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https://www.readbyqxmd.com/read/29484957/occupational-predictors-of-urinary-dialkyl-phosphate-concentrations-in-mexican-flower-growers
#1
Clemente Aguilar-Garduño, Julia Blanco-Muñoz, Karina Roxana Antonio, Consuelo Escamilla-Nuñez, Cuauhtémoc A Juárez-Pérez, Astrid Schilmann, Mariano E Cebrian, Marina Lacasaña
Background Flower growers have high potential for exposures to pesticides. Occupational factors, such as tasks performed, the production method (organic or conventional), the use of personal protective equipment (PPE), and workplace characteristics influence the intensity of pesticide exposure. Objective To evaluate occupational characteristics affecting urinary concentration of dialkylphosphate (DAP) metabolites of organophosphate pesticides among a group of Mexican floricultural workers. Methods A questionnaire was administered to 117 workers who also provided a first morning urine sample...
February 27, 2018: International Journal of Occupational and Environmental Health
https://www.readbyqxmd.com/read/29362082/molecular-characterization-of-a-double-flower-mutation-in-matthiola-incana
#2
Takashi Nakatsuka, Kanae Koishi
The double flower is one of the most important traits in the floricultural plant Matthiola incana. Although a "doubleness" locus (S/s) was defined by genetic analysis a century ago, the gene responsible for double flowers has not been identified in M. incana. We isolated MiAG from M. incana cultivars, and its sequence and genomic structure were found to be highly similar to the AGAMOUS gene in Arabidopsis. Two independent mutated alleles miag1 and miag2 were identified from the double-flowered individuals of M...
March 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29196232/integration-of-microbial-biopesticides-in-greenhouse-floriculture-the-canadian-experience
#3
REVIEW
Michael Brownbridge, Rose Buitenhuis
Historically, greenhouse floriculture has relied on synthetic insecticides to meet its pest control needs. But, growers are increasingly faced with the loss or failure of synthetic chemical pesticides, declining access to new chemistries, stricter environmental/health and safety regulations, and the need to produce plants in a manner that meets the 'sustainability' demands of a consumer driven market. In Canada, reports of thrips resistance to spinosad (Success™) within 6-12 months of its registration prompted a radical change in pest management philosophy and approach...
November 28, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29163615/assessing-the-pathogenic-ability-of-ralstonia-pseudosolanacearum-ralstonia-solanacearum-phylotype-i-from-ornamental-rosa-spp-plants
#4
Napoleon N A Tjou-Tam-Sin, Jeroen L J van de Bilt, Marcel Westenberg, Peggy P M A Gorkink-Smits, N Marco Landman, Maria Bergsma-Vlami
Ralstonia pseudosolanacearum ( Ralstonia solanacearum phylotype I) isolates found in stunted, yellowing, and wilted ornamental rose ( Rosa spp.) were assessed for their pathogenic ability in two rose cultivars (cv. "Armando" and cv. "Red Naomi") and in four solanaceous crops: tomato ( Solanum lycopersicum cv. "Money Maker"), tobacco ( Nicotiana tabacum cv. "White Burley"), eggplant ( Solanum melongena cv. "Black Beauty") and sweet pepper ( Capsicum annum cv...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29052146/enzymatic-activity-induction-of-gst-family-isoenzymes-from-pesticide-mixture-used-in-floriculture
#5
Fernando Mejia-Sanchez, Laura Patricia Montenegro-Morales, Julieta Castillo-Cadena
Glutathione S-transferases (GSTs) comprise a number of genes that codify for a group of isoenzymes that participate in phase II xenobiotic detoxification by means of conjugation with glutathione, producing hydrosoluble compounds. It has been demonstrated that some pesticides are substrates for GST isoenzymes. Floriculture is one of the main economic activities in the municipalities of Villa Guerrero and Atlacomulco; pesticides, applied as mixtures, are intensively used in this activity. In this study, total GST enzymatic activity and glutathione S-transferases theta 1 (GSTT1) enzymatic activity were calculated for a group of floriculture workers exposed to pesticides and for an unexposed group...
