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Plant Molecular Biology

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https://www.readbyqxmd.com/read/28190131/association-genetics-of-phenolic-needle-compounds-in-norway-spruce-with-variable-susceptibility-to-needle-bladder-rust
#1
Andrea Ganthaler, Wolfgang Stöggl, Stefan Mayr, Ilse Kranner, Silvio Schüler, Elisabeth Wischnitzki, Eva Maria Sehr, Silvia Fluch, Carlos Trujillo-Moya
Accumulation of phenolic needle metabolites in Norway spruce is regulated by many genes with small and additive effects and is correlated with the susceptibility against fungal attack. Norway spruce accumulates high foliar concentrations of secondary phenolic metabolites, with important functions for pathogen defence responses. However, the molecular genetic basis underlying the quantitative variation of phenolic compounds and their role in enhanced resistance of spruce to infection by needle bladder rust are unknown...
February 11, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28161858/wheat-drought-responsive-wxpl-transcription-factors-regulate-cuticle-biosynthesis-genes
#2
Huihui Bi, Sukanya Luang, Yuan Li, Natalia Bazanova, Nikolai Borisjuk, Maria Hrmova, Sergiy Lopato
The cuticle forms a hydrophobic waxy layer that covers plant organs and provides protection from biotic and abiotic stresses. Transcription of genes responsible for cuticle formation is regulated by several types of transcription factors (TFs). Five orthologous to WAX PRODUCTION (WXP1 and WXP2) genes from Medicago truncatula were isolated from a cDNA library prepared from flag leaves and spikes of drought tolerant wheat (Triticum aestivum, breeding line RAC875) and designated TaWXP-like (TaWXPL) genes. Tissue-specific and drought-responsive expression of TaWXPL1D and TaWXPL2B was investigated by quantitative RT-PCR in two Australian wheat genotypes, RAC875 and Kukri, with contrasting glaucousness and drought tolerance...
February 4, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28160166/depletion-of-abscisic-acid-levels-in-roots-of-flooded-carrizo-citrange-poncirus-trifoliata-l-raf-%C3%A3-citrus-sinensis-l-osb-plants-is-a-stress-specific-response-associated-to-the-differential-expression-of-pyr-pyl-rcar-receptors
#3
Vicent Arbona, Sara I Zandalinas, Matías Manzi, Miguel González-Guzmán, Pedro L Rodriguez, Aurelio Gómez-Cadenas
Soil flooding reduces root abscisic acid (ABA) levels in citrus, conversely to what happens under drought. Despite this reduction, microarray analyses suggested the existence of a residual ABA signaling in roots of flooded Carrizo citrange seedlings. The comparison of ABA metabolism and signaling in roots of flooded and water stressed plants of Carrizo citrange revealed that the hormone depletion was linked to the upregulation of CsAOG, involved in ABA glycosyl ester (ABAGE) synthesis, and to a moderate induction of catabolism (CsCYP707A, an ABA 8'-hydroxylase) and buildup of dehydrophaseic acid (DPA)...
February 3, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28155188/inducible-expression-of-bs2-r-gene-from-capsicum-chacoense-in-sweet-orange-citrus-sinensis-l-osbeck-confers-enhanced-resistance-to-citrus-canker-disease
#4
Lorena Noelia Sendín, Ingrid Georgina Orce, Rocío Liliana Gómez, Ramón Enrique, Carlos Froilán Grellet Bournonville, Aldo Sergio Noguera, Adrián Alberto Vojnov, María Rosa Marano, Atilio Pedro Castagnaro, María Paula Filippone
Transgenic expression of the pepper Bs2 gene confers resistance to Xanthomonas campestris pv. vesicatoria (Xcv) pathogenic strains which contain the avrBs2 avirulence gene in susceptible pepper and tomato varieties. The avrBs2 gene is highly conserved among members of the Xanthomonas genus, and the avrBs2 of Xcv shares 96% homology with the avrBs2 of Xanthomonas citri subsp. citri (Xcc), the causal agent of citrus canker disease. A previous study showed that the transient expression of pepper Bs2 in lemon leaves reduced canker formation and induced plant defence mechanisms...
