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Soares-Cavalcanti NM, Belarmino LC, Kido EA, Pandolfi V, Marcelino-Guimarães FC, Rodrigues FA, Pereira GAG, Benko-Iseppon AM. Overall picture of expressed Heat Shock Factors in Glycine max, Lotus japonicus and Medicago truncatula. Genet Mol Biol 2012; 35:247-59. [PMID: 22802710 PMCID: PMC3392877 DOI: 10.1590/s1415-47572012000200006] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Heat shock (HS) leads to the activation of molecular mechanisms, known as HS-response, that prevent damage and enhance survival under stress. Plants have a flexible and specialized network of Heat Shock Factors (HSFs), which are transcription factors that induce the expression of heat shock proteins. The present work aimed to identify and characterize the Glycine max HSF repertory in the Soybean Genome Project (GENOSOJA platform), comparing them with other legumes (Medicago truncatula and Lotus japonicus) in view of current knowledge of Arabidopsis thaliana. The HSF characterization in leguminous plants led to the identification of 25, 19 and 21 candidate ESTs in soybean, Lotus and Medicago, respectively. A search in the SuperSAGE libraries revealed 68 tags distributed in seven HSF gene types. From the total number of obtained tags, more than 70% were related to root tissues (water deficit stress libraries vs. controls), indicating their role in abiotic stress responses, since the root is the first tissue to sense and respond to abiotic stress. Moreover, as heat stress is related to the pressure of dryness, a higher HSF expression was expected at the water deficit libraries. On the other hand, expressive HSF candidates were obtained from the library inoculated with Asian Soybean Rust, inferring crosstalk among genes associated with abiotic and biotic stresses. Evolutionary relationships among sequences were consistent with different HSF classes and subclasses. Expression profiling indicated that regulation of specific genes is associated with the stage of plant development and also with stimuli from other abiotic stresses pointing to the maintenance of HSF expression at a basal level in soybean, favoring its activation under heat-stress conditions.
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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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102
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Salas-Muñoz S, Gómez-Anduro G, Delgado-Sánchez P, Rodríguez-Kessler M, Jiménez-Bremont JF. The Opuntia streptacantha OpsHSP18 gene confers salt and osmotic stress tolerance in Arabidopsis thaliana. Int J Mol Sci 2012; 13:10154-10175. [PMID: 22949853 PMCID: PMC3431851 DOI: 10.3390/ijms130810154] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 08/01/2012] [Accepted: 08/07/2012] [Indexed: 01/16/2023] Open
Abstract
Abiotic stress limits seed germination, plant growth, flowering and fruit quality, causing economic decrease. Small Heat Shock Proteins (sHSPs) are chaperons with roles in stress tolerance. Herein, we report the functional characterization of a cytosolic class CI sHSP (OpsHSP18) from Opuntia streptacantha during seed germination in Arabidopsis thaliana transgenic lines subjected to different stress and hormone treatments. The over-expression of the OpsHSP18 gene in A. thaliana increased the seed germination rate under salt (NaCl) and osmotic (glucose and mannitol) stress, and in ABA treatments, compared with WT. On the other hand, the over-expression of the OpsHSP18 gene enhanced tolerance to salt (150 mM NaCl) and osmotic (274 mM mannitol) stress in Arabidopsis seedlings treated during 14 and 21 days, respectively. These plants showed increased survival rates (52.00 and 73.33%, respectively) with respect to the WT (18.75 and 53.75%, respectively). Thus, our results show that OpsHSP18 gene might have an important role in abiotic stress tolerance, in particular in seed germination and survival rate of Arabidopsis plants under unfavorable conditions.
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Affiliation(s)
- Silvia Salas-Muñoz
- Division of Molecular Biology, Institute Potosino of Scientific and Technological Research, Camino a la Presa de San José 2055, P.O.B. 3-74, C.P. 78216, Tangamanga, San Luis Potosí, SLP, Mexico; E-Mail:
| | - Gracia Gómez-Anduro
- Agriculture in Dry Land Areas, The Northwest Centre of Biological Research, Mar Bermejo No. 195, Col. Playa Palo de Santa Rita, P.O.B. 128, C.P. 23090, La Paz, BCS, Mexico; E-Mail:
| | - Pablo Delgado-Sánchez
- Faculty of Agronomy, Universidad Autónoma de San Luis Potosí, Km. 14.5, Carretera San Luis Potosí-Matehuala, Soledad de Graciano Sánchez, P.O.B. 32, C.P. 78321, San Luis Potosí, SLP, Mexico; E-Mail:
| | - Margarita Rodríguez-Kessler
- Faculty of Sciences, Universidad Autónoma de San Luis Potosí, Salvador Nava s/n, C.P. 78290, Col Lomas, San Luis Potosí, SLP, Mexico; E-Mail:
| | - Juan Francisco Jiménez-Bremont
- Division of Molecular Biology, Institute Potosino of Scientific and Technological Research, Camino a la Presa de San José 2055, P.O.B. 3-74, C.P. 78216, Tangamanga, San Luis Potosí, SLP, Mexico; E-Mail:
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103
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Sun L, Liu Y, Kong X, Zhang D, Pan J, Zhou Y, Wang L, Li D, Yang X. ZmHSP16.9, a cytosolic class I small heat shock protein in maize (Zea mays), confers heat tolerance in transgenic tobacco. PLANT CELL REPORTS 2012; 31:1473-84. [PMID: 22534681 DOI: 10.1007/s00299-012-1262-8] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 02/15/2012] [Accepted: 04/02/2012] [Indexed: 05/21/2023]
Abstract
UNLABELLED Various organisms produce HSPs in response to high temperature and other stresses. The function of heat shock proteins, including small heat shock protein (sHSP), in stress tolerance is not fully explored. To improve our understanding of sHSPs, we isolated ZmHSP16.9 from maize. Sequence alignments and phylogenetic analysis reveal this to be a cytosolic class I sHSP. ZmHSP16.9 expressed in root, leaf and stem tissues under 40 °C treatment, and was up-regulated by heat stress and exogenous H₂O₂. Overexpression of ZmHSP16.9 in transgenic tobacco conferred tolerance to heat and oxidative stresses by increased seed germination rate, root length, and antioxidant enzyme activities compared with WT plants. These results support the positive role of ZmHSP16.9 in response to heat stress in plant. KEY MESSAGE The overexpression of ZmHSP16.9 enhanced tolerance to heat and oxidative stress in transgenic tobacco.
