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Frontiers in Plant Science

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https://www.readbyqxmd.com/read/30631334/selection-of-transcripts-affecting-initial-growth-rate-of-rice-backcrossed-inbred-lines-using-rna-sequencing-data
#1
Akari Fukuda, Tatsuro Hirose, Naohiro Aoki, Satoshi Kondo, Madoka Yonekura, Tomomori Kataoka, Chikara Ohto, Atsushi J Nagano
Seedling growth is an important factor for direct seeding of rice. However, the genetic and transcriptomic factors involved in this process are largely unknown. In this study, transcripts affecting shoot weight were identified in rice ( Oryza sativa L.) using RNA sequencing (RNA-Seq) data from 20 backcrossed inbred lines (BILs) and their parental cultivars. The selection frequency of the genes for the regression model was determined using repeated analysis of random subsets of the transcriptome. The qLTG3-1 gene, controlling low-temperature germinability, and short grain 1 gene ( SG1 ), known to decrease organ elongation, showed high frequency...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30631333/non-tal-effectors-from-xanthomonas-oryzae-pv-oryzae-suppress-peptidoglycan-triggered-mapk-activation-in-rice
#2
Juying Long, Congfeng Song, Fang Yan, Junhui Zhou, Huanbin Zhou, Bing Yang
Xanthomonas oryzae pv. oryzae , the causal pathogen of bacterial blight of rice, depends on its type III secretion system and associated effector proteins to grow and colonize the vascular tissues of rice plants. The type III effectors include a family of closely related transcription activator-like (TAL) effectors and the rest of diverse effectors, so-called non-TAL effectors. Our understanding of non-TAL effectors for pathogenesis in rice blight is still limited. Here we report a feasible method to rapidly detect the activation of mitogen-activated protein kinase pathway in rice mesophyll protoplasts by the X ...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30631332/understory-community-assembly-following-wildfire-in-boreal-forests-shift-from-stochasticity-to-competitive-exclusion-and-environmental-filtering
#3
Bo Liu, Han Y H Chen, Jian Yang
Understory vegetation accounts for the majority of plant species diversity and serves as a driver of overstory succession and nutrient cycling in boreal forest ecosystems. However, investigations of the underlying assembly processes of understory vegetation associated with stand development following a wildfire disturbance are rare, particularly in Eurasian boreal forests. In this study, we measured the phylogenetic and functional diversity and trait dispersions of understory communities and tested how these patterns changed with stand age in the Great Xing'an Mountains of Northeastern China...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30631331/structure-guided-mechanisms-behind-the-metabolism-of-2-4-6-trinitrotoluene-by-glutathione-transferases-u25-and-u24-that-lead-to-alternate-product-distribution
#4
Kyriakos Tzafestas, Laziana Ahmad, M Paulina Dani, Gideon Grogan, Elizabeth L Rylott, Neil C Bruce
The explosive xenobiotic 2,4,6-trinitrotoluene (TNT) is a major worldwide environmental pollutant and its persistence in the environment presents health and environmental concerns. The chemical structure of TNT dictates that biological detoxification pathways follow predominantly reductive transformation of the nitro groups, and as a result, TNT is notoriously recalcitrant to mineralization in the environment. Plant-based technologies to remediate this toxic pollutant rely on a solid understanding of the biochemical detoxification pathways involved...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30631330/editorial-molecular-and-cellular-mechanisms-of-the-legume-rhizobia-symbiosis
#5
EDITORIAL
Jianping Wang, Stig Uggerhøj Andersen, Pascal Ratet
No abstract text is available yet for this article.
