Temperature stress differentially modulates transcription in meiotic anthers of tolerant and sensitive tomato plants
Ontology highlight
ABSTRACT:
ORGANISM(S): Solanum lycopersicum
PROVIDER: GSE24805 | GEO | 2012/09/18
SECONDARY ACCESSION(S): PRJNA132299
REPOSITORIES: GEO
Similar Datasets
Project description:We have used cDNA-AFLP and microarray analyses to profile the response of the tomato meiotic anther transcriptome to moderate heat stress condition in Moneymaker or Falcorosso and HeatSet1 tomato genotype. Combimatrix microarray technology were applied to obtain a general overview of the gene expression in meiotic anthers of a tolerant and a sensitive tomato genotype. We analyzed three time points (0,2,and 6h) for each genotype. For each sample we performed three biological replicates.
2012-09-18 | E-GEOD-24805 | biostudies-arrayexpress
Project description:BackgroundFluctuations in temperature occur naturally during plant growth and reproduction. However, in the hot summers this variation may become stressful and damaging for the molecular mechanisms involved in proper cell growth, impairing thus plant development and particularly fruit-set in many crop plants. Tolerance to such a stress can be achieved by constitutive gene expression or by rapid changes in gene expression, which ultimately leads to protection against thermal damage. We have used cDNA-AFLP and microarray analyses to compare the early response of the tomato meiotic anther transcriptome to moderate heat stress conditions (32°C) in a heat-tolerant and a heat-sensitive tomato genotype. In the light of the expected global temperature increases, elucidating such protective mechanisms and identifying candidate tolerance genes can be used to improve breeding strategies for crop tolerance to heat stress.ResultsThe cDNA-AFLP analysis shows that 30 h of moderate heat stress (MHS) alter the expression of approximately 1% of the studied transcript-derived fragments in a heat-sensitive genotype. The major effect is gene down-regulation after the first 2 h of stress. The microarray analysis subsequently applied to elucidate early responses of a heat-tolerant and a heat-sensitive tomato genotype, also shows about 1% of the genes having significant changes in expression after the 2 h of stress. The tolerant genotype not only reacts with moderate transcriptomic changes but also exhibits constitutively higher expression levels of genes involved in protection and thermotolerance.ConclusionIn contrast to the heat-sensitive genotype, the heat-tolerant genotype exhibits moderate transcriptional changes under moderate heat stress. Moreover, the heat-tolerant genotype also shows a different constitutive gene expression profile compared to the heat-sensitive genotype, indicating genetic differences in adaptation to increased temperatures. In the heat-tolerant genotype, the majority of changes in gene expression is represented by up-regulation, while in the heat-sensitive genotype there is a general trend to down-regulate gene expression upon MHS. The putative functions associated with the genes identified by cDNA-AFLP or microarray indicate the involvement of heat shock, metabolism, antioxidant and development pathways. Based on the observed differences in response to MHS and on literature sources, we identified a number of candidate transcripts involved in heat-tolerance.
| S-EPMC3162933 | biostudies-literature
Project description:The study was aimed to investigate by differential proteomics heat stress response mechanisms in tomato anthers collected from flowers of Solanum lycopersicum cv Saladette (SAL), already annotated as a thermo-tolerant tomato genotype and flowers from Solanum lycopersicum cv M82, reported as a thermo-sensitive genotype. Proteins constitutively present at higher or lower level in the tolerant genotype and/or proteins whose abundance was modulated by growth under high temperature in both genotypes were identified, thus leading to define processes involved in the heat stress response and responsible for efficient reduction of the adverse effects of HS. Results showed differences in the abundance of ninety-six proteins and their functional classification highlighted that heat stress mainly affected metabolic pathways, such as energy metabolism (glycolysis and sucrose degradation), nitrogen assimilation and amino acid biosynthesis and modulated the expression of proteins involved in the folding and degradation machinery and ROS detoxification systems
2018-07-25 | PXD010156 | Pride
Project description:Wild halophytic tomato has long been considered as an ideal gene donor for improving salt tolerance in tomato cultivars. Here, a wild tomato genotype, Solanum pimpinellifolium ‘PI365967’ is significantly more salt-tolerant than a cultivar, Solanum lycopersicom ‘moneymaker’. Affymetrix Tomato Genome Arrays was used to compare the transcriptome change of PI365967 and Moneymaker by salt treatment.After treatment with 200 mM NaCl for 5 h, PI365967 showed relatively fewer responsive genes compared to Moneymaker. Salt Overly Sensitive (SOS) pathway was found to be more active in PI365967 than in Moneymaker, coinciding with relatively less accumulation of Na+ in shoots of PI365967. A gene encoding salicylic acid-binding protein 2 (SABP2) was induced by salinity only in PI365967, suggesting a possible role of salicylic acid signaling in salt response of PI365967. The fact that two genes encoding lactoylglutathione lyase were salt-inducible only in PI365967, together with much higher basal expression of several glutathione S-transferase genes, suggested a more effective detoxification system in PI365967. Key words: salt tolerance, transcriptomic profiling, wild tomato, ion homeostasis, SABP2.
