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https://www.readbyqxmd.com/read/28204897/characterization-of-tomato-apical-stunt-viroid-isolated-from-a-24-year-old-seed-lot-of-capsicum-annuum
#1
J Th J Verhoeven, H M S Koenraadt, M Westenberg, J W Roenhorst
Tomato apical stunt viroid (TASVd) has been identified in a 24-year old seed lot of Capsicum annuum produced in Taiwan. It is the first finding of TASVd in this plant species. The isolate could be discriminated from all reported isolates of TASVd based on its nucleotide sequence, which showed only 94.8% identity with the most related genotype of TASVd. This discrimination was substantiated by phylogenetic analysis. Inoculation of a RNA extract of contaminated seeds to healthy pepper plants showed that the infectivity of the viroid had remained over time...
February 15, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28176460/application-of-bacteria-from-non-cultivated-plants-to-promote-growth-alter-root-architecture-and-alleviate-salt-stress-of-cotton
#2
Ivelisse Irizarry, James F White
AIMS: Cotton seeds are frequently treated with acid to remove fibers and reduce seed-transmitted diseases. This process also eliminates beneficial bacteria on the seed surface. The goal of this research was to seek and apply beneficial bacteria to acid delinted cotton seeds to evaluate their growth promoting and salt stress alleviating effects in seedlings. METHODS AND RESULTS: Bacteria were isolated from non-cultivated plants in the Malvaceae. Seeds were collected from Portia tree (Thespesia populnea) and wild cotton (Gossypium hirsutum) from coastal and arid areas of Puerto Rico...
February 7, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28176454/saturated-genic-snp-mapping-identified-functional-candidates-and-selection-tools-for-the-pinus-monticola-cr2-locus-controlling-resistance-to-white-pine-blister-rust
#3
Jun-Jun Liu, Richard A Sniezko, Arezoo Zamany, Holly Williams, Ning Wang, Angelia Kegley, Douglas P Savin, Hao Chen, Rona N Sturrock
Molecular breeding incorporates efficient tools to increase rust resistance in five-needle pines. Susceptibility of native five-needle pines to white pine blister rust (WPBR), caused by the non-native invasive fungus Cronartium ribicola (J.C.Fisch.), has significantly reduced wild populations of these conifers in North America. Major resistance (R) genes against specific avirulent pathotypes have been found in several five-needle pine species. In this study we screened genic SNP markers by comparative transcriptome and genetic association analyses and constructed saturated linkage maps for the western white pine (Pinus monticola) R locus (Cr2)...
February 7, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28168528/rapid-start-up-of-nitrifying-mbbrs-at-low-temperatures-nitrification-biofilm-response-and-microbiome-analysis
#4
Bradley Young, Robert Delatolla, Turki Abujamel, Kevin Kennedy, Edith Laflamme, Alain Stintzi
The moving bed biofilm reactor (MBBR), operated as a post carbon removal system, requires long start-up times in comparison to carbon removal systems due to slow growing autotrophic organisms. This study investigates the use of carriers seeded in a carbon rich treatment system prior to inoculation in a nitrifying MBBR system to promote the rapid development of nitrifying biofilm in an MBBR system at temperatures between 6 and 8 °C. Results show that nitrification was initiated by the carbon removal carriers after 22 h of operation...
February 6, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28167883/enhancement-of-seed-dehiscence-by-seed-treatment-with-talaromyces-flavus-gg01-and-gg04-in-ginseng-panax-ginseng
#5
Min-Jeong Kim, Chang-Ki Shim, Yong-Ki Kim, Sung-Jun Hong, Jong-Ho Park, Eun-Jung Han, Seok-Cheol Kim
Seed dehiscence of ginseng (Panax ginseng C. A. Mayer) is affected by moisture, temperature, storage conditions and microbes. Several microbes were isolated from completely dehisced seed coat of ginseng cultivars, Chunpoong and Younpoong at Gumsan, Korea. We investigated the potential of five Talaromyces flavus isolates from the dehiscence of ginseng seed in four traditional stratification facilities. The isolates showed antagonistic activities against fungal plant pathogens, such as Cylindrocarpon destructans, Fusarium oxysporum, Rhizoctonia solani, Sclerotinia nivalis, Botrytis cinerea, and Phytophthora capsici...
