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Qiao ZW, Wang DR, Wang X, You CX, Wang XF. Genome-wide identification and stress response analysis of cyclophilin gene family in apple (Malus × domestica). BMC Genomics 2022; 23:806. [PMID: 36474166 PMCID: PMC9727951 DOI: 10.1186/s12864-022-08976-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 10/29/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Cyclophilin (CYP) belongs to the immunophilin family and has peptidyl-prolyl cis-trans isomerase (PPIase) activity, which catalyzes the cis-trans isomerization process of proline residues. CYPs widely exist in eukaryotes and prokaryotes, and contain a conserved cyclophilin-like domain (CLD). Plant cyclophilins are widely involved in a range of biological processes including stress response, metabolic regulation, and growth and development. RESULT In this study, 30 cyclophilin genes on 15 chromosomes were identified from the 'Golden Delicious' apple (M. domestica) genome. Phylogenetic analysis showed that the cyclophilin family genes can be divided into three clades in Malus. Collinear analysis showed that ten gene pairs were the result of segmental duplication. Analysis of gene and protein structure further supported the phylogenetic tree and collinearity analysis. The expression of MdCYPs in different organs was higher in leaves, flowers, and fruits. Ten and eight CYPs responded to drought and salt stress, respectively. MdCYP16, a nuclear-localized MD CYP, was screened from the intersection of the two expression profiling datasets and was highly sensitive to drought and salt stress. GUS staining of transgenic Arabidopsis indicated that MdCYP16 may be involved in the regulation of abiotic stress. CONCLUSION This study systematically analyzed members of the apple cyclophilin family and confirmed the involvement of MdCYP16 as a nuclear-localized MD cyclophilin that acts in response to salt and drought stress in apple. Our work identifies members of the apple cyclophilin gene family, and provides an important theoretical basis for in-depth study of cyclophilin function. Additionally, the analysis provides candidate genes that may be involved in stress response in apple.
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Affiliation(s)
- Zhi-Wen Qiao
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Da-Ru Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Xun Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Chun-Xiang You
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
| | - Xiao-Fei Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
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Kiełbowicz-Matuk A, Grądzka K, Biegańska M, Talar U, Czarnecka J, Rorat T. The StBBX24 protein affects the floral induction and mediates salt tolerance in Solanum tuberosum. FRONTIERS IN PLANT SCIENCE 2022; 13:965098. [PMID: 36160990 PMCID: PMC9490078 DOI: 10.3389/fpls.2022.965098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/10/2022] [Indexed: 06/16/2023]
Abstract
The transition from vegetative growth to reproductive development is a critical developmental switch in flowering plants to ensure a successful life cycle. However, while the genes controlling flowering are well-known in model plants, they are less well-understood in crops. In this work, we generated potato lines both silenced and overexpressed for the expression of StBBX24, a clock-controlled gene encoding a B-box protein located in the cytosol and nuclear chromatin fraction. We revealed that Solanum tuberosum lines silenced for StBBX24 expression displayed much earlier flowering than wild-type plants. Conversely, plants overexpressing StBBX24 mostly did not produce flower buds other than wild-type plants. In addition, RT-qPCR analyses of transgenic silenced lines revealed substantial modifications in the expression of genes functioning in flowering. Furthermore, S. tuberosum lines silenced for StBBX24 expression displayed susceptibility to high salinity with a lower capacity of the antioxidant system and strongly decreased expression of genes encoding Na+ transporters that mediate salt tolerance, contrary to the plants with StBBX24 overexpression. Altogether, these data reveal that StBBX24 participates in potato flowering repression and is involved in salt stress response.
