Arabidopsis thaliana
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA292816 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:The growth and fruit quality of grapevine are widely affected by abnormal climatic conditions such as water deficit. But how grapevine responds to drought stress is still largely unknown. Here we found that VaNAC26, a member of NAC transcription factor family, was up-regulated dramatically during cold, drought and salinity treatments in Vitis amurensis, a cold and drought-hardiness wild Vitis species. Ectopic overexpression of VaNAC26 enhanced the drought and salt tolerances in transgenic Arabidopsis. Higher activities of antioxidant enzymes and the lower concentration of H2O2 and O2- were found in VaNAC26-OE lines than in wild type plants under drought stress. These results indicate that the reactive oxygen species (ROS) scavenging was enhanced by VaNAC26 in transgenic lines. Microarray based transcriptome analysis reveals that genes related to jasmonic acid (JA) synthesis and signaling were up-regulated in VaNAC26-OE lines under both normal and drought conditions. VaNAC26 showed a specific binding ability on NACRS motif, which was broadly existent in the promoter regions of up-regulated genes in transgenic lines. Endogenous JA content was found increased obviously in VaNAC26-OE-2/3 lines. Our data suggests that VaNAC26 responds to abiotic stresses and may enhance the drought tolerance by transcriptional regulation of JA synthesis in Arabidopsis.
2015-08-14 | GSE72050 | GEO
Project description:The growth and fruit quality of grapevine are widely affected by abnormal climatic conditions such as extreme temperature. But how grapevine responds to cold stress is still largely unknown. Here we found that VaMyb14, a member of R2R3 Myb transcription factor family, was up-regulated dramatically during cold, drought and salinity treatments in Vitis amurensis, a cold and drought-hardiness wild Vitis species. Overexpression VaMyb14 in Arabidopsis increased antioxidant enzyme activity, especially POD activity, than that of the wild type and decreased the MDA content. A series of ABA metabolism and signal transduction genes in transgenic Arabidopsiswere were up-regulated in microarry results, including several nsLTPs, PP2Cs, RD29B, COR78 and other structural genes, suggesting that VaMyb14 not only affect the ABA signaling pathways, but also activates the CBF-COR independent nsLTP genes. Collectively, these results illustrate that Vitis Myb14 could represent a node of convergence regulating grapevine stress responses, including improve defence induced phytoalexin resveratrol against necrotrophic as well as drought and/or cold stress tolerance, highlighting Myb14 as a potential gene resource in future grapevine breeding.
2018-06-01 | GSE112389 | GEO
Project description:To improve both drought stress tolerance and growth of plants, we generated transgenic Arabidopsis plants that overexpress two transcription factors: DREB1A and PIF4. It was reported that DREB1A improves drought stress tolerance in various crops but causes dwarfism, and PIF4 enhances cell elongation through activation of cell wall synthesis. We performed microarray experiments using a single overexpressor of PIF4 and the double overexpressor of DREB1A and PIF4 to study the potential interactions of the gene networks regulated by the two transcription factors in the double overexpressor.
2019-01-07 | E-MTAB-6549 | biostudies-arrayexpress
Project description:To improve both drought stress tolerance and growth of plants, we generated transgenic Arabidopsis plants that overexpress two transcription factors: DREB1A and OsPIL1. It was reported that DREB1A improves drought stress tolerance in various crops but causes dwarfism, and OsPIL1 enhances cell elongation through activation of cell wall synthesis in rice. We performed microarray experiments using a single overexpressor of OsPIL1 and the double overexpressor of DREB1A and OsPIL1 to study the potential interactions of the gene networks regulated by the two transcription factors in the double overexpressor.
