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Plant Molecular Biology

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https://www.readbyqxmd.com/read/29149417/spl13-regulates-shoot-branching-and-flowering-time-in-medicago-sativa
#1
Ruimin Gao, Margaret Y Gruber, Lisa Amyot, Abdelali Hannoufa
Our results show SPL13 plays a crucial role in regulating vegetative and reproductive development in Medicago sativa L. (alfalfa), and that MYB112 is targeted and downregulated by SPL13 in alfalfa. We previously showed that transgenic Medicago sativa (alfalfa) plants overexpressing microRNA156 (miR156) show a bushy phenotype, reduced internodal length, delayed flowering time, and enhanced biomass yield. In alfalfa, transcripts of seven SQUAMOSA-PROMOTER BINDING PROTEIN-LIKE (SPL) transcription factors, including SPL13, are targeted for cleavage by miR156...
November 17, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29143299/a-comparative-transcriptomic-approach-to-understanding-the-formation-of-cork
#2
Pau Boher, Marçal Soler, Anna Sánchez, Claire Hoede, Céline Noirot, Jorge Almiro Pinto Paiva, Olga Serra, Mercè Figueras
The transcriptome comparison of two oak species reveals possible candidates accounting for the exceptionally thick and pure cork oak phellem, such as those involved in secondary metabolism and phellogen activity. Cork oak, Quercus suber, differs from other Mediterranean oaks such as holm oak (Quercus ilex) by the thickness and organization of the external bark. While holm oak outer bark contains sequential periderms interspersed with dead secondary phloem (rhytidome), the cork oak outer bark only contains thick layers of phellem (cork rings) that accumulate until reaching a thickness that allows industrial uses...
November 15, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29143298/a-single-nucleotide-mutation-of-ispf-gene-involved-in-the-mep-pathway-for-isoprenoid-biosynthesis-causes-yellow-green-leaf-phenotype-in-rice
#3
Rui Huang, Yang Wang, Pingrong Wang, Chunmei Li, Fuliang Xiao, Nenggang Chen, Na Li, Caixia Li, Changhui Sun, Lihua Li, Rongjun Chen, Zhengjun Xu, Jianqing Zhu, Xiaojian Deng
We identified IspF gene through yellow-green leaf mutant 505ys in rice. OsIspF was expressed in all tissues detected, and its encoded protein was targeted to the chloroplast. On expression levels of genes in this mutant, OsIspF itself and the genes encoding other enzymes of the MEP pathway and chlorophyll synthase were all up-regulated, however, among eight genes associated with photosynthesis, only psaA, psaN and psbA genes for three reaction center subunits of photosystem obviously changed. Isoprenoids are the most abundant natural compounds in all organisms, which originate from the basic five-carbon units isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP)...
November 15, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29139059/evolution-of-rubisco-activase-gene-in-plants
#4
Ragupathi Nagarajan, Kulvinder S Gill
Rubisco activase of plants evolved in a stepwise manner without losing its function to adapt to the major evolutionary events including endosymbiosis and land colonization. Rubisco activase is an essential enzyme for photosynthesis, which removes inhibitory sugar phosphates from the active sites of Rubisco, a process necessary for Rubisco activation and carbon fixation. The gene probably evolved in cyanobacteria as different species differ for its presence. However, the gene is present in all other plant species...
November 14, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29119347/n-glycan-structures-and-downstream-mannose-phosphorylation-of-plant-recombinant-human-alpha-l-iduronidase-toward-development-of-enzyme-replacement-therapy-for-mucopolysaccharidosis-i
#5
Owen M Pierce, Grant R McNair, Xu He, Hiroyuki Kajiura, Kazuhito Fujiyama, Allison R Kermode
Arabidopsis N-glycan processing mutants provide the basis for tailoring recombinant enzymes for use as replacement therapeutics to treat lysosomal storage diseases, including N-glycan mannose phosphorylation to ensure lysosomal trafficking and efficacy. Functional recombinant human alpha-L-iduronidase (IDUA; EC 3.2.1.76) enzymes were generated in seeds of the Arabidopsis thaliana complex-glycan-deficient (cgl) C5 background, which is deficient in the activity of N-acetylglucosaminyl transferase I, and in seeds of the Arabidopsis gm1 mutant, which lacks Golgi α-mannosidase I (GM1) activity...