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30631329/allelopathic-effect-of-the-invasive-ludwigia-hexapetala-on-growth-of-three-macrophyte-species
#6
Gabrielle Thiébaut, Lise Thouvenot, Hector Rodríguez-Pérez
The release of allelochemicals by plants can affect the performance of other organisms positively or negatively. We tested the effects of aqueous extracts and leachates derived from the leaves and roots of the invasive water primrose ( Ludwigia hexapetala ) on one submerged native species - Ceratophyllum demersum , and two exotic species - the submerged Egeria densa and the emergent growth form of Myriophyllum aquaticum . The effect of the aqueous extracts and leachates of L. hexapetala on photosynthetic yield, growth (i...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30627135/prediction-of-means-and-variances-of-crosses-with-genome-wide-marker-effects-in-barley
#7
Tanja Osthushenrich, Matthias Frisch, Carola Zenke-Philippi, Heidi Jaiser, Monika Spiller, László Cselényi, Kerstin Krumnacker, Susanna Boxberger, Doris Kopahnke, Antje Habekuß, Frank Ordon, Eva Herzog
Background: The expected genetic variance is an important criterion for the selection of crossing partners which will produce superior combinations of genotypes in their progeny. The advent of molecular markers has opened up new vistas for obtaining precise predictors for the genetic variance of a cross, but fast prediction methods that allow plant breeders to select crossing partners based on already available data from their breeding programs without complicated calculations or simulation of breeding populations are still lacking...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30627134/secondary-wall-regulating-nacs-differentially-bind-at-the-promoter-at-a-cellulose-synthase-a4-cis-eqtl
#8
Jennifer R Olins, Li Lin, Scott J Lee, Gina M Trabucco, Kirk J-M MacKinnon, Samuel P Hazen
Arabidopsis thaliana CELLULOSE SYNTHASE A4/7/8 (CESA4/7/8) are three non-redundant subunits of the secondary cell wall cellulose synthase complex. Transcript abundance of these genes can vary among genotypes and expression quantitative trait loci (eQTL) were identified in a recombinant population of the accessions Bay-0 and Shahdara. Genetic mapping and analysis of the transcript levels of CESAs between two distinct near isogenic lines (NILs) confirmed a change in CESA4 expression that segregates within that interval...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30627133/latitudinal-adaptation-and-genetic-insights-into-the-origins-of-cannabis-sativa-l
#9
Qingying Zhang, Xuan Chen, Hongyan Guo, Luisa M Trindade, Elma M J Salentijn, Rong Guo, Mengbi Guo, Yanping Xu, Ming Yang
Cannabis is one of the most important industrial crops distributed worldwide. However, the phylogeographic structure and domestication knowledge of this crop remains poorly understood. In this study, sequence variations of five chloroplast DNA (cpDNA) regions were investigated to address these questions. For the 645 individuals from 52 Cannabis accessions sampled (25 wild populations and 27 domesticated populations or cultivars), three haplogroups (Haplogroup H, M, L) were identified and these lineages exhibited distinct high-middle-low latitudinal gradients distribution pattern...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30627132/insights-into-the-inside-a-quantitative-histological-study-of-the-explosively-moving-style-in-marantaceae
#10
Markus Jerominek, Maria Will, Regine Claßen-Bockhoff
This study aims to identify the histological basis for the extraordinary, fast movement of the style in Marantaceae. Although this explosive pollination mechanism was subject of many studies, quantitative measurements to document volumetric changes have never been conducted. Based on physical parameters and limitations (poroelastic time), the movement itself is by far too fast to be explained by turgor changes solely. Therefore, we address the hypothesis that the style contains elastic structures to store energy allowing the fast movement...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30622554/genome-wide-association-studies-to-improve-wood-properties-challenges-and-prospects
#11
REVIEW
Qingzhang Du, Wenjie Lu, Mingyang Quan, Liang Xiao, Fangyuan Song, Peng Li, Daling Zhou, Jianbo Xie, Longxin Wang, Deqiang Zhang
Wood formation is an excellent model system for quantitative trait analysis due to the strong associations between the transcriptional and metabolic traits that contribute to this complex process. Investigating the genetic architecture and regulatory mechanisms underlying wood formation will enhance our understanding of the quantitative genetics and genomics of complex phenotypic variation. Genome-wide association studies (GWASs) represent an ideal statistical strategy for dissecting the genetic basis of complex quantitative traits...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30622553/gender-dimorphism-does-not-affect-secondary-compound-composition-in-juniperus-communis-after-shoot-cutting-in-northern-boreal-forests
#12
Sari Stark, Françoise Martz
Due to a difference in plant resource allocation to reproduction, the males of dioecious plants may be more growth-orientated, whereas females may allocate more resources for synthesizing secondary compounds. This mechanism is considered to cause gender-specific differences in the plant responses to the loss of plant biomass. Here, we tested gender dimorphism in the responses of common juniper ( Juniperus communis ) to shoot cutting in four juniper populations located in northern boreal forests in Finland. We collected shoots from uncut junipers and from junipers subjected to shoot cutting in the previous year, and analyzed them for their shoot growth as well as phenolic and terpenoid concentrations...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30622552/qtl-mapping-of-seed-vigor-of-backcross-inbred-lines-derived-from-oryza-longistaminata-under-artificial-aging
#13
Jie Jin, Weixiong Long, Liuting Wang, Xingdan Liu, Guojing Pan, Wei Xiang, Nengwu Li, Shaoqing Li