February 2, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28150126/opposite-roles-of-the-arabidopsis-cytokinin-receptors-ahk2-and-ahk3-in-the-expression-of-plastid-genes-and-genes-for-the-plastid-transcriptional-machinery-during-senescence
#5
Maria N Danilova, Natalia V Kudryakova, Anastasia S Doroshenko, Dmitry A Zabrodin, Zulfira F Rakhmankulova, Ralf Oelmüller, Victor V Kusnetsov
Cytokinin membrane receptors of the Arabidopsis thaliana AHK2 and AHK3 play opposite roles in the expression of plastid genes and genes for the plastid transcriptional machinery during leaf senescence Loss-of-function mutants of Arabidopsis thaliana were used to study the role of cytokinin receptors in the expression of chloroplast genes during leaf senescence. Accumulation of transcripts of several plastid-encoded genes is dependent on the АНК2/АНК3 receptor combination. АНК2 is particularly important at the final stage of plant development and, unlike АНК3, a positive regulator of leaf senescence...
February 1, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28108965/transcriptomic-and-hormone-analyses-reveal-mechanisms-underlying-petal-elongation-in-chrysanthemum-morifolium-jinba
#6
Jingjing Wang, Haibin Wang, Lian Ding, Aiping Song, Feng Shen, Jiafu Jiang, Sumei Chen, Fadi Chen
Auxin regulates chrysanthemum petal elongation by promoting cell elongation. Transcriptomic analysis shows that auxin signal transduction may connect with other transcription factors by TCPs to regulate chrysanthemum petal elongation. As an ornamental species, Chrysanthemum morifolium has high ornamental and economic value. Petal size is the primary factor that influences the ornamental value of chrysanthemum, but the mechanism underlying the development of C. morifolium petals remains unclear. In our study, we tracked the growth of petals and found that the basal region of 'Jinba' petals showed a higher elongation rate, exhibiting rapid cell elongation during petal growth...
January 20, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28108964/heme-oxygenase-1-defects-lead-to-reduced-chlorophyll-in-brassica-napus
#7
Lixia Zhu, Zonghui Yang, Xinhua Zeng, Jie Gao, Jie Liu, Bin Yi, Chaozhi Ma, Jinxiong Shen, Jinxing Tu, Tingdong Fu, Jing Wen
We previously described a Brassica napus chlorophyll-deficient mutant (ygl) with yellow-green seedling leaves and mapped the related gene, BnaC.YGL, to a 0.35 cM region. However, the molecular mechanisms involved in this chlorophyll defect are still unknown. In this study, the BnaC07.HO1 gene (equivalent to BnaC.YGL) was isolated by the candidate gene approach, and its function was confirmed by genetic complementation. Comparative sequencing analysis suggested that BnaC07.HO1 was lost in the mutant, while a long noncoding-RNA was inserted into the promoter of the homologous gene BnaA07...
January 20, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28101816/retraction-note-to-brassica-rna-binding-protein-erd4-is-involved-in-conferring-salt-drought-tolerance-and-enhancing-plant-growth-in-arabidopsis
#8
Archana N Rai, Srinath Tamirisa, K V Rao, Vinay Kumar, P Suprasanna
No abstract text is available yet for this article.
January 18, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28084609/the-mobile-rnas-stbel11-and-stbel29-suppress-growth-of-tubers-in-potato
#9
Tejashree H Ghate, Pooja Sharma, Kirtikumar R Kondhare, David J Hannapel, Anjan K Banerjee
We demonstrate that RNAs of StBEL11 and StBEL29 are phloem-mobile and function antagonistically to the growth-promoting characteristics of StBEL5 in potato. Both these RNAs appear to inhibit tuber growth by repressing the activity of target genes of StBEL5 in potato. Moreover, upstream sequence driving GUS expression in transgenic potato lines demonstrated that both StBEL11 and -29 promoter activity is robust in leaf veins, petioles, stems, and vascular tissues and induced by short days in leaves and stolons...
January 13, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28074430/the-monomeric-gtpase-raba2-is-required-for-progression-and-maintenance-of-membrane-integrity-of-infection-threads-during-root-nodule-symbiosis
#10
Virginia Dalla Via, Soledad Traubenik, Claudio Rivero, O Mario Aguilar, María Eugenia Zanetti, Flavio Antonio Blanco
Progression of the infection canal that conducts rhizobia to the nodule primordium requires a functional Rab GTPase located in Golgi/trans-Golgi that also participate in root hair polar growth. Common bean (Phaseolus vulgaris) symbiotically associates with its partner Rhizobium etli, resulting in the formation of root nitrogen-fixing nodules. Compatible bacteria can reach cortical cells in a tightly regulated infection process, in which the specific recognition of signal molecules is a key step to select the symbiotic partner...
