keyword
MENU ▼
Read by QxMD icon Read
search

Eucalyptus grandis

keyword
https://www.readbyqxmd.com/read/28611454/integrated-analysis-and-transcript-abundance-modelling-of-h3k4me3-and-h3k27me3-in-developing-secondary-xylem
#1
Steven G Hussey, Mattheus T Loots, Karen van der Merwe, Eshchar Mizrachi, Alexander A Myburg
Despite the considerable contribution of xylem development (xylogenesis) to plant biomass accumulation, its epigenetic regulation is poorly understood. Furthermore, the relative contributions of histone modifications to transcriptional regulation is not well studied in plants. We investigated the biological relevance of H3K4me3 and H3K27me3 in secondary xylem development using ChIP-seq and their association with transcript levels among other histone modifications in woody and herbaceous models. In developing secondary xylem of the woody model Eucalyptus grandis, H3K4me3 and H3K27me3 genomic spans were distinctly associated with xylogenesis-related processes, with (late) lignification pathways enriched for putative bivalent domains, but not early secondary cell wall polysaccharide deposition...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28546652/chimpanzees-pan-troglodytes-flexibly-use-introduced-species-for-nesting-and-bark-feeding-in-a-human-dominated-habitat
#2
Maureen S McCarthy, Jack D Lester, Craig B Stanford
As habitat loss and fragmentation place growing pressure on endangered nonhuman primate populations, researchers find increasing evidence for novel responses in behavior. In western Uganda between the Budongo and Bugoma Forests, chimpanzees (Pan troglodytes schweinfurthii) inhabit a mosaic landscape comprising forest fragments, human settlements, and agricultural land. We recorded nests and feeding evidence of unhabituated chimpanzees in this region over a 12-mo period. We found extensive evidence of nesting in introduced tree species, including eucalyptus (Eucalyptus grandis), guava (Psidium guajava), cocoa (Theobroma cacao), and Caribbean pine (Pinus caribaea)...
2017: International Journal of Primatology
https://www.readbyqxmd.com/read/28535596/leaf-litter-leachate-concentration-promotes-heterotrophy-in-freshwater-biofilms-understanding-consequences-of-water-scarcity
#3
Aingeru Martínez, John Stephen Kominoski, Aitor Larrañaga
Climate change is increasing overall temporal variability in precipitation resulting in a seasonal water availability, both increasing periods of flooding and water scarcity. During low water availability periods, the concentration of leachates from riparian vegetation increases, subsequently increasing dissolved organic matter (DOM). Moreover, shifts in riparian vegetation by land use changes impact the quantity and quality of DOM. Our objective was to test effects of increasing DOM concentrations from Eucalyptus grandis (one of the most cultivated tree species in the world) leachates on the metabolism (respiration, R; gross primary productivity, GPP) and extracellular enzyme activities (EEAs) of freshwater biofilms...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28532390/comparative-genomics-of-eucalyptus-and-corymbia-reveals-low-rates-of-genome-structural-rearrangement
#4
J B Butler, R E Vaillancourt, B M Potts, D J Lee, G J King, A Baten, M Shepherd, J S Freeman
BACKGROUND: Previous studies suggest genome structure is largely conserved between Eucalyptus species. However, it is unknown if this conservation extends to more divergent eucalypt taxa. We performed comparative genomics between the eucalypt genera Eucalyptus and Corymbia. Our results will facilitate transfer of genomic information between these important taxa and provide further insights into the rate of structural change in tree genomes. RESULTS: We constructed three high density linkage maps for two Corymbia species (Corymbia citriodora subsp...
May 22, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28499078/genome-wide-analysis-of-the-lateral-organ-boundaries-domain-lbd-gene-family-in-eucalyptus-grandis-reveals-members-that-differentially-impact-secondary-growth
#5
Qiang Lu, Fenjuan Shao, Colleen Macmillan, Iain W Wilson, Karen van der Merwe, Steven G Hussey, Alexander A Myburg, Xiaomei Dong, Deyou Qiu
Lateral Organ Boundaries Domain (LBD) proteins are plant-specific transcription factors playing crucial roles in growth and development. However, the function of LBD proteins in Eucalyptus grandis remains largely unexplored. In the present study, LBD genes in E. grandis were identified and characterized using bioinformatics approaches. Gene expression patterns in various tissues and the transcriptional responses of EgLBDs to exogenous hormones were determined by qRT-PCR. Functions of the selected EgLBDs were studied by ectopically overexpressing in a hybrid poplar (Populus alba × Populus glandulosa)...
