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Landscape horticulture

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https://www.readbyqxmd.com/read/29273002/mining-and-expression-analysis-of-candidate-genes-involved-in-regulating-the-chilling-requirement-fulfillment-of-paeonia-lactiflora-hang-baishao
#1
Jiaping Zhang, Danqing Li, Xiaohua Shi, Dong Zhang, Shuai Qiu, Jianfen Wei, Jiao Zhang, Jianghua Zhou, Kaiyuan Zhu, Yiping Xia
BACKGROUND: The artificial enlargement of the planting area and ecological amplitude of ornamentals for horticultural and landscape applications are significant. Herbaceous peony (Paeonia lactiflora Pall.) is a world-famous ornamental with attractive and fragrant flowers and is mainly planted in temperate and cool areas. Comparatively higher winter temperatures in the subtropical and tropical Northern Hemisphere result in a deficit of chilling accumulation for bud dormancy release, which severely hinders "The southward plantation of herbaceous peony"...
December 22, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29198200/selecting-native-perennial-plants-for-ecological-intensification-in-mediterranean-greenhouse-horticulture
#2
E Rodríguez, M González, D Paredes, M Campos, E Benítez
Natural control by predators and parasitoids provides an important and often unnoticed ecosystem service to agricultural landscapes by reducing pest populations in crops. The current model of horticultural intensification in south-eastern Spain produces high yields but has also resulted in a landscape almost completely covered by plastic. Promoting natural areas among greenhouses could enhance biodiversity, by being beneficial insects, and reduce pest pressure outdoors. The first step is to ascertain how pests and their natural enemies (NEs) use Mediterranean vegetation for selecting the best plants for pest suppression outdoors...
December 4, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28992542/de-novo-transcriptome-sequencing-of-camellia-sasanqua-and-the-analysis-of-major-candidate-genes-related-to-floral-traits
#3
Hui Huang, En-Hua Xia, Hai-Bin Zhang, Qiu-Yang Yao, Li-Zhi Gao
Camellia sasanqua is one of the most famous horticultural plants in Camellia (Theaceae) due to its aesthetic appeal as landscape plant. Knowledge regarding the genetic basis of flowering time, floral aroma and color in C. sasanqua is limited, but is essential to breed new varieties with desired floral traits. Here, we described the de novo transcriptome of young leaves, flower buds and flowers of C. sasanqua. A total of 60,127 unigenes were functionally annotated based on the sequence similarity. After analysis, we found that two floral integrator genes, SOC1 and AP1, in flowering time pathway showed evidence of gene family expansion...
November 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28973492/what-limits-the-distribution-of-liriomyza-huidobrensis-and-its-congener-liriomyza-sativae-in-their-native-niche-when-temperature-and-competition-affect-species-distribution-range-in-guatemala
#4
G Rodríguez-Castañeda, C MacVean, C Cardona, A R Hof
Factors limiting distribution range for most species are generally unknown regardless of whether they are native or invasive. We studied factors that could enable or restrict the distribution of two cosmopolitan invasive leafminer fly species, Liriomyza huidobrensis (Blanchard) and Liriomyza sativae (Blanchard) in their native niche. In order to test which ecological and environmental factors affect leafminer distribution we conducted thermal tolerance assays, sampled along elevation gradients and modeled species distribution...
July 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28830561/altered-chromatin-compaction-and-histone-methylation-drive-non-additive-gene-expression-in-an-interspecific-arabidopsis-hybrid
#5
Wangsheng Zhu, Bo Hu, Claude Becker, Ezgi Süheyla Doğan, Kenneth Wayne Berendzen, Detlef Weigel, Chang Liu
BACKGROUND: The merging of two diverged genomes can result in hybrid offspring that phenotypically differ greatly from both parents. In plants, interspecific hybridization plays important roles in evolution and speciation. In addition, many agricultural and horticultural species are derived from interspecific hybridization. However, the detailed mechanisms responsible for non-additive phenotypic novelty in hybrids remain elusive. RESULTS: In an interspecific hybrid between Arabidopsis thaliana and A...
August 22, 2017: Genome Biology
https://www.readbyqxmd.com/read/28800978/modelling-landscape-dynamics-with-lst-in-protected-areas-of-western-ghats-karnataka
#6
T V Ramachandra, Setturu Bharath, Nimish Gupta
Forest ecosystems sustain biota on the earth as they are habitat to diverse biotic species, arrests soil erosion, play a crucial role in water cycle, sequester carbon, and helps in mitigating the impacts of global warming. Large scale land use land cover (LULC) change leading to deforestation is one of the drivers of global climate changes and alteration of biogeochemical cycles with significant consequences in ecosystem services and biodiversity. This has necessitated the investigation of LULC by mapping, monitoring and modelling spatio-temporal patterns and evaluating these in the context of human-environment interactions...