November 8, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29119346/structure-target-specificity-and-expression-of-pn_lnc_n13-a-long-non-coding-rna-differentially-expressed-in-apomictic-and-sexual-paspalum-notatum
#6
Ana Ochogavía, Giulio Galla, José Guillermo Seijo, Ana María González, Michele Bellucci, Fulvio Pupilli, Gianni Barcaccia, Emidio Albertini, Silvina Pessino
KEY MESSAGE: ncRNA PN_LNC_N13 shows contrasting expression in reproductive organs of sexual and apomictic Paspalum notatum genotypes. Apomictic plants set genetically maternal seeds whose embryos derive by parthenogenesis from unreduced egg cells, giving rise to clonal offspring. Several Paspalum notatum apomixis related genes were identified in prior work by comparative transcriptome analyses. Here, one of these candidates (namely N13) was characterized. N13 belongs to a Paspalum gene family including 30-60 members, of which at least eight are expressed at moderate levels in florets...
November 8, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29094279/high-throughput-transcriptome-analysis-of-coffee-reveals-prehaustorial-resistance-in-response-to-hemileia-vastatrix-infection
#7
Juan Carlos Florez, Luciana Souto Mofatto, Rejane do Livramento Freitas-Lopes, Sávio Siqueira Ferreira, Eunize Maciel Zambolim, Marcelo Falsarella Carazzolle, Laércio Zambolim, Eveline Teixeira Caixeta
We provide a transcriptional profile of coffee rust interaction and identified putative up regulated resistant genes Coffee rust disease, caused by the fungus Hemileia vastatrix, is one of the major diseases in coffee throughout the world. The use of resistant cultivars is considered to be the most effective control strategy for this disease. To identify candidate genes related to different mechanism defense in coffee, we present a time-course comparative gene expression profile of Caturra (susceptible) and Híbrido de Timor (HdT, resistant) in response to H...
November 1, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29094278/substrates-of-the-chloroplast-small-heat-shock-proteins-22e-f-point-to-thermolability-as-a-regulative-switch-for-heat-acclimation-in-chlamydomonas-reinhardtii
#8
Mark Rütgers, Ligia Segatto Muranaka, Timo Mühlhaus, Frederik Sommer, Sylvia Thoms, Juliane Schurig, Felix Willmund, Miriam Schulz-Raffelt, Michael Schroda
We have identified 39 proteins that interact directly or indirectly with high confidence with chloroplast HSP22E/F under heat stress thus revealing chloroplast processes affected by heat. Under conditions promoting protein unfolding, small heat shock proteins (sHsps) prevent the irreversible aggregation of unfolding proteins by integrating into forming aggregates. Aggregates containing sHsps facilitate the access of Hsp70 and ClpB/Hsp104 chaperones, which in ATP-dependent reactions disentangle individual proteins from the aggregates and assist in their refolding to the native state...
November 1, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29090430/hybrid-incompatibilities-in-interspecific-crosses-between-tetraploid-wheat-and-its-wild-diploid-relative-aegilops-umbellulata
#9
Moeko Okada, Kentaro Yoshida, Shigeo Takumi
Hybrid abnormalities, severe growth abortion and grass-clump dwarfism, were found in the tetraploid wheat/Aegilops umbellulata hybrids, and the gene expression changes were conserved in the hybrids with those in other wheat synthetic hexaploids. Aegilops umbellulata Zhuk., a diploid goatgrass species with a UU genome, has been utilized as a genetic resource for wheat breeding. Here, we examine the reproductive barriers between tetraploid wheat cultivar Langdon (Ldn) and various Ae. umbellulata accessions by conducting interspecific crossings...
October 31, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29090429/evolvement-of-transgenic-male-sterility-and-fertility-restoration-system-in-rice-for-production-of-hybrid-varieties
#10
Gundra Sivakrishna Rao, Priyanka Deveshwar, Malini Sharma, Sanjay Kapoor, Khareedu Venkateswara Rao
We have developed a unique male-sterility and fertility-restoration system in rice by combining Brassica napus cysteine-protease gene (BnCysP1) with anther-specific P12 promoter of rice for facilitating production of hybrid varieties. In diverse crop plants, male-sterility has been exploited as a useful approach for production of hybrid varieties to harness the benefits of hybrid vigour. The promoter region of Os12bglu38 gene of rice has been isolated from the developing panicles and was designated as P12. The promoter was fused with gusA reporter gene and was expressed in Arabidopsis and rice systems...