2010-06-01 | GSE16401 | GEO
Project description:Wild halophytic tomato has long been considered as an ideal gene donor for improving salt tolerance in tomato cultivars. Here, a wild tomato genotype, Solanum pimpinellifolium M-bM-^@M-^XPI365967M-bM-^@M-^Y is significantly more salt-tolerant than a cultivar, Solanum lycopersicom M-bM-^@M-^XmoneymakerM-bM-^@M-^Y. Affymetrix Tomato Genome Arrays was used to compare the transcriptome change of PI365967 and Moneymaker by salt treatment.After treatment with 200 mM NaCl for 5 h, PI365967 showed relatively fewer responsive genes compared to Moneymaker. Salt Overly Sensitive (SOS) pathway was found to be more active in PI365967 than in Moneymaker, coinciding with relatively less accumulation of Na+ in shoots of PI365967. A gene encoding salicylic acid-binding protein 2 (SABP2) was induced by salinity only in PI365967, suggesting a possible role of salicylic acid signaling in salt response of PI365967. The fact that two genes encoding lactoylglutathione lyase were salt-inducible only in PI365967, together with much higher basal expression of several glutathione S-transferase genes, suggested a more effective detoxification system in PI365967. Key words: salt tolerance, transcriptomic profiling, wild tomato, ion homeostasis, SABP2. In one treatment, 9 six-leaf-old plants of one tomato genotype (PI365967 or Moneymaker) were divided into three biological replicates and treated hydroponically under sterile condition with (or without) 200 mM NaCl for 5 h. RNA isolated from pooled three individual plants was used in hybridization to one chip, resulting in 12 chips in total.
2010-05-31 | E-GEOD-16401 | biostudies-arrayexpress
Project description:BackgroundRice grain production is susceptible to a changing environment that imposes both biotic and abiotic stress conditions. Cold episodes are becoming more frequent in the last years and directly affect rice yield in areas with a temperate climate. Rice is particularly susceptible to cold stress during the reproductive phase, especially in anthers during post-meiotic stages which, in turn, affect pollen production. However, a number of rice cultivars with a certain degree of tolerance to cold have been described, which may represent a good breeding resource for improvement of susceptible commercial varieties. Plants experiencing cold stress activate a molecular response in order to reprogram many metabolic pathways to face these hostile conditions.ResultsHere we performed RNA-seq analysis using cold-stressed post-meiotic anther samples from a cold-tolerant, Erythroceros Hokkaido (ERY), and a cold-susceptible commercial cultivar Sant'Andrea (S.AND). Both cultivars displayed an early common molecular response to cold, although the changes in expression levels are much more drastic in the tolerant one. Comparing our datasets, obtained after one-night cold stress, with other similar genome-wide studies showed very few common deregulated genes, suggesting that molecular responses in cold-stressed anthers strongly depend on conditions and the duration of the cold treatments. Cold-tolerant ERY exhibits specific molecular responses related to ethylene metabolism, which appears to be activated after cold stress. On the other hand, S.AND cold-treated plants showed a general downregulation of photosystem I and II genes, supporting a role of photosynthesis and chloroplasts in cold responses in anthers, which has remained elusive.ConclusionsOur study revealed that a number of ethylene-related transcription factors, as putative master regulators of cold responses, were upregulated in ERY providing promising candidates to confer tolerance to susceptible cultivars. Our results also suggest that the photosynthesis machinery might be a good target to improve cold tolerance in anthers. In summary, our study provides valuable candidates for further analysis and molecular breeding for cold-tolerant rice cultivars.
