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[PMID]: 29475400
[Au] Autor:Nomura T; Kuchida R; Kitaoka N; Kato Y
[Ad] Address:a Biotechnology Research Center and Department of Biotechnology , Toyama Prefectural University , Imizu , Japan.
[Ti] Title:Molecular diversity of tuliposide B-converting enzyme in tulip (Tulipa gesneriana): identification of the third isozyme with a distinct expression profile.
[So] Source:Biosci Biotechnol Biochem;:1-11, 2018 Feb 23.
[Is] ISSN:1347-6947
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:6-Tuliposide B (PosB), a major secondary metabolite that accumulates in tulip (Tulipa gesneriana), is converted to the antibacterial lactone, tulipalin B (PaB), by PosB-converting enzyme (TCEB). TgTCEB1 and TgTCEB-R, which encode TCEB, are specifically expressed in tulip pollen and roots, respectively, but are hardly expressed in other tissues (e.g. leaves) despite the presence of substantial PosB-converting activity, suggesting the existence of another TCEB isozyme. Here, we describe the identification of TgTCEB-L ("L" for leaf), a paralog of TgTCEB1 and TgTCEB-R, from leaves via native enzyme purification. The enzymatic characters of TgTCEB-L, including catalytic activity and subcellular localization, were substantially the same as those of TgTCEB1 and TgTCEB-R. However, TgTCEB-L did not exhibit tissue-specific expression. Identification of TgTCEB-L explains the PosB-converting activity detected in tissues where TgTCEB1 and TgTCEB-R transcripts could not be detected, indicating that tulip subtilizes the three TgTCEB isozymes depending on the tissue.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1802
[Cu] Class update date: 180224
[Lr] Last revision date:180224
[St] Status:Publisher
[do] DOI:10.1080/09168451.2018.1438170

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[PMID]: 29369583
[Au] Autor:Kashin AS; Kritskaya TA; Schanzer IA
[Ti] Title:[Genetic polymorphism of Tulipa gesneriana L. evaluated on the basis of the ISSR marking data].
[So] Source:Genetika;52(10):1134-45, 2016 Oct.
[Is] ISSN:0016-6758
[Cp] Country of publication:Russia (Federation)
[La] Language:rus
[Ab] Abstract:Using the method of ISSR analysis, the genetic diversity of 18 natural populations of Tulipa gesneriana L. from the north of the Lower Volga region was examined. The ten ISSR primers used in the study provided identification of 102 PCR fragments, of which 50 were polymorphic (49.0%). According to the proportion of polymorphic markers, two population groups were distinguished: (1) the populations in which the proportion of polymorphic markers ranged from 0.35 to 0.41; (2) the populations in which the proportion of polymorphic markers ranged from 0.64 to 0.85. UPGMA clustering analysis provided subdivision of the sample into two large clusters. The unrooted tree constructed using the Neighbor Joining algorithm had similar topology. The first cluster included slightly variable populations and the second cluster included highly variable populations. The AMOVA analysis showed statistically significant differences (F CT = 0.430; p = 0.000) between the two groups. Local populations are considerably genetically differentiated from each other (F ST = 0.632) and have almost no links via modern gene flow, as evidenced by the results of the Mantel test (r =­0.118; p = 0.819). It is suggested that the degree of genetic similarities and differences between the populations depends on the time and the species dispersal patterns on these territories.
[Mh] MeSH terms primary: Polymorphism, Genetic
Tulipa/genetics
[Mh] MeSH terms secundary: Genetic Markers
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (Genetic Markers)
[Em] Entry month:1802
[Cu] Class update date: 180205
[Lr] Last revision date:180205
[Js] Journal subset:IM
[Da] Date of entry for processing:180126
[St] Status:MEDLINE

