department of Biologia Vegetal, Facultat de Biològiques, Universitat de València, c/Dr. Moliner 50, 46100 Burjassot, València, Spain
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139
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Sanghera GS, Wani SH, Hussain W, Singh NB. Engineering cold stress tolerance in crop plants. Curr Genomics 2011; 12:30-43. [PMID: 21886453 PMCID: PMC3129041 DOI: 10.2174/138920211794520178] [Citation(s) in RCA: 209] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 11/26/2010] [Accepted: 12/28/2010] [Indexed: 11/22/2022] Open
Abstract
Plants respond with changes in their pattern of gene expression and protein products when exposed to low temperatures. Thus ability to adapt has an impact on the distribution and survival of the plant, and on crop yields. Many species of tropical or subtropical origin are injured or killed by non-freezing low temperatures, and exhibit various symptoms of chilling injury such as chlorosis, necrosis, or growth retardation. In contrast, chilling tolerant species are able to grow at such cold temperatures. Conventional breeding methods have met with limited success in improving the cold tolerance of important crop plants involving inter-specific or inter-generic hybridization. Recent studies involving full genome profiling/ sequencing, mutational and transgenic plant analyses, have provided a deep insight of the complex transcriptional mechanism that operates under cold stress. The alterations in expression of genes in response to cold temperatures are followed by increases in the levels of hundreds of metabolites, some of which are known to have protective effects against the damaging effects of cold stress. Various low temperature inducible genes have been isolated from plants. Most appear to be involved in tolerance to cold stress and the expression of some of them is regulated by C-repeat binding factor/ dehydration-responsive element binding (CBF/DREB1) transcription factors. Numerous physiological and molecular changes occur during cold acclimation which reveals that the cold resistance is more complex than perceived and involves more than one pathway. The findings summarized in this review have shown potential practical applications for breeding cold tolerance in crop and horticultural plants suitable to temperate geographical locations.
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Affiliation(s)
- Gulzar S Sanghera
- Shere Kashmir University of Agricultural Sciences and Technology of Kashmir, Rice Research and Regional Station, Khudwani, Anantnag, 192102, Kashmir, India
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140
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Zhang L, Li Z, Quan R, Li G, Wang R, Huang R. An AP2 domain-containing gene, ESE1, targeted by the ethylene signaling component EIN3 is important for the salt response in Arabidopsis. PLANT PHYSIOLOGY 2011; 157:854-65. [PMID: 21832142 PMCID: PMC3192559 DOI: 10.1104/pp.111.179028] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Accepted: 08/09/2011] [Indexed: 05/19/2023]
Abstract
Accumulating investigations reveal that ethylene signaling is involved in the salt response in Arabidopsis (Arabidopsis thaliana), and it has been reported that overexpression of a number of ethylene response factor (ERF) genes enhances salt tolerance; however, transcriptional regulation of the ethylene signal component ETHYLENE INSENSITIVE3 (EIN3) in the salt response has not been clearly defined. Consulting microarray data and transcriptional confirmations showed that three of the ERF genes were ethylene and salt inducible, named ESE1 to ESE3. Additionally, the expression of one of the ESE genes (ESE1) was suppressed in ein2, ein3-1, eil1-3, and ein3 eil1 but enhanced in EIN3-overexpressing (EIN3ox) lines. Inhibitors of ethylene biosynthesis, aminoethoxyvinylglycine, and ethylene action, AgNO₃, reduced the expression of ESE1, while ethylene overproduction eto mutants enhanced the expression of ESE1, indicating that ESE1 is an ethylene-modulated gene downstream of EIN3/EIL1. Further analyses with biochemical and molecular approaches revealed that EIN3 physically binds to the ESE1 promoter, demonstrating that ESE1 was one target of EIN3. ESE1 in turn binds to promoters of salt-related genes, such as RD29A and COR15A. Moreover, either EIN3ox or ESE1ox was sufficient to enhance transcript levels of salt-related genes and salt tolerance. In addition, ESE1ox in ein3 enhanced the salt response during seed germination and seedling development, demonstrating that ESE1 is genetically downstream of EIN3. Thus, the evidence in this report reveals that the transcriptional complex of EIN3-ESE1 is a crucial event in the salt response, thereby connecting the transcriptional regulation of EIN3 and the downstream ERF protein ESE1 in the salt response.
