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Eucalyptus grandis

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https://www.readbyqxmd.com/read/29670606/-acacia-changes-microbial-indicators-and-increases-c-and-n-in-soil-organic-fractions-in-intercropped-eucalyptus-plantations
#1
Arthur P A Pereira, Maurício R G Zagatto, Carolina B Brandani, Denise de Lourdes Mescolotti, Simone R Cotta, José L M Gonçalves, Elke J B N Cardoso
Intercropping forest plantations of Eucalyptus with nitrogen-fixing trees can increase soil N inputs and stimulate soil organic matter (OM) cycling. However, microbial indicators and their correlation in specific fractions of soil OM are unclear in the tropical sandy soils. Here, we examined the microbial indicators associated with C and N in the soil resulting from pure and intercropped Eucalyptus grandis and Acacia mangium plantations. We hypothesized that introduction of A. mangium in a Eucalyptus plantation promotes changes in microbial indicators and increases C and N concentrations on labile fractions of the soil OM, when compared to pure eucalyptus plantations...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29666352/quantitative-trait-loci-mapping-for-stomatal-traits-in-interspecific-hybrids-of-eucalyptus
#2
M Sumathi, V K W Bachpai, B Deeparaj, A Mayavel, Modhumita Ghosh Dasgupta, B Nagarajan, D Rajasugunasekar, V Sivakumar, R Yasodha
Eucalyptus is an important industrial species with tolerance to drought and salt stress. Genetic improvement activities including quantitative trait loci (QTL) mapping for pulping and adventitious rooting traits are in progress, but no information is available on the genomic regions on adaptive traits such as stomatal characteristics. In this study, an interspecific cross between Eucalyptus tereticornis and E. grandis was generated for the development of genetic map and QTL identification for stomatal traits...
March 2018: Journal of Genetics
https://www.readbyqxmd.com/read/29650154/genomic-based-multiple-trait-evaluation-in-eucalyptus-grandis-using-dominant-dart-markers
#3
Eduardo P Cappa, Yousry A El-Kassaby, Facundo Muñoz, Martín N Garcia, Pamela V Villalba, Jaroslav Klápště, Susana N Marcucci Poltri
We investigated the impact of combining the pedigree- and genomic-based relationship matrices in a multiple-trait individual-tree mixed model (a.k.a., multiple-trait combined approach) on the estimates of heritability and on the genomic correlations between growth and stem straightness in an open-pollinated Eucalyptus grandis population. Additionally, the added advantage of incorporating genomic information on the theoretical accuracies of parents and offspring breeding values was evaluated. Our results suggested that the use of the combined approach for estimating heritabilities and additive genetic correlations in multiple-trait evaluations is advantageous and including genomic information increases the expected accuracy of breeding values...
June 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29523839/annotation-of-the-corymbia-terpene-synthase-gene-family-shows-broad-conservation-but-dynamic-evolution-of-physical-clusters-relative-to-eucalyptus
#4
Jakob B Butler, Jules S Freeman, Brad M Potts, René E Vaillancourt, Dario Grattapaglia, Orzenil B Silva-Junior, Blake A Simmons, Adam L Healey, Jeremy Schmutz, Kerrie W Barry, David J Lee, Robert J Henry, Graham J King, Abdul Baten, Mervyn Shepherd
Terpenes are economically and ecologically important phytochemicals. Their synthesis is controlled by the terpene synthase (TPS) gene family, which is highly diversified throughout the plant kingdom. The plant family Myrtaceae are characterised by especially high terpene concentrations, and considerable variation in terpene profiles. Many Myrtaceae are grown commercially for terpene products including the eucalypts Corymbia and Eucalyptus. Eucalyptus grandis has the largest TPS gene family of plants currently sequenced, which is largely conserved in the closely related E...
