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https://www.readbyqxmd.com/read/28102497/regulated-partitioning-of-fixed-carbon-14-c-sodium-na-potassium-k-and-glycine-betaine-determined-salinity-stress-tolerance-of-gamma-irradiated-pigeonpea-cajanus-cajan-l-millsp
#1
Pankaj Kumar, Vasundhara Sharma, Chobhe Kapil Atmaram, Bhupinder Singh
Soil salinity is a major constraint that limits legume productivity. Pigeonpea is a salt sensitive crop. Seed gamma irradiation at a very low dose (2.5 Gy) is known to enhance seedling establishment, plant growth and yield of cereals and other crops. The present study conducted using two genetically diverse varieties of pigeonpea viz., Pusa-991 and Pusa-992 aimed at establishing the role of pre-sowing seed gamma irradiation at 0, 0.0025, 0.005, 0.01, 0.02, 0.05 and 0.1 kGy on plant growth, seed yield and seed quality under salt stress at 0, 80 and 100 mM NaCl (soil solution EC equivalent 1...
January 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28102202/consistent-negative-response-of-us-crops-to-high-temperatures-in-observations-and-crop-models
#2
Bernhard Schauberger, Sotirios Archontoulis, Almut Arneth, Juraj Balkovic, Philippe Ciais, Delphine Deryng, Joshua Elliott, Christian Folberth, Nikolay Khabarov, Christoph Müller, Thomas A M Pugh, Susanne Rolinski, Sibyll Schaphoff, Erwin Schmid, Xuhui Wang, Wolfram Schlenker, Katja Frieler
High temperatures are detrimental to crop yields and could lead to global warming-driven reductions in agricultural productivity. To assess future threats, the majority of studies used process-based crop models, but their ability to represent effects of high temperature has been questioned. Here we show that an ensemble of nine crop models reproduces the observed average temperature responses of US maize, soybean and wheat yields. Each day >30 °C diminishes maize and soybean yields by up to 6% under rainfed conditions...
January 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28101667/impact-of-an-arbuscular-mycorrhizal-fungus-versus-a-mixed-microbial-inoculum-on-the-transcriptome-reprogramming-of-grapevine-roots
#3
Raffaella Balestrini, Alessandra Salvioli, Alessandra Dal Molin, Mara Novero, Giovanni Gabelli, Eleonora Paparelli, Fabio Marroni, Paola Bonfante
Grapevine, cultivated for both fruit and beverage production, represents one of the most economically important fruit crops worldwide. With the aim of better understanding how grape roots respond to beneficial microbes, a transcriptome sequencing experiment has been performed to evaluate the impact of a single arbuscular mycorrhizal (AM) fungal species (Funneliformis mosseae) versus a mixed inoculum containing a bacterial and fungal consortium, including different AM species, on Richter 110 rootstock. Results showed that the impact of a single AM fungus and of a complex microbial inoculum on the grapevine transcriptome differed...
December 27, 2016: Mycorrhiza
https://www.readbyqxmd.com/read/28100080/the-commercialization-of-genome-editing-technologies
#4
Katelyn Brinegar, Ali K Yetisen, Sun Choi, Emily Vallillo, Guillermo U Ruiz-Esparza, Anand M Prabhakar, Ali Khademhosseini, Seok-Hyun Yun
The emergence of new gene-editing technologies is profoundly transforming human therapeutics, agriculture, and industrial biotechnology. Advances in clustered regularly interspaced short palindromic repeats (CRISPR) have created a fertile environment for mass-scale manufacturing of cost-effective products ranging from basic research to translational medicine. In our analyses, we evaluated the patent landscape of gene-editing technologies and found that in comparison to earlier gene-editing techniques, CRISPR has gained significant traction and this has established dominance...