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[PMID]: 29324847
[Au] Autor:Wu Y; Ma W; Liu J; Zhu L; Cong L; Zhai J; Wang Y; Zhang Z
[Ad] Address:College of Nature Conservation, Beijing Forestry University, Beijing, China.
[Ti] Title:Sabina chinensis and Liriodendron chinense improve air quality in Beijing, China.
[So] Source:PLoS One;13(1):e0189640, 2018.
[Is] ISSN:1932-6203
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Urban forests have been shown to be efficient for reducing air pollutants especially for particulate matters (PMs). This study aims to reveal the PM blocking capacity of two common artificial landscape species, Sabina chinensis and Liriodendron chinense and to investigate spatial-temporal heterogeneities by estimating the vegetation collection velocity of coarse (PM10) and fine particles (PM2.5) during different seasons and heights. PM concentration and meteorological data were collected on both leeward and windward sides of trees during the daytime in both summers and winters from 2013 to 2015. Concentration and meteorological monitors were installed at three heights, bottom (1.5 m), middle (3.5 m), and top (5.5 m) of the canopy. The results showed: During daytime, the collection velocity changed and PM2.5 collection velocity was much higher than that of PM10. Furthermore, the maximum collection velocities of L. chinense and S. chinensis occurred at 14:00-16:00 both in summer and winter. Moreover, the collection velocity had a positive correlation with wind speed and temperature. The blocking capacities of L. chinense and S. chinensis varied from season to season, and the concentrations of particulate matter indicate the middle canopy of both species as the most effective part for TSP blocking. Furthermore, these two species are more effective blocking in PM2.5 than PM10. The blocking capacity of S. chinensis is generally better. The vegetation collection is the major process of PM removal near the ground and sedimentation was not taken into consideration near the ground.
[Mh] MeSH terms primary: Air Pollution
Forests
Liriodendron/metabolism
[Mh] MeSH terms secundary: Beijing
Models, Theoretical
Particulate Matter/analysis
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:0 (Particulate Matter)
[Em] Entry month:1801
[Cu] Class update date: 180129
[Lr] Last revision date:180129
[Js] Journal subset:IM
[Da] Date of entry for processing:180112
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189640

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[PMID]: 29218597
[Au] Autor:Moreno-Pachon NM; Mutimawurugo MC; Heynen E; Sergeeva L; Benders A; Blilou I; Hilhorst HWM; Immink RGH
[Ad] Address:Physiology of Flower Bulbs, Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, The Netherlands.
[Ti] Title:Role of Tulipa gesneriana TEOSINTE BRANCHED1 (TgTB1) in the control of axillary bud outgrowth in bulbs.
[So] Source:Plant Reprod;, 2017 Dec 07.
[Is] ISSN:2194-7961
[Cp] Country of publication:Germany
[La] Language:eng
[Ab] Abstract:KEY MESSAGE: Tulip vegetative reproduction. Tulips reproduce asexually by the outgrowth of their axillary meristems located in the axil of each bulb scale. The number of axillary meristems in one bulb is low, and not all of them grow out during the yearly growth cycle of the bulb. Since the degree of axillary bud outgrowth in tulip determines the success of their vegetative propagation, this study aimed at understanding the mechanism controlling the differential axillary bud activity. We used a combined physiological and "bottom-up" molecular approach to shed light on this process and found that first two inner located buds do not seem to experience dormancy during the growth cycle, while mid-located buds enter dormancy by the end of the growing season. Dormancy was assessed by weight increase and TgTB1 expression levels, a conserved TCP transcription factor and well-known master integrator of environmental and endogenous signals influencing axillary meristem outgrowth in plants. We showed that TgTB1 expression in tulip bulbs can be modulated by sucrose, cytokinin and strigolactone, just as it has been reported for other species. However, the limited growth of mid-located buds, even when their TgTB1 expression is downregulated, points at other factors, probably physical, inhibiting their growth. We conclude that the time of axillary bud initiation determines the degree of dormancy and the sink strength of the bud. Thus, development, apical dominance, sink strength, hormonal cross-talk, expression of TgTB1 and other possibly physical but unidentified players, all converge to determine the growth capacity of tulip axillary buds.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1712
[Cu] Class update date: 171208
[Lr] Last revision date:171208
[St] Status:Publisher
[do] DOI:10.1007/s00497-017-0316-z