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Affiliation(s)
- Liping Sun
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, 61 Daizong Street, Tai'an 271018, Shandong, China
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104
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He LH, Chen JY, Kuang JF, Lu WJ. Expression of three sHSP genes involved in heat pretreatment-induced chilling tolerance in banana fruit. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2012; 92:1924-1930. [PMID: 22234735 DOI: 10.1002/jsfa.5562] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 11/20/2011] [Accepted: 11/22/2011] [Indexed: 05/31/2023]
Abstract
BACKGROUND Banana fruit is highly susceptible to chilling injury. In previous research it was shown that heat pretreatment of banana fruit at 38 °C for 3 days before storage at a chilling temperature of 8 °C for 12 days prevented increases in visible chilling injury index, electrolyte leakage and malondialdehyde content and also decreases in lightness and chroma, indicating that heat pretreatment could effectively alleviate chilling injury of banana fruit. However, little is known about the role of small heat shock proteins (sHSPs) in postharvest chilling tolerance of banana fruit. In the present study, three cytosolic sHSP expression profiles in peel and pulp tissues of banana fruit during heat pretreatment and subsequent chilled storage (8 °C) were investigated in relation to heat pretreatment-induced chilling tolerance. RESULTS Three full-length cDNAs of cytosolic sHSP genes, including two class I sHSP (CI sHSP) and one class II sHSP (CII sHSP) cDNAs, named Ma-CI sHSP1, Ma-CI sHSP2 and Ma-CII sHSP3 respectively, were isolated and characterised from harvested banana fruit. Accumulation of Ma-CI sHSP1 mRNA transcripts in peel and pulp tissues and Ma-CII sHSP3 mRNA transcripts in peel tissue increased during heat pretreatment. Expression of all three Ma-sHSP genes in peel and pulp tissues was induced during subsequent chilled storage. Furthermore, Ma-CI sHSP1 and Ma-CII sHSP3 mRNA transcripts in pulp tissue and Ma-CI sHSP2 mRNA transcripts in peel and pulp tissues were obviously enhanced by heat pretreatment at days 6 and 9 of subsequent chilled storage. CONCLUSION These results suggested that heat pretreatment enhanced the expression of Ma-sHSPs, which might be involved in heat pretreatment-induced chilling tolerance of banana fruit.
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Affiliation(s)
- Li-hong He
- College of Life Science, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
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105
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Lee KW, Choi GJ, Kim KY, Ji HJ, Park HS, Kim YG, Lee BH, Lee SH. Transgenic Expression of MsHsp23 Confers Enhanced Tolerance to Abiotic Stresses in Tall Fescue. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2012; 25:818-23. [PMID: 25049632 PMCID: PMC4093096 DOI: 10.5713/ajas.2012.12034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 03/29/2012] [Accepted: 03/07/2012] [Indexed: 12/14/2022]
Abstract
Tall fescue (Festuca arundinacea Schreb.) is an important cool season forage plant that is not well suited to extreme heat, salts, or heavy metals. To develop transgenic tall fescue plants with enhanced tolerance to abiotic stress, we introduced an alfalfa Hsp23 gene expression vector construct through Agrobacterium-mediated transformation. Integration and expression of the transgene were confirmed by polymerase chain reaction, northern blot, and western blot analyses. Under normal growth conditions, there was no significant difference in the growth of the transgenic plants and the non-transgenic controls. However, when exposed to various stresses such as salt or arsenic, transgenic plants showed a significantly lower accumulation of hydrogen peroxide and thiobarbituric acid reactive substances than control plants. The reduced accumulation of thiobarbituric acid reactive substances indicates that the transgenic plants possessed a more efficient reactive oxygen species-scavenging system. We speculate that the high levels of MsHsp23 proteins in the transgenic plants protect leaves from oxidative damage through chaperon and antioxidant activities. These results suggest that MsHsp23 confers abiotic stress tolerance in transgenic tall fescue and may be useful in developing stress tolerance in other crops.
