http://www.newphytologist.com EarlyView RSS Feed http://www.newphytologist.com/details/journalArticle/765221/Corrigendum.html 2010-07-30T00:00:00Z http://www.newphytologist.com/details/journalArticle/765225/Transcriptome_profiles_of_hybrid_poplar_Populus_trichocarpanbspx00D7nbspdeltoide.html Poplar has been established as a model tree system for genomic research of the response to biotic stresses. This study describes a series of induced transcriptome changes and the associated physiological characterization of local and systemic responses in hybrid poplar (Populus trichocarpa × deltoides) after simulated herbivory. Responses were measured in local source (LSo), systemic source (SSo), and systemic sink (SSi) leaves following application of forest tent caterpillar (Malacosoma... 2010-07-29T00:00:00Z http://www.newphytologist.com/details/journalArticle/765223/Diurnal_oscillations_of_metabolite_abundances_and_gene_analysis_provide_new_insi.html Knowledge about primary metabolic processes is essential for the understanding of the physiology and ecology of seaweeds. The Ectocarpus siliculosus genome now facilitates integrative studies of the molecular basis of primary metabolism in this brown alga. Metabolite profiling was performed across two light–dark cycles and under different CO2 and O2 concentrations, together with genome and targeted gene expression analysis. Except for mannitol, E. siliculosus cells contain low levels of... 2010-07-29T00:00:00Z http://www.newphytologist.com/details/journalArticle/765241/Multilocus_analysis_of_genetic_divergence_between_outcrossing_Arabidopsis_specie.html Outcrossing Arabidopsis species that diverged from their inbreeding relative Arabidopsis thaliana 5 million yr ago and display a biogeographical pattern of interspecific sympatry vs intraspecific allopatry provides an ideal model for studying impacts of gene introgression and polyploidization on species diversification. Flow cytometry analyses detected ploidy polymorphisms of 2× and 4× in Arabidopsis lyrata ssp. kamchatica of Taiwan. Genomic divergence between species/subspecies was... 2010-07-28T00:00:00Z http://www.newphytologist.com/details/journalArticle/765239/Molecular_traits_controlling_host_range_and_adaptation_to_plants_in_Ralstonia_so.html Ralstonia solanacearum is regarded as one of the world's most important bacterial plant pathogens because of its aggressiveness, large host range, broad geographical distribution and long persistence in soil and water environments. This root pathogen is an attractive model to investigate the question of host adaptation as it exhibits a remarkably broad host range, being able to infect numerous plant species belonging to different botanical families. Several effector proteins transiting through... 2010-07-28T00:00:00Z http://www.newphytologist.com/details/journalArticle/765237/Ectomycorrhizal_fungi_and_interspecific_competition_species_interactions_communi.html Summary1I.Introduction2II.Definitions and terminology3III.Patterns of EMF competition3IV.How do EMF competitors coexist?8V.Unanswered questions and future directions10VI.New methods and approaches11VII.Conclusions13Acknowledgements13References13 The field of ectomycorrhizal fungal (EMF) ecology has largely developed outside the ecological mainstream, owing in large part to the challenges in studying the structure and dynamics of EMF communities. With advances in molecular identification and... 2010-07-28T00:00:00Z http://www.newphytologist.com/details/journalArticle/765235/Environmental_change_without_climate_change.html 2010-07-28T00:00:00Z http://www.newphytologist.com/details/journalArticle/765233/Is_tree_root_respiration_more_sensitive_than_heterotrophic_respiration_to_change.html 2010-07-28T00:00:00Z http://www.newphytologist.com/details/journalArticle/765231/The_use_of_FLPmediated_recombination_for_the_functional_analysis_of_an_effector_.html In the Ustilago maydis genome, several novel secreted effector proteins are encoded by gene families. Because of the limited number of selectable markers, the ability to carry out sequential gene deletions has limited the analysis of effector gene families that may have redundant