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[PMID]: 29088399
[Au] Autor:Leeggangers HACF; Rosilio-Brami T; Bigas-Nadal J; Rubin N; van Dijk ADJ; Nunez de Caceres Gonzalez FF; Saadon-Shitrit S; Nijveen H; Hilhorst HWM; Immink RGH; Zaccai M
[Ad] Address:Wageningen Seed Lab (WSL), Laboratory of Plant Physiology, Wageningen University & Research, Wageningen, The Netherlands.
[Ti] Title:Tulipa gesneriana and Lilium longiflorum PEBP Genes and Their Putative Roles in Flowering Time Control.
[So] Source:Plant Cell Physiol;, 2017 Oct 27.
[Is] ISSN:1471-9053
[Cp] Country of publication:Japan
[La] Language:eng
[Ab] Abstract:Floral induction in Tulipa gesneriana and Lilium longiflorum is triggered by contrasting temperature conditions, high and low temperature respectively. In Arabidopsis, the floral integrator FLOWERING LOCUS T (FT), member of the PEBP gene family, is a key player in flowering time control. In this study, one PEBP gene was identified and characterized in lily (LlFT) and three PEBP genes were isolated from tulip (TgFT1, TgFT2 and TgFT3). Over-expression of these genes in Arabidopsis thaliana resulted in an early flowering phenotype for LlFT and TgFT2, but a late flowering phenotype for TgFT1 and TgFT3. Over-expression of LlFT in L. longiflorum also resulted in an early flowering phenotype, confirming its proposed role as a flowering time controlling gene. The tulip PEBP genes TgFT2 and TgFT3 have a similar expression pattern in tulip, but show opposite effects on the timing of flowering in Arabidopsis. Therefore, the difference between these two proteins was further investigated by interchanging amino acids supposed to be important for the FT function. This resulted in the conversion of phenotypes in Arabidopsis upon overexpressing the substituted TgFT2 and TgFT3 genes, revealing the importance of these interchanged amino acid residues. Based on all obtained results we hypothesize that LlFT is involved in creating meristem competence to flowering related cues in lily and TgFT2 is considered to act as a florigen involved in the floral induction in tulip. The function of TgFT3 remains unclear, but based on our observations and phylogenetic analysis we propose a bulb specific function for this gene.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1711
[Cu] Class update date: 171031
[Lr] Last revision date:171031
[St] Status:Publisher
[do] DOI:10.1093/pcp/pcx164

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[PMID]: 28940507
[Au] Autor:Hassan I; Rasool F; Akhtar S; Kamili A; Rather P; Kanth R; Bhat Y; Rather S; Mubashir S; Yaseen A; Bashir S
[Ad] Address:Department of Dermatology, Sexually Transmitted Diseases & Leprosy, Government Medical College and Associated Hospitals, 190010, Srinagar, India.
[Ti] Title:Contact dermatitis caused by tulips: identification of contact sensitizers in tulip workers of Kashmir Valley in North India.
[So] Source:Contact Dermatitis;, 2017 Sep 21.
[Is] ISSN:1600-0536
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:BACKGROUND: Tulip, belonging to the genus Tulipa and family Liliaceae, is a spring-blooming perennial that grows from bulbs. Owing to manual handling, contact dermatitis can occur in professionals at any stage of the growth cycle of the tulip plant. OBJECTIVES: To determine the clinical pattern of contact dermatitis resulting from tulip plant cultivation, and to assess contact allergy in workers coming into contact with this plant. METHODS: One hundred and sixty-four tulip workers were screened, and 48 patients with suspected contact dermatitis were patch tested with 39 allergens, including haptens from the Indian baseline series, a plant series, and extracts from different parts of the tulip plant. RESULTS: Thirty-nine positive patch test reactions were observed in 21 patients. Seventeen patients showed positive reactions to either α-methylene-γ-butyrolactone or to tulip plant extract. Clinical relevance was observed for 13 of 17 positive patch test reactions. CONCLUSIONS: Contact dermatitis is an important health hazard in workers dealing with tulip bulbs. Further studies to identify and isolate other possible tulip allergens, and to quantify the amounts of allergens in different parts of the tulip plant, are recommended.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1709
[Cu] Class update date: 170923
[Lr] Last revision date:170923
[St] Status:Publisher
[do] DOI:10.1111/cod.12870

