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https://www.readbyqxmd.com/read/27922098/comparison-of-432-pseudomonas-strains-through-integration-of-genomic-functional-metabolic-and-expression-data
#1
Jasper J Koehorst, Jesse C J van Dam, Ruben G A van Heck, Edoardo Saccenti, Vitor A P Martins Dos Santos, Maria Suarez-Diez, Peter J Schaap
Pseudomonas is a highly versatile genus containing species that can be harmful to humans and plants while others are widely used for bioengineering and bioremediation. We analysed 432 sequenced Pseudomonas strains by integrating results from a large scale functional comparison using protein domains with data from six metabolic models, nearly a thousand transcriptome measurements and four large scale transposon mutagenesis experiments. Through heterogeneous data integration we linked gene essentiality, persistence and expression variability...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922095/co-expression-network-analyses-identify-functional-modules-associated-with-development-and-stress-response-in-gossypium-arboreum
#2
Qi You, Liwei Zhang, Xin Yi, Kang Zhang, Dongxia Yao, Xueyan Zhang, Qianhua Wang, Xinhua Zhao, Yi Ling, Wenying Xu, Fuguang Li, Zhen Su
Cotton is an economically important crop, essential for the agriculture and textile industries. Through integrating transcriptomic data, we discovered that multi-dimensional co-expression network analysis was powerful for predicting cotton gene functions and functional modules. Here, the recently available transcriptomic data on Gossypium arboreum, including data on multiple growth stages of tissues and stress treatment samples were applied to construct a co-expression network exploring multi-dimensional expression (development and stress) through multi-layered approaches...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922076/identification-of-bnayucca6-as-a-candidate-gene-for-branch-angle-in-brassica-napus-by-qtl-seq
#3
Hui Wang, Hongtao Cheng, Wenxiang Wang, Jia Liu, Mengyu Hao, Desheng Mei, Rijin Zhou, Li Fu, Qiong Hu
Oilseed rape (Brassica napus L.) is one of the most important oil crops in China as well as worldwide. Branch angle as a plant architecture component trait plays an important role for high density planting and yield performance. In this study, bulked segregant analysis (BSA) combined with next generation sequencing technology was used to fine map QTL for branch angle. A major QTL, designated as branch angle 1 (ba1) was identified on A06 and further validated by Indel marker-based classical QTL mapping in an F2 population...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922073/a-single-step-method-for-rna-isolation-from-tropical-crops-in-the-field
#4
J-C Breitler, C Campa, F Georget, B Bertrand, H Etienne
The RNAzol RT reagent was used to provide pure RNA from human cells. We develop a protocol using RNAzol RT reagent to extract pure RNA from plants tissues and demonstrate that this RNA extraction method works not only at room temperature but also at elevated temperatures and provides the simplest and most effective single-step method to extract pure and undegraded RNA directly from tropical plants in the field. RNA extraction directly in a complex field environment opens up the way for studying gene-environment interactions at transcriptome level to decipher the complex regulatory network involved in multiple-stress responses...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922066/de-novo-transcriptome-characterization-of-dracaena-cambodiana-and-analysis-of-genes-involved-in-flavonoid-accumulation-during-formation-of-dragon-s-blood
#5
Jia-Hong Zhu, Tian-Jun Cao, Hao-Fu Dai, Hui-Liang Li, Dong Guo, Wen-Li Mei, Shi-Qing Peng
Dragon's blood is a red resin mainly extracted from Dracaena plants, and has been widely used as a traditional medicine in East and Southeast Asia. The major components of dragon's blood are flavonoids. Owing to a lack of Dracaena plants genomic information, the flavonoids biosynthesis and regulation in Dracaena plants remain unknown. In this study, three cDNA libraries were constructed from the stems of D. cambodiana after injecting the inducer. Approximately 266.57 million raw sequencing reads were de novo assembled into 198,204 unigenes, of which 34,873 unique sequences were annotated in public protein databases...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921397/nitric-oxide-induced-by-polyamines-involves-antioxidant-systems-against-chilling-stress-in-tomato-lycopersicon-esculentum-mill-seedling
#6
Qian-Nan Diao, Yong-Jun Song, Dong-Mei Shi, Hong-Yan Qi
Polyamines (PAs) and nitric oxide (NO) are vital signals in modulating plant response to abiotic stress. However, to our knowledge, studies on the relationship between NO and PAs in response to cold stress in tomato are limited. Accordingly, in this study, we investigated the effects of putrescine (Put) and spermidine (Spd) on NO generation and the function of Spd-induced NO in the tolerance of tomato seedling under chilling stress. Spd increased NO release via the nitric oxide synthase (NOS)-like and nitrate reductase (NR) enzymatic pathways in the seedlings, whereas Put had no such effect...