January 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28638874/the-use-of-plants-to-protect-plants-and-food-against-fungal-pathogens-a-review
#6
REVIEW
D S S Shuping, J N Eloff
BACKGROUND: Plant fungal pathogens play a crucial role in the profitability, quality and quantity of plant production. These phytopathogens are persistent in avoiding plant defences causing diseases and quality losses around the world that amount to billions of US dollars annually. To control the scourge of plant fungal diseases, farmers have used fungicides to manage the damage of plant pathogenic fungi. Drawbacks such as development of resistance and environmental toxicity associated with these chemicals have motivated researchers and cultivators to investigate other possibilities...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28597440/efficient-and-heritable-transformation-of-phalaenopsis-orchids
#7
Hong-Xian Hsing, Yi-Jyun Lin, Chii-Gong Tong, Min-Jeng Li, Yun-Jin Chen, Swee-Suak Ko
BACKGROUND: Phalaenopsis orchid (Phal. orchid) is visually attractive and it is important economic floriculture species. Phal. orchids have many unique biological features. However, investigation of these features and validation on their biological functions are limited due to the lack of an efficient transformation method. RESULTS: We developed a heritable and efficient Agrobacterium- mediated transformation using protocorms derived from tetraploid or diploid Phal...
December 2016: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28473834/biotechnological-advancements-for-improving-floral-attributes-in-ornamental-plants
#8
REVIEW
Ali Noman, Muhammad Aqeel, Jianming Deng, Noreen Khalid, Tayyaba Sanaullah, He Shuilin
Developing new ornamental cultivars with improved floral attributes is a major goal in floriculture. Biotechnological approach together with classical breeding methods has been used to modify floral color, appearance as well as for increasing disease resistance. Transgenic strategies possess immense potential to produce novel flower phenotypes that are not found in nature. Adoption of Genetic engineering has supported the idea of floral trait modification. Ornamental plant attributes like floral color, fragrance, disease resistance, and vase life can be improved by means of genetic manipulation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28448812/effect-of-exposure-to-p-p%C3%A2-dde-during-the-first-half-of-pregnancy-in-the-maternal-thyroid-profile-of-female-residents-in-a-mexican-floriculture-area
#9
José Ángel Hernández-Mariano, Luisa Torres-Sánchez, Susana Bassol-Mayagoitia, Maria Consuelo Escamilla-Nuñez, Mariano E Cebrian, Érika Adriana Villeda-Gutiérrez, Guadalupe López-Rodríguez, Eunice Elizabeth Félix-Arellano, Julia Blanco-Muñoz
BACKGROUND: Dichlorodiphenyldichloroethene (p,p´-DDE), the main metabolite of dichlorodiphenyltrichloroethane (DDT), has been associated with changes in human thyroid hormone levels. Maternal thyroid hormones are essential for adequate fetal neurodevelopment during the first half of pregnancy. OBJECTIVE: To evaluate the association between maternal p,p´-DDE concentration and the maternal thyroid profile during the first half of pregnancy. MATERIALS AND METHODS: We analyzed the information of 430 pregnant women from a Mexican floriculture area, with a gestational age ≤16 weeks...
July 2017: Environmental Research
https://www.readbyqxmd.com/read/28360398/nucleotide-diversity-and-phylogenetic-relationships-among-gladiolus-cultivars-and-related-taxa-of-family-iridaceae
#10
Niraj Singh, Baleshwar Meena, Ashish Kumar Pal, Roop Kumar Roy, Sri Krishna Tewari, Sushma Tamta, Tikam Singh Rana
The plastid genome regions of two intergenic spacers, psbA-trnH and trnL-trnF, were sequenced to study the nucleotide diversity and phylogenetic relationships among Gladiolus cultivars. Nucleotide diversity of psbA-trnH region was higher than trnL-trnF region of chloroplast. We employed Bayesian, maximum parsimony (MP) and neighbour-joining (NJ) approaches for phylogenetic analysis of Gladiolus and related taxa using combined datasets from chloroplast genome. The psbA-trnH and trnL-trnF intergenic spacers of Gladiolus and related taxa-like Babiana, Chasmanthe, Crocus, Iris, Moraea, Sisyrinchium, Sparaxis and two out group species (Hymenocallis littoralis and Asphodeline lutea) were used in the present investigation...