| S-EPMC6920279 | biostudies-literature
Project description:Background: Rice grain production is susceptible to a changing environment that imposes both biotic and abiotic stress conditions. Cold episodes are becoming more frequent in the last years and directly affect rice yield in areas with a temperate climate. Rice is particularly susceptible to cold stress during the reproductive phase, especially in anthers during post-meiotic stages which, in turn, affect pollen production. However, a number of rice cultivars with a certain degree of tolerance to cold have been described, which may represent a good breeding resource for improvement of susceptible commercial varieties. Plants experiencing cold stress activate a molecular response in order to reprogram many metabolic pathways to face these hostile conditions. Results: Here we performed RNA-seq analysis using cold-stressed post-meiotic anther samples from a cold-tolerant, Erythroceros Hokkaido (ERY), and a cold-susceptible commercial cultivar Sant´Andrea (S.AND). Both cultivars displayed an early common molecular response to cold, although the changes in expression levels are much more drastic in the tolerant one. Comparing our datasets, obtained after one-night cold stress, with other similar genome-wide studies showed very few common deregulated genes, leading to the conclusion that molecular responses in cold-stressed anthers strongly depend on conditions and the duration of the cold treatments. Cold-tolerant ERY exhibits specific molecular responses related to ethylene metabolism, which appears to be activated after cold stress. On the other hand, S.AND cold-treated plants showed a general downregulation of photosystem I and II genes, supporting a role of photosynthesis and chloroplasts in cold responses in anthers, which has remained elusive. Conclusions: Our study revealed that a number of ethylene-related transcription factors, as putative master regulators of cold responses, were upregulated in ERY providing promising candidates to confer tolerance to susceptible cultivars. Our results also suggest that the photosynthesis machinery might be a good target to improve cold tolerance in anthers. In summary, our study provides valuable candidates for further analysis and molecular breeding for cold-tolerant rice cultivars.
2019-09-07 | GSE137002 | GEO
Project description:Constant global warming is one of the most detrimental environmental factors for agriculture causing significant losses in productivity as heat stress (HS) conditions damage plant growth and reproduction. In flowering plants such as tomato, HS has drastic repercussions on development and functionality of male reproductive organs and pollen. Response mechanisms to HS in tomato anthers and pollen have been widely investigated by transcriptomics; on the contrary, exhaustive proteomic evidences are still lacking. In this context, a differential proteomic study was performed on tomato anthers collected from two genotypes (thermo-tolerant and thermo-sensitive) to explore stress response mechanisms and identify proteins possibly associated to thermo-tolerance. Results showed that HS mainly affected energy and amino acid metabolism and nitrogen assimilation and modulated the expression of proteins involved in assuring protein quality and ROS detoxification. Moreover, proteins potentially associated to thermo-tolerant features, such as glutamine synthetase, S-adenosylmethionine synthase and polyphenol oxidase, were identified.
| S-EPMC6053223 | biostudies-literature
Project description:We describe here a new micro-proteomics workflow for the analysis of individual barley anthers. The workflow detects more than 4000 proteins from small amounts of material representing single or paired anther samples, covering a dynamic range of protein expression levels across five orders of magnitude. We consistently identified ~2800 proteins in a single 0.6mm anther and ~4000 proteins in a paired-anther sample. This demonstrates an important technological advance in plant proteomics, considering the limited amount of starting material. We employed our micro-proteomics workflow to investigate the proteome of the developing barley anther containing male gametes in the early stages of meiosis. We successfully identified several low abundant meiosis-related proteins, proving that our approach is highly sensitive and consequently powerful. To date, no work has been published previously on precisely staged individual plant anthers.
2019-05-04 | PXD010887 | Pride
Project description:In the current project, we aimed to discover how the barley anther proteome changes, both quantitatively and qualitatively, during meiotic prophase I when the important process of homologous recombination is taking place. Taking advantage of a recently published barley anther transcriptomic dataset (BAnTr) and a newly developed sensitive mass spectrometry-based approach to analyse barley anther proteome, we have conducted high-resolution mass spectrometry analysis of barley anthers, collected at 6 time points and representing their development from pre-meiosis to metaphase. Each time point was carefully staged using immunocytology. We identified >6400 proteins, including 82 known and putative meiotic proteins, and were able to quantify dynamic variation in the proteome during different stages of barley anther development.
2022-04-04 | PXD026200 | Pride