2016: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/27921396/frequency-and-type-of-inheritable-mutations-induced-by-%C3%AE-rays-in-rice-as-revealed-by-whole-genome-sequencing
#7
Shan Li, Yun-Chao Zheng, Hai-Rui Cui, Hao-Wei Fu, Qing-Yao Shu, Jian-Zhong Huang
Mutation breeding is based on the induction of genetic variations; hence knowledge of the frequency and type of induced mutations is of paramount importance for the design and implementation of a mutation breeding program. Although γ ray irradiation has been widely used since the 1960s in the breeding of about 200 economically important plant species, molecular elucidation of its genetic effects has so far been achieved largely by analysis of target genes or genomic regions. In the present study, the whole genomes of six γ-irradiated M2 rice plants were sequenced; a total of 144-188 million high-quality (Q>20) reads were generated for each M2 plant, resulting in genome coverage of >45 times for each plant...
2016: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/27920791/extending-a-single-residue-switch-for-abbreviating-catalysis-in-plant-ent-kaurene-synthases
#8
Meirong Jia, Reuben J Peters
Production of ent-kaurene as a precursor for important signaling molecules such as the gibberellins seems to have arisen early in plant evolution, with corresponding cyclase(s) present in all land plants (i.e., embryophyta). The relevant enzymes seem to represent fusion of the class II diterpene cyclase that produces the intermediate ent-copalyl diphosphate (ent-CPP) and the subsequently acting class I diterpene synthase that produces ent-kaurene, although the bifunctionality of the ancestral gene is only retained in certain early diverging plants, with gene duplication and sub-functionalization leading to distinct ent-CPP synthases and ent-kaurene synthases (KSs) generally observed...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27920789/transcriptomic-effects-of-the-cell-cycle-regulator-lgo-in-arabidopsis-sepals
#9
Erich M Schwarz, Adrienne H K Roeder
Endoreduplication is a specialized cell cycle in which DNA replication occurs, but mitosis is skipped creating enlarged polyploid cells. Endoreduplication is associated with the differentiation of many specialized cell types. In the Arabidopsis thaliana sepal epidermis endoreduplicated giant cells form interspersed between smaller cells. Both the transcription factor Arabidopsis thaliana MERISTEM LAYER1 (ATML1) and the plant-specific cyclin dependent kinase inhibitor LOSS OF GIANT CELLS FROM ORGANS (LGO)/SIAMESE RELATED1 (SMR1) are required for the formation of giant cells...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27920787/interactive-effects-of-elevated-co2-and-water-stress-on-physiological-traits-and-gene-expression-during-vegetative-growth-in-four-durum-wheat-genotypes
#10
Susan Medina, Rubén Vicente, Amaya Amador, José Luis Araus
The interaction of elevated [CO2] and water stress will have an effect on the adaptation of durum wheat to future climate scenarios. For the Mediterranean basin these scenarios include the rising occurrence of water stress during the first part of the crop cycle. In this study, we evaluated the interactive effects of elevated [CO2] and moderate to severe water stress during the first part of the growth cycle on physiological traits and gene expression in four modern durum wheat genotypes. Physiological data showed that elevated [CO2] promoted plant growth but reduced N content...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27920785/a-jasmonate-inducible-defense-trait-transferred-from-wild-into-cultivated-tomato-establishes-increased-whitefly-resistance-and-reduced-viral-disease-incidence
#11
Rocío Escobar-Bravo, Juan M Alba, Clara Pons, Antonio Granell, Merijn R Kant, Enrique Moriones, Rafael Fernández-Muñoz
Whiteflies damage tomatoes mostly via the viruses they transmit. Cultivated tomatoes lack many of the resistances of their wild relatives. In order to increase protection to its major pest, the whitefly Bemisia tabaci and its transmitted Tomato Yellow Leaf Curl Virus (TYLCV), we introgressed a trichome-based resistance trait from the wild tomato Solanum pimpinellifolium into cultivated tomato, Solanum lycopersicum. The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes, and exhibits increased, yet limited protection to whiteflies at early development stages...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27920767/ecophysiology-and-comparative-genomics-of-nitrosomonas-mobilis-ms1-isolated-from-autotrophic-nitrifying-granules-of-wastewater-treatment-bioreactor
