Identification of a NAC Transcription Factor for the Elicitation of Glyceollin Biosynthesis in Soybean Reveals a Conserved Phytoalexin Regulatory Pathway
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ABSTRACT:
ORGANISM(S): Glycine max
PROVIDER: GSE112584 | GEO | 2019/02/27
REPOSITORIES: GEO
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Project description:Identification of a NAC Transcription Factor for the Elicitation of Glyceollin Biosynthesis in Soybean Reveals a Conserved Phytoalexin Regulatory Pathway
| PRJNA448336 | ENA
Project description:Background The homeodomain leucine zipper (HD-Zip) transcription factor family is one of the largest plant specific superfamilies, and includes genes with roles in modulation of plant growth and response to environmental stresses. Many HD-Zip genes are characterized in Arabidopsis (Arabidopsis thaliana), and members of the family are being investigated for abiotic stress responses in rice (Oryza sativa), maize (Zea mays), poplar (Populus trichocarpa) and cucumber (Cucmis sativus). Findings in these species suggest HD-Zip genes as high priority candidates for crop improvement. Results In this study we have identified members of the HD-Zip gene family in soybean cv. 'Williams 82', and characterized their expression under dehydration and salt stress. Homology searches with BLASTP and Hidden Markov Model guided sequence alignments identified 101 HD-Zip genes in the soybean genome. Phylogeny reconstruction coupled with domain and gene structure analyses using soybean, Arabidopsis, rice, grape (Vitis vinifera), and Medicago truncatula homologues enabled placement of these sequences into four previously described subfamilies. Of the 101 HD-Zip genes identified in soybean, 88 exist as whole-genome duplication-derived gene pairs, indicating high retention of these genes following polyploidy in Glycine ~10 Mya. The HD-Zip genes exhibit ubiquitous expression patterns across 24 conditions that include 17 tissues of soybean. An RNA-Seq experiment performed to study differential gene expression at 0, 1, 6 and 12 hr soybean roots under dehydration and salt stress identified 20 differentially expressed (DE) genes. Several of these DE genes are orthologs of genes previously reported to play a role under abiotic stress, implying conservation of HD-Zip gene functions across species. Screening of HD-Zip promoters identified transcription factor binding sites that are overrepresented in the DE genes under both dehydration and salt stress, providing further support for the role of HD-Zip genes in abiotic stress responses. Conclusions We provide a thorough description of soybean HD-Zip genes, and identify potential candidates with probable roles in dehydration and salt stress. Expression profiles generated for all soybean genes, under dehydration and salt stress, at four time points, will serve as an important resource for the soybean research community, and will aid in understanding plant responses to abiotic stress.
2014-11-01 | GSE57252 | GEO
Project description:Background The homeodomain leucine zipper (HD-Zip) transcription factor family is one of the largest plant specific superfamilies, and includes genes with roles in modulation of plant growth and response to environmental stresses. Many HD-Zip genes are characterized in Arabidopsis (Arabidopsis thaliana), and members of the family are being investigated for abiotic stress responses in rice (Oryza sativa), maize (Zea mays), poplar (Populus trichocarpa) and cucumber (Cucmis sativus). Findings in these species suggest HD-Zip genes as high priority candidates for crop improvement. Results In this study we have identified members of the HD-Zip gene family in soybean cv. 'Williams 82', and characterized their expression under dehydration and salt stress. Homology searches with BLASTP and Hidden Markov Model guided sequence alignments identified 101 HD-Zip genes in the soybean genome. Phylogeny reconstruction coupled with domain and gene structure analyses using soybean, Arabidopsis, rice, grape (Vitis vinifera), and Medicago truncatula homologues enabled placement of these sequences into four previously described subfamilies. Of the 101 HD-Zip genes identified in soybean, 88 exist as whole-genome duplication-derived gene pairs, indicating high retention of these genes following polyploidy in Glycine ~10 Mya. The HD-Zip genes exhibit ubiquitous expression patterns across 24 conditions that include 17 tissues of soybean. An RNA-Seq experiment performed to study differential gene expression at 0, 1, 6 and 12 hr soybean roots under dehydration and salt stress identified 20 differentially expressed (DE) genes. Several of these DE genes are orthologs of genes previously reported to play a role under abiotic stress, implying conservation of HD-Zip gene functions across species. Screening of HD-Zip promoters identified transcription factor binding sites that are overrepresented in the DE genes under both dehydration and salt stress, providing further support for the role of HD-Zip genes in abiotic stress responses. Conclusions We provide a thorough description of soybean HD-Zip genes, and identify potential candidates with probable roles in dehydration and salt stress. Expression profiles generated for all soybean genes, under dehydration and salt stress, at four time points, will serve as an important resource for the soybean research community, and will aid in understanding plant responses to abiotic stress. We sequenced mRNA from soybean cv. "Williams 82" root samples that includes three control samples (0 hr), and three biological replicates for each of the three time points 1, 6 and 12 hr under dehydration and salt stress
2014-11-01 | E-GEOD-57252 | biostudies-arrayexpress
Project description:MicroRNAs (miRNAs) play an important role as regulators of gene expression. In plants they affect a wide variety of biological process like growth, development and response to biotic and abiotic stress. Glycine max is one of the most important crop worldwide due to its rich protein and oil content. Drought and salt stress are the main abiotic stresses that affect soybean. Salt stress impacts the fisiology of the plants due to the damage in the photosynthetic rate, growth and development. This work aim to identify salt-stress responsive miRNAs and their respective targets in Glycine max using high-throughput RNA sequencing technology.