January 18, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28098349/ectopic-expression-of-two-areb-abf-orthologs-increase-dehydration-tolerance-in-cotton-gossypium-hirsutum
#5
Tyson C C Kerr, Haggag Abdel-Mageed, Lorenzo Aleman, Joohyun Lee, Paxton Payton, Dakota Cryer, Randy D Allen
Plants have evolved complex molecular, cellular, and physiological mechanisms to respond to environmental stressors. Due to the inherent complexity of this response, genetic manipulation to substantially improve water deficit tolerance, particularly in agricultural crops, has been largely unsuccessful, as the improvements are frequently accompanied by slower growth and delayed reproduction. Here, we ectopically express two abiotic stress responsive bZIP AREB/ABF transcription factor orthologs, Arabidopsis ABF3 and a Gossypium hirsutum ABF2D, in G...
January 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28098198/climate-change-influences-on-crop-mix-shifts-in-the-united-states
#6
Sung Ju Cho, Bruce A McCarl
We examine the impact of current and future climate on crop mixes over space in the US. We find using historical data that temperature and precipitation are among the causal factors for shits in crop production location and mixes, with some crops being more sensitive than others. In particular, we find that when temperature rises, cotton, rice, sorghum and winter wheat are more likely to be chosen. We also find that barley, sorghum, winter wheat, spring wheat and hay are more likely to be chosen as regions become drier, and corn, cotton, rice and soybeans are more likely to be selected in wetter regions...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097164/molecular-characterization-and-construction-of-an-infectious-clone-of-a-pepper-isolate-of-beet-curly-top-iran-virus
#7
Omid Eini, Ghazal Ebadzad Sahraei, Seyed Ali Akbar Behjatnia
Geminiviruses cause curly top disease, in dicotyledonous plants which constrains host crop production. Beet curly top Iran virus (BCTIV) is a widespread Becurtovirus (family Geminiviridae) in numerous areas within Iran. In this study, we isolated and analyzed a full-length genomic DNA of a new variant of BCTIV from pepper crops in the Kaftark region, east of Shiraz (proposed acronym: BCTIV-Kaf [IR: Kaf:2016:Pepper]). Infected pepper plants showed shortening of internodes, severe interveinal chlorosis, upward leaf rolling and leaf curling...
June 2016: Molecular Biology Research Communications
https://www.readbyqxmd.com/read/28096409/field-scale-experiments-reveal-persistent-yield-gaps-in-low-input-and-organic-cropping-systems
#8
Alexandra N Kravchenko, Sieglinde S Snapp, G Philip Robertson
Knowledge of production-system performance is largely based on observations at the experimental plot scale. Although yield gaps between plot-scale and field-scale research are widely acknowledged, their extent and persistence have not been experimentally examined in a systematic manner. At a site in southwest Michigan, we conducted a 6-y experiment to test the accuracy with which plot-scale crop-yield results can inform field-scale conclusions. We compared conventional versus alternative, that is, reduced-input and biologically based-organic, management practices for a corn-soybean-wheat rotation in a randomized complete block-design experiment, using 27 commercial-size agricultural fields...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28095490/costs-and-tradeoffs-of-resistance-and-tolerance-to-belowground-herbivory-in-potato
#9
Etzel Garrido, Maria Fernanda Díaz, Hugo Bernal, Carlos Eduardo Ñustez, Jennifer Thaler, Georg Jander, Katja Poveda
The success of sustainable crop production depends on our ability to select or create varieties that can allocate resources to both growth and defence. However, breeding efforts have emphasized increases in yields but have partially neglected defence traits against pests. Estimating the costs of multiple defences against tuber herbivores and the tradeoffs among them, as well as understanding the relationship between yield and multiple defences is still unknown but relevant to both basic and applied ecology...
2017: PloS One
https://www.readbyqxmd.com/read/28094904/hormetic-effects-of-glyphosate-on-plants
#10
REVIEW
Ivana Pfs Brito, Leandro Tropaldi, Caio A Carbonari, Edivaldo D Velini
As all herbicides act on pathways or processes crucial to plants, in an inhibitory or stimulatory way, low rates of any herbicide might be used to modulate plant growth, development, or plant composition. Glyphosate is the most used pesticide in the world, and very low rates of this herbicide can stimulate plant growth, an effect called hormesis. Several studies have shown that glyphosate applications at low rates can increase plant growth, induce shikimic acid accumulation, increase photosynthesis and stomatal opening, increase seed production, and shorten the plant life cycle...