functions. Here, we established an inducible FLP-mediated recombination system in U. maydis that allows repeated rounds of gene deletion using a single selectable marker (HygR). To avoid genome rearrangements via... 2010-07-28T00:00:00Z http://www.newphytologist.com/details/journalArticle/765229/Seed_dispersal_effectiveness_revisited_a_conceptual_review.html Summary1I.Introduction2II.Caveats3III.What is an effective disperser?3IV.The SDE landscape and its quantitative and qualitative axes4V.How are disperser assemblages distributed on the SDE landscape?8VI.Composite seed shadows and SDE: are there advantages to being dispersed by multiple dispersal agents? 10VII.The context dependence of SDE12VIII.'Distance-dependent SDE'15IX.Emerging issues16X.Conclusions17Acknowledgements17References17 Growth in seed dispersal studies has been fast-paced since... 2010-07-28T00:00:00Z http://www.newphytologist.com/details/journalArticle/765227/Xylem_function_and_growth_rate_interact_to_determine_recovery_rates_after_exposu.html Motivated by the urgent need to understand how water stress-induced embolism limits the survival and recovery of plants during drought, the linkage between water-stress tolerance and xylem cavitation resistance was examined in one of the world's most drought resistant conifer genera, Callitris. Four species were subjected to drought treatments of −5, −8 and −10 MPa for a period of 3–4 wk, after which plants were rewatered. Transpiration, basal growth and leaf water potential were monitored... 2010-07-28T00:00:00Z http://www.newphytologist.com/details/journalArticle/765243/Disjunct_distribution_of_chloroplast_DNA_haplotypes_in_the_understory_perennial_.html The Quaternary climatic changes resulted in range shifts of species, providing chances for hybridization. However, the genetic signatures of such ancient introgression have rarely been reported. To investigate such signatures, we performed a phylogeographical study on the perennial plant Veratrum album ssp. oxysepalum, which may have hybridized long ago with another congeneric species, V. stamineum. Sequence variations in chloroplast DNA (cpDNA) were examined in 43 populations in Japan and... 2010-07-27T00:00:00Z http://www.newphytologist.com/details/journalArticle/765249/Enhancing_the_survival_and_expansion_potential_of_a_founder_population_through_c.html Although founder populations often have low diversity, they can potentially serve as stepping stones for further colonization, as refugia during nonoptimal times and as a source of specialized adaptive potential. The demonstration of such potential within natural plant populations has proven to be particularly difficult. Our investigation into a geographically disjunct population of a heterostylous shrub, Erythroxylum pusillum, aims to explore the evolutionary and ecological consequences of... 2010-07-26T00:00:00Z http://www.newphytologist.com/details/journalArticle/765247/Activation_of_basal_defense_mechanisms_of_rice_plants_by_Glomus_intraradices_doe.html Arbuscular mycorrhizal (AM) fungi establish symbiotic associations with a wide range of plant species. AM fungi must then have the ability to suppress, neutralize or evade the plant defense response. We investigated the physiological and molecular responses of rice to inoculation with the AM fungus Glomus intraradices, focusing on the relevance of the plant defense response during the symbiotic mycorrhizal interaction. Defense gene expression analysis and proteomic approaches were used. The... 2010-07-26T00:00:00Z http://www.newphytologist.com/details/journalArticle/765245/Modified_CAROTENOID_CLEAVAGE_DIOXYGENASE8_expression_correlates_with_altered_bra.html CAROTENOID CLEAVAGE DIOXYGENASE (CCD) genes have been demonstrated to play an integral role in the control of branch development in model plants, including Arabidopsis, pea (Pisum sativum), petunia (Petunia hybrida) and rice (Oryza sativa). Actinidia chinensis is a woody perennial plant grown for commercial production of kiwifruit. CCD7 and CCD8 genes were isolated from A. chinensis and these genes are predominantly expressed in the roots of kiwifruit. AcCCD7 and AcCCD8 were able to... 2010-07-26T00:00:00Z