January 10, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28039561/functional-characterization-of-tomato-membrane-bound-nac-transcription-factors
#11
Payel Bhattacharjee, Rohit Das, Arunava Mandal, Pallob Kundu
Genome-wide analysis was carried out to identify and analyze differential expression pattern of tomato membrane bound NAC transcription factors (SlNACMTFs) during stresses. Two biotic-stress-related SlNACMTFs have been characterized to elucidate their regulatory function. NAC transcription factors are known regulators of stress-related gene expression. As Stresses are perceived and transmitted by membrane-bound proteins, functional characterization of membrane-associated NAC transcription factors in tomato can reveal valuable insight about membrane-mediated stress-signalling...
December 30, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/28032251/long-term-t-dna-insert-stability-and-transgene-expression-consistency-in-field-propagated-sugarcane
#12
Kerry Hosmer Caffall, Chengkun He, Michele Smith-Jones, Kristin Mayo, Pearl Mai, Shujie Dong, John Ke, Erik Dunder, Michele Yarnall, Rachel Whinna, Joe DeMaio, Weining Gu, Judith Sheldon, Martin Allen, Tricia Costello, Kristin Setliff, Rakesh Jain, Ada Snyder, Clark Lovelady, Eric Rawls, Eric Palmer, Yan Zhang, Nicholas Bate, Liang Shi, Ian Jepson
This study addresses T-DNA insert stability and transgene expression consistency in multiple cycles of field propagated sugarcane. T-DNA inserts are stable; no transgene rearrangements were observed. AmCYAN1 and PMI protein accumulation levels were maintained. There was no evidence that production of either protein declined across generations and no transgene silencing was observed in three commercial sugarcane varieties through commercially relevant ratooning, propagation-by-setts, and micro-propagation generation processes over 4 years of field testing...
December 28, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/28012053/transcriptomic-analysis-reveals-the-flooding-tolerant-mechanism-in-flooding-tolerant-line-and-abscisic-acid-treated-soybean
#13
Xiaojian Yin, Susumu Hiraga, Makita Hajika, Minoru Nishimura, Setsuko Komatsu
Soybean is highly sensitive to flooding stress and exhibits markedly reduced plant growth and grain yield under flooding conditions. To explore the mechanisms underlying initial flooding tolerance in soybean, RNA sequencing-based transcriptomic analysis was performed using a flooding-tolerant line and ABA-treated soybean. A total of 31 genes included 12 genes that exhibited similar temporal patterns were commonly changed in these plant groups in response to flooding and they were mainly involved in RNA regulation and protein metabolism...
December 23, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/28005227/in-planta-production-and-characterization-of-a-hyperthermostable-gh10-xylanase-in-transgenic-sugarcane
#14
Jae Yoon Kim, Guang Nong, John D Rice, Maria Gallo, James F Preston, Fredy Altpeter
Sugarcane (Saccharum sp. hybrids) is one of the most efficient and sustainable feedstocks for commercial production of fuel ethanol. Recent efforts focus on the integration of first and second generation bioethanol conversion technologies for sugarcane to increase biofuel yields. This integrated process will utilize both the cell wall bound sugars of the abundant lignocellulosic sugarcane residues in addition to the sucrose from stem internodes. Enzymatic hydrolysis of lignocellulosic biomass into its component sugars requires significant amounts of cell wall degrading enzymes...
December 22, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/28004240/silencing-of-an-%C3%AE-dioxygenase-gene-ca-dox-retards-growth-and-suppresses-basal-disease-resistance-responses-in-capsicum-annum
#15
Chi Eun Hong, Young-Im Ha, Hyoju Choi, Ju Yeon Moon, Jiyoung Lee, Ah-Young Shin, Chang Jin Park, Gyeong Mee Yoon, Suk-Yoon Kwon, Ick-Hyun Jo, Jeong Mee Park
Alpha-dioxygenases (α-DOX) catalyzing the primary oxygenation of fatty acids to oxylipins were recently found in plants. Here, the biological roles of the pepper α-DOX (Ca-DOX) gene, which is strongly induced during non-host pathogen infection in chili pepper, were examined. Virus-induced gene silencing demonstrated that down-regulation of Ca-DOX enhanced susceptibility to bacterial pathogens and suppressed the hypersensitive response via the suppression of pathogenesis-related genes such as PR4, proteinase inhibitor II and lipid transfer protein (PR14)...
