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Plant Molecular Biology Reporter

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https://www.readbyqxmd.com/read/27881899/the-comparatively-proteomic-analysis-in-response-to-cold-stress-in-cassava-plantlets
#1
Feifei An, Genghu Li, Qing X Li, Kaimian Li, Luiz J C B Carvalho, Wenjun Ou, Songbi Chen
Cassava (Manihot esculenta Crantz) is a tropical root crop and sensitive to low temperature. However, it is poorly to know how cassava can modify its metabolism and growth to adapt to cold stress. An investigation aimed at a better understanding of cold-tolerant mechanism of cassava plantlets was carried out with the approaches of physiology and proteomics in the present study. The principal component analysis of seven physiological characteristics showed that electrolyte leakage (EL), chlorophyll content, and malondialdehyde (MDA) may be the most important physiological indexes for determining cold-resistant abilities of cassava...
2016: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/27429510/genes-encoding-cucumber-full-size-abcg-proteins-show-different-responses-to-plant-growth-regulators-and-sclareolide
#2
Adam Rajsz, Anna Warzybok, Magdalena Migocka
Full-size members of the ABCG (ATP-binding cassette, subfamily G) subfamily of ABC transporters have been found only in plants and fungi. The plant genes encoding full-size ABCGs identified so far appeared to be differentially regulated under various environmental constraints, plant growth regulators, and microbial elicitors, indicating a broad functional role of these proteins in plant responses to abiotic and biotic stress. Nevertheless, the structure and physiological function of full-size ABCGs in many plant species are still unknown...
2016: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/27182107/expression-of-ipt-in-asakura-sanshoo-zanthoxylum-piperitum-l-dc-f-inerme-makino-alters-tree-architecture-delays-leaf-senescence-and-changes-leaf-essential-oil-composition
#3
Xiao-Fang Zeng, De-Gang Zhao
The IPT gene encodes isopentenyl pyrophosphate transferase, a key enzyme in cytokinin biosynthesis. We introduced IPT under the control of the CaMV35S promoter into Asakura-sanshoo (Zanthoxylum piperitum (L.) DC. f. inerme Makino) via stable Agrobacterium tumefaciens-mediated transformation. Three of 3-year-old transgenic Asakura-sanshoo lines Y5, Y16, and Y17 were used to evaluate the effects of IPT expression on the morphological characteristics, leaf senescence, and essential oil composition. Introduced IPT into Asakura-sanshoo stimulated an increase in cytokinin content and a decrease in auxin level...
2016: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/27182106/effects-of-endogenous-salicylic-acid-during-calcium-deficiency-induced-tipburn-in-chinese-cabbage-brassica-rapa-l-ssp-pekinensis
#4
Tongbing Su, Shuancang Yu, Ruifang Yu, Fenglan Zhang, Yangjun Yu, Deshuang Zhang, Xiuyun Zhao, Weihong Wang
By cultivating tipburn-susceptible plants in modified Hoagland's medium containing of gradient exogenous calcium (Ca(2+)), we have shown that Ca(2+) deficiency is one of the main causes of tipburn in Chinese cabbage (Brassica rapa L. ssp. pekinensis). The effect of endogenous plant Ca(2+) concentrations on tipburn was also studied in a doubled haploid (DH) population consisting of 100 individuals, but no correlation was found. We then examined the expression of 12 Ca(2+) transporter genes that function in cytosolic Ca(2+) homeostasis in both tipburn-susceptible and tipburn-resistant plants under normal and tipburn-inducing conditions...
2016: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/26843780/comparative-transcriptome-analysis-of-isoetes-sinensis-under-terrestrial-and-submerged-conditions
#5
Tao Yang, Xing Liu
Isoetes L. is an ancient genus of heterosporous lycopsids with a unique phylogenetic position. Repeated adaptations to environmental changes over time have contributed to occupying a variety of niches in Isoetes. However, we know little about how they adapt to the environmental changes, and the sequence resources are very limited in public databases. Isoetes sinensis is an amphibious plant in this genus, alternating frequently between terrestrial and aquatic environments. In this study, I. sinensis was applied to investigate the adaptations under terrestrial (TC) and submerged (ST) conditions using Illumina RNA-sequencing technology...