May 12, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28388878/medium-term-water-deficit-elicits-distinct-transcriptome-responses-in-eucalyptus-species-of-contrasting-environmental-origin
#6
Antanas V Spokevicius, Josquin Tibbits, Philippe Rigault, Marc-Alexandre Nolin, Caroline Müller, Andrew Merchant
BACKGROUND: Climatic and edaphic conditions over geological timescales have generated enormous diversity of adaptive traits and high speciation within the genus Eucalyptus (L. Hér.). Eucalypt species occur from high rainfall to semi-arid zones and from the tropics to latitudes as high as 43°S. Despite several morphological and metabolomic characterizations, little is known regarding gene expression differences that underpin differences in tolerance to environmental change. Using species of contrasting taxonomy, morphology and physiology (E...
April 7, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28369560/seasonality-of-nitrogen-partitioning-non-structural-vs-structural-in-the-leaves-and-woody-tissues-of-tropical-eucalypts-experiencing-a-marked-dry-season
#7
Dominique Gérant, Morgane Pluchon, Louis Mareschal, Lydie Stella Koutika, Daniel Epron, Torgny Näsholm
Numerous studies have shown that internal nitrogen (N) translocation in temperate tree species is governed by photoperiod duration and temperature. For tropical tree species, the seasonality of rainfall is known to affect growth and foliage production, suggesting that efficient internal N recycling also occurs throughout the year. We tested this hypothesis by comparing the N budgets and N partitioning (non-structural vs structural N) in the different organs of 7-year-old Eucalyptus urophylla (S.T. Blake) × E...
March 22, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28349984/evidence-for-salicylic-acid-signalling-and-histological-changes-in-the-defence-response-of-eucalyptus-grandis-to-chrysoporthe-austroafricana
#8
Lizahn Zwart, Dave Kenneth Berger, Lucy Novungayo Moleleki, Nicolaas A van der Merwe, Alexander A Myburg, Sanushka Naidoo
Eucalyptus species are cultivated for forestry and are of economic importance. The fungal stem canker pathogen Chrysoporthe austroafricana causes disease of varying severity on E. grandis. The Eucalyptus grandis-Chrysoporthe austroafricana interaction has been established as a model system for studying Eucalyptus antifungal defence. Previous studies revealed that the phytohormone salicylic acid (SA) affects the levels of resistance in highly susceptible (ZG14) and moderately resistant (TAG5) clones. The aims of this study were to examine histochemical changes in response to wounding and inoculation as well as host responses at the protein level...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28338992/identification-of-the-eucalyptus-grandis-chitinase-gene-family-and-expression-characterization-under-different-biotic-stress-challenges
#9
Peri A Tobias, Nanette Christie, Sanushka Naidoo, David I Guest, Carsten Külheim
Eucalyptus grandis (W. Hill ex Maiden) is an Australian Myrtaceae tree grown for timber in many parts of the world and for which the annotated genome sequence is available. Known to be susceptible to a number of pests and diseases, E. grandis is a useful study organism for investigating defense responses in woody plants. Chitinases are widespread in plants and cleave glycosidic bonds of chitin, the major structural component of fungal cell walls and arthropod exoskeletons. They are encoded by an important class of genes known to be up-regulated in plants in response to pathogens...
May 1, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28304126/transcript-profiling-of-a-novel-plant-meristem-the-monocot-cambium
#10
Matthew Zinkgraf, Suzanne Gerttula, Andrew Groover
While monocots lack the ability to produce a vascular cambium or woody growth, some monocot lineages evolved a novel lateral meristem, the monocot cambium, which supports secondary radial growth of stems. In contrast to the vascular cambium found in woody angiosperm and gymnosperm species, the monocot cambium produces secondary vascular bundles, which have an amphivasal organization of tracheids encircling a central strand of phloem. Currently there is no information concerning the molecular genetic basis of the development or evolution of the monocot cambium...