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Affiliation(s)
- Agnieszka Kiełbowicz-Matuk
- Department of Regulation of Gene Expression, Institute of Plant Genetics, Polish Academy of Sciences, Poznan, Poland
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Conti V, Cantini C, Romi M, Cesare MM, Parrotta L, Del Duca S, Cai G. Distinct Tomato Cultivars Are Characterized by a Differential Pattern of Biochemical Responses to Drought Stress. Int J Mol Sci 2022; 23:ijms23105412. [PMID: 35628226 PMCID: PMC9141555 DOI: 10.3390/ijms23105412] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/28/2022] [Accepted: 05/10/2022] [Indexed: 02/04/2023] Open
Abstract
Future climate scenarios suggest that crop plants will experience environmental changes capable of affecting their productivity. Among the most harmful environmental stresses is drought, defined as a total or partial lack of water availability. It is essential to study and understand both the damage caused by drought on crop plants and the mechanisms implemented to tolerate the stress. In this study, we focused on four cultivars of tomato, an economically important crop in the Mediterranean basin. We investigated the biochemical mechanisms of plant defense against drought by focusing on proteins specifically involved in this stress, such as osmotin, dehydrin, and aquaporin, and on proteins involved in the general stress response, such as HSP70 and cyclophilins. Since sugars are also known to act as osmoprotectants in plant cells, proteins involved in sugar metabolism (such as RuBisCO and sucrose synthase) were also analyzed. The results show crucial differences in biochemical behavior among the selected cultivars and highlight that the most tolerant tomato cultivars adopt quite specific biochemical strategies such as different accumulations of aquaporins and osmotins. The data set also suggests that RuBisCO isoforms and aquaporins can be used as markers of tolerance/susceptibility to drought stress and be used to select tomato cultivars within breeding programs.
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Affiliation(s)
- Veronica Conti
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (M.R.); (M.M.C.); (G.C.)
- Correspondence: ; Tel.: +39-0577-232392
| | - Claudio Cantini
- National Research Council of Italy, Institute for Bioeconomy (CNR-IBE), 58022 Follonica, Italy;
| | - Marco Romi
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (M.R.); (M.M.C.); (G.C.)
| | - Maria Michela Cesare
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (M.R.); (M.M.C.); (G.C.)
| | - Luigi Parrotta
- Department of Biological, Geological and Environmental Sciences, University of Bologna, 40126 Bologna, Italy; (L.P.); (S.D.D.)
- Interdepartmental Centre for Agri-Food Industrial Research, University of Bologna, 47521 Cesena, Italy
| | - Stefano Del Duca
- Department of Biological, Geological and Environmental Sciences, University of Bologna, 40126 Bologna, Italy; (L.P.); (S.D.D.)
- Interdepartmental Centre for Agri-Food Industrial Research, University of Bologna, 47521 Cesena, Italy
| | - Giampiero Cai
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (M.R.); (M.M.C.); (G.C.)
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Parrotta L, Aloisi I, Suanno C, Faleri C, Kiełbowicz-Matuk A, Bini L, Cai G, Del Duca S. A low molecular-weight cyclophilin localizes in different cell compartments of Pyrus communis pollen and is released in vitro under Ca 2+ depletion. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 144:197-206. [PMID: 31585398 DOI: 10.1016/j.plaphy.2019.09.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/26/2019] [Accepted: 09/26/2019] [Indexed: 06/10/2023]
Abstract
Cyclophilins (CyPs) are ubiquitous proteins involved in a wide variety of processes including protein maturation and trafficking, receptor complex stabilization, apoptosis, receptor signaling, RNA processing, and spliceosome assembly. The ubiquitous presence is justified by their peptidyl-prolyl cis-trans isomerase (PPIase) activity, catalyzing the rotation of X-Pro peptide bonds from a cis to a trans conformation, a critical rate-limiting step in protein folding, as over 90% of proteins contain trans prolyl imide bonds. In Arabidopsis 35 CyPs involved in plant development have been reported, showing different subcellular localizations and tissue- and stage-specific expression. In the present work, we focused on the localization of CyPs in pear (Pyrus communis) pollen, a model system for studies on pollen tube elongation and on pollen-pistil self-incompatibility response. Fluorescent, confocal and immuno-electron microscopy showed that this protein is present in the cytoplasm, organelles and cell wall, as confirmed by protein fractionation. Moreover, an 18-kDa CyP isoform was specifically released extracellularly when pear pollen was incubated with the Ca2+ chelator EGTA.
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Affiliation(s)
- Luigi Parrotta
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Iris Aloisi
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Chiara Suanno
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Claudia Faleri
- Department of Life Sciences, University of Siena, Siena, Italy
| | | | - Luca Bini
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Giampiero Cai
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Stefano Del Duca
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy.