2016: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/26843779/assessment-of-genetic-diversity-in-secale-cereale-based-on-ssr-markers
#6
M Targońska, H Bolibok-Brągoszewska, M Rakoczy-Trojanowska
The primary aim of this study was to estimate genetic diversity among Secale cereale L. accessions using 22 previously published simple sequence repeat (SSR) markers. The plant material included 367 rye accessions comprising historical and contemporary cultivars, cultivated materials, landraces, and breeding strains from the Polish breeding company Danko. The studied accessions represented a wide geographical diversity. Several methods were employed to analyze genetic diversity among the Secale cereale L. accessions and to determine population structure: principal coordinate analysis (PCoA), neighbor-joining (NJ), and Bayesian clustering...
2016: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/26924884/use-of-alpha-beta-estrogen-receptor-as-a-new-tool-for-detection-of-specific-small-molecule-activity
#7
Samir Kumar Gunjan, Dennis Trent Rogers, Jingxian Zhang, Kil-Young Yun, Deane L Falcone, John Littleton
Cell-based screening methods for nuclear receptor ligands that use transgenic plant cells expressing a single human NR may have advantages over other eukaryotic systems which express multiple NRs. For example, signal-to-noise ratio might be improved because ligands would be less likely to bind to other NRs and/or less likely to cause confounding functional changes in plant cells. As a first step toward this aim we have expressed in plants truncated human estrogen receptor (ER) constructs linked to reporters, or selective markers such as luciferase, green fluorescent protein (GFP) and hygromycin...
December 1, 2015: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/26752808/cucumber-possesses-a-single-terminal-alternative-oxidase-gene-that-is-upregulated-by-cold-stress-and-in-the-mosaic-msc-mitochondrial-mutants
#8
Tomasz L Mróz, Michael J Havey, Grzegorz Bartoszewski
Alternative oxidase (AOX) is a mitochondrial terminal oxidase which is responsible for an alternative route of electron transport in the respiratory chain. This nuclear-encoded enzyme is involved in a major path of survival under adverse conditions by transfer of electrons from ubiquinol instead of the main cytochrome pathway. AOX protects against unexpected inhibition of the cytochrome c oxidase pathway and plays an important role in stress tolerance. Two AOX subfamilies (AOX1 and AOX2) exist in higher plants and are usually encoded by small gene families...
2015: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/26752807/transcriptome-profiling-of-wild-arachis-from-water-limited-environments-uncovers-drought-tolerance-candidate-genes
#9
Ana C M Brasileiro, Carolina V Morgante, Ana C G Araujo, Soraya C M Leal-Bertioli, Amanda K Silva, Andressa C Q Martins, Christina C Vinson, Candice M R Santos, Orzenil Bonfim, Roberto C Togawa, Mario A P Saraiva, David J Bertioli, Patricia M Guimaraes
Peanut (Arachis hypogaea L.) is an important legume cultivated mostly in drought-prone areas where its productivity can be limited by water scarcity. The development of more drought-tolerant varieties is, therefore, a priority for peanut breeding programs worldwide. In contrast to cultivated peanut, wild relatives have a broader genetic diversity and constitute a rich source of resistance/tolerance alleles to biotic and abiotic stresses. The present study takes advantage of this diversity to identify drought-responsive genes by analyzing the expression profile of two wild species, Arachis duranensis and Arachis magna (AA and BB genomes, respectively), in response to progressive water deficit in soil...
2015: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/26696694/transcriptional-control-of-glutaredoxin-grxc9-expression-by-a-salicylic-acid-dependent-and-npr1-independent-pathway-in-arabidopsis
#10
Ariel Herrera-Vásquez, Loreto Carvallo, Francisca Blanco, Mariola Tobar, Eva Villarroel-Candia, Jesús Vicente-Carbajosa, Paula Salinas, Loreto Holuigue
Salicylic acid (SA) is a key hormone that mediates gene transcriptional reprogramming in the context of the defense response to stress. GRXC9, coding for a CC-type glutaredoxin from Arabidopsis, is an SA-responsive gene induced early and transiently by an NPR1-independent pathway. Here, we address the mechanism involved in this SA-dependent pathway, using GRXC9 as a model gene. We first established that GRXC9 expression is induced by UVB exposure through this pathway, validating its activation in a physiological stress condition...