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[PMID]: 28759847
[Au] Autor:Recchia I; Sparla F; Pupillo P
[Ad] Address:Department of Pharmacy and Biotechnology FaBiT, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy. Electronic address: irene.recchia@studio.unibo.it.
[Ti] Title:Photosynthetic properties of spring geophytes assessed by chlorophyll fluorescence analysis.
[So] Source:Plant Physiol Biochem;118:510-518, 2017 Sep.
[Is] ISSN:1873-2690
[Cp] Country of publication:France
[La] Language:eng
[Ab] Abstract:Since spring ephemerals are credited to be all "sun" species with unusually elevate photosynthesis, in contrast to shade-tolerant trees and understory geophytes with a long aboveground cycle, we examined the photosynthetic efficiency of 6 woody species, 9 long-cycle geophytes, and 8 spring ephemeral geophytes using blue flashes of increasing energy with the Imaging PAM fluorometer. Several parameters were obtained: quantum yield of electron transport (ΦETR) or of PSII (ΦPSII), maximum measured photosynthesis rate (ETR ), maximum extrapolated rate of photosynthesis (ETR ), half-saturating photon flux density (K ), and in some cases photochemical (qP) and non-photochemical quenching (NPQ). Results confirm the ecological consistency of the three plant groups, with internal differences. Woody species have low ETR and K values with good ΦETR; long-cycle herbs have low ETR and ΦETR and moderate K values; spring ephemerals have elevate ΦETR, ETR and K values. The mean ETR of ephemerals of 91 µmol m s exceeds that of long-cycle herbs 2.9-fold and woody species 4.8-fold, and corresponds to 19 µmol CO m s by assuming an ETR/ΦCO ratio of 4.7. Highest photosynthesis rates and K were exhibited by five ephemerals (Eranthis, Erythronium, Narcissus, Scilla, Tulipa) with peak ETR values equivalent to ∼40 µmol CO m s or ∼60 µmol CO (g Chl) s ("sun" species). According to a new, fluorescence based heliophily index, all trees and five long-cycle herbs were definitely "shade" species, while four long-cycle herbs and three ephemerals were intermediate shade-tolerant.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170830
[Lr] Last revision date:170830
[St] Status:In-Process

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[PMID]: 28550774
[Au] Autor:Choi WI; Ryu HJ; Kim SJ; Oh KK
[Ad] Address:R&D Center, SugarEn Co., Ltd., Yongin, Gyeonggi 16890, Republic of Korea.
[Ti] Title:Thermo-mechanical fractionation of yellow poplar sawdust with a low reaction severity using continuous twin screw-driven reactor for high hemicellulosic sugar recovery.
[So] Source:Bioresour Technol;241:63-69, 2017 Oct.
[Is] ISSN:1873-2976
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Yellow poplar sawdust (YPS), a wood waste that can be easily collected from a local furniture factory, was fractionated using continuous twin screw-driven reactor for high hemicellulosic sugar recovery. The highest total sugar yields were attained under the following conditions: a barrel temperature of 127°C, sulfuric acid concentration of 0.8wt%, liquid feeding rate of 25mL/min, solid feeding rate of 2.0g/min, screw rotation speed of 25rpm, and residence time of 14.5min. The glucan and hemicellulose contents of the CTSR-fractionated YPS were 47.8% and 10.4%, respectively, and these results indicated that 44.9% of cellulose and 76.3% of the hemicellulose were extracted into liquid hydrolyzate. Meanwhile, the batch fractionation of YPS at the same reaction conditions showed a little fractionation effect, i.e., only 20.5% of hemicellulosic sugar yield was obtained.
[Mh] MeSH terms primary: Bioreactors
Liriodendron
[Mh] MeSH terms secundary: Carbohydrates
Hydrolysis
Sucrose
Wood
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (Carbohydrates); 57-50-1 (Sucrose)
[Em] Entry month:1711
[Cu] Class update date: 171106
[Lr] Last revision date:171106
[Js] Journal subset:IM
[Da] Date of entry for processing:170528
[St] Status:MEDLINE