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Kiełbowicz-Matuk A, Czarnecka J, Banachowicz E, Rey P, Rorat T. Solanum tuberosum ZPR1 encodes a light-regulated nuclear DNA-binding protein adjusting the circadian expression of StBBX24 to light cycle. PLANT, CELL & ENVIRONMENT 2017; 40:424-440. [PMID: 27928822 DOI: 10.1111/pce.12875] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 11/14/2016] [Accepted: 11/16/2016] [Indexed: 06/06/2023]
Abstract
ZPR1 proteins belong to the C4-type of zinc finger coordinators known in animal cells to interact with other proteins and participate in cell growth and proliferation. In contrast, the current knowledge regarding plant ZPR1 proteins is very scarce. Here, we identify a novel potato nuclear factor belonging to this family and named StZPR1. StZPR1 is specifically expressed in photosynthetic organs during the light period, and the ZPR1 protein is located in the nuclear chromatin fraction. From modelling and experimental analyses, we reveal the StZPR1 ability to bind the circadian DNA cis motif 'CAACAGCATC', named CIRC and present in the promoter of the clock-controlled double B-box StBBX24 gene, the expression of which peaks in the middle of the day. We found that transgenic lines silenced for StZPR1 expression still display a 24 h period for the oscillation of StBBX24 expression but delayed by 4 h towards the night. Importantly, other BBX genes exhibit altered circadian regulation in these lines. Our data demonstrate that StZPR1 allows fitting of the StBBX24 circadian rhythm to the light period and provide evidence that ZPR1 is a novel clock-associated protein in plants necessary for the accurate rhythmic expression of specific circadian-regulated genes.
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Affiliation(s)
| | - Jagoda Czarnecka
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Ewa Banachowicz
- Molecular Biophysics Department, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614, Poznań, Poland
| | - Pascal Rey
- CEA, DRF, BIAM, Laboratoire d'Ecophysiologie Moléculaire des Plantes, Saint-Paul-lez-Durance, F-13108, France
- CNRS, UMR 7265 Biologie Végétale & Microbiologie Environnementale, Saint-Paul-lez-Durance, F-13108, France
- Aix-Marseille Université, Saint-Paul-lez-Durance, F-13108, France
| | - Tadeusz Rorat
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
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Kiełbowicz-Matuk A, Banachowicz E, Turska-Tarska A, Rey P, Rorat T. Expression and characterization of a barley phosphatidylinositol transfer protein structurally homologous to the yeast Sec14p protein. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 246:98-111. [PMID: 26993240 DOI: 10.1016/j.plantsci.2016.02.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 02/16/2016] [Accepted: 02/20/2016] [Indexed: 06/05/2023]
Abstract
Phosphatidylinositol transfer proteins (PITPs) include a large group of proteins implicated in the non-vesicular traffic of phosphatidylinositol (PI) between membranes. In yeast, the structure and function of the PITP Sec14-p protein have been well characterized. In contrast, the knowledge on plant PITP proteins is very scarce. In this work, we characterized a novel type of PITP protein in barley named HvSec14p and related to the yeast Sec14-p protein. Our data reveal that HvSec14p consists of only the Sec14p-domain structurally homologous to the yeast phosphoinositide binding domain. We show that HvSec14p expression is up-regulated at both transcript and protein levels at specific stages of development during seed formation and germination, and in leaves of a drought-tolerant barley genotype under osmotic constraints. Modeling analyses of the protein three-dimensional structure revealed its capacity to dock the phosphoinositides, PtdIns(3)P, PtdIns(4)P, PtdIns(5)P and PtdIns(3,5)P2. Consistently, the recombinant HvSec14p protein is able to bind in vitro most PIP types, the highest affinity being observed with PtdIns(3,5)P2. Based on the high gene expression at specific developmental stages and in drought-tolerant barley genotypes, we propose that HvSec14p plays essential roles in the biogenesis of membranes in expanding cells and in their preservation under osmotic stress conditions.
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Affiliation(s)
| | - Ewa Banachowicz
- Molecular Biophysics Department, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland.
| | - Anna Turska-Tarska
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland.
| | - Pascal Rey
- CEA, DSV, IBEB, Laboratoire d'Ecophysiologie Moléculaire des Plantes, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biologie Végétale & Microbiologie Environnementale, Saint-Paul-lez-Durance, F-13108, France; Aix-Marseille Université, Saint-Paul-lez-Durance, F-13108, France.
| | - Tadeusz Rorat
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland.