January 17, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28094805/the-genome-sequence-of-barbarea-vulgaris-facilitates-the-study-of-ecological-biochemistry
#11
Stephen L Byrne, Pernille Østerbye Erthmann, Niels Agerbirk, Søren Bak, Thure Pavlo Hauser, Istvan Nagy, Cristiana Paina, Torben Asp
The genus Barbarea has emerged as a model for evolution and ecology of plant defense compounds, due to its unusual glucosinolate profile and production of saponins, unique to the Brassicaceae. One species, B. vulgaris, includes two 'types', G-type and P-type that differ in trichome density, and their glucosinolate and saponin profiles. A key difference is the stereochemistry of hydroxylation of their common phenethylglucosinolate backbone, leading to epimeric glucobarbarins. Here we report a draft genome sequence of the G-type, and re-sequencing of the P-type for comparison...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28094308/silicon-availability-modifies-nutrient-use-efficiency-and-content-c-n-p-stoichiometry-and-productivity-of-winter-wheat-triticum-aestivum-l
#12
Silke Neu, Jörg Schaller, E Gert Dudel
Silicon (Si) is known as beneficial element for graminaceous plants. The importance of Si for plant functioning of cereals was recently emphasized. However, about the effect of Si availability on biomass production, grain yield, nutrient status and nutrient use efficiency for wheat (Triticum aestivum L.), as one of the most important crop plants worldwide, less is known so far. Consequently, we assessed the effect of a broad range of supply levels of amorphous SiO2 on wheat plant performance. Our results revealed that Si is readily taken up and accumulated basically in aboveground vegetative organs...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28093767/progress-in-modification-of-sunflower-oil-to-expand-its-industrial-value
#13
REVIEW
Saeed Rauf, Nazia Jamil, Sultan Ali Tariq, Maria Khan, Maria Kausar, YalcinKaya
Increasing the sunflower seed oil content as well as improving its quality makes it compatible for industrial demands. This is an important breeding objective of sunflower which increases its market value and ensures high returns for the producers. The present review focuses on determining the progress of improving sunflower seed oil content and modifying its quality by empirical and advanced molecular breeding methods. It is known that the oil content and quality of sunflower oil have been altered through empirical selection methods and mutation breeding programs in various parts of the world...
January 17, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28092002/adaptation-of-primocane-fruiting-raspberry-plants-to-environmental-factors-under-the-influence-of-bacillus-strains-in-western-siberia
#14
Anatoly A Belyaev, Margarita V Shternshis, Nina S Chechenina, Tatyana V Shpatova, Anastasya A Lelyak
In geographical locations with a short vegetative season and continental climate that include Western Siberia, growing primocane fruiting raspberry varieties becomes very important. However, it is necessary to help the plants to overcome the environmental stress factors. This study aimed to evaluate the impact of the pre-planting treatment of primocane fruiting raspberry root system with Bacillus strains on the following plant development under variable environmental conditions. In 2012, Bacillus subtilis RCAM В-10641, Bacillus amyloliquefaciens RCAM В-10642, and Bacillus licheniformis RCAM В-10562 were used for inoculating the root system of primocane fruiting raspberry cultivar Nedosyagaemaya before planting...
January 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28089747/metabolic-engineering-of-a-diazotrophic-bacterium-improves-ammonium-release-and-biofertilization-of-plants-and-microalgae
#15
Rafael Ambrosio, Juan Cesar Federico Ortiz-Marquez, Leonardo Curatti
The biological nitrogen fixation carried out by some Bacteria and Archaea is one of the most attractive alternatives to synthetic nitrogen fertilizers. However, with the exception of the symbiotic rhizobia-legumes system, progress towards a more extensive realization of this goal has been slow. In this study we manipulated the endogenous regulation of both nitrogen fixation and assimilation in the aerobic bacterium Azotobacter vinelandii. Substituting an exogenously inducible promoter for the native promoter of glutamine synthetase produced conditional lethal mutant strains unable to grow diazotrophically in the absence of the inducer...