October 31, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29086190/correction-to-cyp79-p450-monooxygenases-in-gymnosperms-cyp79a118-is-associated-with-the-formation-of-taxiphyllin-in-taxus-baccata
#11
Katrin Luck, Qidong Jia, Meret Huber, Vinzenz Handrick, Gane Ka-Shu Wong, David R Nelson, Feng Chen, Jonathan Gershenzon, Tobias G Köllner
Due to an unfortunate turn of events, the funding note for Open Access publication was not properly provided in the original publication. Hence, the original article has been corrected. The opening line of the Acknowledgement section should read.
October 30, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29086189/meta-expression-analysis-of-unannotated-genes-in-rice-and-approaches-for-network-construction-to-suggest-the-probable-roles
#12
Anil Kumar Nalini Chandran, Nikita Bhatnagar, Yo-Han Yoo, Sunok Moon, Sun-Ah Park, Woo-Jong Hong, Beom-Gi Kim, Gynheung An, Ki-Hong Jung
This work suggests 2020 potential candidates in rice for the functional annotation of unannotated genes using meta-analysis of anatomical samples derived from microarray and RNA-seq technologies and this information will be useful to identify novel morphological agronomic traits. Although the genome of rice (Oryza sativa) has been sequenced, 14,365 genes are considered unannotated because they lack putative annotation information. According to the Rice Genome Annotation Project Database ( http://rice.plantbiology...
October 30, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29076026/rna-seq-analysis-provides-insight-into-reprogramming-of-culm-development-in-zizania-latifolia-induced-by-ustilago-esculenta
#13
Zhi-Dan Wang, Ning Yan, Zheng-Hong Wang, Xiao-Huan Zhang, Jing-Ze Zhang, Hui-Min Xue, Li-Xia Wang, Qi Zhan, Ying-Ping Xu, De-Ping Guo
We report a transcriptome assembly and expression profiles from RNA-Seq data and identify genes responsible for culm gall formation in Zizania latifolia induced by Ustilago esculenta. The smut fungus Ustilago esculenta can induce culm gall in Zizania latifolia, which is used as a vegetable in Asian countries. However, the underlying molecular mechanism of culm gall formation is still unclear. To characterize the processes underlying this host-fungus association, we performed transcriptomic and expression profiling analyses of culms from Z...
October 26, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29076025/arabidopsis-khz1-and-khz2-two-novel-non-tandem-ccch-zinc-finger-and-k-homolog-domain-proteins-have-redundant-roles-in-the-regulation-of-flowering-and-senescence
#14
Zongyun Yan, Jianheng Jia, Xiaoyuan Yan, Huiying Shi, Yuzhen Han
The two novel CCCH zinc-finger and K-homolog (KH) proteins, KHZ1 and KHZ2, play important roles in regulating flowering and senescence redundantly in Arabidopsis. The CCCH zinc-finger proteins and K-homolog (KH) proteins play important roles in plant development and stress responses. However, the biological functions of many CCCH zinc-finger proteins and KH proteins remain uncharacterized. In Arabidopsis, KHZ1 and KHZ2 are characterized as two novel CCCH zinc-finger and KH domain proteins which belong to subfamily VII in CCCH family...
October 26, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29058103/effects-of-transgenic-expression-of-brevibacterium-linens-methionine-gamma-lyase-mgl-on-accumulation-of-tylenchulus-semipenetrans-and-key-aminoacid-contents-in-carrizo-citrange
#15
Elenor Castillo, Federico Martinelli, Florence Zakharov-Negre, Susan E Ebeler, Tom R Buzo, Michael V McKenry, Abhaya M Dandekar
Carrizo transgenic plants overexpressing methionine-gamma-lyase produced dimethyl sulfide. The transgenic plants displayed more resistance to nematode attacks (Tylenculus semipenetrans) and may represent an innovative strategy for nematode control. Tylenchulus semipenetrans is a nematode pest of many citrus varieties that causes extensive damage to commercial crops worldwide. Carrizo citrange vr. (Citrus sinensis L. Usb × Poncirus trifoliate L. Raf) plants overexpressing Brevibacterium linens methionine-gamma-lyase (BlMGL) produced the sulfur volatile compound dimethyl sulfide (DMS)...