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141
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Jamil A, Riaz S, Ashraf M, Foolad MR. Gene Expression Profiling of Plants under Salt Stress. CRITICAL REVIEWS IN PLANT SCIENCES 2011; 30:435-458. [PMID: 0 DOI: 10.1080/07352689.2011.605739] [Citation(s) in RCA: 228] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
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142
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Mito T, Seki M, Shinozaki K, Ohme-Takagi M, Matsui K. Generation of chimeric repressors that confer salt tolerance in Arabidopsis and rice. PLANT BIOTECHNOLOGY JOURNAL 2011; 9:736-46. [PMID: 21114612 DOI: 10.1111/j.1467-7652.2010.00578.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We show here that transgenic Arabidopsis plants that expressed chimeric repressors derived from the AtMYB102, ANAC047, HRS1, ZAT6 and AtERF5 transcription factors were tolerant to treatment with 400 mm NaCl, which was lethal to wild-type plants. The transgenic plants grew well, without any apparent differences from the wild-type plants under normal growth condition. The transgenic lines expressing the AtMYB102, ANAC047 and HRS1 chimeric repressors germinated in the presence of 225 mm NaCl, while those expressing the ZAT6 and AtERF5 did not. However, the latter lines were tolerant to osmotic stress and germinated in the presence of 600 mm mannitol, suggesting a link between responses to salt and osmotic stress. Expression of the AtMYB102, ANAC047, ZAT6 and AtERF5 genes was induced by salt treatment, while that of HRS1 was repressed. HRS1 has transcriptional repressive activity and appears to suppress the expression of factors that negatively regulate salt tolerance. Microarray analysis revealed that the levels of expression of DREB1A, DREB2B and several genes for ZAT transcription factors rose 10- to 100-fold in the AtMYB102 chimeric repressor line under both normal and stress conditions. Elevated expression of DREB- and ZAT- related genes might be involved in the salt tolerance of the AtMYB102 chimeric repressor line. Transgenic rice plants expressing chimeric repressors derived from Os02g0325600 and Os03g0327800, rice homologues of HRS1 and ANAC047, were tolerant to salinity stress demonstrated by suppression of growth inhibition and ion leakages. Expression of a chimeric repressor provides an effective strategy for enhancing tolerance of plants to abiotic stress.
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143
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DeRose-Wilson L, Gaut BS. Mapping salinity tolerance during Arabidopsis thaliana germination and seedling growth. PLoS One 2011; 6:e22832. [PMID: 21857956 PMCID: PMC3155519 DOI: 10.1371/journal.pone.0022832] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Accepted: 07/01/2011] [Indexed: 11/18/2022] Open
Abstract
To characterize and dissect genetic variation for salinity tolerance, we assessed variation in salinity tolerance during germination and seedling growth for a worldwide sample of Arabidopsis thaliana accessions. By combining QTL mapping, association mapping and expression data, we identified genomic regions involved in salinity response. Among the worldwide sample, we found germination ability within a moderately saline environment (150 mM NaCl) varied considerable, from >90% among the most tolerant lines to complete inability to germinate among the most susceptible. Our results also demonstrated wide variation in salinity tolerance within A. thaliana RIL populations and identified multiple genomic regions that contribute to this variation. These regions contain known candidate genes, but at least four of the regions contain loci not yet associated with salinity tolerance response phenotypes. Our observations suggest A. thaliana natural variation may be an underutilized resource for investigating salinity stress response.
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Affiliation(s)
- Leah DeRose-Wilson
- Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, California, United States of America
| | - Brandon S. Gaut
- Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, California, United States of America
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144
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Ditt RF, Gentile A, Tavares RG, Camargo SR, Fernandez JH, Silva MJD, Menossi M. Analysis of the stress-inducible transcription factor SsNAC23 in sugarcane plants. SCIENTIA AGRICOLA 2011. [PMID: 0 DOI: 10.1590/s0103-90162011000400010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
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145
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Furuki T, Shimizu T, Kikawada T, Okuda T, Sakurai M. Salt Effects on the Structural and Thermodynamic Properties of a Group 3 LEA Protein Model Peptide. Biochemistry 2011; 50:7093-103. [DOI: 10.1021/bi200719s] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takao Furuki
- Center for Biological Resources and Informatics, Tokyo Institute of Technology, 4259-B-62, Nagatsuta-cho,
Midori-ku, Yokohama, 226-8501, Japan
| | - Tempei Shimizu
- Center for Biological Resources and Informatics, Tokyo Institute of Technology, 4259-B-62, Nagatsuta-cho,
Midori-ku, Yokohama, 226-8501, Japan
| | - Takahiro Kikawada
- National Institute of Agrobiological Sciences (NIAS), 1-2, Ohwashi, Tsukuba, 305-8634, Japan
| | - Takashi Okuda
- National Institute of Agrobiological Sciences (NIAS), 1-2, Ohwashi, Tsukuba, 305-8634, Japan
| | - Minoru Sakurai
- Center for Biological Resources and Informatics, Tokyo Institute of Technology, 4259-B-62, Nagatsuta-cho,
Midori-ku, Yokohama, 226-8501, Japan
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146
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Osakabe Y, Kajita S, Osakabe K. Genetic engineering of woody plants: current and future targets in a stressful environment. PHYSIOLOGIA PLANTARUM 2011; 142:105-117. [PMID: 21288247 DOI: 10.1111/j.1399-3054.2011.01451.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Abiotic stress is a major factor in limiting plant growth and productivity. Environmental degradation, such as drought and salinity stresses, will become more severe and widespread in the world. To overcome severe environmental stress, plant biotechnologies, such as genetic engineering in woody plants, need to be implemented. The adaptation of plants to environmental stress is controlled by cascades of molecular networks including cross-talk with other stress signaling mechanisms. The present review focuses on recent studies concerning genetic engineering in woody plants for the improvement of the abiotic stress responses. Furthermore, it highlights the recent advances in the understanding of molecular responses to stress. The review also summarizes the basis of a molecular mechanism for cell wall biosynthesis and the plant hormone responses to regulate tree growth and biomass in woody plants. This would facilitate better understanding of the control programs of biomass production under stressful conditions.