January 9, 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/28089535/farmer-attitudes-and-perceptions-to-the-re-use-of-fertiliser-products-from-resource-oriented-sanitation-systems-the-case-of-vellore-south-india
#16
Prithvi Simha, Cecilia Lalander, Björn Vinnerås, M Ganesapillai
Relatively little research has been conducted to date on farmer attitudes towards the use of fertilisers from resource-oriented sanitation systems. This study employed a psycho-sociological approach to identify factors that encourage, or discourage, negative and positive attitudes to human waste recycling among farmers in southern India. A survey involving face-to-face interviews was performed with 120 randomly sampled farmers, taking into account the following factors: gender, age, religion, caste, type of farming, farm size, annual income and farming history...
January 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28088010/challenges-and-opportunities-for-improving-food-quality-and-nutrition-through-plant-biotechnology
#17
REVIEW
David Francis, John J Finer, Erich Grotewold
Plant biotechnology has been around since the advent of humankind, resulting in tremendous improvements in plant cultivation through crop domestication, breeding and selection. The emergence of transgenic approaches involving the introduction of defined DNA sequences into plants by humans has rapidly changed the surface of our planet by further expanding the gene pool used by plant breeders for plant improvement. Transgenic approaches in food plants have raised concerns on the merits, social implications, ecological risks and true benefits of plant biotechnology...
January 11, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28087942/the-mutualistic-interaction-between-plants-and-arbuscular-mycorrhizal-fungi
#18
Luisa Lanfranco, Paola Bonfante, Andrea Genre
Mycorrhizal fungi belong to several taxa and develop mutualistic symbiotic associations with over 90% of all plant species, from liverworts to angiosperms. While descriptive approaches have dominated the initial studies of these fascinating symbioses, the advent of molecular biology, live cell imaging, and "omics" techniques have provided new and powerful tools to decipher the cellular and molecular mechanisms that rule mutualistic plant-fungus interactions. In this article we focus on the most common mycorrhizal association, arbuscular mycorrhiza (AM), which is formed by a group of soil fungi belonging to Glomeromycota...
December 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28087936/fungal-ligninolytic-enzymes-and-their-applications
#19
Miia R Mäkelä, Erin L Bredeweg, Jon K Magnuson, Scott E Baker, Ronald P de Vries, Kristiina Hildén
The global push toward an efficient and economical biobased economy has driven research to develop more cost-effective applications for the entirety of plant biomass, including lignocellulosic crops. As discussed elsewhere (Karlsson M, Atanasova L, Funck Jensen D, Zeilinger S, in Heitman J et al. [ed], Tuberculosis and the Tubercle Bacillus, 2nd ed, in press), significant progress has been made in the use of polysaccharide fractions from lignocellulose, cellulose, and various hemicellulose types. However, developing processes for use of the lignin fraction has been more challenging...
December 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28087536/the-regulator-of-type-iv-pili-synthesis-pilr-from-lysobacter-controls-antifungal-antibiotic-production-via-a-c-di-gmp-pathway
#20
Yuan Chen, Jing Xia, Zhenhe Su, Gaoge Xu, Mark Gomelsky, Guoliang Qian, Fengquan Liu
Lysobacter enzymogenes is a ubiquitous soil gammaproteobacterium that produces a broad-spectrum antifungal antibiotic, known as Heat-Stable Antifungal Factor (HSAF). To increase HSAF production for the use against fungal crop diseases, it is important to understand how HSAF synthesis is regulated. To gain insights into transcriptional regulation of the HSAF synthesis gene cluster, we generated a library of deletion mutants in the genes predicted to encode response regulators of the two-component signaling systems in L...
January 13, 2017: Applied and Environmental Microbiology
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