March 2017: Journal of Genetics
https://www.readbyqxmd.com/read/28315232/land-use-change-in-indian-tropical-agro-ecosystems-eco-energy-estimation-for-socio-ecological-sustainability
#11
Sunil Nautiyal, Harald Kaechele, M S Umesh Babu, Pavan Tikhile, Sangeeta Baksi
This study was carried out to understand the ecological and economic sustainability of floriculture and other main crops in Indian agro-ecosystems. The cultivation practices of four major flower crops, namely Jasminum multiflorum, Crossandra infundibuliformis, Chrysanthemum and Tagetes erecta, were studied in detail. The production cost of flowers in terms of energy was calculated to be 99,622-135,996 compared to 27,681-69,133 MJ ha(-1) for the main crops, namely Oryza sativa, Eleusine coracana, Zea mays and Sorghum bicolor...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28188819/potential-short-term-neurobehavioral-alterations-in-children-associated-with-a-peak-pesticide-spray-season-the-mother-s-day-flower-harvest-in-ecuador
#12
Jose R Suarez-Lopez, Harvey Checkoway, David R Jacobs, Wael K Al-Delaimy, Sheila Gahagan
BACKGROUND: Exposures to cholinesterase inhibitor pesticides (e.g. organophosphates) have been associated with children's neurobehavioral alterations, including attention deficit and impulsivity. Animal studies have observed transient alterations in neurobehavioral performance in relation to cholinesterase inhibitor pesticide exposures; however, limited evidence exists regarding transient effects in humans. METHODS: We estimated the associations between neurobehavioral performance and time after Mother's Day flower harvest (the end of a heightened pesticide usage period) among 308 4-to 9-year-old children living in floricultural communities in Ecuador in 2008 who participated in the ESPINA study...
May 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28124266/congenital-malformations-according-to-etiology-in-newborns-from-the-floricultural-zone-of-mexico-state
#13
Julieta Castillo-Cadena, Fernando Mejia-Sanchez, Jerónimo Amado López-Arriaga
Birth defects are the number one cause of child mortality worldwide and in 2010 it was the second cause in Mexico. Congenital malformations are a public health issue, because they cause infant mortality, chronic disease and disability. The origin can be genetic, environmental or unknown causes. Among environmental contaminants, pesticides stand out. In this study, we determine the frequency and etiology of congenital malformations in newborns (NBs) of a floricultural community and we compare it with that in the urban community...
March 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27894686/the-use-of-the-lymphocyte-cytokinesis-block-micronucleus-assay-for-monitoring-pesticide-exposed-populations
#14
REVIEW
Claudia Bolognesi, Nina Holland
Pesticides are widely used around the world, and hundreds of millions of people are exposed annually in occupational and environmental settings. Numerous studies have demonstrated relationships between pesticide exposure and increased risk of cancers, neurodegenerative and neurodevelopmental disorders, respiratory diseases and diabetes. Assessment of genotoxicity of pesticides and biomonitoring their effect in exposed populations is critical for a better regulation and protection, but it can be complicated because pesticides are often used as complex mixtures...
October 2016: Mutation Research
https://www.readbyqxmd.com/read/27824041/genome-sequence-and-analysis-of-the-japanese-morning-glory-ipomoea-nil
#15
Atsushi Hoshino, Vasanthan Jayakumar, Eiji Nitasaka, Atsushi Toyoda, Hideki Noguchi, Takehiko Itoh, Tadasu Shin-I, Yohei Minakuchi, Yuki Koda, Atsushi J Nagano, Masaki Yasugi, Mie N Honjo, Hiroshi Kudoh, Motoaki Seki, Asako Kamiya, Toshiyuki Shiraki, Piero Carninci, Erika Asamizu, Hiroyo Nishide, Sachiko Tanaka, Kyeung-Il Park, Yasumasa Morita, Kohei Yokoyama, Ikuo Uchiyama, Yoshikazu Tanaka, Satoshi Tabata, Kazuo Shinozaki, Yoshihide Hayashizaki, Yuji Kohara, Yutaka Suzuki, Sumio Sugano, Asao Fujiyama, Shigeru Iida, Yasubumi Sakakibara
Ipomoea is the largest genus in the family Convolvulaceae. Ipomoea nil (Japanese morning glory) has been utilized as a model plant to study the genetic basis of floricultural traits, with over 1,500 mutant lines. In the present study, we have utilized second- and third-generation-sequencing platforms, and have reported a draft genome of I. nil with a scaffold N50 of 2.88 Mb (contig N50 of 1.87 Mb), covering 98% of the 750 Mb genome. Scaffolds covering 91.42% of the assembly are anchored to 15 pseudo-chromosomes...