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Kiełbowicz-Matuk A, Rey P, Rorat T. Interplay between circadian rhythm, time of the day and osmotic stress constraints in the regulation of the expression of a Solanum Double B-box gene. ANNALS OF BOTANY 2014; 113:831-42. [PMID: 24562097 PMCID: PMC3962237 DOI: 10.1093/aob/mct303] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
BACKGROUND AND AIMS Double B-box zinc finger (DBB) proteins are recently identified plant transcription regulators that participate in the response to sodium chloride-induced stress in arabidopsis plants. Little is known regarding their subcellular localization and expression patterns, particularly in relation to other osmotic constraints and the day/night cycle. This study investigated natural variations in the amount of a Solanum DBB protein, SsBBX24, during plant development, and also under various environmental constraints leading to cell dehydration in relation to the circadian clock and the time of day. METHODS SsBBX24 transcript and protein abundance in various organs of phytotron-grown Solanum tuberosum and S. sogarandinum plants were investigated at different time points of the day and under various osmotic constraints. The intracellular location of SsBBX24 was determined by western blot analysis of subcellular fractions. KEY RESULTS Western blot analysis of SsBBX24 protein revealed that it was located in the nucleus at the beginning of the light period and in the cytosol at the end, suggesting movement ('trafficking') during the light phase. SsBBX24 gene expression exhibited circadian cycling under control conditions, with the highest and lowest abundances of both transcript and protein occurring 8 and 18 h after dawn, respectively. Exposing Solanum plants to low temperature, salinity and polyethylene glycol (PEG), but not to drought, disturbed the circadian regulation of SsBBX24 gene expression at the protein level. SsBBX24 transcript and protein accumulated in Solanum plants in response to salt and PEG treatments, but not in response to low temperature or water deficit. Most interestingly, the time of the day modulated the magnitude of SsBBX24 expression in response to high salt concentration. CONCLUSIONS The interplay between circadian rhythm and osmotic constraints in the regulation of the expression of a Solanum DBB transcriptional regulator is demonstrated. It is proposed that stress-dependent, post-transcriptional mechanisms alter the regulation by the circadian clock of the amount of SsBBX24.
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Affiliation(s)
- Agnieszka Kiełbowicz-Matuk
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland
- For correspondence. E-mail
| | - Pascal Rey
- CEA, DSV, IBEB, Lab Ecophysiol Molecul Plantes, Saint-Paul-lez-Durance, F-13108, France
- CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France
- Aix-Marseille Université, Saint-Paul-lez-Durance, F-13108, France
| | - Tadeusz Rorat
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland
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Mokryakova MV, Pogorelko GV, Bruskin SA, Piruzian ES, Abdeeva IA. The role of peptidyl-prolyl cis/trans isomerase genes of Arabidopsis thaliana in plant defense during the course of Xanthomonas campestris infection. RUSS J GENET+ 2014. [DOI: 10.1134/s1022795414020100] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Pogorelko GV, Mokryakova M, Fursova OV, Abdeeva I, Piruzian ES, Bruskin SA. Characterization of three Arabidopsis thaliana immunophilin genes involved in the plant defense response against Pseudomonas syringae. Gene 2014; 538:12-22. [PMID: 24440291 DOI: 10.1016/j.gene.2014.01.029] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 12/20/2013] [Accepted: 01/10/2014] [Indexed: 02/06/2023]
Abstract
Plant immunophilins are a broadly conserved family of proteins, which carry out a variety of cellular functions. In this study, we investigated three immunophilin genes involved in the Arabidopsis thaliana response to Pseudomonas syringae infection: a cytoplasmic localized AtCYP19, a cytoplasmic and nuclear localized AtCYP57, and one nucleus directed FKBP known as AtFKBP65. Arabidopsis knock-out mutations in these immunophilins result in an increased susceptibility to P. syringae, whereas overexpression of these genes alters the transcription profile of pathogen-related defense genes and led to enhanced resistance. Histochemical analysis revealed local gene expression of AtCYP19, AtCYP57, and AtFKBP65 in response to pathogen infection. AtCYP19 was shown to be involved in reactive oxygen species production, and both AtCYP57 and AtFKBP65 provided callose accumulation in plant cell wall. Identification of the involvement of these genes in biotic stress response brings a new set of data that will advance plant immune system research and can be widely used for further investigation in this area.