February 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28163703/microbial-interactions-in-the-phyllosphere-increase-plant-performance-under-herbivore-biotic-stress
#6
Muhammad Saleem, Nicole Meckes, Zahida H Pervaiz, Milton B Traw
The phyllosphere supports a tremendous diversity of microbes and other organisms. However, little is known about the colonization and survival of pathogenic and beneficial bacteria alone or together in the phyllosphere across the whole plant life-cycle under herbivory, which hinders our ability to understand the role of phyllosphere bacteria on plant performance. We addressed these questions in experiments using four genetically and biogeographically diverse accessions of Arabidopsis thaliana, three ecologically important bacterial strains (Pseudomonas syringae DC3000, Xanthomonas campestris, both pathogens, and Bacillus cereus, plant beneficial) under common garden conditions that included fungus gnats (Bradysia spp...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28163589/development-of-plants-resistant-to-papaya-leaf-distortion-mosaic-virus-by-intergeneric-hybridization-between-carica-papaya-and-vasconcellea-cundinamarcensis
#7
Kazuhiko Tarora, Ayano Shudo, Shinji Kawano, Keiji Yasuda, Hiroki Ueno, Hideo Matsumura, Naoya Urasaki
In this study, we confirmed that Vasconcellea cundinamarcensis resists Papaya leaf distortion mosaic virus (PLDMV), and used it to produce intergeneric hybrids with Carica papaya. From the cross between C. papaya and V. cundinamarcensis, we obtained 147 seeds with embryos. Though C. papaya is a monoembryonic plant, multiple embryos were observed in all 147 seeds. We produced 218 plants from 28 seeds by means of embryo-rescue culture. All plants had pubescence on their petioles and stems characteristic of V...
December 2016: Breeding Science
https://www.readbyqxmd.com/read/28148979/development-of-mesorhizobium-ciceri-based-biofilms-and-analyses-of-their-antifungal-and-plant-growth-promoting-activity-in-chickpea-challenged-by-fusarium-wilt
#8
Krishnashis Das, Mahendra Vikram Singh Rajawat, Anil Kumar Saxena, Radha Prasanna
Biofilmed biofertilizers have emerged as a new improved inoculant technology to provide efficient nutrient and pest management and sustain soil fertility. In this investigation, development of a Trichoderma viride-Mesorhizobium ciceri biofilmed inoculant was undertaken, which we hypothesized, would possess more effective biological nitrogen fixing ability and plant growth promoting properties. As a novel attempt, we selected Mesorhizobium ciceri spp. with good antifungal attributes with the assumption that such inoculants could also serve as biocontrol agents...
March 2017: Indian Journal of Microbiology
https://www.readbyqxmd.com/read/28144803/effect-of-petroleum-derived-substances-on-life-history-traits-of-black-bean-aphid-aphis-fabae-scop-and-on-the-growth-and-chemical-composition-of-broad-bean
#9
Milena Rusin, Janina Gospodarek, Aleksandra Nadgórska-Socha, Gabriela Barczyk
The aim of the study was to determine the effects of various petroleum-derived substances, namely petrol, diesel fuel and spent engine oil, on life history traits and population dynamics of the black bean aphid Aphis fabae Scop. and on growth and chemical composition of its host plant Vicia faba L. Each substance was tested separately, using two concentrations (9 g kg(-1) and 18 g kg(-1)). The experiment was conducted in four replications (four pots with five plants in each pot per treatment). Plants were cultivated in both control and contaminated soils...
January 31, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28142091/developing-cold-adapted-biomass-for-the-anaerobic-treatment-of-domestic-wastewater-at-low-temperatures-4-8-and-15%C3%A2-%C3%A2-c-with-inocula-from-cold-environments
#10
Evangelos Petropoulos, Jan Dolfing, Russell J Davenport, Emma J Bowen, Thomas P Curtis
Temperature is the bottleneck for the anaerobic treatment of domestic wastewater in temperate climates. Most previous attempts to achieve anaerobic treatment at low temperatures have attempted to acclimatize mesophilic sludge and have failed at temperatures below 10-13 °C. We describe an alternative approach using communities from environments that have been exposed to low temperatures over evolutionary time-scales as seed for such reactors. Batch reactors were inoculated with a mixture of soils and sediments from the high Arctic and an Alpine lake to treat UV-sterilized raw domestic wastewater at 4, 8 and 15 °C...