2017-07-11 | GSE69570 | GEO
Project description:MicroRNAs (miRNAs) play an important role as regulators of gene expression. In plants they affect a wide variety of biological process like growth, development and response to biotic and abiotic stress. Glycine max is one of the most important crop worldwide due to its rich protein and oil content. Drought and salt stress are the main abiotic stresses that affect soybean. Salt stress impacts the fisiology of the plants due to the damage in the photosynthetic rate, growth and development. This work aim to identify salt-stress responsive miRNAs and their respective targets in Glycine max using high-throughput RNA sequencing technology.
2017-07-11 | GSE69569 | GEO
Project description:MicroRNAs (miRNAs) are a class of endogenous small non-coding RNAs (19–24 nt) that regulates de gene expression, mainly through mRNA targets cleavage and translation inhibition. In plants, miRNAs have been shown to play pivotal roles in a wide variety of metabolic and biological processes like plant growth, development, and response to biotic and abiotic stress. Soybean is one of the most important crops worldwide, due to the production of oil and its high protein content. The reproductive phase is considered the most important for the yield of soybean, which is mainly intended to produce the grains. The identification of miRNAs is not yet saturated in soybeans, and there are no studies linking them to the different floral organs. In this study, three different soybean floral whorls were used in the construction of sRNA libraries. The sequencing of petal, carpel and stamen libraries by the Solexa platform generated a total of 10,165,661 sequences. Subsequently analyses detected 200 miRNAs sequences, from those 41 were novel miRNAs never detected before, 80 were conserved soybean miRNAs, 31 were new antisense conserved soybean miRNAs and 46 soybean miRNAs isoforms. We also found a new miRNA conserved in other plant species, and finally one miRNA-sibling of a soybean conserved miRNA. Conserved and novel miRNAs were evaluated by RT-qPCR. We observed a differential expression across the three whorls for six miRNAs analyzed. A computational prediction of targets for miRNAs analyzed by RT-qPCR was performed. Many of the predicted targets have described functions related to the reproductive process in plants. In summary, the increased accumulation of specific and novel miRNAs in different whorls indicates that miRNAs are an important part of the regulatory network in soybean flower.
2018-05-25 | GSE69572 | GEO
Project description:Roots are generally the critical drought sensors, but little is known about their molecular response to drought stress. We used the drought-tolerant soybean variety ‘Jiyu 47’ to investigate the differentially expressed proteins (DEPs) in soybean roots during the seedling stage based on the TMT proteomics analysis. Results of enrichment analyses based on a total of 468 DEPs revealed a coordinated expression pattern of proteins involved in various cellular metabolisms responding to drought stress in soybean roots. Our results showed that drought stress caused significant alterations in the expression of proteins involved in several metabolic pathways in soybean roots, including the carbohydrate metabolism, the metabolism of the osmotic regulation substances, and the antioxidant defense system (i.e., the glutathione metabolism). Increased production of reduced glutathione (GSH) enhanced the prevention of the damage caused by reactive oxygen species and the tolerance of the abiotic stress. The glutathione metabolism played a key role in modifying the antioxidant defense system in response to drought stress in soybean roots. Our proteomic study demonstrated that the soybean plants responded to drought stress by coordinating their protein expression during the vegetative stage, providing novel insights into the molecular mechanisms regulating the response to abiotic stress in plants.
2022-05-08 | PXD033092 | Pride
Project description:More than 40% of the world’s potentially arable lands are composed of acid soils, and the area exceeds 20 million hectares in China.Aluminum (Al) toxicity have become major factors threating crop production on acid soils. NTL proteins are a group of NAC transcription factors, and play an important role in the mechanisms of plant response to various abiotic stresses, such as drought, salt and cold stress. However, the underlying adaption mechanism of whether NTL is involved in regulating Al toxicity in plants remain poorly understood. Soybean is important grain and oil crop. Therefore, this study focused onanalyzing the function of GmNTLs in soybean adaptation to Al toxicity. Bioinformatics analysis and expression pattern analysis were performed on 15 members of the GmNTL family in the soybean. At the same time, we preliminary analyzed the function of some members in the adaptation mechanism of aluminum toxicity by overexpressing the genes in Arabidopsis thaliana.
2021-07-27 | GSE180839 | GEO
Project description:Soybean aphids are phloem-feeding pests that can cause significant yield losses in soybean plants. Soybean aphids thrive on susceptible soybean lines but not on resistant lines. We used microarrays to characterize the soybean plant's transcriptional defense against aphids in two related cultivars, a susceptible line and a resistant line with the Rag1 aphid-resistance gene. We measured trancript levels in leaves after one and seven days of aphid infestation.
2012-01-31 | GSE35427 | GEO