Abstract:
:SUMMARY The phytotoxin coronatine (COR) contributes to the virulence of Pseudomonas syringae pv. tomato (Pst) strain DC3000 on Arabidopsis thaliana and tomato. However, little is known regarding the role of COR in the virulence of DC3000 on cultivated Brassica spp. In this study, the role of COR and its precursors, coronafacic acid (CFA) and coronamic acid (CMA), were examined in the virulence of Pst DC3000 on collard and turnip, two important edible brassicas. Pst DC3000 and three well-defined COR(-) biosynthetic mutants of DC3000 exhibited substantial differences in the timing and phenotype of disease lesions on collard and turnip. When examined 3 days post-inoculation (dpi), collard inoculated with DC3000 exhibited visible anthocyanin production and lesions were chlorotic and water-soaked. On turnip, chlorotic and necrotic lesions were evident on DC3000-inoculated leaves 5 dpi. The bacterial population dynamics on plants inoculated with DC3000 and the COR(-) mutants indicated that COR was essential for DC3000 to maintain high populations in turnip, but not collard. Real-time quantitative PCR revealed that the jasmonic acid pathway responsive genes, LOX2 and CORI1, were expressed in both hosts inoculated with Pst DC3000. PR1, a marker associated with the salicylic acid pathway, was expressed in collard and turnip inoculated with the CFA(-) CMA(-) mutant DB29, but not DC3000. Further comparison of PR1 and LOX2 expression indicated that CFA plays a subtle role in modulating defence in turnip. This is the first study to investigate the role of COR in the interaction of Pst DC3000 and cultivated brassicas using genetically and biochemically defined COR(-) mutants.
journal_name
Mol Plant Patholjournal_title
Molecular plant pathologyauthors
Elizabeth SV,Bender CLdoi
10.1111/j.1364-3703.2006.00372.xsubject
Has Abstractpub_date
2007-01-01 00:00:00pages
83-92issue
1eissn
1464-6722issn
1364-3703pii
MPP372journal_volume
8pub_type
杂志文章abstract::Hormones are tuners of plant responses to biotic and abiotic stresses. They are involved in various complicated networks, through which they modulate responses to different stimuli. Four hormones primarily regulate plant defence to pathogens: salicylic acid (SA), jasmonic acid (JA), ethylene (Et) and abscisic acid (AB...
journal_title:Molecular plant pathology
pub_type: 杂志文章,评审
doi:10.1111/mpp.12204
更新日期:2015-06-01 00:00:00
abstract::After invasion into intercellular spaces of tomato plants, the soil-borne, plant-pathogenic Ralstonia solanacearum strain OE1-1 forms mushroom-shaped biofilms (mushroom-type biofilms, mBFs) on tomato cells, leading to its virulence. The strain OE1-1 produces aryl-furanone secondary metabolites, ralfuranones (A, B, J, ...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12583
更新日期:2018-04-01 00:00:00
abstract::An understanding of the tolerance mechanisms of Theobroma cacao used against Moniliophthora roreri, the causal agent of frosty pod rot, is important for the generation of stable disease-tolerant clones. A comparative view was obtained of transcript populations of infected pods from two susceptible and two tolerant clo...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12126
更新日期:2014-09-01 00:00:00
abstract::Plants have evolved powerful immune systems to recognize pathogens and avoid invasions, but the genetic basis of plant susceptibility is less well-studied, especially to oomycetes, which cause disastrous diseases in many ornamental plants and food crops. In this research, we identified a negative regulator of plant im...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12883
更新日期:2020-01-01 00:00:00
abstract::SUMMARY The hxc1 mutant was identified by screening an EMS (ethylmethane sulphonate) mutagenized population of Arabidopsis Col-0 plants for an altered hypersensitive response (HR), after spray inoculation with an HR-inducing isolate of Xanthomonas campestris pv. campestris (Xcc) (strain 147). The hxc1 mutant shows a s...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/j.1364-3703.2004.00245.x
更新日期:2004-09-01 00:00:00
abstract::Powdery mildew is a common and widespread plant disease of considerable agronomic relevance. It is caused by obligate biotrophic fungal pathogens which, in most cases, epiphytically colonize aboveground plant tissues. The disease has been typically studied as a binary interaction of the fungal pathogen with its plant ...