  9 / 266 MEDLINE  
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[PMID]: 28485211
[Au] Autor:Nomura T; Ueno A; Ogita S; Kato Y
[Ad] Address:a Biotechnology Research Center and Department of Biotechnology , Toyama Prefectural University , Imizu, Toyama , Japan.
[Ti] Title:Molecular diversity of tuliposide B-converting enzyme in tulip (Tulipa gesneriana): identification of the root-specific isozyme.
[So] Source:Biosci Biotechnol Biochem;81(6):1185-1193, 2017 Jun.
[Is] ISSN:1347-6947
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:6-Tuliposide B (PosB) is a glucose ester accumulated in tulip (Tulipa gesneriana) as a major secondary metabolite. PosB serves as the precursor of the antimicrobial lactone tulipalin B (PaB), which is formed by PosB-converting enzyme (TCEB). The gene TgTCEB1, encoding a TCEB, is transcribed in tulip pollen but scarcely transcribed in other tissues (e.g. roots) even though those tissues show high TCEB activity. This led to the prediction of the presence of a TCEB isozyme with distinct tissue specificity. Herein, we describe the identification of the TgTCEB-R gene from roots via native enzyme purification; this gene is a paralog of TgTCEB1. Recombinant enzyme characterization verified that TgTCEB-R encodes a TCEB. Moreover, TgTCEB-R was localized in tulip plastids, as found for pollen TgTCEB1. TgTCEB-R is transcribed almost exclusively in roots, indicating a tissue preference for the transcription of TCEB isozyme genes.
[Mh] MeSH terms primary: Carboxylic Ester Hydrolases/genetics
Gene Expression Regulation, Plant
Glucosides/metabolism
Hydroxybutyrates/metabolism
Plant Proteins/genetics
Plant Roots/enzymology
Tulipa/enzymology
[Mh] MeSH terms secundary: 4-Butyrolactone/analogs & derivatives
4-Butyrolactone/metabolism
Amino Acid Sequence
Anti-Infective Agents/metabolism
Biotransformation
Carboxylic Ester Hydrolases/metabolism
Cloning, Molecular
Escherichia coli/genetics
Escherichia coli/metabolism
Gene Expression
Isoenzymes/genetics
Isoenzymes/metabolism
Kinetics
Organ Specificity
Plant Proteins/metabolism
Plant Roots/genetics
Pollen/enzymology
Pollen/genetics
Recombinant Proteins/genetics
Recombinant Proteins/metabolism
Secondary Metabolism/genetics
Substrate Specificity
Transcription, Genetic
Tulipa/genetics
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (6-tuliposide B); 0 (Anti-Infective Agents); 0 (Glucosides); 0 (Hydroxybutyrates); 0 (Isoenzymes); 0 (Plant Proteins); 0 (Recombinant Proteins); 15VWD3K2A9 (tulipalin B); EC 3.1.1.- (Carboxylic Ester Hydrolases); OL659KIY4X (4-Butyrolactone)
[Em] Entry month:1707
[Cu] Class update date: 170703
[Lr] Last revision date:170703
[Js] Journal subset:IM
[Da] Date of entry for processing:170510
[St] Status:MEDLINE
[do] DOI:10.1080/09168451.2017.1295806

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[PMID]: 28421090
[Au] Autor:Li P; Lu RS; Xu WQ; Ohi-Toma T; Cai MQ; Qiu YX; Cameron KM; Fu CX
[Ad] Address:Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education, and Laboratory of Systematic & Evolutionary Botany and Biodiversity, College of Life Sciences, Zhejiang UniversityHangzhou, China.
[Ti] Title:Comparative Genomics and Phylogenomics of East Asian Tulips ( , Liliaceae).
[So] Source:Front Plant Sci;8:451, 2017.
[Is] ISSN:1664-462X
[Cp] Country of publication:Switzerland
[La] Language:eng
[Ab] Abstract:The genus Honda (Liliaceae), when it is treated as separate from , comprises six perennial herbaceous species that are restricted to China, Japan and the Korean Peninsula. Although all six species have important medicinal and horticultural uses, studies focused on species identification and molecular phylogenetics are few. Here we report the nucleotide sequences of six complete chloroplast (cp) genomes. The cp genomes of range from 150,613 bp to 151,136 bp in length, all including a pair of inverted repeats (25,629-25,859 bp) separated by the large single-copy (81,482-82,218 bp) and small single-copy (17,366-17,465 bp) regions. Each cp genome equivalently contains 112 unique genes consisting of 30 transfer RNA genes, four ribosomal RNA genes, and 78 protein coding genes. Gene content, gene order, AT content, and IR/SC boundary structure are nearly identical among all cp genomes. However, the relative contraction and expansion of the IR/SC borders among the six cp genomes results in length variation among them. Simple sequence repeat (SSR) analyses of these cp genomes indicate that the richest SSRs are A/T mononucleotides. The number of repeats among the six species varies from 54 ( ) to 69 ( ) with palindromic (28-35) and forward repeats (23-30) as the most common types. Phylogenomic analyses based on these complete cp genomes and 74 common protein-coding genes strongly support the monophyly of the genus, and a sister relationship between and , rather than a shared common ancestor with . Nine DNA markers ( , and ) with number of variable sites greater than 0.9% were identified, and these may be useful for future population genetic and phylogeographic studies of species.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1704
[Cu] Class update date: 170816
[Lr] Last revision date:170816
[St] Status:PubMed-not-MEDLINE
[do] DOI:10.3389/fpls.2017.00451


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