Genes regulated by WIPK and SIPK in wounded tobacco leaves
Ontology highlight
ABSTRACT:
ORGANISM(S): Nicotiana tabacum
PROVIDER: GSE205597 | GEO | 2022/06/08
REPOSITORIES: GEO
Similar Datasets
Project description:WIPK and SIPK, two tobacco MAPKs, are rapidly activated by wounding. Goal is to identify the genes regulated by WIPK and SIPK. For this purpose, we produced transgenic tobacco plants in which expression of WIPK and SIPK (WIPK/SIPK-suppressed plants) is suppressed by RNAi.
2019-12-10 | GSE133681 | GEO
Project description:Comparative analysis of tobacco leaves transcriptomes unveils carotenoid pathway potentially determined the characteristics of aroma compounds in different environmental regions. Tobacco (Nicotiana tabacum) is a sensitive crop to environmental changes, and a tobacco with unique volatile aroma fractions always formed in specific ecological conditions. In order to investigate the differential expressed genes caused by environmental changes and reveal the formation mechanism of characteristics of tobacco in three different aroma tobacco regions of Guizhou Province, Agilent tobacco microarray was adapted for transcriptome comparison of tobacco leaves in medium aroma tobacco region Kaiyang and light aroma tobacco regions Weining and Tianzhu. Results showed that there was big difference among the gene expression profiles of tobacco leaves in different environmental conditions. A total of 517 differential expressed genes (DEGs) between Weining and Tianzhu were identified, while 733 and 1,005 genes differentially expressed between Longgang and another two tobacco regions Weining and Tianzhu, respectively. Compared with Longgang, up-regulated genes in Weining and Tianzhu were likely involved in secondary metabolism pathways, especially carotenoid pathway, including PHYTOENE SYNTHASE, PHYTOENE DEHYDROGENASE, LYCOPENE ε-CYCLASE, CAROTENOID β-HYDROXYLASE and CAROTENOID CLEAVAGE DIOXYGENASE 1 genes, while most down-regulated genes played important roles in response to temperature and light radiation, such as heat shock proteins. Gene Ontology and MapMan analyses demonstrated that the DEGs among different environmental regions were significantly enriched in light reaction of photosystem II, response of stimulus and secondary metabolism, suggesting they played crucial roles in environmental adaptation and accumulation of aroma compounds in tobacco plants. Through comprehensive transcriptome comparison, we not only identified several stress response genes in tobacco leaves from different environmental regions but also highlighted the importance of carotenoid pathway genes for characteristics of aroma compounds in specific growing regions. Our study primarily laid the foundation for further understanding the molecular mechanism of environmental adaptation of tobacco plants and molecular regulation of aroma substances in tobacco leaves.
2012-02-23 | GSE36008 | GEO
Project description:Genes regulated by WIPK and SIPK in wounded tobacco leaves
| PRJNA846687 | ENA
Project description:Background: Anatabine, although being one of four major tobacco alkaloids, is never accumulated in high quantity in any of the naturally occurring species from the Nicotiana genus. Previous studies therefore focused on transgenic approaches to synthetize anatabine, most notably by generating transgenic lines with suppressed putrescine methyltransferase (PMT) activity. This led to promising results, but the global gene expression of plants with such distinct metabolism has not been analyzed. In the current study, we describe how these plants respond to topping and the downstream effects on alkaloid biosynthesis. Results: The surge in anatabine accumulation in PMT transgenic lines after topping treatment and its effects on gene expression changes were analyzed. The results revealed increases in expression of isoflavone reductase-like (A622) and berberine bridge-like enzymes (BBLs) oxidoreductase genes, previously shown to be crucial for the final steps of nicotine biosynthesis. We also observed significantly higher methylputrescine oxidase (MPO) expression in all plants subjected to topping treatment. In order to investigate if MPO suppression would have the same effects as that of PMT, we generated transgenic plants. These plants with suppressed MPO expression showed an almost complete drop in leaf nicotine content, whereas leaf anatabine was observed to increase by a factor of ~1.6X. Conclusion: Our results are the first concrete evidence that suppression of MPO leads to decreased nicotine in favor of anatabine in tobacco roots and that this anatabine is successfully transported to tobacco leaves. Alkaloid transport in plants remains to be investigated to higher detail due to high variation of its efficiency among Nicotiana species and varieties of tobacco. Our research adds important step to better understand pyrrolidine ring biosynthesis and its effects on gene expression and subsequent accumulation of anatabine.