December 21, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/28000033/the-protein-phosphatase-2c-clade-a-protein-ospp2c51-positively-regulates-seed-germination-by-directly-inactivating-osbzip10
#16
Nikita Bhatnagar, Myung-Ki Min, Eun-Hye Choi, Namhyo Kim, Seok-Jun Moon, Insun Yoon, Taekryoun Kwon, Ki-Hong Jung, Beom-Gi Kim
Protein phosphatase 2C clade A members are major signaling components in the ABA-dependent signaling cascade that regulates seed germination. To elucidate the role of PP2CA genes in germination of rice seed, we selected OsPP2C51, which shows highly specific expression in the embryo compared with other protein phosphatases based on microarray data. GUS histochemical assay confirmed that OsPP2C51 is expressed in the seed embryo and that this expression pattern is unique compared with those of other OsPP2CA genes...
December 20, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/27987127/formation-of-wood-secondary-cell-wall-may-involve-two-type-cellulose-synthase-complexes-in-populus
#17
Wang Xi, Dongliang Song, Jiayan Sun, Junhui Shen, Laigeng Li
Cellulose biosynthesis is mediated by cellulose synthases (CesAs), which constitute into rosette-like cellulose synthase complexe (CSC) on the plasma membrane. Two types of CSCs in Arabidopsis are believed to be involved in cellulose synthesis in the primary cell wall and secondary cell walls, respectively. In this work, we found that the two type CSCs participated cellulose biosynthesis in differentiating xylem cells undergoing secondary cell wall thickening in Populus. During the cell wall thickening process, expression of one type CSC genes increased while expression of the other type CSC genes decreased...
December 16, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/27981388/transcriptome-portrait-of-cellulose-enriched-flax-fibres-at-advanced-stage-of-specialization
#18
Oleg Gorshkov, Natalia Mokshina, Vladimir Gorshkov, Svetlana Chemikosova, Yuri Gogolev, Tatyana Gorshkova
Functional specialization of cells is among the most fundamental processes of higher organism ontogenesis. The major obstacle to studying this phenomenon in plants is the difficulty of isolating certain types of cells at defined stages of in planta development for in-depth analysis. A rare opportunity is given by the developed model system of flax (Linum usitatissimum L.) phloem fibres that can be purified from the surrounding tissues at the stage of the tertiary cell wall deposition. The performed comparison of the whole transcriptome profile in isolated fibres and other portions of the flax stem, together with fibre metabolism characterization, helped to elucidate the general picture of the advanced stage of plant cell specialization and to reveal novel participants potentially involved in fibre metabolism regulation and cell wall formation...
December 15, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/27975189/arabidopsis-anac069-binds-to-c-a-g-cg-t-g-sequences-to-negatively-regulate-salt-and-osmotic-stress-tolerance
#19
Lin He, Xinxin Shi, Yanmin Wang, Yong Guo, Kejun Yang, Yucheng Wang
ANAC069 binds to the DNA sequence of C[A/G]CG[T/G] to regulate the expression of genes, resulting in decreased ROS scavenging capability and proline biosynthesis, which contribute to increased sensitivity to salt and osmotic stress. NAM-ATAF1/2 and CUC2 (NAC) proteins are plant-specific transcription factors that play important roles in abiotic stress responses. In the present study, we characterized the physiological and regulatory roles of Arabidopsis thaliana ANAC069 in response to abiotic stresses. Arabidopsis plants overexpressing ANAC069 displayed increased sensitivity to abscisic acid, salt, and osmotic stress...
December 14, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/27942959/the-ppr-protein-slow-growth-4-is-involved-in-editing-of-nad4-and-affects-the-splicing-of-nad2-intron-1
#20
Stefan Weißenberger, Jürgen Soll, Chris Carrie
SLO4 is a mitochondrial PPR protein that is involved in editing nad4, possibly required for the efficient splicing of nad2 intron1. Pentatricopeptide repeat (PPR) proteins constitute a large protein family in flowering plants and are thought to be mostly involved in organellar RNA metabolism. The subgroup of PLS-type PPR proteins were found to be the main specificity factors of cytidine to uridine RNA editing. Identifying the targets of PLS-type PPR proteins can help in elucidating the molecular function of proteins encoded in the organellar genomes...
December 9, 2016: Plant Molecular Biology
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