March 10, 2018: Heredity
https://www.readbyqxmd.com/read/29462854/chemical-composition-of-pyroligneous-acid-obtained-from-eucalyptus-gg100-clone
#5
Alexandre S Pimenta, Maíra Fasciotti, Thays V C Monteiro, Kássio M G Lima
The present study aimed to characterize the chemical composition of pyroligneous acid (PA) obtained from slow pyrolysis of the clone GG100 of Eucalyptus urophylla × Eucalyptus grandis . The efficiency of extraction of organic compounds by using different solvents-dichloromethane (DCM), diethyl ether (DE) and ethyl acetate (EA)-was evaluated. Wood discs were collected and carbonized at a heating rate of 1.25 °C/min until 450 °C. Pyrolysis gases were trapped and condensed, yielding a crude liquid product (CLP), which was refined to obtain pure PA...
February 15, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29424929/three-physiological-parameters-capture-variation-in-leaf-respiration-of-eucalyptus-grandis-as-elicited-by-short-term-changes-in-ambient-temperature-and-differing-nitrogen-supply
#6
Jörg Kruse, Heinz Rennnenberg, Mark A Adams
This study used instantaneous temperature responses of CO2 -respiration to explore temperature acclimation dynamics for Eucalyptus grandis grown with different nitrogen supply. A reduction in ambient temperature from 23°C to 19°C reduced light-saturated photosynthesis by 25% but increased respiratory capacity by 30%. Changes in respiratory capacity were not reversed after temperatures were subsequently increased to 27°C. Temperature sensitivity of respiration measured at prevalent ambient temperature varied little between temperature treatments, but was significantly reduced from ~105 kJ mol-1 when supply of N was weak, to ~70 kJ mol-1 when it was strong...
February 9, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29423752/exogenous-ga3-application-altered-morphology-anatomic-and-transcriptional-regulatory-networks-of-hormones-in-eucalyptus-grandis
#7
Qian-Yu Liu, Guang-Sheng Guo, Zhen-Fei Qiu, Xiao-Dan Li, Bing-Shan Zeng, Chun-Jie Fan
Gibberellins (GAs) play a key role in plant growth and development including cell elongation, cell expansion, and xylem differentiation. Eucalyptus are the world's most widely planted hardwood trees providing fiber and energy. However, the roles of GAs in Eucalyptus remain unclear and their effects on xylem development remain to be determined. In this study, E. grandis plants were treated with 0.10 mg L-1 GA3 and/or paclobutrazol (PAC, a GA inhibitor). The growth of shoot and root were recorded, transverse sections of roots and stems were stained using toluidine blue, and expression levels of genes related to hormone response and secondary cell wall biosynthesis were analyzed by quantitative real-time PCR...
February 8, 2018: Protoplasma
https://www.readbyqxmd.com/read/29416547/tree-species-with-photosynthetic-stems-have-greater-nighttime-sap-flux
#8
Xia Chen, Jianguo Gao, Ping Zhao, Heather R McCarthy, Liwei Zhu, Guangyan Ni, Lei Ouyang
An increasing body of evidence has shown that nighttime sap flux occurs in most plants, but the physiological implications and regulatory mechanism are poorly known. The significance of corticular photosynthesis has received much attention during the last decade, however, the knowledge of the relationship between corticular photosynthesis and nocturnal stem sap flow is limited at present. In this study, we divided seven tree species into two groups according to different photosynthetic capabilities: trees of species with (Castanopsis hystrix, Michelia macclurei, Eucalyptus citriodora, and Eucalyptus grandis × urophylla) and without (Castanopsis fissa, Schima superba, and Acacia auriculiformis) photosynthetic stems, and the sap flux (Js) and chlorophyll fluorescence parameters for these species were measured...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29396525/the-first-identification-of-genomic-loci-in-plants-associated-with-resistance-to-galling-insects-a-case-study-in-eucalyptus-l-h%C3%A3-r-myrtaceae
#9
Miaomiao Zhang, Changpin Zhou, Zhijiao Song, Qijie Weng, Mei Li, Hongxia Ji, Xiaoyong Mo, Huanhua Huang, Wanhong Lu, Jianzhong Luo, Fagen Li, Siming Gan
Genomic loci related with resistance to gall-inducing insects have not been identified in any plants. Here, association mapping was used to identify molecular markers for resistance to the gall wasp Leptocybe invasa in two Eucalyptus species. A total of 86 simple sequence repeats (SSR) markers were screened out from 839 SSRs and used for association mapping in E. grandis. By applying the mixed linear model, seven markers were identified to be associated significantly (P ≤ 0.05) with the gall wasp resistance in E...