journal_title:Molecular plant pathology
pub_type: 杂志文章,评审
doi:10.1111/mpp.12771
更新日期:2019-04-01 00:00:00
abstract::Blue mould, caused primarily by Penicillium expansum, is a major threat to the global pome fruit industry, causing multimillion-dollar losses annually. The blue mould fungus negatively affects fruit quality, thereby reducing fresh fruit consumption, and significantly contributes to food loss. P. expansum also produces...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12990
更新日期:2020-11-01 00:00:00
abstract::Fusarium oxysporum f. sp. radicis-cucumerinum (Forc) causes severe root rot and wilt in several cucurbit species, including cucumber, melon, and watermelon. Previously, a pathogenicity chromosome, chrRC , was identified in Forc. Strains that were previously nonpathogenic could infect multiple cucurbit species after ob...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12927
更新日期:2020-06-01 00:00:00
abstract::Tobacco vein banding mosaic virus (TVBMV) is a potyvirus which mainly infects solanaceous crops. The helper component proteinase (HCpro) of a potyvirus is an RNA silencing suppressor protein and determines the severity of disease symptoms caused by different potyviruses, including TVBMV. It has been shown that substit...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12471
更新日期:2017-10-01 00:00:00
abstract::The expression pattern of pathogenesis-related genes PR-1 to PR-5 was examined in the roots and leaves of Arabidopsis thaliana plants on infection with beet-cyst (Heterodera schachtii) and root-knot (Meloidogyne incognita) nematodes. During H. schachtii parasitism of Arabidopsis, the expression of PR-1, PR-2 and PR-5,...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/j.1364-3703.2010.00675.x
更新日期:2011-05-01 00:00:00
abstract::Fungal plant pathogens secrete effector proteins and metabolites to cause disease. Additionally, some species transfer small RNAs (sRNAs) into plant cells to silence host mRNAs through complementary base pairing and suppress plant immunity. The fungus Sclerotinia sclerotiorum infects over 600 plant species, but little...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12841
更新日期:2019-09-01 00:00:00
abstract::The basal ascomycetes in genus Taphrina have strict host specificity and coevolution with their host plants, making them appealing models for studying the genomic basis of ecological divergence and host adaption. We therefore performed genome sequencing and comparative genomics of different Taphrina species with disti...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12899
更新日期:2020-03-01 00:00:00
abstract::In plants, RNA silencing is a surveillance mechanism against invading viruses. It involves the production of virus-derived small interfering RNAs (vsiRNAs), which guide the RNA-induced silencing complex (RISC) to inactivate viruses. vsiRNAs may also promote the silencing of host mRNAs in a sequence-specific manner. In...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/j.1364-3703.2012.00828.x
更新日期:2013-01-01 00:00:00
abstract::MicroRNA-like RNAs (milRNAs) post-transcriptionally down-regulate target genes. We investigated Fusarium graminearum (Fg) milRNA expression during fungal vegetative growth and infection of wheat. Small RNA sequencing identified 36 milRNAs from Fg, one of which, Fgmil-2, had >100 transcripts per million in conidia, myc...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12859
更新日期:2019-11-01 00:00:00
abstract::In all fungi studied so far, mitogen-activated protein (MAP) kinase cascades serve as central signalling complexes that are involved in various aspects of growth, stress response and infection. In this work, putative components of the yeast Fus3/Kss1-type MAP kinase cascade and the putative downstream transcription fa...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/j.1364-3703.2009.00579.x
更新日期:2010-01-01 00:00:00
abstract::SUMMARY A new BglII satellite DNA has been isolated, cloned and sequenced from the coffee root-knot nematode, Meloidogyne exigua (Nematoda: Tylenchida). It is represented as tandemly repeated sequences with a monomeric unit of 277 bp. The monomers are present at approximately 17 900 copies per haploid genome, and repr...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1046/j.1364-3703.2002.00134.x
更新日期:2002-11-01 00:00:00
abstract::Efficient nutrient acquisition is critical to the fitness of plant pathogens. To address how the late blight agent Phytophthora infestans adapts to nutrients offered by its hosts, genes in glycolytic, gluconeogenic and amino acid pathways were mined from its genome and their expression in different plant tissues and a...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/j.1364-3703.2009.00570.x
更新日期:2009-11-01 00:00:00
abstract::Protein kinases have been implicated in the regulation of many processes that guide pathogen development throughout the course of infection. A survey of the Sclerotinia sclerotiorum genome for genes encoding proteins containing the highly conserved eukaryotic protein kinase (ePK) domain, the largest protein kinase sup...
journal_title:Molecular plant pathology
pub_type: 杂志文章,评审
doi:10.1111/mpp.12321
更新日期:2016-05-01 00:00:00
abstract::Cloning the first avirulence (avr) gene has led not only to a deeper understanding of gene-for-gene interactions in plant disease, but also to fundamental insights into the suppression of basal defences against microbial attack. This article (focusing on Pseudomonas syringae) charts the development of ideas and resear...