Seed vigor is an important character of seed quality that promotes rice to germinate rapidly from soil and developing to a strong seedling, especially in the current rice direct-sowing production system. However, previous studies for seed vigor mainly concentrate in cultivars, and less reports involving in wild rice. In this study, 152 backcross inbred lines (BILs) derived from wild rice Oryza longistaminata were genotyped with re-sequencing technology, and QTLs for seed vigor related traits under normal and artificial aging treatment were analyzed...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30622551/changes-in-spatiotemporal-patterns-of-20th-century-spruce-budworm-outbreaks-in-eastern-canadian-boreal-forests
#14
Lionel Navarro, Hubert Morin, Yves Bergeron, Miguel Montoro Girona
In scenarios of future climate change, there is a projectedincrease in the occurrence and severity of natural disturbances inboreal forests. Spruce budworm ( Choristoneura fumiferana) (SBW) is the main defoliator of conifer trees in the North American boreal forests affecting large areas and causing marked losses of timber supplies. However, the impact and the spatiotemporal patterns of SBW dynamics at the landscape scale over the last century remain poorly known. This is particularly true for northern regions dominated by spruce species...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30622550/-bacillus-velezensis-yc7010-enhances-plant-defenses-against-brown-planthopper-through-transcriptomic-and-metabolic-changes-in-rice
#15
Md Harun-Or-Rashid, Hyun-Jin Kim, Seon-In Yeom, Hyeon-Ah Yu, Md Maniruzzaman Manir, Surk-Sik Moon, Yang Jae Kang, Young Ryun Chung
Brown planthopper (BPH; Nilaparvata lugens Stål) is one of the most serious insect pests, which reduce rice yield remarkably in many rice-growing areas. A few plant growth-promoting rhizobacteria induce systemic resistance against herbivorous insects. Here we show that root drenching of rice seedlings with an endophytic strain Bacillus velezensis YC7010 enhanced defenses against BPH. Based on high-throughput transcriptome analysis, systemic resistance against BPH was induced by B. velezensis YC7010 via salicylic acid (SA)- and jasmonic acid (JA)-dependent pathways...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30622549/nac-family-transcription-factors-in-tobacco-and-their-potential-role-in-regulating-leaf-senescence
#16
Wei Li, Xiaoxu Li, Jiangtao Chao, Zenglin Zhang, Weifeng Wang, Yongfeng Guo
The NAC family is one of the largest families of plant-specific transcription factors (TFs) and NAC proteins play important regulatory roles in a variety of developmental and stress response processes in plants. Members of the NAC family TFs have been shown to be important regulators of leaf senescence in a number of plant species. Here we report the identification of the NAC family in tobacco ( Nicotiana tabacum ) and characterization of the potential role of some of the tobacco NAC TFs in regulating leaf senescence...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30622548/exogenous-hormonal-application-regulates-the-occurrence-of-wheat-tillers-by-changing-endogenous-hormones
#17
Tie Cai, Xiangping Meng, Xiaoli Liu, Tiening Liu, Hui Wang, Zhikuan Jia, Dongqing Yang, Xiaolong Ren
Plant hormones play important roles in regulating the occurrence of crop tillers. However, little is known about the relationships and the underlying mechanisms between endogenous hormones and the occurrence of wheat tillers induced by exogenous hormones. In this study, two winter wheat cultivars, Xinong 979 and Xiaoyan 22, were used to investigate the effects of the exogenous application of indole-3-acetic acid (IAA) and zeatin (Z) on the occurrence of wheat tillers and investigate underlying mechanisms regulating the occurrence of tillers...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30622547/tobacco-sunflower-and-high-biomass-src-clones-show-potential-for-trace-metal-phytoextraction-on-a-moderately-contaminated-field-site-in-belgium
#18
Sofie Thijs, Nele Witters, Jolien Janssen, Ann Ruttens, Nele Weyens, Rolf Herzig, Michel Mench, Stijn Van Slycken, Erik Meers, Linda Meiresonne, Jaco Vangronsveld
Phytoextraction could be a potential management option for diffusely Cd-Zn-Pb-polluted agricultural land in Northeast Belgium. The use of high yielding crops with a sufficiently high metal accumulation is preferred as these are expected to both gradually decontaminate the soil while generating an income through biomass valorization. To find out which high biomass crop possessed the highest and most constant (in time) phytoextraction potential on these soils, different plant species and different mutants or clones of each species, were evaluated during consecutive years...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30622546/revisiting-risk-governance-of-gm-plants-the-need-to-consider-new-and-emerging-gene-editing-techniques
#19
REVIEW
Sarah Z Agapito-Tenfen, Arinze S Okoli, Michael J Bernstein, Odd-Gunnar Wikmark, Anne I Myhr
New and emerging gene-editing techniques make it possible to target specific genes in species with greater speed and specificity than previously possible. Of major relevance for plant breeding, regulators and scientists are discussing how to regulate products developed using these gene-editing techniques. Such discussions include whether to adopt or adapt the current framework for GMO risk governance in evaluating the impacts of gene-edited plants, and derived products, on the environment, human and animal health and society...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30622545/the-idea-of-precaution-ethical-requirements-for-the-regulation-of-new-biotechnologies-in-the-environmental-field
#20
REVIEW
Klaus Peter Rippe, Ariane Willemsen
The rapid emergence of new biotechnologies for selectively altering genetic material-so-called genome editing-has sparked public controversy about how their development and application in the environmental fields are to be regulated. Since the use of these new technologies harbors not only considerable potential but also risks of serious damage whose occurrence is uncertain due to their application in complex environmental systems, many national and international legal authorities are currently adhering to policies of precaution...
2018: Frontiers in Plant Science
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