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Affiliation(s)
| | | | | | | | | | - Yong-Goo Kim
- Division of Applied Life Science (BK21 Program), Gyeongsang National University, Jinju, 600-701,
Korea
| | - Byung Hyun Lee
- Division of Applied Life Science (BK21 Program), Gyeongsang National University, Jinju, 600-701,
Korea
| | - Sang-Hoon Lee
- Division of Applied Life Science (BK21 Program), Gyeongsang National University, Jinju, 600-701,
Korea
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106
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Bondino HG, Valle EM, Ten Have A. Evolution and functional diversification of the small heat shock protein/α-crystallin family in higher plants. PLANTA 2012; 235:1299-313. [PMID: 22210597 DOI: 10.1007/s00425-011-1575-9] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Accepted: 12/07/2011] [Indexed: 05/03/2023]
Abstract
Small heat shock proteins (sHSPs) are chaperones that play an important role in stress tolerance. They consist of an alpha-crystallin domain (ACD) flanked by N- and C-terminal regions. However, not all proteins that contain an ACD, hereafter referred to as ACD proteins, are sHSPs because certain ACD proteins are known to have different functions. Furthermore, since not all ACD proteins have been identified yet, current classifications are incomplete. A total of 17 complete plant proteomes were screened for the presence of ACD proteins by HMMER profiling and the identified ACD protein sequences were classified by maximum likelihood phylogeny. Differences among and within groups were analysed, and levels of functional constraint were determined. There are 29 different classes of ACD proteins, eight of which contain classical sHSPs and five likely chaperones. The other classes contain proteins with uncharacterised or poorly characterised functions. N- and C-terminal sequences are conserved within the phylogenetic classes. Phylogenetics suggests a single duplication of the CI sHSP ancestor that occurred prior to the speciation of mono- and dicotyledons. This was followed by a number of more recent duplications that resulted in the presence of many paralogues. The results suggest that N- and C-terminal sequences of sHSPs play a role in class-specific functionality and that non-sHSP ACD proteins have conserved but unexplored functions, which are mainly determined by subsequences other than that of the ACD.
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Affiliation(s)
- Hernán Gabriel Bondino
- Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Biológicas-IIB-CONICET-UNMdP, Universidad Nacional de Mar del Plata, CC 1245, 7600 Mar del Plata, Argentina
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107
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Cao F, Cheng H, Cheng S, Li L, Xu F, Yu W, Yuan H. Expression of selected Ginkgo biloba heat shock protein genes after cold treatment could be induced by other abiotic stress. Int J Mol Sci 2012; 13:5768-5788. [PMID: 22754330 PMCID: PMC3382825 DOI: 10.3390/ijms13055768] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 04/26/2012] [Accepted: 05/02/2012] [Indexed: 11/16/2022] Open
Abstract
Heat shock proteins (HSPs) play various stress-protective roles in plants. In this study, three HSP genes were isolated from a suppression subtractive hybridization (SSH) cDNA library of Ginkgo biloba leaves treated with cold stress. Based on the molecular weight, the three genes were designated GbHSP16.8, GbHSP17 and GbHSP70. The full length of the three genes were predicted to encode three polypeptide chains containing 149 amino acids (Aa), 152 Aa, and 657 Aa, and their corresponding molecular weights were predicted as follows: 16.67 kDa, 17.39 kDa, and 71.81 kDa respectively. The three genes exhibited distinctive expression patterns in different organs or development stages. GbHSP16.8 and GbHSP70 showed high expression levels in leaves and a low level in gynoecia, GbHSP17 showed a higher transcription in stamens and lower level in fruit. This result indicates that GbHSP16.8 and GbHSP70 may play important roles in Ginkgo leaf development and photosynthesis, and GbHSP17 may play a positive role in pollen maturation. All three GbHSPs were up-regulated under cold stress, whereas extreme heat stress only caused up-regulation of GbHSP70, UV-B treatment resulted in up-regulation of GbHSP16.8 and GbHSP17, wounding treatment resulted in up-regulation of GbHSP16.8 and GbHSP70, and abscisic acid (ABA) treatment caused up-regulation of GbHSP70 primarily.
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Affiliation(s)
- Fuliang Cao
- Economic Forest Germplasm Improvement and Comprehensive Utilization of Resources of Hubei Key Laboratory, Huanggang Normal University, Huanggang 438000, China; E-Mails: (H.C.); (L.L.); (F.X.)
- College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (F.C.); (S.C.); Tel./Fax: +86-713-8833599 (S.C.)
| | - Hua Cheng
- Economic Forest Germplasm Improvement and Comprehensive Utilization of Resources of Hubei Key Laboratory, Huanggang Normal University, Huanggang 438000, China; E-Mails: (H.C.); (L.L.); (F.X.)