2015: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/26339121/multiple-qtls-linked-to-agro-morphological-and-physiological-traits-related-to-drought-tolerance-in-potato
#11
M Awais Khan, David Saravia, Susan Munive, Flavio Lozano, Evelyn Farfan, Raul Eyzaguirre, Merideth Bonierbale
Dissection of the genetic architecture of adaptation and abiotic stress-related traits is highly desirable for developing drought-tolerant potatoes and enhancing the resilience of existing cultivars, particularly as agricultural production in rain-fed areas may be reduced by up to 50 % by 2020. The "DMDD" potato progeny was developed at International Potato Center (CIP) by crossing the sequenced double monoploid line DM and a diploid cultivar of the Solanum tuberosum diploid Andigenum Goniocalyx group. Recently, a high-density integrated genetic map based on single nucleotide polymorphism (SNP), diversity array technology (DArT), simple sequence repeats (SSRs), and amplified fragment length polymorphism (AFLP) markers was also made available for this population...
2015: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/26339120/prosystemin-overexpression-in-tomato-enhances-resistance-to-different-biotic-stresses-by-activating-genes-of-multiple-signaling-pathways
#12
Mariangela Coppola, Giandomenico Corrado, Valentina Coppola, Pasquale Cascone, Rosanna Martinelli, Maria Cristina Digilio, Francesco Pennacchio, Rosa Rao
Systemin is a signal peptide that promotes the response to wounding and herbivore attack in tomato. This 18-amino acid peptide is released from a larger precursor, prosystemin. To study the role of systemin as a modulator of defense signaling, we generated tomato (Solanum lycopersicum) transgenic plants that overexpress the prosystemin cDNA. We carried out a transcriptomic analysis comparing two different transgenic events with the untransformed control. The Gene Ontology categories of the 503 differentially expressed genes indicated that several biological functions were affected...
2015: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/25999664/different-gene-expressions-of-resistant-and-susceptible-hop-cultivars-in-response-to-infection-with-a-highly-aggressive-strain-of-verticillium-albo-atrum
#13
Sara Cregeen, Sebastjan Radisek, Stanislav Mandelc, Boris Turk, Natasa Stajner, Jernej Jakse, Branka Javornik
Verticillium wilt has become a serious threat to hop production in Europe due to outbreaks of lethal wilt caused by a highly virulent strain of Verticillium albo-atrum. In order to enhance our understanding of resistance mechanisms, the fungal colonization patterns and interactions of resistant and susceptible hop cultivars infected with V. albo-atrum were analysed in time course experiments. Quantification of fungal DNA showed marked differences in spatial and temporal fungal colonization patterns in the two cultivars...
2015: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/25999663/origin-and-speciation-of-picea-schrenkiana-and-picea-smithiana-in-the-center-asian-highlands-and-himalayas
#14
Lili Li, Yongshuai Sun, Jiabin Zou, Wei Yue, Xi Wang, Jianquan Liu
Elucidating the evolutionary history of current species diversity, especially trees with large effective population sizes and long generation times, is a complicated exercise confounded by gene flow and incomplete lineage sorting. In the present study, we aim to determine the origin and speciation of Picea schrenkiana and Picea smithiana using population genetic data from chloroplast (cp), mitochondrial (mt), and nuclear (nr) genomes. These two species occur in the Central Asian Highlands and Himalayas, respectively, where they are isolated from other Asian congeneric species by the Qinghai-Tibet Plateau (QTP) or adjacent deserts...
2015: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/25999662/suppress-to-survive-implication-of-plant-viruses-in-ptgs
#15
Przemysław Wieczorek, Aleksandra Obrępalska-Stęplowska
In higher plants, evolutionarily conserved processes playing an essential role during gene expression rely on small noncoding RNA molecules (sRNA). Within a wide range of sRNA-dependent cellular events, there is posttranscriptional gene silencing, the process that is activated in response to the presence of double-stranded RNAs (dsRNAs) in planta. The sequence-specific mechanism of silencing is based on RNase-mediated trimming of dsRNAs into translationally inactive short molecules. Viruses invading and replicating in host are also a source of dsRNAs and are recognized as such by cellular posttranscriptional silencing machinery leading to degradation of the pathogenic RNA...