December 10, 2016: Water Research
https://www.readbyqxmd.com/read/28129468/translocation-of-bacillus-thuringiensis-in-phaseolus-vulgaris-tissues-and-vertical-transmission-in-arabidopsis-thaliana
#11
Rosalina García-Suárez, Luis A Verduzco-Rosas, Ma Cristina Del Rincón-Castro, John Délano-Frier, Jorge E Ibarra
AIMS: To demonstrate the ability of Bacillus thuringiensis to penetrate as spore-crystal complex to the internal tissues of bean plants, and keep its insecticidal activity. To test the vertical transmission of the spore-crystal complex in Arabidopsis thaliana. METHODS AND RESULTS: The experimental strain was transformed with the pMUTIN-gfp plasmid which labeled the spores of B. thuringiensis HD-73 with the GFP protein. Once the rhizosphere of the bean plants was inoculated with the labeled strain, the bacterium was recovered from leaves, stems, and petioles...
January 27, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28122059/effects-of-rhamnolipid-and-microbial-inoculants-on-the-vermicomposting-of-green-waste-with-eisenia-fetida
#12
Xiaoqiang Gong, Le Wei, Xin Yu, Suyan Li, Xiangyang Sun, Xinyu Wang
The effects of adding the biosurfactant rhamnolipid, the lignolytic and cellulolytic fungus Phanerochete chrysosporium, and the free-living nitrogen-fixing bacterium Azotobacter chrococcum on vermicomposting of green waste with Eisenia fetida was investigated. The addition of rhamnolipid and/or either microorganism alone or in all combinations significantly increased E. fetida growth rate, the number of E. fetida juveniles and cocoons, the population densities of cellulolytic fungi and Azotobacter bacteria, and cellulase and urease activities in the vermicomposts...
2017: PloS One
https://www.readbyqxmd.com/read/28121475/inoculating-wheat-triticum-aestivum-l-with-the-endophytic-bacterium-serratia-sp-pw7-to-reduce-pyrene-contamination
#13
Xuezhu Zhu, Wanqing Wang, Kai Sun, Xianghao Lin, Shuang Li, Michael Gatheru Waigi, Wanting Ling
This research was conducted to find an optimal inoculation way for a pyrene-degrading endophytic Serratia sp. PW7 to colonize wheat for reducing pyrene contamination. Three inoculation ways, which are soaking seeds in inocula (TS), dipping roots of seedlings in inocula (TR), and spraying inocula on leaves of seedlings (TL), were used in this study. Inoculated seedlings and non-inoculated seedlings (CK) were respectively cultivated in Hoagland solutions supplemented with pyrene in a growth chamber. The results showed that strain PW7 successfully colonized the inoculated seedlings in high numbers, and significantly promoted the growth of seedlings (TS and TR)...
January 25, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28115905/genetic-diversity-and-symbiotic-efficiency-of-indigenous-common-bean-rhizobia-in-croatia
#14
Ines Pohajda, Katarina Huić Babić, Ivana Rajnović, Sanja Kajić, Sanja Sikora
Nodule bacteria (rhizobia) in symbiotic associations with legumes enable considerable entries of biologically fixed nitrogen into soil. Efforts are therefore made to intensify the natural process of symbiotic nitrogen fixation by legume inoculation. Studies of field populations of rhizobia open up the possibility to preserve and probably exploit some indigenous strains with hidden symbiotic or ecological potentials. The main aim of the present study is to determine genetic diversity of common bean rhizobia isolated from different field sites in central Croatia and to evaluate their symbiotic efficiency and compatibility with host plants...
December 2016: Food Technology and Biotechnology
https://www.readbyqxmd.com/read/28115198/an-insight-into-differentially-regulated-genes-in-resistant-and-susceptible-genotypes-of-potato-in-response-to-tomato-leaf-curl-new-delhi-virus-potato-infection
#15
Arjunan Jeevalatha, Sundaresha Siddappa, Ashwani Kumar, Priyanka Kaundal, Anupama Guleria, Sanjeev Sharma, Mandadi Nagesh, Bir Pal Singh
Apical leaf curl disease, caused by tomato leaf curl New Delhi virus-[potato] (ToLCNDV-[potato]) is one of the most important viral diseases of potato in India. Genetic resistance source for ToLCNDV in potato is not identified so far. However, the cultivar Kufri Bahar is known to show lowest seed degeneration even under high vector levels. Hence, microarray analysis was performed to identify differentially regulated genes during ToLCNDV-[potato] infection in a resistant (Kufri Bahar) and a susceptible cultivar (Kufri Pukhraj)...