- College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China; E-Mail:
- College of Chemistry and life science, Huanggang Normal University, Huanggang 438000, China; E-Mail:
| | - Shuiyuan Cheng
- Economic Forest Germplasm Improvement and Comprehensive Utilization of Resources of Hubei Key Laboratory, Huanggang Normal University, Huanggang 438000, China; E-Mails: (H.C.); (L.L.); (F.X.)
- College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China; E-Mail:
- College of Chemistry and life science, Huanggang Normal University, Huanggang 438000, China; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (F.C.); (S.C.); Tel./Fax: +86-713-8833599 (S.C.)
| | - Linling Li
- Economic Forest Germplasm Improvement and Comprehensive Utilization of Resources of Hubei Key Laboratory, Huanggang Normal University, Huanggang 438000, China; E-Mails: (H.C.); (L.L.); (F.X.)
- College of Chemistry and life science, Huanggang Normal University, Huanggang 438000, China; E-Mail:
| | - Feng Xu
- Economic Forest Germplasm Improvement and Comprehensive Utilization of Resources of Hubei Key Laboratory, Huanggang Normal University, Huanggang 438000, China; E-Mails: (H.C.); (L.L.); (F.X.)
| | - Wanwen Yu
- College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China; E-Mail:
| | - Honghui Yuan
- College of Chemistry and life science, Huanggang Normal University, Huanggang 438000, China; E-Mail:
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108
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Zou J, Liu C, Liu A, Zou D, Chen X. Overexpression of OsHsp17.0 and OsHsp23.7 enhances drought and salt tolerance in rice. JOURNAL OF PLANT PHYSIOLOGY 2012; 169:628-35. [PMID: 22321692 DOI: 10.1016/j.jplph.2011.12.014] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 12/15/2011] [Accepted: 12/15/2011] [Indexed: 05/02/2023]
Abstract
Heat shock proteins (Hsps) play an important role in plant stress tolerance. We previously reported that expression of OsHsp17.0 and OsHsp23.7 could be enhanced by heat shock treatment and/or other abiotic stresses. In this paper, stress tolerance assays of transgenic rice plants overexpressing OsHsp17.0 and OsHsp23.7 have been carried out. Both OsHsp17.0-OE and OsHsp23.7-OE transgenic lines demonstrated higher germination ability compared to wild-type (WT) plants when subjected to mannitol and NaCl. Phenotypic analysis showed that transgenic rice lines displayed a higher tolerance to drought and salt stress compared to WT plants. In addition, transgenic rice lines showed significantly lower REC, lower MDA content and higher free proline content than WT under drought and salt stresses. These results suggest that OsHsp17.0 and OsHsp23.7 play an important role in rice acclimation to salt and drought stresses and are useful for engineering drought and salt tolerance rice.
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Affiliation(s)
- Jie Zou
- Hunan Provincial Key Laboratory for Germplasm Innovation and Utilization of Crop, Hunan Agricultural University, Changsha 410128, China
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109
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Zerzucha P, Boguszewska D, Zagdańska B, Walczak B. Non-parametric multivariate analysis of variance in the proteomic response of potato to drought stress. Anal Chim Acta 2012; 719:1-7. [PMID: 22340524 DOI: 10.1016/j.aca.2011.12.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 12/17/2011] [Accepted: 12/21/2011] [Indexed: 11/15/2022]
Abstract
Spot detection is a mandatory step in all available software packages dedicated to the analysis of 2D gel images. As the majority of spots do not represent individual proteins, spot detection can obscure the results of data analysis significantly. This problem can be overcome by a pixel-level analysis of 2D images. Differences between the spot and the pixel-level approaches are demonstrated by variance analysis for real data sets (part of a larger research project initiated to investigate the molecular mechanism of the response of the potato to drought stress). As the method of choice for the analysis of data variation, the non-parametric MANOVA was chosen. NP-MANOVA is recommended as a flexible and very fast tool for the evaluation of the statistical significance of the factor(s) studied.