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Affiliation(s)
- Yuriko Osakabe
- Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
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147
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Mao X, Jia D, Li A, Zhang H, Tian S, Zhang X, Jia J, Jing R. Transgenic expression of TaMYB2A confers enhanced tolerance to multiple abiotic stresses in Arabidopsis. Funct Integr Genomics 2011; 11:445-65. [DOI: 10.1007/s10142-011-0218-3] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2010] [Revised: 02/22/2011] [Accepted: 02/23/2011] [Indexed: 11/29/2022]
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148
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Mishra PK, Bisht SC, Ruwari P, Selvakumar G, Joshi GK, Bisht JK, Bhatt JC, Gupta HS. Alleviation of cold stress in inoculated wheat (Triticum aestivum L.) seedlings with psychrotolerant Pseudomonads from NW Himalayas. Arch Microbiol 2011; 193:497-513. [PMID: 21442319 DOI: 10.1007/s00203-011-0693-x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 01/22/2011] [Accepted: 02/28/2011] [Indexed: 11/25/2022]
Abstract
Twelve psychrotolerant Pseudomonad strains were selected on the basis of various plant growth-promoting (PGP) activities at cold temperature (4°C). The effect of inoculation with Pseudomonad strains on cold alleviation and growth of wheat seedling at cold temperature (8°C) was investigated under greenhouse condition. Inoculation with Pseudomonad strains significantly enhanced root/shoot biomass and nutrients uptake as compared to non-bacterized control at 60 days of plant growth. Bacterization significantly improved the level of cellular metabolites like chlorophyll, anthocyanin, free proline, total phenolics, starch content, physiologically available iron, proteins, and amino acids that are sign of alleviation of cold stress in wheat plants. Increased relative water content, reduced membrane injury (electrolyte leakage), and Na(+)/K(+) ratio were also recorded in bacterized wheat plants. Electrolyte leakage and Na(+)/K(+) were found inversely proportional to plant growth at cold temperature. Statistical analysis of twenty-three measured parameters revealed that uninoculated control was under cold stress while eight bacterial strains were positively alleviating cold stress in wheat plants. Thus, the psychrotrophic Pseudomonad strains could effectively provide a promising solution to overcome cold stress, which is major factor hindering wheat productivity under cold climatic condition.
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Affiliation(s)
- Pankaj Kumar Mishra
- Vivekananda Institute of Hill Agriculture, Indian Council of Agricultural Research, Almora, Uttarakhand, India.
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149
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Balestrazzi A, Confalonieri M, Macovei A, Donà M, Carbonera D. Genotoxic stress and DNA repair in plants: emerging functions and tools for improving crop productivity. PLANT CELL REPORTS 2011; 30:287-95. [PMID: 21170715 DOI: 10.1007/s00299-010-0975-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Revised: 12/06/2010] [Accepted: 12/06/2010] [Indexed: 05/18/2023]
Abstract
Crop productivity is strictly related to genome stability, an essential requisite for optimal plant growth/development. Genotoxic agents (e.g., chemical agents, radiations) can cause both chemical and structural damage to DNA. In some cases, they severely affect the integrity of plant genome by inducing base oxidation, which interferes with the basal processes of replication and transcription, eventually leading to cell death. The cell response to oxidative stress includes several DNA repair pathways, which are activated to remove the damaged bases and other lesions. Information concerning DNA repair in plants is still limited, although results from gene profiling and mutant analysis suggest possible differences in repair mechanisms between plants and other eukaryotes. The present review focuses on the base- and nucleotide excision repair (BER, NER) pathways, which operate according to the most common DNA repair rule (excision of damaged bases and replacement by the correct nucleotide), highlighting the most recent findings in plants. An update on DNA repair in organelles, chloroplasts and mitochondria is also provided. Finally, it is generally acknowledged that DNA repair plays a critical role during seed imbibition, preserving seed vigor. Despite this, only a limited number of studies, described here, dedicated to seeds are currently available.
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Affiliation(s)
- Alma Balestrazzi
- Dipartimento di Genetica e Microbiologia, via Ferrata 1, 27100 Pavia, Italy.
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150
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Alam I, Kim KH, Sharmin SA, Kim YG, Lee BH. Advances in the molecular breeding of forage crops for abiotic stress tolerance. ACTA ACUST UNITED AC 2010. [DOI: 10.5010/jpb.2010.37.4.425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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