journal_title:Molecular plant pathology
pub_type: 杂志文章,评审
doi:10.1111/j.1364-3703.2009.00576.x
更新日期:2009-11-01 00:00:00
abstract::Abstract To identify virulence genes of P. syringae pv. tomato strain DC3000 we screened for mutants with reduced virulence on its plant hosts, Arabidopsis thaliana and tomato. We isolated a Tn5-insertion mutant that exhibited reduced virulence on both hosts. Further characterization showed that this mutant carried a ...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1046/j.1364-3703.2000.00016.x
更新日期:2000-03-01 00:00:00
abstract::Research has established that mutations in highly conserved amino acids of the succinate dehydrogenase (SDH) complex in various fungi confer SDH inhibitor (SDHI) resistance. For Sclerotinia sclerotiorum (Lib.) de Bary, a necrotrophic fungus with a broad host range and a worldwide distribution, boscalid resistance has ...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12222
更新日期:2015-09-01 00:00:00
abstract::Apple scab, caused by the fungal pathogen Venturia inaequalis, is one of the most severe diseases of apple worldwide. It is the most studied plant-pathogen interaction involving a woody species using modern genetic, genomic, proteomic and bioinformatic approaches in both species. Although 'Geneva' apple was recognized...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12269
更新日期:2016-02-01 00:00:00
abstract:UNLABELLED:The Oomycete genus Aphanomyces houses plant and animal pathogens found in both terrestrial and aquatic habitats. Aphanomyces euteiches Drechs. causes seedling damping off and root rot diseases on many legumes. It is the most devastating pea (Pisum sativum) disease in several countries, causing up to 80% loss...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/j.1364-3703.2007.00413.x
更新日期:2007-09-01 00:00:00
abstract::The fungus Parastagonospora nodorum is the causal agent of Septoria nodorum blotch of wheat (Triticum aestivum). The interaction is mediated by multiple fungal necrotrophic effector-dominant host sensitivity gene interactions. The three best-characterized effector-sensitivity gene systems are SnToxA-Tsn1, SnTox1-Snn1 ...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12511
更新日期:2017-04-01 00:00:00
abstract::A 3'-terminal, 77-nucleotide sequence of Bamboo mosaic virus (BaMV) minus-strand RNA (Ba-77), comprising a 5' stem-loop, a spacer and a 3'-CUUUU sequence, can be used to initiate plus-strand RNA synthesis in vitro. To understand the mechanism of plus-strand RNA synthesis, mutations were introduced in the 5' untranslat...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/j.1364-3703.2009.00597.x
更新日期:2010-03-01 00:00:00
abstract::NONEXPRESSOR OF PATHOGENESIS-RELATED PROTEINS1 (NPR1; also known as NIM1) is a master regulator of systemic acquired resistance (SAR). SAR is induced by salicylic acid (SA), leading to the expression of PATHOGENESIS-RELATED (PR) genes. Current evidence suggests that NPR1 is part of a transcription complex tethered to ...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/j.1364-3703.2010.00653.x
更新日期:2011-01-01 00:00:00
abstract::Flower malformation represented by phyllody is a common symptom of phytoplasma infection induced by a novel family of phytoplasma effectors called phyllogens. Despite the accumulation of functional and structural phyllogen information, the molecular mechanisms of phyllody have not yet been integrated with their evolut...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12981
更新日期:2020-10-01 00:00:00
abstract::The effector gene Avr1b-1 of Phytophthora sojae determines the efficacy of the resistance gene Rps1b in soybean. The sequences of the Avr1b-1 locus in 34 Chinese isolates of P. sojae were obtained and analysed by polymerase chain reaction (PCR) and inverse PCR. Four different alleles and a complete deletion mutation o...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/j.1364-3703.2011.00733.x
更新日期:2012-02-01 00:00:00
abstract::Biotrophic fungal pathogens must evade or suppress plant defence responses to establish a compatible interaction in living host tissue. In addition, metabolic changes during disease reflect both the impact of nutrient acquisition by the fungus to support proliferation and the integration of metabolism with the plant d...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12485
更新日期:2017-12-01 00:00:00
abstract::Novel approaches for the control of agriculturally damaging nematodes are sorely needed. Endoparasitic nematodes complete their life cycle within the root vascular cylinder, inducing specialized feeding cells: giant cells for root-knot nematodes and syncytia for cyst nematodes. Both nematodes hijack parts of the trans...
journal_title:Molecular plant pathology
pub_type: 杂志文章
doi:10.1111/mpp.12114
更新日期:2014-08-01 00:00:00