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Affiliation(s)
- Piotr Zerzucha
- Institute of Chemistry, The University of Silesia, Szkolna Street 9, 40-006 Katowice, Poland
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110
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Expression profile analysis of 9 heat shock protein genes throughout the life cycle and under abiotic stress in rice. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s11434-011-4863-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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111
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Omar SA, Fu QT, Chen MS, Wang GJ, Song SQ, Elsheery NI, Xu ZF. Identification and expression analysis of two small heat shock protein cDNAs from developing seeds of biodiesel feedstock plant Jatropha curcas. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2011; 181:632-7. [PMID: 21958704 DOI: 10.1016/j.plantsci.2011.03.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Revised: 02/25/2011] [Accepted: 03/03/2011] [Indexed: 05/25/2023]
Abstract
Plant small heat shock proteins (sHSPs) are known to be important for environmental stress tolerance and involved in various developmental processes. In this study, two full-length cDNAs encoding sHSPs, designated JcHSP-1 and JcHSP-2, were identified and characterized from developing seeds of a promising biodiesel feedstock plant Jatropha curcas by expressed sequence tag (EST) sequencing of embryo cDNA libraries and rapid amplification of cDNA ends (RACE). JcHSP-1 and JcHSP-2 contained open-reading frames encoding sHSPs of 219 and 157 amino acids, with predicted molecular weights of 24.42kDa and 18.02kDa, respectively. Sequence alignment indicated that both JcHSP-1 and JcHSP-2 shared high similarity with other plant sHSPs. Real-time quantitative RT-PCR analysis showed that the transcriptional level of both JcHSP-1 and JcHSP-2 increased along with natural dehydration process during seed development. A sharp increase of JcHSP-2 transcripts occurred in response to water content dropping from 42% in mature seeds to 12% in dry seeds. Western blot analysis revealed that the accumulation profile of two cross-reacting proteins, whose molecular weight corresponding to the calculated size of JcHSP-1 and JcHSP-2, respectively, was well consistent with the mRNA expression pattern of JcHSP-1 and JcHSP-2 in jatropha seeds during maturation and natural dehydration. These results indicated that both JcHSPs might play an important role in cell protection and seed development during maturation of J. curcas seeds.
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Affiliation(s)
- Samar A Omar
- Laboratory of Molecular Breeding of Energy Plants, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China
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112
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Mu C, Wang S, Zhang S, Pan J, Chen N, Li X, Wang Z, Liu H. Small heat shock protein LimHSP16.45 protects pollen mother cells and tapetal cells against extreme temperatures during late zygotene to pachytene stages of meiotic prophase I in David Lily. PLANT CELL REPORTS 2011; 30:1981-9. [PMID: 21678060 DOI: 10.1007/s00299-011-1106-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 06/02/2011] [Accepted: 06/03/2011] [Indexed: 05/08/2023]
Abstract
Plant meiotic prophase I is a complicated process involving the late zygotene and pachytene stages, both crucial for completing synapsis and recombination. Using David Lily (Lilium davidii var. Willmottiae) as our research material, we performed suppression subtractive hybridization to construct EST library of anthers at various stages of development by the pollen mother cells. From this library, we identified small heat shock protein LimHSP16.45 was highly expressed during the late zygotene to pachytene stages. Our results also showed that LimHSP16.45 was almost specifically expressed in the anther compared with the root, stem, or leaf, and in situ expression of LimHSP16.45 mRNAs showed strong signals in the pollen mother cells and tapetal cells. LimHSP16.45 could be induced by heat and cold in lily anthers, and its ectopic expression enhanced the viability of E. coli cells under both high and low temperatures. In vitro, it acted as molecular chaperone and could help luciferase refolding after heat shock stress. All of these data suggest that LimHSP16.45, working as molecular chaperone, possibly protects pollen mother cells and tapetal cells against extreme temperatures during late zygotene to pachytene stages of meiotic prophase I in David Lily.
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Affiliation(s)
- Changjun Mu
- Institute of Cell Biology, School of Life Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
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113
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Kim DH, Xu ZY, Na YJ, Yoo YJ, Lee J, Sohn EJ, Hwang I. Small heat shock protein Hsp17.8 functions as an AKR2A cofactor in the targeting of chloroplast outer membrane proteins in Arabidopsis. PLANT PHYSIOLOGY 2011; 157:132-46. [PMID: 21730198 PMCID: PMC3165864 DOI: 10.1104/pp.111.178681] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 07/03/2011] [Indexed: 05/20/2023]
Abstract
Plastid proteins that are encoded by the nuclear genome and synthesized in the cytosol undergo posttranslational targeting to plastids. Ankyrin repeat protein 2A (AKR2A) and AKR2B were recently shown to be involved in the targeting of proteins to the plastid outer envelope. However, it remains unknown whether other factors are involved in this process. In this study, we investigated a factor involved in AKR2A-mediated protein targeting to chloroplasts in Arabidopsis (Arabidopsis thaliana). Hsp17.8, a member of the class I (CI) cytosolic small heat shock proteins (sHsps), was identified in interactions with AKR2A. The interaction between Hsp17.8 and AKR2A was further confirmed by coimmunoprecipitation experiments. The carboxyl-terminal ankyrin repeat domain of AKR2A was responsible for AKR2A binding to Hsp17.8. Other CI cytosolic sHsps also interact with AKR2A to varying degrees. Additionally, Hsp17.8 binds to chloroplasts in vitro and enhances AKR2A binding to chloroplasts. HSP17.8 was expressed under normal growth conditions, and its expression increased after heat shock. Hsp17.8 exists as a dimer under normal physiological conditions, and it is converted to high oligomeric complexes, ranging from 240 kD to greater than 480 kD, after heat shock. High levels of Hsp17.8 together with AKR2A resulted in increased plastid targeting of Outer Envelope Protein7 (OEP7), a plastid outer envelope protein expressed as a green fluorescent protein fusion protein. In contrast, artificial microRNA suppression of HSP17.8 and closely related CI cytosolic sHSPs in protoplasts resulted in a reduction of OEP7:green fluorescent protein targeting to plastids. Based on these data, we propose that Hsp17.8 functions as an AKR2A cofactor in targeting membrane proteins to plastid outer membranes under normal physiological conditions.