August 8, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28609989/freshwater-fishes-of-northern-australia
#7
Bradley J Pusey, Damien W Burrows, Mark J Kennard, Colton N Perna, Peter J Unmack, Quentin Allsop, Michael P Hammer
Northern Australia is biologically diverse and of national and global conservation signicance. Its ancient landscape contains the world's largest area of savannah ecosystem in good ecological condition and its rivers are largely free-flowing. Agriculture, previously confined largely to open range-land grazing, is set to expand in extent and to focus much more on irrigated cropping and horticulture. Demands on the water resources of the region are thus, inevitably increasing. Reliable information is required to guide and inform development and help plan for a sustainable future for the region which includes healthy rivers that contain diverse fish assemblages...
April 11, 2017: Zootaxa
https://www.readbyqxmd.com/read/28188333/use-of-modern-tomato-breeding-germplasm-for-deciphering-the-genetic-control-of-agronomical-traits-by-genome-wide-association-study
#8
Guillaume Bauchet, Stéphane Grenier, Nicolas Samson, Julien Bonnet, Laurent Grivet, Mathilde Causse
A panel of 300 tomato accessions including breeding materials was built and characterized with >11,000 SNP. A population structure in six subgroups was identified. Strong heterogeneity in linkage disequilibrium and recombination landscape among groups and chromosomes was shown. GWAS identified several associations for fruit weight, earliness and plant growth. Genome-wide association studies (GWAS) have become a method of choice in quantitative trait dissection. First limited to highly polymorphic and outcrossing species, it is now applied in horticultural crops, notably in tomato...
May 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27914350/phosphorus-flows-in-a-peri-urban-region-with-intensive-food-production-a-case-study
#9
S Bittman, S C Sheppard, D Poon, D E Hunt
Excess phosphorus (P) in peri-urban regions is an emerging issue, whereas there is global depletion of quality mined supplies of P. The flow of P across the landscape leading to regional surpluses and deficits is not well understood. We computed a regional P budget with internal P flows in a fairly discreet peri-urban region (Lower Fraser Valley, BC) with closely juxtaposed agricultural and non-agricultural urban ecosystems, in order to clarify the relationship between food production, food consumption and other activities involving use of P (e...
February 1, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/27775975/the-scourge-of-the-spurge-family-an-imitator-of-rhus-dermatitis
#10
Kimberly A Huerth, Jason E Hawkes, Laurence J Meyer, Douglas L Powell
The Euphorbiaceae family (commonly known as "spurge") is a large, diverse, and widely distributed family of plants that encompass around 300 genera and more than 8000 species. Their attractiveness and hearty nature have made them popular for both indoor ornamentation and outdoor landscaping. Despite their ubiquity, the potential to cause irritant contact dermatitis (ICD) is often overlooked in favor of more notorious causes of phytodermatitis, namely, Toxicodendron species and nettles. We examined case reports spanning 40 years and discovered that spurge-induced ICD tends to befall children and middle-aged adults who unwittingly encounter the plant through play or horticulture, respectively...
November 2016: Dermatitis
https://www.readbyqxmd.com/read/27753247/a-perspective-on-management-of-helicoverpa-armigera-transgenic-bt-cotton-ipm-and-landscapes
#11
REVIEW
Sharon Downes, Darren Kriticos, Hazel Parry, Cate Paull, Nancy Schellhorn, Myron P Zalucki
Helicoverpa armigera is a major pest of agriculture, horticulture and floriculture throughout the Old World and recently invaded parts of the New World. We overview of the evolution in thinking about the application of area-wide approaches to assist with its control by the Australian Cotton Industry to highlight important lessons and future challenges to achieving the same in the New World. An over-reliance of broad-spectrum insecticides led to Helicoverpa spp. in Australian cotton rapidly became resistant to DDT, synthetic pyrethroids, organophosphates, carbamates and endosulfan...
March 2017: Pest Management Science
https://www.readbyqxmd.com/read/27249195/epichlo%C3%A3-grass-endophytes-in-sustainable-agriculture
#12
Miia Kauppinen, Kari Saikkonen, Marjo Helander, Anna Maria Pirttilä, Piippa R Wäli
There is an urgent need to create new solutions for sustainable agricultural practices that circumvent the heavy use of fertilizers and pesticides and increase the resilience of agricultural systems to environmental change. Beneficial microbial symbionts of plants are expected to play an important role in integrated pest management schemes over the coming decades. Epichloë endophytes, symbiotic fungi of many grass species, can protect plants against several stressors, and could therefore help to increase the productivity of forage grasses and the hardiness of turf grasses while reducing the use of synthetic pesticides...
February 3, 2016: Nature Plants
https://www.readbyqxmd.com/read/27092160/non-destructive-measurement-of-calcium-and-potassium-in-apple-and-pear-using-handheld-x-ray-fluorescence
#13
Lee A Kalcsits
Calcium and potassium are essential for cell signaling, ion homeostasis and cell wall strength in plants. Unlike nutrients such as nitrogen and potassium, calcium is immobile in plants. Localized calcium deficiencies result in agricultural losses; particularly for fleshy horticultural crops in which elemental imbalances in fruit contribute to the development of physiological disorders such as bitter pit in apple and cork spot in pear. Currently, elemental analysis of plant tissue is destructive, time consuming and costly...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/26626810/determinants-of-recycling-common-types-of-plastic-product-waste-in-environmental-horticulture-industry-the-case-of-georgia
#14
Ting Meng, Anna M Klepacka, Wojciech J Florkowski, Kristine Braman
Environmental horticulture firms provide a variety of commercial/residential landscape products and services encompassing ornamental plant production, design, installation, and maintenance. The companies generate tons of waste including plastic containers, trays, and greenhouse/field covers, creating the need to reduce and utilize plastic waste. Based on survey data collected in Georgia in 2013, this paper investigates determinants of the environmental horticulture firms' recycling decision (plastic containers, flats, and greenhouse poly)...