February 2, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29362102/genomic-relationships-reveal-significant-dominance-effects-for-growth-in-hybrid-eucalyptus
#10
Biyue Tan, Dario Grattapaglia, Harry X Wu, Pär K Ingvarsson
Non-additive genetic effects can be effectively exploited in control-pollinated families with the availability of genome-wide markers. We used 41,304 SNP markers and compared pedigree vs. marker-based genetic models by analysing height, diameter, basic density and pulp yield for Eucalyptus urophylla × E.grandis control-pollinated families represented by 949 informative individuals. We evaluated models accounting for additive, dominance, and first-order epistatic interactions (additive by additive, dominance by dominance, and additive by dominance)...
February 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29325002/traits-and-trade-offs-in-whole-tree-hydraulic-architecture-along-the-vertical-axis-of-eucalyptus-grandis
#11
Sebastian Pfautsch, Michael J Aspinwall, John E Drake, Larissa Chacon-Doria, Rob J A Langelaan, David T Tissue, Mark G Tjoelker, Frederic Lens
Background and Aims: Sapwood traits like vessel diameter and intervessel pit characteristics play key roles in maintaining hydraulic integrity of trees. Surprisingly little is known about how sapwood traits covary with tree height and how such trait-based variation could affect the efficiency of water transport in tall trees. This study presents a detailed analysis of structural and functional traits along the vertical axes of tall Eucalyptus grandis trees. Methods: To assess a wide range of anatomical and physiological traits, light and electron microscopy was used, as well as field measurements of tree architecture, water use, stem water potential and leaf area distribution...
January 25, 2018: Annals of Botany
https://www.readbyqxmd.com/read/29324770/phosphorus-application-reduces-aluminum-toxicity-in-two-eucalyptus-clones-by-increasing-its-accumulation-in-roots-and-decreasing-its-content-in-leaves
#12
Weichao Teng, Yachao Kang, Wenjuan Hou, Houzhen Hu, Wenji Luo, Jie Wei, Linghui Wang, Boyu Zhang
Under acidic conditions, aluminum (Al) toxicity is an important factor limiting plant productivity; however, the application of phosphorus (P) might alleviate the toxic effects of Al. In this study, seedlings of two vegetatively propagated Eucalyptus clones, E. grandis × E. urophylla 'G9' and E. grandis × E. urophylla 'DH32-29'were subjected to six treatments (two levels of Al stress and three levels of P). Under excessive Al stress, root Al content was higher, whereas shoot and leaf Al contents were lower with P application than those without P application...
2018: PloS One
https://www.readbyqxmd.com/read/29247597/metabolic-responses-of-eucalyptus-species-to-different-temperature-regimes
#13
Joao Benhur Mokochinski, Paulo Mazzafera, Alexandra Christine Helena Frankland Sawaya, Roland Mumm, Ric Cornelis Hendricus de Vos, Robert David Hall
Species and hybrids of Eucalyptus are the world's most widely planted hardwood trees. They are cultivated across a wide range of latitudes and therefore environmental conditions. In this context, comprehensive metabolomics approaches have been used to assess how different temperature regimes may affect the metabolism of three species of Eucalyptus, E. dunnii, E. grandis and E. pellita. Young plants were grown for 53 d in the greenhouse and then transferred to growth chambers at 10°C, 20°C or 30°C for another 7 d...
