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| 1 | Functional specialization of Nicotiana attenuata phytochromes in leaf development and flowering time显示文摘Phytochromes mainly function in photoautotrophic organisms to adjust growth in response to fluctuating light signals.The different isoforms of plant phytochromes often display both conserved and divergent roles,presumably to fine-tune plant responses to environmental signals and optimize fitness.Here we describe the distinct,yet partially redundant,roles of phytochromes NaPHYA,NaPHYB1 and NaPHYBi in a wild tobacco species,Nicotiana attenuata using RNAi-silenced phytochrome lines.Consistent with results reported from other species,silencing the expression of NaPHYA or NaPHYBi in N.attenuata had mild or no influence on plant development as long as NaPHYBi was functional;whereas silencing the expression of NaPHYBi alone strongly altered flowering time and leaf morphology.The contribution of NaPHYB2 became significant only in the absence of NaPHYB1;plants silenced for both NaPHYBi and NaPHYB2 largely skipped the rosettestage of growth to rapidly produce long,slender stalks that bore flowers early:hallmarks of the shadeavoidance responses.The phenotyping of phytochrome-silenced lines,combined with sequence and transcript accumulation analysis,suggest the independent functional diversification of the phytochromes,and a dominant role of NaPHYBi and NaPHYB2 in N.attenuata's vegetative and reproductive development. | Variluska Fragoso Youngjoo Oh Sang-Gyu Kim Klaus Gase Ian Thomas Baldwin | 2017 | Journal of Integrative Plant Biology2017，59，3： | 4 |
| 2 | DICER-like Proteins and Their Role in Plant-herbivore Interactions in Nicotiana attenuata显示文摘DICER-like (DCL) proteins produce small RNAs that silence genes involved in development and defenses against viruses and pathogens. Which DCLs participate in plant-herbivore interactions remains unstudied. We identified and stably silenced four distinct DCL genes by RNAi in Nicotiana attenuata (Torrey ex. Watson), a model for the study of plant-herbivore interactions. Silencing DCL1 expression was lethal. Manduca sexta larvae performed significantly better on ir-dcl3 and ir-dcl4 plants, but not on ir-dcl2 plants compared to wild type plants. Phytohormones, defense metabolites and microarray analyses revealed that when DCL3 and DCL4 were silenced separately, herbivore resistance traits were regulated in distinctly different ways. Crossing of the lines revealed complex interactions in the patterns of regulation. Single ir-dcl4 and double ir-dcl2 ir-dcl3 plants were impaired in JA accumulation, while JA- Ile was increased in ir-dcl3 plants. Ir-dcl3 and ir-dcl4 plants were impaired in nicotine accumulation; silencing DCL2 in combination with either DCL3 or DCL4 restored nicotine levels to those of WT. Trypsin proteinase inhibitor activity and transcripts were only silenced in ir-dcl3 plants. We conclude that DCL2/3/4 interact in a complex manner to regulate anti-herbivore defenses and that these interactions significantly complicate the already challenging task of understanding smRNA function in the regulation of biotic interactions. | Tohir Ahmadovich Bozorov Shree Prakash Pandey Son Truong Dinh Sang-Gyu Kim Maria Heinrich Klaus Gase Ian T. Baldwin | 2012 | Journal of Integrative Plant Biology2012，54，3： | 3 |
| 3 | A two-component signal-tranducing system is involved in competence and penicillin susceptibility in laboratory mutants of Streptococcus pneumoniae显示文摘 | GUENZI E GASE A M SICARD M A | 1994 | Mol Microbiol1994，12，3： | 1 |
| 4 | Core antenna complexes, CP43 and CP47, of high plant photosystem Ⅱ spectral properties, pigment stoichiometry, and amino acid composition显示文摘 | ALFONSO M MONTOYA G GASES R | 1994 | Biochemistry1994，33，10： | 1 |
| 5 | Functional siguificance of NH2-and COOH-terminal regions of staphylokinase in plasminogen activation显示文摘 | Gase A Hartmann M Guhrs KH | | 0，，05： | 1 |
| 6 | Two-fold differences are the detection Iimit for determining transgene copy number in plants by real-time PCR显示文摘 | BUBNER B GASE K BALDWIN IT | 2004 | BMC Biotechnol2004，4，： | 1 |
| 7 | Core antenna complexes, CP43 and CP47, of high plant photosystem Ⅱ spectral properties, pigment stoichiometry, and amino acid composition显示文摘 | ALFONSO M MONTOYA G GASES R | 1994 | Biochemistry1994，33，10： | 1 |
| 8 | Catheter ablation treatment of supraventricular tachycardia-induced cardiomyopathy显示文摘 | Lashus AG Gase CL Gillette PC | 1997 | Arch Pediatr Adolesc Med1997，151，3： | 1 |
| 9 | Identification, cloning,and expression of the CAMP factor gene (cfa) of group A streptococci 显示文摘 | Gase K Ferretti J J Primeaux C | 1999 | Infection and Immunity1999，67，9： | 1 |
| 10 | The multimode laser radiation as a Gaussian-Schell model beam 显示文摘 | GASE R | 1991 | J Mod Opt1991，38，6： | 1 |
| 11 | Silencing geranylgeranyl diphosphate synthase in Nicotiana attenuata dramatically impairs resistance to tobacco homworm 显示文摘 | Jassbi A R Gase K Hettenhausen C | 2008 | Plant Physiol2008，146，： | 1 |
| 12 | Herbivory-inducedchanges in the small-RNA transcriptome and phytohormone signaling inNicotiana attenuate显示文摘 | Shree P Pandey Priyanka Shahi Klaus Gase | 2008 | PNAS2008，105，12： | 1 |
| 13 | The multimode laser radiation as a Gaussian Schell model beam显示文摘 | Gase R | 1991 | J Mod Opt1991，38，6： | 1 |
| 14 | Prevalence and correlates of prenatal vitamin A deficiency in rural Sidama,Southern Ethiopia显示文摘 | Gebreselassie SG Gase FE Deressa MU | 2013 | J Health Popul Nutr2013，31，2： | 1 |
| 15 | Influence of soil properties on the aggregation of some Mediterraneansoils and the use of aggregate size and stability as land degradationindicators 显示文摘 | BOIX - FAYOS G CALYO - GASES A IMESON A C | 2001 | Catena2001，44，1： | 1 |
| 16 | The Multimode Laser Radiation as a Gaussian Schell Model Beam 显示文摘 | GASE R | 1991 | J Mod Opt1991，38，： | 1 |
| 17 | Influencing intramolecular motion with an alternating electric field 显示文摘 | BERMUDEZ V CAPRON N GASE T | 2000 | Nature2000，1406，6796： | 1 |
| 18 | Expression and regulation of the streptokinase gene显示文摘 | HORST MALKE KERSTIN STEINER KLAUS GASE | | 0，，： | 1 |
| 19 | Enhanced fluorescence imaging in chlorophyll-suppressed tobacco tissues using virus-induced gene silencing of the phytoene desaturase gene 显示文摘 | Zhang L Gase K Baldwin I | 2010 | Bio Techniques2010，48，2： | 1 |
| 20 | Reuse of waste materials as growing media for ornamental plants显示文摘 | Hemández L GaseóA M GascóJ M | 2005 | Bioresource Technology2005，96，1： | 1 |
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