#12
Soe Myat Thandar, Norisuke Ushiki, Hirotsugu Fujitani, Yuji Sekiguchi, Satoshi Tsuneda
Ammonia-oxidizing bacteria (AOB), which oxidize ammonia to nitrite in the first step of nitrification, play an important role in biological wastewater treatment systems. Nitrosomonas mobilis is an important and dominant AOB in various wastewater treatment systems. However, the detailed physiological and genomic properties of N. mobilis have not been thoroughly investigated because of limited success isolating pure cultures. This study investigated the key physiological characteristics of N. mobilis Ms1, which was previously isolated into pure culture from the nitrifying granules of wastewater treatment bioreactor...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27920338/the-plethora-gene-regulatory-network-guides-growth-and-cell-differentiation-in-arabidopsis-roots
#13
Luca Santuari, Gabino Sanchez-Perez, Marijn Luijten, Bas Rutjens, Inez Terpstra, Lidija Berke, Maartje Gorte, Kalika Prasad, Dongping Bao, Johanna L P M Timmermans-Hereijgers, Kenichiro Maeo, Kenzo Nakamura, Akie Shimotohno, Ales Pencik, Ondřej Novák, Karin Ljung, Sebastiaan van Heesch, Ewart de Bruijn, Edwin Cuppen, Viola Willemsen, Ari Pekka Mähönen, Wolfgang Lukowitz, Berend Snel, Dick de Ridder, Ben Scheres, Renze Heidstra
Organ formation in animals and plants relies on precise control of cell state transitions to turn stem cell daughters into fully differentiated cells. In plants, cells cannot rearrange due to shared cell walls. Thus, differentiation progression and the accompanying cell expansion must be tightly coordinated across tissues. PLETHORA (PLT) transcription factor gradients are unique in their ability to guide the progression of cell differentiation at different positions in the growing Arabidopsis root, which contrasts with well-described transcription factor gradients in animals specifying distinct cell fates within an essentially static context...
December 5, 2016: Plant Cell
https://www.readbyqxmd.com/read/27920227/geographic-variation-of-plant-circadian-clock-function-in-natural-and-agricultural-settings
#14
Kathleen Greenham, Ping Lou, Joshua R Puzey, Ganesh Kumar, Cindy Arnevik, Hany Farid, John H Willis, C Robertson McClung
The increasing demand for improved agricultural production will require more efficient breeding for traits that maintain yield under heterogeneous environments. The internal circadian oscillator is essential for perceiving and coordinating environmental cues such as day length, temperature, and abiotic stress responses within physiological processes. To investigate the contribution of the circadian clock to local adaptability, we have analyzed circadian period by leaf movement in natural populations of Mimulus guttatus and domesticated cultivars of Glycine max We detected consistent variation in circadian period along a latitudinal gradient in annual populations of the wild plant and the selectively bred crop, and this provides novel evidence of natural and artificial selection for circadian performance...
December 5, 2016: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/27920157/two-serk-receptor-like-kinases-interact-with-the-receptor-like-kinase-ems1-in-anther-cell-fate-determination
#15
Zhiyong Li, Yao Wang, Jian Huang, Nagib Ahsan, Gabriel Biener, Joel Paprocki, Jay J Thelen, Valerica Raicu, Dazhong Zhao
Cell signaling pathways mediated by leucine-rich repeat receptor-like kinases (LRR-RLK) are essential for plant growth, development and defense. The EMS1 (EXCESS MICROSPOROCYTES1) LRR-RLK and its small protein ligand TPD1 (TAPETUM DETERMINANT1) play a fundamental role in somatic and reproductive cell differentiation during early anther development in Arabidopsis (Arabidopsis thaliana). However, it is unclear whether other cell surface molecules serve as co-regulators of EMS1. Here, we show that SERK1 (SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE1) and SERK2 LRR-RLKs act redundantly as co-regulatory and physical partners of EMS1...