December 16, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/29151634/fungal-planet-description-sheets-558-624
#14
P W Crous, M J Wingfield, T I Burgess, G E St J Hardy, P A Barber, P Alvarado, C W Barnes, P K Buchanan, M Heykoop, G Moreno, R Thangavel, S van der Spuy, A Barili, S Barrett, S O Cacciola, J F Cano-Lira, C Crane, C Decock, T B Gibertoni, J Guarro, M Guevara-Suarez, V Hubka, M Kolařík, C R S Lira, M E Ordoñez, M Padamsee, L Ryvarden, A M Soares, A M Stchigel, D A Sutton, A Vizzini, B S Weir, K Acharya, F Aloi, I G Baseia, R A Blanchette, J J Bordallo, Z Bratek, T Butler, J Cano-Canals, J R Carlavilla, J Chander, R Cheewangkoon, R H S F Cruz, M da Silva, A K Dutta, E Ercole, V Escobio, F Esteve-Raventós, J A Flores, J Gené, J S Góis, L Haines, B W Held, M Horta Jung, K Hosaka, T Jung, Ž Jurjević, V Kautman, I Kautmanova, A A Kiyashko, M Kozanek, A Kubátová, M Lafourcade, F La Spada, K P D Latha, H Madrid, E F Malysheva, P Manimohan, J L Manjón, M P Martín, M Mata, Z Merényi, A Morte, I Nagy, A-C Normand, S Paloi, N Pattison, J Pawłowska, O L Pereira, M E Petterson, B Picillo, K N A Raj, A Roberts, A Rodríguez, F J Rodríguez-Campo, M Romański, M Ruszkiewicz-Michalska, B Scanu, L Schena, M Semelbauer, R Sharma, Y S Shouche, V Silva, M Staniaszek-Kik, J B Stielow, C Tapia, P W J Taylor, M Toome-Heller, J M C Vabeikhokhei, A D van Diepeningen, N Van Hoa, Van Tri M, N P Wiederhold, M Wrzosek, J Zothanzama, J Z Groenewald
Novel species of fungi described in this study include those from various countries as follows: Australia : Banksiophoma australiensis (incl. Banksiophoma gen. nov.) on Banksia coccinea , Davidiellomyces australiensis (incl. Davidiellomyces gen. nov.) on Cyperaceae , Didymocyrtis banksiae on Banksia sessilis var . cygnorum , Disculoides calophyllae on Corymbia calophylla , Harknessia banksiae on Banksia sessilis , Harknessia banksiae-repens on Banksia repens , Harknessia banksiigena on Banksia sessilis var ...
June 2017: Persoonia
https://www.readbyqxmd.com/read/29095556/antibacterial-and-antifungal-activities-of-pyroligneous-acid-from-wood-of-eucalyptus-urograndis-and-mimosa-tenuiflora
#15
E de Souza Araújo, A S Pimenta, F M C Feijó, R V O Castro, M Fasciotti, T V C Monteiro, K M G de Lima
AIMS: This work aimed to evaluate the antibacterial and antifungal activities of two types of pyroligneous acid (PA) obtained from slow pyrolysis of wood of Mimosa tenuiflora and of a hybrid of Eucalyptus urophylla × Eucalyptus grandis. METHODS AND RESULTS: Wood wedges were carbonized on a heating rate of 1·25°C min-1 until 450°C. Pyrolysis smoke was trapped and condensed to yield liquid products. Crude pyrolysis liquids were bidistilled under 5 mmHg vacuum yielding purified PA...
January 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28938058/the-gall-wasp-leptocybe-invasa-hymenoptera-eulophidae-stimulates-different-chemical-and-phytohormone-responses-in-two-eucalyptus-varieties-that-vary-in-susceptibility-to-galling
#16
X Q Li, Y Z Liu, W F Guo, M K Solanki, Z D Yang, Y Xiang, Z C Ma, Y G Wen
Gall-inducing insects produce various types of galls on plants, but little is known about the gall-induction mechanism of these galling insects. The gall wasp Leptocybe invasa Fisher & LaSalle (Hymenoptera: Eulophidae) forms galls of different sizes on several Eucalyptus species. To clarify the physiological responses of Eucalyptus to L. invasa infestation, we measured the dynamics of nitrogen (N), carbon (C), total phenolics, total tannins and four types of phytohormones (zeatin [Z] + zeatin riboside [ZR], gibberellins [GA], indole-3-acetic acid [IAA] and abscisic acid [ABA]) in galled and ungalled leaf tissues of two Eucalyptus horticultural varieties (DH201-2 [Eucalyptus grandis × Eucalyptus camaldulensis] and EA [Eucalyptus exserta]) with different susceptibility to galling throughout the larval developmental stages...