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114
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Reguera M, Peleg Z, Blumwald E. Targeting metabolic pathways for genetic engineering abiotic stress-tolerance in crops. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2011; 1819:186-94. [PMID: 21867784 DOI: 10.1016/j.bbagrm.2011.08.005] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 08/03/2011] [Accepted: 08/04/2011] [Indexed: 11/27/2022]
Abstract
Abiotic stress conditions are the major limitations in modern agriculture. Although many genes associated with plant response(s) to abiotic stresses have been indentified and used to generate stress tolerant plants, the success in producing stress-tolerant crops is limited. New technologies are providing opportunities to generate stress tolerant crops. Biotechnological approaches that emphasize the development of transgenic crops under conditions that mimic the field situation and focus on the plant reproductive stage will significantly improve the opportunities of producing stress tolerant crops. Here, we highlight recent advances and discuss the limitations that hinder the fast integration of transgenic crops into agriculture and suggest possible research directions. This article is part of a Special Issue entitled: Plant gene regulation in response to abiotic stress.
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Affiliation(s)
- Maria Reguera
- Department of Plant Sci.s, University of California, Davis, CA 95616, USA
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115
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Hadiarto T, Tran LSP. Progress studies of drought-responsive genes in rice. PLANT CELL REPORTS 2011; 30:297-310. [PMID: 21132431 DOI: 10.1007/s00299-010-0956-z] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 11/22/2010] [Accepted: 11/22/2010] [Indexed: 05/04/2023]
Abstract
Rice (Oryza sativa L.), one of the most agronomically important crops, supplies staple food for more than half of the world's population, especially those living in developing countries. The intensively increasing world population has put a great burden on rice production. Drought as one of the major limiting factors for rice productivity has challenged researchers to improve both the water management system and rice characteristics. Biotechnology has assisted researchers to identify genes that are responsive toward drought. This review consolidates the recent studies that expose a number of drought-responsive genes in rice, which are potential candidates for development of improved drought-tolerant transgenic rice cultivars. In addition, examples are provided of how various drought-responsive genes, such as transcription factor and protein kinase encoding genes, were explored to engineer rice plants for enhanced drought tolerance using transgenic approach. Furthermore, the involvement of various phytohormones in regulation of drought response as well as the complexity of drought-responsive networks, which is indicated by the crosstalks with other stress-responsive networks such as cold and salt stresses, will be discussed. It is hoped that by understanding how rice responds to drought, crop performance can be stabilized and protected under water deficit conditions.
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Affiliation(s)
- Toto Hadiarto
- Indonesian Center for Agricultural Biotechnology and Genetic Resources Research and Development, Jl Tentara Pelajar 3a, Bogor, Indonesia
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116
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Zhang M, Li G, Huang W, Bi T, Chen G, Tang Z, Su W, Sun W. Proteomic study of Carissa spinarum
in response to combined heat and drought stress. Proteomics 2010; 10:3117-29. [DOI: 10.1002/pmic.200900637] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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117
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Zhang S, Chen F, Peng S, Ma W, Korpelainen H, Li C. Comparative physiological, ultrastructural and proteomic analyses reveal sexual differences in the responses of Populus cathayana
under drought stress. Proteomics 2010; 10:2661-77. [DOI: 10.1002/pmic.200900650] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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118
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Yang S, Vanderbeld B, Wan J, Huang Y. Narrowing down the targets: towards successful genetic engineering of drought-tolerant crops. MOLECULAR PLANT 2010; 3:469-90. [PMID: 20507936 DOI: 10.1093/mp/ssq016] [Citation(s) in RCA: 190] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Drought is the most important environmental stress affecting agriculture worldwide. Exploiting yield potential and maintaining yield stability of crops in water-limited environments are urgent tasks that must be undertaken in order to guarantee food supply for the increasing world population. Tremendous efforts have been devoted to identifying key regulators in plant drought response through genetic, molecular, and biochemical studies using, in most cases, the model species Arabidopsis thaliana. However, only a small portion of these regulators have been explored as potential candidate genes for their application in the improvement of drought tolerance in crops. Based on biological functions, these genes can be classified into the following three categories: (1) stress-responsive transcriptional regulation (e.g. DREB1, AREB, NF-YB); (2) post-transcriptional RNA or protein modifications such as phosphorylation/dephosphorylation (e.g. SnRK2, ABI1) and farnesylation (e.g. ERA1); and (3) osomoprotectant metabolism or molecular chaperones (e.g. CspB). While continuing down the path to discovery of new target genes, serious efforts are also focused on fine-tuning the expression of the known candidate genes for stress tolerance in specific temporal and spatial patterns to avoid negative effects in plant growth and development. These efforts are starting to bear fruit by showing yield improvements in several crops under a variety of water-deprivation conditions. As most such evaluations have been performed under controlled growth environments, a gap still remains between early success in the laboratory and the application of these techniques to the elite cultivars of staple crops in the field. Nevertheless, significant progress has been made in the identification of signaling pathways and master regulators for drought tolerance. The knowledge acquired will facilitate the genetic engineering of single or multiple targets and quantitative trait loci in key crops to create commercial-grade cultivars with high-yielding potential under both optimal and suboptimal conditions.