March 17, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/28279165/root-morphogenic-pathways-in-eucalyptus-grandis-are-modified-by-the-activity-of-protein-arginine-methyltransferases
#11
Krista L Plett, Anita E Raposo, Stephen Bullivant, Ian C Anderson, Sabine C Piller, Jonathan M Plett
BACKGROUND: Methylation of proteins at arginine residues, catalysed by members of the protein arginine methyltransferase (PRMT) family, is crucial for the regulation of gene transcription and for protein function in eukaryotic organisms. Inhibition of the activity of PRMTs in annual model plants has demonstrated wide-ranging involvement of PRMTs in key plant developmental processes, however, PRMTs have not been characterised or studied in long-lived tree species. RESULTS: Taking advantage of the recently available genome for Eucalyptus grandis, we demonstrate that most of the major plant PRMTs are conserved in E...
March 9, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28237845/fuzzy-logic-applied-to-prospecting-for-areas-for-installation-of-wood-panel-industries
#12
Alexandre Rosa Dos Santos, Ewerthon Mattos Paterlini, Nilton Cesar Fiedler, Carlos Antonio Alvares Soares Ribeiro, Alexandre Simões Lorenzon, Getulio Fonseca Domingues, Gustavo Eduardo Marcatti, Nero Lemos Martins de Castro, Thaisa Ribeiro Teixeira, Gleissy Mary Amaral Dino Alves Dos Santos, Ronie Silva Juvanhol, Elvis Ricardo Figueira Branco, Pedro Henrique Santos Mota, Lilianne Gomes da Silva, Daiani Bernardo Pirovani, Waldir Cintra de Jesus, Ana Carolina de Albuquerque Santos, Helio Garcia Leite, Setsuo Iwakiri
Prospecting for suitable areas for forestry operations, where the objective is a reduction in production and transportation costs, as well as the maximization of profits and available resources, constitutes an optimization problem. However, fuzzy logic is an alternative method for solving this problem. In the context of prospecting for suitable areas for the installation of wood panel industries, we propose applying fuzzy logic analysis for simulating the planting of different species and eucalyptus hybrids in Espírito Santo State, Brazil...
May 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28190676/insights-into-temperature-modulation-of-the-eucalyptus-globulus-and-eucalyptus-grandis-antioxidant-and-lignification-subproteomes
#13
Marília Gabriela de Santana Costa, Paulo Mazzafera, Tiago Santana Balbuena
Eucalyptus grandis and Eucalyptus globulus are among the most widely cultivated trees, differing in lignin composition and plantation areas, as E. grandis is mostly cultivated in tropical regions while E. globulus is preferred in temperate areas. As temperature is a key modulator in plant metabolism, a large-scale proteome analysis was carried out to investigate changes in the antioxidant system and the lignification metabolism in plantlets grown at different temperatures. Our strategy allowed the identification of 3111 stem proteins...
May 2017: Phytochemistry
https://www.readbyqxmd.com/read/28113065/allelopathic-effects-of-volatile-organic-compounds-from-eucalyptus-grandis-rhizosphere-soil-on-eisenia-fetida-assessed-using-avoidance-bioassays-enzyme-activity-and-comet-assays
#14
Tang Zhiqun, Zhang Jian, Yu Junli, Wang Chunzi, Zhang Danju
Allelopathy has been identified as an underlying mechanism of detrimental environmental impacts within commercial plantations. Eucalyptus spp. are known to generate huge amounts of volatile organic compounds (VOCs) that can function as phytotoxins and thus inhibit other plants. In the present study, biochemical markers, including activities of acetylcholinesterase (AChE) and oxidative stress enzymes, such as superoxide dismutase (SOD) and glutathione S-transferase (GST), were assayed to assess changes in Eisenia fetida at the physiological level induced by different doses of VOCs as part of an acute toxicity test over 7 and 14-day exposures...
April 2017: Chemosphere
https://www.readbyqxmd.com/read/28025388/nosema-ceranae-winter-control-study-of-the-effectiveness-of-different-fumagillin-treatments-and-consequences-on-the-strength-of-honey-bee-hymenoptera-apidae-colonies
#15
Y Mendoza, S Diaz-Cetti, G Ramallo, E Santos, M Porrini, C Invernizzi
In Uruguay, colonies of honey bees moving to Eucalyptus grandis plantation in autumn habitually become infected with the microsporidian Nosema ceranae , a parasite that attacks the digestive system of bees. Beekeepers attributed to N. ceranae depopulation of the colonies that often occurs at the end of the blooming period, and many use the antibiotic fumagillin to reduce the level of infection. The aim of this study was to compare the effectiveness of four different fumagillin treatments and determine how this antibiotic affects the strength of the colonies during the winter season...
