abstract：:The size of plant cells is determined by genetic, structural and physical factors as well as by internal and external signals. Our knowledge of the molecular mechanisms of these controls is still rudimentary. Recent studies indicate that ploidy level exerts an important control on cell size. By increasing ploidy, endo...

journal_title：Current opinion in plant biology

authors： Kondorosi E,Roudier F,Gendreau E

更新日期：2000-12-01 00:00:00

abstract：:Developmental pathways are often simplified as linear cascades of gene activation caused by initial signaling events. Recent data, however, support a more complex view in which non-linear responses to signals are important for pattern formation. First, a positive feedback loop may regulate cellular patterning in the A...

journal_title：Current opinion in plant biology

authors： Scheres B

更新日期：2000-10-01 00:00:00

abstract：:Avirulence genes are originally defined by their negative impact on the ability of a pathogen to infect their host plant. Many avirulence genes are now known to represent a subset of virulence factors involved in the mediation of the host-pathogen interaction. Characterization of avirulence genes has revealed that the...

journal_title：Current opinion in plant biology

authors： White FF,Yang B,Johnson LB

更新日期：2000-08-01 00:00:00

abstract：:Recent research indicates that several sulfate transporters - exhibiting different tissue specificities and modes of expression - may play distinct roles in sulfate uptake within specific tissues and in long-distance sulfate translocation. The transcription levels of particular genes and feedback inhibition of serine ...

journal_title：Current opinion in plant biology

authors： Saito K

更新日期：2000-06-01 00:00:00

abstract：:Plant biotechnology has recently become the focus of heated controversy and media attention, particularly in the UK. The most obvious concerns have centred upon the possible effects of the technology on the environment and on human health, but a broader and more fundamental set of considerations has also been evident ...

journal_title：Current opinion in plant biology

authors： Straughan R

更新日期：2000-04-01 00:00:00

abstract：:Significant advances in the genetic dissection of brassinosteroid biosynthesis and signaling have been made during the past few years. Genetic and biochemical data have helped to elucidate the pathways of biosynthesis of brassinolide, the most active brassinosteroid. In addition, several models have been put forward f...

journal_title：Current opinion in plant biology

authors： Schumacher K,Chory J

更新日期：2000-02-01 00:00:00

abstract：:Cysteine and serine proteases are prominent players in the control of developmental and pathogen-activated cell deaths in plants. Ethylene, salicylic acid, the small G-protein Rac, calcium and reactive oxygen species are recurring mediators of death signaling. Lastly, the mitochondrion has emerged in both plant and an...

journal_title：Current opinion in plant biology

authors： Lam E,Pontier D,del Pozo O

更新日期：1999-12-01 00:00:00

abstract：:The pollen grain and the pollen tube that grows from it are complex entities which must respond to a diverse array of signals to carry out their roles in sexual reproduction. Research is beginning to reveal the nature both of the signals and of the signal transduction machinery that converts these signals into directi...

journal_title：Current opinion in plant biology

authors： Pruitt RE

更新日期：1999-10-01 00:00:00

abstract：:Recent studies indicate that, in a manner similar to classical plant hormones, sugars can act as signaling molecules that control gene expression and developmental processes in plants. Crucial evidence includes uncoupling glucose signaling from its metabolism, identification of glucose sensors, and isolation and chara...

journal_title：Current opinion in plant biology

authors： Sheen J,Zhou L,Jang JC

更新日期：1999-10-01 00:00:00

abstract：:The combination of mutational and molecular studies has shed light on the role of reactive oxygen intermediates and programmed cell death in cereal disease resistance mechanisms. Rice Rac1 and barley Rar1 represent conserved disease resistance signalling genes, which may have related functions in animals. The analysis...

journal_title：Current opinion in plant biology

authors： Piffanelli P,Devoto A,Schulze-Lefert P

更新日期：1999-08-01 00:00:00

abstract：:Zinc is an essential micronutrient. Genes responsible for zinc uptake have now been identified from yeast and plants. These genes belong to an extended family of cation transporters called the ZIP gene family. Zinc efflux genes that belong to another transporter family, the CDF family, have also been identified in yea...

journal_title：Current opinion in plant biology

authors： Guerinot ML,Eide D

更新日期：1999-06-01 00:00:00

abstract：:Embryogenesis is a critical stage of the sporophytic life cycle during which the basic body plan of the plant is established. Although positional information is implicated to play a major role in determining embryo cell fate, little is known about the nature of positional signals. Recent studies show that the monopter...

journal_title：Current opinion in plant biology

authors： Harada JJ

更新日期：1999-02-01 00:00:00

abstract：:The activity of cyclin-dependent kinases (CDKs) on specific targets mediates the temporal regulation of plant cell cycle transitions. The sequential activity of CDKs and the spatial regulation of cell proliferation during plant development, however, are still poorly understood. Understanding these aspects depends on t...

journal_title：Current opinion in plant biology

authors： Gutierrez C

更新日期：1998-12-01 00:00:00

abstract：:Although cytokinin plays a central role in plant development, our knowledge of the biosynthesis, distribution, perception and signal transduction of cytokinin is limited. Recent molecular-genetic studies have, however, implicated involvement of a two-component system in cytokinin signal transduction. Furthermore, new ...

journal_title：Current opinion in plant biology

authors： Kakimoto T

更新日期：1998-10-01 00:00:00

abstract：:Successful penetration of living plant tissue by fungal pathogens is preceded by an exchange of signals between both organisms. Recent mutational approaches revealed the importance of cAMP-dependent signalling pathways for fungal development and virulence on their hosts. ...

journal_title：Current opinion in plant biology

authors： Knogge W

更新日期：1998-08-01 00:00:00

abstract：:Recent progress in the genetic dissection of plant disease resistance signaling pathways has opened a number of new avenues towards engineering pathogen resistance in crops. Genes controlling race-specific and broad-spectrum resistance responses have been cloned, and novel induced resistance pathways have been identif...

journal_title：Current opinion in plant biology

authors： Salmeron JM,Vernooij B

更新日期：1998-08-01 00:00:00

abstract：:In the past year progress has been made in the manipulation of phenylpropanoid metabolism but several studies highlight gaps in our understanding of the biochemistry of these pathways. New components involved in transcriptional regulation of phenylpropanoid genes have been identified, including transcription factors a...

journal_title：Current opinion in plant biology

authors： Weisshaar B,Jenkins GI

更新日期：1998-06-01 00:00:00

abstract：:The repertoire of cis-regulatory elements has increased to a level of sophistication that offers considerable spatial and temporal control over transgene expression. Recent advances made with transgenes have revealed that the control of their expression is also influenced by factors that range from transgene copy numb...

journal_title：Current opinion in plant biology

authors： Gallie DR

更新日期：1998-04-01 00:00:00

abstract：:Recent studies on the differential expression of genes associated with leaf senescence support the long-standing interpretation of plant senescence as an organized, genetically controlled process. Sequence identities of genes that are differentially expressed in senescing leaves indicate roles in the salvage of nutrie...

journal_title：Current opinion in plant biology

authors： Bleecker AB

更新日期：1998-02-01 00:00:00