February 2016: Waste Management
https://www.readbyqxmd.com/read/26504543/understanding-development-and-ripening-of-fruit-crops-in-an-omics-era
#15
REVIEW
Nigel E Gapper, James J Giovannoni, Christopher B Watkins
Next generation sequencing has revolutionized plant biology. Not only has our understanding of plant metabolism advanced using model systems and modern chromatography, but application of 'omics'-based technology has been widely extended to non-model systems as costs have plummeted and efficiency increased. As a result, important fundamental questions relating to important horticultural crops are being answered, and novel approaches with application to industry are in progress. Here we review recent research advances on development and ripening of fruit crops, how next generation sequencing approaches are driving this advance and the emerging future landscape...
2014: Horticulture Research
https://www.readbyqxmd.com/read/26465046/landscape-scale-pest-suppression-is-mediated-by-timing-of-predator-arrival
#16
Alejandro C Costamagna, William N Venables, Nancy A Schellhorn
There is increasing evidence that biological control of agricultural pests is affected by the landscape context, although the mechanisms behind this pattern have received little attention. Ecological theory predicts that one key mechanism mediating successful pest suppression is early predator immigration to agricultural fields. However, the importance of this population process under different landscape contexts remains unknown. Here, we elucidate the relative importance of landscape context and timing of predator immigration on aphid suppression by manipulating exposure to predation in agroecosystems located across a gradient of landscape complexity in a subtropical horticultural region in Australia...
June 2015: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/26312045/cornus%C3%A3-elwinortonii-and-cornus%C3%A3-rutgersensis-cornaceae-new-names-for-two-artificially-produced-hybrids-of-big-bracted-dogwoods
#17
Robert Mattera, Thomas Molnar, Lena Struwe
Big-bracted dogwoods (Cornus sp.) are well-known plants in North America and eastern Asia where they occur as wild, generally spring-flowering understory trees. They are also popular ornamental landscape plants, and many economically important cultivars are propagated and sold across North America, Europe, and Asia. Starting in the late 1960s, Elwin Orton of Rutgers University in New Jersey (USA) utilized three geographically disjunct species of dogwoods, Cornusflorida (eastern North America), Cornusnuttallii (western North America), and Cornuskousa (East Asia), in an extensive interspecific hybridization program...
2015: PhytoKeys
https://www.readbyqxmd.com/read/26248187/molecular-characterization-of-natural-hybrids-formed-between-five-related-indigenous-clade-6-phytophthora-species
#18
Treena I Burgess
Most Phytophthora hybrids characterized to date have emerged from nurseries and managed landscapes, most likely generated as a consequence of biological invasions associated with the movement of living plants and germplasm for ornamental, horticultural and agricultural purposes. Presented here is evidence for natural hybridization among a group of five closely related indigenous clade 6 Phytophthora species isolated from waterways and riparian ecosystems in Western Australia. Molecular characterization of hybrids consisted of cloning and sequencing two nuclear genes (ITS and ASF), sequencing of two further nuclear loci (BT and HSP) and of two mitochondrial loci (COI and NADH)...
2015: PloS One
https://www.readbyqxmd.com/read/25876628/investigating-the-impacts-of-recycled-water-on-long-lived-conifers
#19
Lloyd L Nackley, Corey Barnes, Lorence R Oki
Recycled wastewater is a popular alternative water resource. Recycled water typically has higher salinity than potable water and therefore may not be an appropriate water source for landscapes planted with salt-intolerant plant species. Coast redwoods (Sequoia sempervirens) are an important agricultural, horticultural and ecological species assumed to be salt intolerant. However, no studies have analysed how salinity impacts coast redwood growth. To determine salt-related growth limitations, as well as susceptibility to particular salt ions, we divided 102 S...
2015: AoB Plants
https://www.readbyqxmd.com/read/25505544/honeybee-nutrition-is-linked-to-landscape-composition
#20
Philip Donkersley, Glenn Rhodes, Roger W Pickup, Kevin C Jones, Kenneth Wilson
Declines in insect pollinators in Europe have been linked to changes in land use. Pollinator nutrition is dependent on floral resources (i.e., nectar and pollen), which are linked to landscape composition. Here, we present a stratified analysis of the nutritional composition of beebread in managed honeybee hives with a view to examining potential sources of variation in its nutritional composition. Specifically, we tested the hypothesis that beebread composition correlates with local land use and therefore available floral resources...
November 2014: Ecology and Evolution
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