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Affiliation(s)
- Gennady V Pogorelko
- 219 Bessey Hall, Department of Plant Pathology and Microbiology, Iowa State University, Ames 50014, IA, USA; NI Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Maria Mokryakova
- NI Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Oksana V Fursova
- Geocryology Department, Moscow State University, Leninskie Gory 1, Moscow 119992, Russia.
| | - Inna Abdeeva
- NI Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Eleonora S Piruzian
- NI Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Sergey A Bruskin
- NI Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.
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Alvarado VY, Odokonyero D, Duncan O, Mirkov TE, Scholthof HB. Molecular and physiological properties associated with zebra complex disease in potatoes and its relation with Candidatus Liberibacter contents in psyllid vectors. PLoS One 2012; 7:e37345. [PMID: 22615987 PMCID: PMC3355140 DOI: 10.1371/journal.pone.0037345] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Accepted: 04/20/2012] [Indexed: 12/02/2022] Open
Abstract
Zebra complex (ZC) disease on potatoes is associated with Candidatus Liberibacter solanacearum (CLs), an α-proteobacterium that resides in the plant phloem and is transmitted by the potato psyllid Bactericera cockerelli (Šulc). The name ZC originates from the brown striping in fried chips of infected tubers, but the whole plants also exhibit a variety of morphological features and symptoms for which the physiological or molecular basis are not understood. We determined that compared to healthy plants, stems of ZC-plants accumulate starch and more than three-fold total protein, including gene expression regulatory factors (e.g. cyclophilin) and tuber storage proteins (e.g., patatins), indicating that ZC-affected stems are reprogrammed to exhibit tuber-like physiological properties. Furthermore, the total phenolic content in ZC potato stems was elevated two-fold, and amounts of polyphenol oxidase enzyme were also high, both serving to explain the ZC-hallmark rapid brown discoloration of air-exposed damaged tissue. Newly developed quantitative and/or conventional PCR demonstrated that the percentage of psyllids in laboratory colonies containing detectable levels of CLs and its titer could fluctuate over time with effects on colony prolificacy, but presumed reproduction-associated primary endosymbiont levels remained stable. Potato plants exposed in the laboratory to psyllid populations with relatively low-CLs content survived while exposure of plants to high-CLs psyllids rapidly culminated in a lethal collapse. In conclusion, we identified plant physiological biomarkers associated with the presence of ZC and/or CLs in the vegetative potato plant tissue and determined that the titer of CLs in the psyllid population directly affects the rate of disease development in plants.
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Affiliation(s)
- Veria Y Alvarado
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, Texas, United States of America.
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Cho EK, Kim M. A red algal cyclophilin has an effect on development and growth in Nicotiana tabacum. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2008; 46:868-74. [PMID: 18603440 DOI: 10.1016/j.plaphy.2008.05.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2008] [Revised: 05/18/2008] [Accepted: 05/19/2008] [Indexed: 05/20/2023]
Abstract
In this study, an algal Cyp was introduced into plant to research the effect of the gene on growth and development. cDNA GjCyp-1 was isolated from the red alga (Griffithsia japonica), and a recombinant GjCyp-1 containing a CaMV35S promoter at the amino-terminus was constructed in Nicotiana tabacum. The altered GjCyp-1 levels in plants and the expression pattern of Cyp after hormone treatment were confirmed by RNA blotting. Transcript of GjCyp-1 was induced by plant hormones such as gibberellic acid (GA(3)), indoleacetic acid (IAA), and zeatin (ZA). Constitutive overexpression of GjCyp-1 appeared to be beneficial to seed germination. The ratio of emergence of cotyledon from seeds overexpressing GjCyp-1 was almost three times higher than that of the transgenic seeds carrying only the vector. In addition, it was found that most of the seedlings overexpressing GjCyp-1 were dwarfs with altered root systems. The ratio of leaf length and width and root length from transgenic seedlings overexpressing GjCyp-1 was almost 2 and 3.5 times lower than that of the transgenic seedlings carrying only the vector, respectively. The data in this study suggest that GjCyp-1 may affect development and growth in organisms.
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Affiliation(s)
- Eun Kyung Cho
- Department of Bio-Food Materials, College of Medical Life Science, Silla University, Busan, Republic of Korea.
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