2015: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/25620837/remnants-of-the-legume-ancestral-genome-preserved-in-gene-rich-regions-insights-from-lupinus-angustifolius-physical-genetic-and-comparative-mapping
#16
Michał Książkiewicz, Andrzej Zielezinski, Katarzyna Wyrwa, Anna Szczepaniak, Sandra Rychel, Wojciech Karlowski, Bogdan Wolko, Barbara Naganowska
The narrow-leafed lupin (Lupinus angustifolius) was recently considered as a legume reference species. Genetic resources have been developed, including a draft genome sequence, linkage maps, nuclear DNA libraries, and cytogenetic chromosome-specific landmarks. Here, we used a complex approach, involving DNA fingerprinting, sequencing, genetic mapping, and molecular cytogenetics, to localize and analyze L. angustifolius gene-rich regions (GRRs). A L. angustifolius genomic bacterial artificial chromosome (BAC) library was screened with short sequence repeat (SSR)-based probes...
2015: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/25190903/gene-family-analysis-of-the-arabidopsis-nf-ya-transcription-factors-reveals-opposing-abscisic-acid-responses-during-seed-germination
#17
Chamindika L Siriwardana, Roderick W Kumimoto, Daniel S Jones, Ben F Holt
In the plant kingdom, each of the NUCLEAR FACTOR-Y (NF-Y) transcription factor families, NF-YA, NF-YB, and NF-YC, has undergone a great expansion compared to the animal kingdom. For example, Arabidopsis thaliana has 10 members of each gene family compared to only one in humans. Progress towards understanding the significance of this expansion is limited due to a lack of studies looking at the complete gene family during plant development. In the current study, transgenic overexpression lines were created for all 10 Arabidopsis NF-YA genes and examined for general development and alterations in abscisic acid (ABA)-mediated seed germination...
2014: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/24563578/profiling-gene-expression-in-germinating-brassica-roots
#18
Myoung Ryoul Park, Yi-Hong Wang, Karl H Hasenstein
Based on previously developed solid-phase gene extraction (SPGE) we examined the mRNA profile in primary roots of Brassica rapa seedlings for highly expressed genes like ACT7 (actin7), TUB (tubulin1), UBQ (ubiquitin), and low expressed GLK (glucokinase) during the first day post-germination. The assessment was based on the mRNA load of the SPGE probe of about 2.1 ng. The number of copies of the investigated genes changed spatially along the length of primary roots. The expression level of all genes differed significantly at each sample position...
2014: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/24465085/an-optimized-protocol-to-increase-virus-induced-gene-silencing-efficiency-and-minimize-viral-symptoms-in-petunia
#19
Shaun R Broderick, Michelle L Jones
Virus-induced gene silencing (VIGS) is used to down-regulate endogenous plant genes. VIGS efficiency depends on viral proliferation and systemic movement throughout the plant. Although tobacco rattle virus (TRV)-based VIGS has been successfully used in petunia (Petunia × hybrida), the protocol has not been thoroughly optimized for efficient and uniform gene down-regulation in this species. Therefore, we evaluated six parameters that improved VIGS in petunia. Inoculation of mechanically wounded shoot apical meristems induced the most effective and consistent silencing compared to other methods of inoculation...
2014: Plant Molecular Biology Reporter
https://www.readbyqxmd.com/read/24465084/overexpression-of-ptsos2-enhances-salt-tolerance-in-transgenic-poplars
#20
Jie Zhou, Jingjing Wang, Yufang Bi, Like Wang, Luozhong Tang, Xiang Yu, Misato Ohtani, Taku Demura, Qiang Zhuge
Protein kinases are major signal transduction factors that have a central role in mediating acclimation to environmental changes in eukaryotic organisms. In this study, we cloned and identified three salt overly sensitive 2 (SOS2) genes in the woody plant Populus trichocarpa, designated as PtSOS2.1, PtSOS2.2, and PtSOS2.3, which were transformed into hybrid poplar clone T89 (Populus tremula× Populus tremuloides Michx clone T89) mediated by Agrobacterium tumefaciens. Southern and northern blot analyses verified that the three genes integrated into the plant genome, and were expressed at a stable transcription level...
2014: Plant Molecular Biology Reporter
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