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Affiliation(s)
- Shujun Yang
- Performance Plants Inc., 700 Gardiners Road, Kingston, Ontario, K7M 3X9, Canada
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119
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Azooz M, Youssef M. Evaluation of Heat Shock and Salicylic Acid Treatments as Inducers of Drought Stress Tolerance in Hassawi Wheat. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/ajpp.2010.56.70] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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120
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121
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Sarkar NK, Kim YK, Grover A. Rice sHsp genes: genomic organization and expression profiling under stress and development. BMC Genomics 2009; 10:393. [PMID: 19703271 PMCID: PMC2746236 DOI: 10.1186/1471-2164-10-393] [Citation(s) in RCA: 169] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Accepted: 08/24/2009] [Indexed: 12/29/2022] Open
Abstract
Background Heat shock proteins (Hsps) constitute an important component in the heat shock response of all living systems. Among the various plant Hsps (i.e. Hsp100, Hsp90, Hsp70 and Hsp20), Hsp20 or small Hsps (sHsps) are expressed in maximal amounts under high temperature stress. The characteristic feature of the sHsps is the presence of α-crystallin domain (ACD) at the C-terminus. sHsps cooperate with Hsp100/Hsp70 and co-chaperones in ATP-dependent manner in preventing aggregation of cellular proteins and in their subsequent refolding. Database search was performed to investigate the sHsp gene family across rice genome sequence followed by comprehensive expression analysis of these genes. Results We identified 40 α-crystallin domain containing genes in rice. Phylogenetic analysis showed that 23 out of these 40 genes constitute sHsps. The additional 17 genes containing ACD clustered with Acd proteins of Arabidopsis. Detailed scrutiny of 23 sHsp sequences enabled us to categorize these proteins in a revised scheme of classification constituting of 16 cytoplasmic/nuclear, 2 ER, 3 mitochondrial, 1 plastid and 1 peroxisomal genes. In the new classification proposed herein nucleo-cytoplasmic class of sHsps with 9 subfamilies is more complex in rice than in Arabidopsis. Strikingly, 17 of 23 rice sHsp genes were noted to be intronless. Expression analysis based on microarray and RT-PCR showed that 19 sHsp genes were upregulated by high temperature stress. Besides heat stress, expression of sHsp genes was up or downregulated by other abiotic and biotic stresses. In addition to stress regulation, various sHsp genes were differentially upregulated at different developmental stages of the rice plant. Majority of sHsp genes were expressed in seed. Conclusion We identified twenty three sHsp genes and seventeen Acd genes in rice. Three nucleocytoplasmic sHsp genes were found only in monocots. Analysis of expression profiling of sHsp genes revealed that these genes are differentially expressed under stress and at different stages in the life cycle of rice plant.
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Affiliation(s)
- Neelam K Sarkar
- Department of Plant Molecular Biology, University of Delhi South Campus, N Delhi 110021, India.
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122
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Jiang C, Xu J, Zhang H, Zhang X, Shi J, Li M, Ming F. A cytosolic class I small heat shock protein, RcHSP17.8, of Rosa chinensis confers resistance to a variety of stresses to Escherichia coli, yeast and Arabidopsis thaliana. PLANT, CELL & ENVIRONMENT 2009; 32:1046-59. [PMID: 19422616 DOI: 10.1111/j.1365-3040.2009.01987.x] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Among the heat shock proteins (HSPs) of higher plants, those belonging to the small HSP (sHSP) family remain the least characterized in functional terms. To improve our understanding of sHSPs, we have characterized RcHSP17.8 from Rosa chinensis. Sequence alignments and phylogenetic analysis reveal this to be a cytosolic class I sHSP. RcHSP17.8 expression in R. chinensis was induced by heat, cold, salt, drought, osmotic and oxidative stresses. Recombinant RcHSP17.8 was overexpressed in Escherichia coli and yeast to study its possible function under stress conditions. The recombinant E. coli and yeast cells that accumulated RcHSP17.8 showed improved viability under thermal, salt and oxidative stress conditions compared with control cultures. We also produced transgenic Arabidopsis thaliana that constitutively expressed RcHSP17.8. These plants exhibited increased tolerance to heat, salt, osmotic and drought stresses. These results suggest that R. chinensis cytosolic class I sHSP (RcHSP17.8) has the ability to confer stress resistance not only to E. coli and yeast but also to plants grown under a wide variety of unfavorable environmental conditions.