November 8, 2016: Nature Communications
https://www.readbyqxmd.com/read/27812549/production-of-virus-free-orchid-cymbidium-aloifolium-l-sw-by-various-tissue-culture-techniques
#16
Shreeti Pradhan, Tripti Regmi, Mukunda Ranjit, Bijaya Pant
Orchids are affected by many viruses resulting in poor growth, yield and quality, and an overall decline in population. Cymbidium mosaic virus (CymMV) is one of the common orchid viruses found in Cymbidium species but it infects different orchid genera. In this study Cymbidium aloifolium was propagated in vitro using MS medium at different strength (1.0, ½, and ¼) with or without 0.5 mg/l BAP (6-benzylaminopurine) and 0.5 mg/l NAA (Naphthalene acetic acid). To provide disease-free planting material, source plant for in vitro propagation needs to be screened for pathogenic viruses...
October 2016: Heliyon
https://www.readbyqxmd.com/read/27765992/evaluation-of-steam-and-soil-solarization-for-meloidogyne-arenaria-control-in-florida-floriculture-crops
#17
Nancy Kokalis-Burelle, Erin N Rosskopf, David M Butler, Steven A Fennimore, John Holzinger
Steam and soil solarization were investigated for control of the root-knot nematode Meloidogyne arenaria in 2 yr of field trials on a commercial flower farm in Florida. The objective was to determine if preplant steam treatments in combination with solarization, or solarization alone effectively controlled nematodes compared to methyl bromide (MeBr). Trials were conducted in a field with naturally occurring populations of M. arenaria. Treatments were solarization alone, steam treatment after solarization using standard 7...
September 2016: Journal of Nematology
https://www.readbyqxmd.com/read/27753247/a-perspective-on-management-of-helicoverpa-armigera-transgenic-bt-cotton-ipm-and-landscapes
#18
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/27609470/rnai-induced-silencing-in-floral-tissues-of-petunia-hybrida-by-agroinfiltration-a-rapid-assay-for-chalcone-isomerase-gene-function-analysis
#19
F Keykha, A Bagheri, N Moshtaghi, A R Bahrami, A Sharifi
Variegation in flower color is commonly observed in many plant species and also occurs on Petunia (Petunia hybrida) as an ornamental plant. Variegated plants are of highly valuable in the floricultural market. Agroinfiltration is an Agrobacterium-mediated transient assay for the analysis of gene function and genetic modification in leaves, flowers and fruit tissues of various plants. Transient RNAi-induced silencing by agroinfiltration has been developed in leaves and fruits of several plant species. Here we report the establishment of a transient hairpin RNAi-induced silencing system for color modification assay in floral tissues of Petunia with different colors...
August 31, 2016: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/27396521/current-status-and-biotechnological-advances-in-genetic-engineering-of-ornamental-plants
#20
REVIEW
Pejman Azadi, Hedayat Bagheri, Ayoub Molaahmad Nalousi, Farzad Nazari, Stephen F Chandler
Cut flower markets are developing in many countries as the international demand for cut flowers is rapidly growing. Developing new varieties with modified characteristics is an important aim in floriculture. Production of transgenic ornamental plants can shorten the time required in the conventional breeding of a cultivar. Biotechnology tools in combination with conventional breeding methods have been used by cut flower breeders to change flower color, plant architecture, post-harvest traits, and disease resistance...
November 1, 2016: Biotechnology Advances
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