December 5, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27919652/sequencing-of-individual-chromosomes-of-plant-pathogenic-fusarium-oxysporum
#16
Takeshi Kashiwa, Toshinori Kozaki, Kazuo Ishii, B Gillian Turgeon, Tohru Teraoka, Ken Komatsu, Tsutomu Arie
A small chromosome in reference isolate 4287 of F. oxysporum f. sp. lycopersici (Fol) has been designated as a 'pathogenicity chromosome' because it carries several pathogenicity related genes such as the Secreted In Xylem (SIX) genes. Sequence assembly of small chromosomes in other isolates, based on a reference genome template, is difficult because of karyotype variation among isolates and a high number of sequences associated with transposable elements. These factors often result in misassembly of sequences, making it unclear whether other isolates possess the same pathogenicity chromosome harboring SIX genes as in the reference isolate...
December 2, 2016: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/27919081/m-6-a-potentiates-sxl-alternative-pre-mrna-splicing-for-robust-drosophila-sex-determination
#17
Irmgard U Haussmann, Zsuzsanna Bodi, Eugenio Sanchez-Moran, Nigel P Mongan, Nathan Archer, Rupert G Fray, Matthias Soller
N(6)-methyladenosine (m(6)A) is the most common internal modification of eukaryotic messenger RNA (mRNA) and is decoded by YTH domain proteins. The mammalian mRNA m(6)A methylosome is a complex of nuclear proteins that includes METTL3 (methyltransferase-like 3), METTL14, WTAP (Wilms tumour 1-associated protein) and KIAA1429. Drosophila has corresponding homologues named Ime4 and KAR4 (Inducer of meiosis 4 and Karyogamy protein 4), and Female-lethal (2)d (Fl(2)d) and Virilizer (Vir). In Drosophila, fl(2)d and vir are required for sex-dependent regulation of alternative splicing of the sex determination factor Sex lethal (Sxl)...
November 30, 2016: Nature
https://www.readbyqxmd.com/read/27918942/molecular-networks-orchestrating-plant-cell-growth
#18
REVIEW
Anna Franciosini, Bart Rymen, Michitaro Shibata, David S Favero, Keiko Sugimoto
Plant cell growth can broadly be categorized into either diffuse or tip growth. Here we compare gene regulatory networks (GRNs) controlling growth of hypocotyls and root hairs as examples for diffuse and tip growth, respectively. Accumulating evidence shows that GRNs in both cell types are multi-layered in structure and fine-tuned by transcriptional and post-translational mechanisms. We discuss how these GRNs regulate the expression of proteins controlling cell wall remodeling or other growth regulatory processes...
December 2, 2016: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/27918939/the-shady-side-of-leaf-development-the-role-of-the-revoluta-kanadi1-module-in-leaf-patterning-and-auxin-mediated-growth-promotion
#19
REVIEW
Paz Merelo, Esther Botterweg Paredes, Marcus G Heisler, Stephan Wenkel
Leaves are present in all land plants and are specialized organs for light harvesting. They arise at the flanks of the shoot apical meristem (SAM), and develop into lamina structures that exhibit adaxial/abaxial (upper/lower side of the leaf) polarity. At the molecular level, an intricate regulatory network determines ad-/abaxial polarity in Arabidopsis thaliana leaves, where the Class III Homeodomain Leucine Zipper (HD-ZIPIII) and KANADI (KAN) proteins are key mediators. The HD-ZIPIII REVOLUTA (REV) is expressed in the adaxial domain of lateral organs, whereas KAN1 is involved in abaxial differentiation...
December 2, 2016: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/27918628/phenotypic-and-genome-wide-association-analysis-of-spike-ethylene-in-diverse-wheat-genotypes-under-heat-stress
#20
Ravi Valluru, Matthew P Reynolds, William J Davies, Sivakumar Sukumaran
The gaseous phytohormone ethylene plays an important role in spike development in wheat (Triticum aestivum). However, the genotypic variation and the genomic regions governing spike ethylene (SET) production in wheat under long-term heat stress remain unexplored. We investigated genotypic variation in the production of SET and its relationship with spike dry weight (SDW) in 130 diverse wheat elite lines and landraces under heat-stressed field conditions. We employed an Illumina iSelect 90K single nucleotide polymorphism (SNP) genotyping array to identify the genetic loci for SET and SDW through a genome-wide association study (GWAS) in a subset of the Wheat Association Mapping Initiative (WAMI) panel...
December 5, 2016: New Phytologist
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