February 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28008326/localization-and-transcriptional-responses-of-chrysoporthe-austroafricana-in-eucalyptus-grandis-identify-putative-pathogenicity-factors
#16
Ronishree Mangwanda, Lizahn Zwart, Nicolaas A van der Merwe, Lucy Novungayo Moleleki, Dave Kenneth Berger, Alexander A Myburg, Sanushka Naidoo
Chrysoporthe austroafricana is a fungal pathogen that causes the development of stem cankers on susceptible Eucalyptus grandis trees. Clones of E. grandis that are partially resistant and highly susceptible have been identified based on the extent of lesion formation on the stem upon inoculation with C. austroafricana. These interactions have been used as a model pathosystem to enhance our understanding of interactions between pathogenic fungi and woody hosts, which may be different to herbaceous hosts. In previous research, transcriptomics of host responses in these two clones to C...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27965702/the-eucalyptus-tonoplast-intrinsic-protein-tip-gene-subfamily-genomic-organization-structural-features-and-expression-profiles
#17
Marcela I Rodrigues, Agnes A S Takeda, Juliana P Bravo, Ivan G Maia
Plant aquaporins are water channels implicated in various physiological processes, including growth, development and adaptation to stress. In this study, the Tonoplast Intrinsic Protein (TIP) gene subfamily of Eucalyptus, an economically important woody species, was investigated and characterized. A genome-wide survey of the Eucalyptus grandis genome revealed the presence of eleven putative TIP genes (referred as EgTIP), which were individually assigned by phylogeny to each of the classical TIP1-5 groups. Homology modeling confirmed the presence of the two highly conserved NPA (Asn-Pro-Ala) motifs in the identified EgTIPs...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27881090/genome-wide-analysis-of-the-tpx2-family-proteins-in-eucalyptus-grandis
#18
Pingzhou Du, Manoj Kumar, Yuan Yao, Qiaoli Xie, Jinyan Wang, Baolong Zhang, Siming Gan, Yuqi Wang, Ai-Min Wu
BACKGROUND: The Xklp2 (TPX2) proteins belong to the microtubule-associated (MAP) family of proteins. All members of the family contain the conserved TPX2 motif, which can interact with microtubules, regulate microtubule dynamics or assist with different microtubule functions, for example, maintenance of cell morphology or regulation of cell growth and development. However, the role of members of the TPX family have not been studied in the model tree species Eucalyptus to date. Here, we report the identification of the members of the TPX2 family in Eucalyptus grandis (Eg) and analyse the expression patterns and functions of these genes...
November 24, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27861954/special-trends-in-cbf-and-dreb2-groups-in-eucalyptus-gunnii-vs-eucalyptus-grandis-suggest-that-cbf-are-master-players-in-the-trade-off-between-growth-and-stress-resistance
#19
Hong C Nguyen, Phi B Cao, Hélène San Clemente, Raphaël Ployet, Fabien Mounet, Nathalie Ladouce, Luc Harvengt, Christiane Marque, Chantal Teulieres
Annotation of the Eucalyptus grandis genome showed a large amplification of the dehydration-responsive element binding 1/C-repeat binding factor (DREB1/CBF) group without recent DREB2 gene duplication compared with other plant species. The present annotation of the CBF and DREB2 genes from a draft of the Eucalyptus gunnii genome sequence reveals at least one additional CBF copy in the E. gunnii genome compared with E. grandis, suggesting that this group is still evolving, unlike the DREB2 group. This study aims to investigate the redundancy/neo- or sub-functionalization of the duplicates and the relative involvement of the two groups in abiotic stress responses in both E...
April 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/27748400/genome-scans-for-divergent-selection-in-natural-populations-of-the-widespread-hardwood-species-eucalyptus-grandis-myrtaceae-using-microsatellites
#20
Zhijiao Song, Miaomiao Zhang, Fagen Li, Qijie Weng, Chanpin Zhou, Mei Li, Jie Li, Huanhua Huang, Xiaoyong Mo, Siming Gan
Identification of loci or genes under natural selection is important for both understanding the genetic basis of local adaptation and practical applications, and genome scans provide a powerful means for such identification purposes. In this study, genome-wide simple sequence repeats markers (SSRs) were used to scan for molecular footprints of divergent selection in Eucalyptus grandis, a hardwood species occurring widely in costal areas from 32° S to 16° S in Australia. High population diversity levels and weak population structure were detected with putatively neutral genomic SSRs...
October 17, 2016: Scientific Reports
keyword
keyword
95553
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"