January 20, 2017: Virus Research
https://www.readbyqxmd.com/read/28108870/elucidating-the-interactions-and-phytotoxicity-of-zinc-oxide-nanoparticles-with-agriculturally-beneficial-bacteria-and-selected-crop-plants
#16
Anuraag Boddupalli, Rameshwar Tiwari, Anamika Sharma, Surender Singh, Radha Prasanna, Lata Nain
There is a growing interest in the use of bioinoculants to assist mineral fertilizers in improving crop production and yield. Azotobacter and Pseudomonas are two agriculturally relevant strains of bacteria which have been established as efficient bioinoculants. An experiment involving addition of graded concentrations of zinc oxide (ZnO) nanoparticles was undertaken using log phase cultures of Azotobacter and Pseudomonas. Growth kinetics revealed a clear trend of gradual decrease with Pseudomonas; however, Azotobacter exhibited a twofold enhancement in growth with increase in the concentration of ZnO concentration...
January 20, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28107448/potential-of-endophytic-fungi-isolated-from-cotton-roots-for-biological-control-against-verticillium-wilt-disease
#17
Yuan Yuan, Hongjie Feng, Lingfei Wang, Zhifang Li, Yongqiang Shi, LiHong Zhao, Zili Feng, Heqin Zhu
Verticillium wilt is a soil-borne disease, and severely limits the development of cotton production. To investigate the role of endophytic fungi on Verticillium wilt, CEF-818 (Penicillium simplicissimum), CEF-714 (Leptosphaeria sp.), CEF-642 (Talaromyces flavus.) and CEF-193 (Acremonium sp.) isolated from cotton roots were used to assess their effects against cotton wilt disease caused by a defoliating V. dahliae strain Vd080. In the greenhouse, all treatments significantly reduced disease incidence and disease index, with the control efficacy ranging from 26% (CEF-642) to 67% (CEF-818) at 25 days (d) after inoculation...
2017: PloS One
https://www.readbyqxmd.com/read/28099574/anatomy-and-micromorphometric-analysis-of-leaf-catasetum-x-apolloi-benelli-grill-with-addition-of-potassium-silicate-under-different-light-sources
#18
L Eburneo, N G Ribeiro-Júnior, I V Karsburg, A A B Rossi, I V Silva
The aim of this study was to compare vitroplants Catasetum x apolloi grown under natural light and artificial light and different concentrations of potassium silicate, providing data on the anatomical differentiation that aids the acclimatization process of this species. Plants from in vitro seeding were used; 5 protocorms of approximately 0.5 cm were inoculated into vials with a capacity of 500 mL containing 100 mL of alternative culture medium plus potassium silicate (0.0, 0.5; 1.0 mL L-1), pH adjusted to 5...
January 12, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28099471/molybdate-in-rhizobial-seed-coat-formulations-improves-the-production-and-nodulation-of-alfalfa
#19
Jiqiong Zhou, Bo Deng, Yingjun Zhang, Adam B Cobb, Zhao Zhang
Rhizobia-legume symbiosis is the most well researched biological nitrogen fixation system. Coating legume seeds with rhizobia is now a recognized practical measure for improving the production of legume corp. However, the efficacy of some commercial rhizobia inoculants cannot be guaranteed in China due to the low rate of live rhizobia in these products. A greenhouse experiment was conducted to assess the effects of different rhizobial inoculant formulations on alfalfa productivity and nitrogen fixation. Two rhizobia strains, (ACCC17631 and ACCC17676), that are effective partners with alfalfa variety Zhongmu No...
2017: PloS One
https://www.readbyqxmd.com/read/28069305/use-of-plant-growth-promoting-bacterial-strains-to-improve-cytisus-striatus-and-lupinus-luteus-development-for-potential-application-in-phytoremediation
#20
María Balseiro-Romero, Panagiotis Gkorezis, Petra S Kidd, Jonathan Van Hamme, Nele Weyens, Carmen Monterroso, Jaco Vangronsveld
Plant growth promoting (PGP) bacterial strains possess different mechanisms to improve plant development under common environmental stresses, and are therefore often used as inoculants in soil phytoremediation processes. The aims of the present work were to study the effects of a collection of plant growth promoting bacterial strains on plant development, antioxidant enzyme activities and nutritional status of Cytisus striatus and/or Lupinus luteus plants a) growing in perlite under non-stress conditions and b) growing in diesel-contaminated soil...
January 6, 2017: Science of the Total Environment
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