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Affiliation(s)
- Changhua Jiang
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, 220 Handan Road, Shanghai 200433, China
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123
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Ouyang Y, Chen J, Xie W, Wang L, Zhang Q. Comprehensive sequence and expression profile analysis of Hsp20 gene family in rice. PLANT MOLECULAR BIOLOGY 2009; 70:341-57. [PMID: 19277876 DOI: 10.1007/s11103-009-9477-y] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2008] [Accepted: 02/23/2009] [Indexed: 05/08/2023]
Abstract
The Hsp20 genes represent the most abundant small heat shock proteins (sHSPs) in plants. Hsp20 gene family has been shown to be involved in preventing heat shock and promoting resistance to environmental stress factors, but very little is known about this gene family in rice. Here, we report the identification and characterization of 39 OsHsp20 genes in rice, describing the gene structure, gene expression, genome localization, and phylogenetic relationship of each member. We have used RT-PCR to perform a characterization of the normal and heat shock-induced expression of selective OsHsp20 genes. A genome-wide microarray based gene expression analysis involving 25 stages of vegetative and reproductive development in three rice cultivars has revealed that 36 OsHsp20 genes were expressed in at least one of the experimental stages studied. Among these, transcripts of OsHsp20 were accumulated differentially during vegetative and reproductive developmental stages and preferentially down-regulated in Shanyou 63. In addition, OsHsp20 genes were identified as showing prominent heterosis in family-level expression. Our results suggest that the expression patterns of the OsHsp20 genes are diversified not only in developmental stages but also in variety level.
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Affiliation(s)
- Yidan Ouyang
- National Key Laboratory of Crop Genetic Improvement, National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, China.
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124
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Zou J, Liu A, Chen X, Zhou X, Gao G, Wang W, Zhang X. Expression analysis of nine rice heat shock protein genes under abiotic stresses and ABA treatment. JOURNAL OF PLANT PHYSIOLOGY 2009; 166:851-61. [PMID: 19135278 DOI: 10.1016/j.jplph.2008.11.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2008] [Revised: 11/04/2008] [Accepted: 11/04/2008] [Indexed: 05/03/2023]
Abstract
Expression profiles of nine rice heat shock protein genes (OsHSPs) were analyzed by semi-quantitative reverse transcriptase polymerase chain reaction (RT-PCR). The nine genes exhibited distinctive expression in different organs. Expression of nine OsHSP genes was affected differentially by abiotic stresses and abscisic acid (ABA). All nine OsHSP genes were induced strongly by heat shock treatment, whereas none of them were induced by cold. The transcripts of OsHSP80.2, OsHSP71.1 and OsHSP23.7 were increased during salt tress treatment. Expression of OsHSP80.2 and OsHSP24.1 genes were enhanced while treated with 10% PEG. Only OsHSP71.1 was induced by ABA while OsHSP24.1 was suppressed by ABA. These observations imply that the nine OsHSP genes may play different roles in plant development and abiotic stress responses.
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Affiliation(s)
- Jie Zou
- Crop Gene Engineering Key Laboratory of Hunan Province, Hunan Agricultural University, Changsha 410128, China; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
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125
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Lin WC, Linda Chang PF. Approaches for Acquired Tolerance to Abiotic Stress of Economically Important Crops. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2009. [DOI: 10.1201/9781420077070.ch5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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126
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Hu W, Hu G, Han B. Genome-wide survey and expression profiling of heat shock proteins and heat shock factors revealed overlapped and stress specific response under abiotic stresses in rice. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2009; 176:583-90. [PMID: 26493149 DOI: 10.1016/j.plantsci.2009.01.016] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2008] [Revised: 01/12/2009] [Accepted: 01/28/2009] [Indexed: 05/20/2023]
Abstract
Heat shock proteins (Hsps) are molecular chaperons, which function in protein folding and assembly, protein intracellular localization and secretion, and degradation of misfolded and truncated proteins. Heat shock factors (Hsfs) are the transcriptional activators of Hsps. It has been reported that Hsps and Hsfs are widely involved in response to various abiotic stresses such as heat, drought, salinity and cold. To elucidate the function and regulation of rice Hsp and Hsf genes, we examined a global expression profiling with heat stressed rice seedling, and then compared our results with the previous rice data under cold, drought and salt stresses. The comparison revealed that, while most Hsfs and Hsps had highly similar and overlapped response and regulation patterns under different stresses, some of those genes showed significantly specific response to distinct stress. We also found that heat-responsive gene profiling differed largely from those under cold/drought/salt stresses, and that drought treatment was more effective to up-regulate Hsf expression in rice than in Arabidopsis. Overall, our data suggests that Hsps and Hsfs might be important elements in cross-talk of different stress signal transduction networks.
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Affiliation(s)
- Wenhuo Hu
- National Center for Gene Research and Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 500 Caobao Road, Shanghai 200233, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
| | - Guocheng Hu
- National Center for Gene Research and Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 500 Caobao Road, Shanghai 200233, China; State Key Lab of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou 30016, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
| | - Bin Han
- National Center for Gene Research and Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 500 Caobao Road, Shanghai 200233, China.
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127
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Mullet J. Traits and Genes for Plant Drought Tolerance. MOLECULAR GENETIC APPROACHES TO MAIZE IMPROVEMENT 2008. [DOI: 10.1007/978-3-540-68922-5_5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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