September 1, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28840501/notes-on-the-occurrence-of-oligonychus-milleri-mcgregor-and-oligonychus-ununguis-jacobi-acari-tetranychidae-in-brazil
#17
E B Castro, O C Zanardi, J Garlet, R Ochoa, R J F Feres
We verified infestation of Oligonychus milleri (McGregor) on plantations of Pinus caribaea (Pinaceae) and of Oligonychus ununguis (Jacobi) on plantations of Eucalyptus urophylla x Eucalyptus grandis (Myrtaceae) in State of Rondônia, Northern region of Brazil. This represents the first record of O. milleri in Brazil. Oligonychus ununguis was recorded previously, on cypress. The damage caused by these two spider mites in the plantations is described herein.
August 24, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28731478/role-of-plant-fungal-nutrient-trading-and-host-control-in-determining-the-competitive-success-of-ectomycorrhizal-fungi
#18
Sara Hortal, Krista Lynn Plett, Jonathan Michael Plett, Tom Cresswell, Mathew Johansen, Elise Pendall, Ian Charles Anderson
Multiple ectomycorrhizal fungi (EMF) compete to colonise the roots of a host plant, but it is not known whether their success is under plant or fungal control, or a combination of both. We assessed whether plants control EMF colonisation by preferentially allocating more carbon to more beneficial partners in terms of nitrogen supply or if other factors drive competitive success. We combined stable isotope labelling and RNA-sequencing approaches to characterise nutrient exchange between the plant host Eucalyptus grandis and three Pisolithus isolates when growing alone and when competing either indirectly (with a physical barrier) or directly...
December 2017: ISME Journal
https://www.readbyqxmd.com/read/28687330/identification-of-peg-induced-water-stress-responsive-transcripts-using-co-expression-network-in-eucalyptus-grandis
#19
Modhumita Ghosh Dasgupta, Veeramuthu Dharanishanthi
Ecophysiological studies in Eucalyptus have shown that water is the principal factor limiting stem growth. Effect of water deficit conditions on physiological and biochemical parameters has been extensively reported in Eucalyptus. The present study was conducted to identify major polyethylene glycol induced water stress responsive transcripts in Eucalyptus grandis using gene co-expression network. A customized array representing 3359 water stress responsive genes was designed to document their expression in leaves of E...
September 5, 2017: Gene
https://www.readbyqxmd.com/read/28686690/shifts-in-the-bacterial-community-composition-along-deep-soil-profiles-in-monospecific-and-mixed-stands-of-eucalyptus-grandis-and-acacia-mangium
#20
Arthur Prudêncio de Araujo Pereira, Pedro Avelino Maia de Andrade, Daniel Bini, Ademir Durrer, Agnès Robin, Jean Pierre Bouillet, Fernando Dini Andreote, Elke Jurandy Bran Nogueira Cardoso
Our knowledge of the rhizosphere bacterial communities in deep soils and the role of Eucalyptus and Acacia on the structure of these communities remains very limited. In this study, we targeted the bacterial community along a depth profile (0 to 800 cm) and compared community structure in monospecific or mixed plantations of Acacia mangium and Eucalyptus grandis. We applied quantitative PCR (qPCR) and sequence the V6 region of the 16S rRNA gene to characterize composition of bacterial communities. We identified a decrease in bacterial abundance with soil depth, and differences in community patterns between monospecific and mixed cultivations...
2017: PloS One
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