2016-12-06 | E-MTAB-4073 | biostudies-arrayexpress
Project description:Thellungiella, an Arabidopsis-related halophyte, is an emerging model species for studies designed to elucidate molecular mechanisms of abiotic stress tolerance. Using a cDNA microarray containing 3628 unique sequences derived from previously reported libraries of stress-induced cDNAs of the Yukon ecotype of Thellungiella, we obtained transcript profiles of its response to drought, cold, high salinity and re-watering after drought. A total of 153 transcripts were found to be significantly differentially regulated under the conditions studied. Only six of these genes responded to all three stresses of drought, cold and salinity. Unlike in Arabidopsis, there were relatively few transcript changes in response to high salinity in this halophyte. Furthermore, drought responsive-transcripts in Thellungiella provided a link between the down-regulation of defense-related transcripts and the increase of endogenous abscisic acid during drought. This antagonistic interaction between drought and biotic stress response may potentially be beneficial for survival under drought stress. Intriguingly, changes of transcript abundance in response to cold implicate the involvement of jasmonic acid in the cold acclimation of Thellungiella. Taken together, our results provide useful starting points for more in depth analysis of Thellungiella’s extreme stress tolerance. Keywords: Abiotic stress response
2006-07-22 | GSE2981 | GEO
Project description:External application of acetic acid has been recently reported to enhance the survival to drought in plants such as Arabidopsis, rapeseed, maize, rice and wheat, but the effects of acetic acid application on increased drought tolerance in woody plants such as a tropical crop “cassava” remain elusive. A molecular understanding of acetic acid-induced drought avoidance in cassava will contribute to the development of technology that can be used to enhance drought tolerance without resorting to transgenic technology or advancements in cassava cultivation. In the present study, morphological, physiological and molecular responses to drought were analyzed in cassava after the treatment with acetic acid. Results indicated that the acetic acid-treated cassava plants had a higher level of drought avoidance than water-treated, control plants. Specifically, higher leaf relative water content, and chlorophyll and carotenoid levels were observed as soils dried out during the drought treatment. Leaf temperatures in acetic acid-treated cassava plants were higher relative to leaves on plants pretreated with water and the increase of ABA content was observed in leaves of acetic acid-treated plants, suggesting that stomatal conductance and the transpiration rate in leaves of acetic acid-treated plants decreased to maintain relative water contents and avoid drought. Transcriptome analysis revealed that the acetic acid treatment increased the expression of ABA signaling-related genes, such as OPEN STOMATA 1 (OST1) and protein phosphatase 2C; as well as drought response and tolerance-related genes, such as outer membrane tryptophan-rich sensory protein (TSPO), and heat shock proteins. Collectively, the external application of acetic acid enhances drought avoidance in cassava through the upregulation of ABA signaling pathway genes and several stress response- and tolerance-related genes. These data support the idea that adjustments of the acetic acid application to plants is useful to enhance drought tolerance in order to minimize the growth inhibition in the agricultural field.
2019-05-29 | GSE122140 | GEO
Project description:We report the RNAseq technology for high-throughput profiling of differentially expressed genes after cold treatment in Vitis amurensis
2021-11-09 | GSE122382 | GEO
Project description:To understand the role of acetic acids in drought tolerance, we have employed transcriptional profiling of plants treated with (or without) acetic acid and subsequent drought treatments. Agilent-021169 Arabidopsis 4 Oligo Microarray (V4) were used.
2017-04-29 | GSE46524 | GEO
Project description:Overexpression of AtCAMTA5 enhances drought tolerance in Arabidopsis.
| PRJNA244145 | ENA
Project description:One of the main Ca2+ decoders in plants are calcium-dependent protein kinases (CDPKs). Among them, AtCPK1 is one of the best studied as a positive regulator in the plant response to biotic and abiotic stress. Inactivation of the autoinhibitory domain of AtCPK1 (the mutated form of AtCPK1-Ca) provides constitutive activity of the kinase via imitation of the stress-induced Ca2+ increase. For the first time in the present study, we performed a proteomic analysis of the overexpressed mutant AtCPK1-Ca form of Arabidopsis thaliana in transformed Vitis amurensis calli. In our previous studies, we have shown that overexpression of this mutated form led to dramatically enhanced specialised metabolism in plant cell cultures, including resveratrol in V. amurensis.
2023-10-24 | PXD043507 | Pride