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9 results for “Ulmus pumila”
Supplementary material 1 from: Hirsch H, Wypior C, von Wehrden H, Wesche K, Renison D, Hensen I (2012) Germination performance of native and non-native Ulmus pumila populations. NeoBiota 15: 53-68. https://doi.org/10.3897/neobiota.15.4057
Location and climate information of the sampled Ulmus pumila populations in China and the U.S. Maximum (max.) temperatures for the months May, June and July are provided to show the temperature range during the main germination period (lowest and highest values are italicized). Climatic information was extracted from the WORLDCLIM database (Hijmans et al. 2005).
Supplementary material 2 from: Hirsch H, Wypior C, von Wehrden H, Wesche K, Renison D, Hensen I (2012) Germination performance of native and non-native Ulmus pumila populations. NeoBiota 15: 53-68. https://doi.org/10.3897/neobiota.15.4057
Comparison of climatic conditions (a: mean annual temperature; b: annual precipitation) between the Chinese and North American locations of Ulmus pumila. Wilcoxon rank sum tests were used to test for differences between both ranges. Mean annual temperatures are significantly higher for locations from the U.S. (W = 7, p < 0.05). Annual precipitation is marginal higher in the invasive populations compared to the native populations (W = 9, p = 0.05). Significant differences are symbolized by different lowercases above the boxes.
Dynamic physiological and transcriptome changes reveal a po-tential relationship between the circadian clock and salt stress response in Ulmus pumila
<p>Despite the important role the circadian clock plays in numerous critical physiological responses in plants, such as hypocotyl elongation, leaf movement, stomatal opening, flowering, and stress responses, there have been no investigations into the effect of the circadian clock on physiological and transcriptional networks under salt stress. <em>Ulmus pumila</em> L.—a major tree species used for timber, shelter, food, medicine, fodder, and ecological protection—has been reported to tolerate 100~150 mM NaCl treatment. We performed a time-course physiological and transcriptome analysis of 2-years-old <em>U. pumila</em> seedlings under salt treatment to dissect the physiological regulation and potential relationship between the circadian clock and the salt stress response. Seedlings in 150 mM NaCl treatment exhibited salt-induced physiological enhancement compared to the control group. A total of 7,009 unigenes were identified under salt stress, of which 283 unigenes were identified as circadian rhythm genes and 16 unigenes were differentially expressed (circadian rhythm-related DEGs). Further analysis of dynamic expression changes revealed that DEGs involved in four crucial pathways—photosynthesis, thiamine metabolism, abscisic acid synthesis and metabolism, and the hormone-MAPK signal crosstalk pathway—are closely related to the circadian clock. Finally, we constructed a co-expression network between the circadian clock and these four crucial pathways. Our results help shed light on the molecular link between the circadian clock and salt stress tolerance in <em>U. pumila</em>.</p>
Ulmus pumila (Ulmaceae) - whole tree (or vine) - general
Image of Ulmus pumila (Ulmaceae) - whole tree (or vine) - general
Ulmus pumila (Ulmaceae) - whole tree (or vine) - general
Image of Ulmus pumila (Ulmaceae) - whole tree (or vine) - general
Cedar Creek Ecosystem Science Reserve site, station Old Field 41 at Cedar Creek, study of plant cover of Ulmus pumila in units of percent on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Cedar Creek Ecosystem Science Reserve (CDR) contains plant cover of Ulmus pumila measurements in percent units and were aggregated to a yearly timescale.
Data from: Germination performance of native and non-native Ulmus pumila populations
Germination is a crucial step for invasive plants to extend their distribution under different environmental conditions in a new range. Therefore, information on germination characteristics of invasive plant species provides invaluable knowledge about the factors which might contribute to the invasion success. Moreover, intra-specific comparisons under controlled conditions will show if different responses between non-native and native populations are caused by evolutionary changes or by phenotypic plasticity towards different environmental influences. This paper focuses on the germination of native and non-native Ulmus pumila populations. We expected that non-native populations would be characterized by their higher final germination percentage and enhanced germination rate, which might indicate an influence due to corresponding climatic conditions. Germination experiments with a moderate and a warm temperature treatment did not reveal significant differences in final germination percentage. However, seeds from the North American non-native range germinated significantly faster than native seeds (p < 0.001). Additionally, mean time to germination in both ranges was significantly negatively correlated with annual precipitation (p = 0.022). At the same time, this relationship is stronger in the native range whereas mean time to germination in non-native populations seems to be less influenced by climatic conditions. Different germination responses of the North American populations could be caused by a fast evolutionary change mediating a higher tolerance to current climatic conditions in the non-native range. However, our findings could also be caused by artificial selection during the introduction process and extensive planting of Ulmus pumila in its non-native range. Nevertheless, we assume that the faster germination rate of non-native populations is one potential explanation for the invasion success of Ulmus pumila in its new range since it might provide a competitive advantage during colonization of new sites.
Data from: Germination performance of native and non-native Ulmus pumila populations
Open the record for dataset details and reuse information.
Identification of microRNAs and Their Targets in Ulmus pumila under Salt Stress by High-Throughput Sequencing
GEO Series GSE84937. Ulmus pumila. 3 samples. Type: Non-coding RNA profiling by high throughput sequencing.
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