2023-04-17 | GSE229462 | GEO
Project description:Comparative analysis of tobacco leaves transcriptomes unveils carotenoid pathway potentially determined the characteristics of aroma compounds in different environmental regions. Tobacco (Nicotiana tabacum) is a sensitive crop to environmental changes, and a tobacco with unique volatile aroma fractions always formed in specific ecological conditions. In order to investigate the differential expressed genes caused by environmental changes and reveal the formation mechanism of characteristics of tobacco in three different aroma tobacco regions of Guizhou Province, Agilent tobacco microarray was adapted for transcriptome comparison of tobacco leaves in medium aroma tobacco region Kaiyang and light aroma tobacco regions Weining and Tianzhu. Results showed that there was big difference among the gene expression profiles of tobacco leaves in different environmental conditions. A total of 517 differential expressed genes (DEGs) between Weining and Tianzhu were identified, while 733 and 1,005 genes differentially expressed between Longgang and another two tobacco regions Weining and Tianzhu, respectively. Compared with Longgang, up-regulated genes in Weining and Tianzhu were likely involved in secondary metabolism pathways, especially carotenoid pathway, including PHYTOENE SYNTHASE, PHYTOENE DEHYDROGENASE, LYCOPENE ε-CYCLASE, CAROTENOID β-HYDROXYLASE and CAROTENOID CLEAVAGE DIOXYGENASE 1 genes, while most down-regulated genes played important roles in response to temperature and light radiation, such as heat shock proteins. Gene Ontology and MapMan analyses demonstrated that the DEGs among different environmental regions were significantly enriched in light reaction of photosystem II, response of stimulus and secondary metabolism, suggesting they played crucial roles in environmental adaptation and accumulation of aroma compounds in tobacco plants. Through comprehensive transcriptome comparison, we not only identified several stress response genes in tobacco leaves from different environmental regions but also highlighted the importance of carotenoid pathway genes for characteristics of aroma compounds in specific growing regions. Our study primarily laid the foundation for further understanding the molecular mechanism of environmental adaptation of tobacco plants and molecular regulation of aroma substances in tobacco leaves. In order to investigate the differential expressed genes caused by environmental changes and reveal the formation mechanism of characteristics of tobacco in three different aroma tobacco regions of Guizhou Province, Agilent tobacco microarray was adapted for transcriptome comparison of tobacco leaves in medium aroma tobacco region Kaiyang and light aroma tobacco regions Weining and Tianzhu.
2012-02-23 | E-GEOD-36008 | biostudies-arrayexpress
Project description:Search for genes regulated by WIPK and SIPK in wounded tobacco leaves
| PRJNA552224 | ENA
Project description:microbial communities on cigar tobacco leaf
| PRJNA741203 | ENA
Project description:Microarray experiments were performed on the roots and leaves samples seperately using custom based Nimblegen platform (12plex). This is a time-course study. The plants were grown in controlled growth chamber condiditons. The seeds were sown in sterile petri plates with modified half-strength MS agar medium. The seedlings were then aseptically transferred into sterile polycarbonate container with half-strength MS liquid medium. Seedlings were grown for 2 weeks in an incubator set at 25 oC with constant light and subjected to dehydration for 20min, 40min, 1hr, 2hrs, and 4hrs. We used a hydrophonics system for the trancriptome profiling of tobacco (cv Burley 21) root and leaves samples to study plant reponses during water- deficit or drought. Plants were grown in controlled growth chamber conditions and subjected to water deficit condition after 2 weeks.The plants were transferred to empty containers without touching to nullify any possibility of wounding and harvested subsequently. For 0mins, plants were taken out of the well-watered conditions and transfered to empty boxes and immediately harvested for both tissues and hence called 0-min dehydrated tissue. Similarly other time-points were processed( for instance, 20 min of dehydration, plants were dehydrated for 20 min after being taken out from the container and then harvested). Tissues for three biological replicates and 20 plants per biological replicates were collected for each time-point. RNA was isolated from both tissues using RNeasy Kit from Qiagen and quality was accessed with Nano-drop as well as with Agilent-Bioanalyzer using RNA-600 kit. 20ug of sample was processed at Micro Array Facility.
2015-03-31 | E-GEOD-67434 | biostudies-arrayexpress
Project description:Agilent 4x44k tobacco micro array of wild type tobacco, empty vector control, and HC-Pro transgenic tobacco plants. Both 1-month old leaves and flowers were analyzed. Three biological replicates were performed of each sample.
2011-08-10 | E-MEXP-3105 | biostudies-arrayexpress
Project description:We aimed at identifying the genes regulated by wounding in Anopheles gambiae. Gene expression was compared between wounded and non-wounded mosquitoes, 3h after wounding. Wounding was induced by the injection of dsLacZ using a thin glass needle.
2013-06-05 | E-MEXP-3677 | biostudies-arrayexpress