October 20, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29046998/metabolite-profiling-and-associated-gene-expression-reveal-two-metabolic-shifts-during-the-seed-to-seedling-transition-in-arabidopsis-thaliana
#16
Anderson Tadeu Silva, Wilco Ligterink, Henk W M Hilhorst
Metabolic and transcriptomic correlation analysis identified two distinctive profiles involved in the metabolic preparation for seed germination and seedling establishment, respectively. Transcripts were identified that may control metabolic fluxes. The transition from a quiescent metabolic state (dry seed) to the active state of a vigorous seedling is crucial in the plant's life cycle. We analysed this complex physiological trait by measuring the changes in primary metabolism that occur during the transition in order to determine which metabolic networks are operational...
October 18, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29032395/ptxd-gene-in-combination-with-phosphite-serves-as-a-highly-effective-selection-system-to-generate-transgenic-cotton-gossypium-hirsutum-l
#17
Devendra Pandeya, LeAnne M Campbell, Eugenia Nunes, Damar L Lopez-Arredondo, Madhusudhana R Janga, Luis Herrera-Estrella, Keerti S Rathore
This report demonstrates the usefulness of ptxD/phosphite as a selection system that not only provides a highly efficient and simple means to generate transgenic cotton plants, but also helps address many of the concerns related to the use of antibiotic and herbicide resistance genes in the production of transgenic crops. Two of the most popular dominant selectable marker systems for plant transformation are based on either antibiotic or herbicide resistance genes. Due to concerns regarding their safety and in order to stack multiple traits in a single plant, there is a need for alternative selectable marker genes...
October 14, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28924726/overexpression-of-the-transcription-factor-nf-yc9-confers-abscisic-acid-hypersensitivity-in-arabidopsis
#18
Chao Bi, Yu Ma, Xiao-Fang Wang, Da-Peng Zhang
Nuclear factor Y (NF-Y) family proteins are involved in many developmental processes and responses to environmental cues in plants, but whether and how they regulate phytohormone abscisic acid (ABA) signaling need further studies. In the present study, we showed that over-expression of the NF-YC9 gene confers ABA hypersensitivity in both the early seedling growth and stomatal response, while down-regulation of NF-YC9 does not affect ABA response in these processes. We also showed that over-expression of the NF-YC9 gene confers salt and osmotic hypersensitivity in early seedling growth, which is likely to be directly associated with the ABA hypersensitivity...
September 18, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28918565/forward-genetic-screens-identify-a-role-for-the-mitochondrial-her2-in-e-2-hexenal-responsiveness
#19
Alessandra Scala, Rossana Mirabella, Joachim Goedhart, Michel de Vries, Michel A Haring, Robert C Schuurink
This work adds a new player, HER2, downstream of the perception of E-2-hexenal, a green leaf volatile, and shows that E-2-hexenal specifically changes the redox status of the mitochondria. It is widely accepted that plants produce and respond to green leaf volatiles (GLVs), but the molecular components involved in transducing their perception are largely unknown. The GLV E-2-hexenal inhibits root elongation in seedlings and, using this phenotype, we isolated E-2-hexenal response (her) Arabidopsis thaliana mutants...
September 16, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29052099/the-novel-ethylene-responsive-factor-cserf025-affects-the-development-of-fruit-bending-in-cucumber
#20
Chunhua Wang, Ming Xin, Xiuyan Zhou, Chunhong Liu, Shengnan Li, Dong Liu, Yuan Xu, Zhiwei Qin
Overexpression of CsERF025 induces fruit bending by promoting the production of ethylene. Cucumber fruit bending critically affects cucumber quality, but the mechanism that causes fruit bending remains unclear. To better understand this mechanism, we performed transcriptome analyses on tissues from the convex (C1) and concave (C2) sides of bending and straight (S) fruit at 2 days post anthesis (DPA). We identified a total of 281 differentially expressed genes (DEGs) from both the convex and concave sides of bent fruit that showed significantly different expression profiles relative to straight fruits...
November 2017: Plant Molecular Biology
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