Abstract:
:ABSTRACT Phytophthora capsici is a diverse species causing disease on a broad range of both temperate and tropical plants. In this study, we used cultural characteristics, amplified fragment length polymorphism (AFLP), and DNA sequence analyses of the ribosomal internal transcribed spacer (ITS) region and mitochondrial cytochrome oxidase II (cox II) genes to characterize temperate and tropical isolates from a wide range of host species. All but one temperate isolate grew at 35 degrees C, while all tropical isolates did not. All but two tropical isolates formed chlamydospores, while temperate isolates did not. There was strong bootstrap support for separation of temperate and tropical isolates using AFLP analysis; however, the temperate isolates appeared as a subgroup within the observed variation of the tropical isolates. The majority of temperate isolates clustered within a single clade with low variation regardless of host or geographical origin, while the tropical isolates were more variable and grouped into three distinct clades. Two clades of tropical isolates grouped together and were affiliated closely with the temperate isolates, while the third tropical clade was more distantly related. Phylogenetic analysis of the ITS regions resulted in similar groupings and variation within and between the temperate and tropical isolates as with the AFLP results. Sequence divergence among isolates and clades was low, with more variation within the tropical isolates than within the temperate isolates. Analysis of other species revealed shorter branch lengths separating temperate and tropical isolates than were observed in comparisons among other phylogenetically closely related species in the genus. Analysis of cox II sequence data was less clear. Although the temperate and tropical isolates grouped together apart from other species, there was no bootstrap support for separating these isolates. Restriction fragment length polymorphism (RFLP) analysis of the ITS regions separated the temperate and tropical isolates, as in the AFLP and ITS phylogenetic analyses. However, RFLP analysis of the cox I and II gene cluster did not distinguish between temperate and tropical isolates. The differences in grouping of isolates in these two RFLP studies should be helpful in identifying isolate subgroups. Our data do not fully clarify whether or not temperate and tropical isolates should be separated into different species. The available worldwide data are incomplete and the full range of variation in the species is not yet known. We suggest refraining from using the epithet P. tropicalis until more data are available.
journal_name
Phytopathologyjournal_title
Phytopathologyauthors
Bowers JH,Martin FN,Tooley PW,Luz EDdoi
10.1094/PHYTO-97-4-0492subject
Has Abstractpub_date
2007-04-01 00:00:00pages
492-503issue
4eissn
0031-949Xissn
1943-7684journal_volume
97pub_type
杂志文章相关文献
PHYTOPATHOLOGY文献大全abstract::Tobacco mosaic virus (TMV) is an extensively studied RNA virus known to infect tobacco (Nicotiana tabacum) and other solanaceous crops. TMV has been classified as a seedborne virus in tobacco, with infection of developing seedlings thought to occur from contact with the TMV-infected seed coat. The mechanism of TMV tra...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-06-19-0201-FI
更新日期:2020-01-01 00:00:00
abstract::Blossoms, leaves, fruit, and woody tissues of almond can be affected by anthracnose caused by Colletotrichum acutatum. Because the disease occurs throughout rainy spring seasons, the effect of temperature and wetness duration on disease development was evaluated in controlled studies. The lowest inoculum concentration...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-07-10-0193
更新日期:2011-08-01 00:00:00
abstract::ABSTRACT Meloidogyne chitwoodi and M. fallax are serious pests of potato, and both species have been recently designated as quarantine organisms in the European Community and in Canada. The sympatric and less damaging species M. hapla is often found associated with both of them under temperate climates. Here, we descr...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO.1999.89.5.380
更新日期:1999-05-01 00:00:00
abstract::Zebra chip (ZC) of potato is putatively caused by the fastidious, phloem-limited bacterium 'Candidatus Liberibacter solanacearum' (Lso), which is transmitted by the potato psyllid (Bactericera cockerelli). The disease, which significantly impacts both crop yield and quality, was first identified in the United States f...
journal_title:Phytopathology
pub_type: 杂志文章,评审
doi:10.1094/PHYTO-12-14-0365-FI
更新日期:2015-07-01 00:00:00
abstract::Resistance to the eight races (3, 7, 19, 31, 81, 449, 453, and 1545) of the pathogenic fungus Colletotrichum lindemuthianum (anthracnose) was evaluated in F(3) families derived from the cross between the anthracnose differential bean cultivars Kaboon and Michelite. Molecular marker analyses were carried out in the F(2...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-11-10-0296
更新日期:2011-06-01 00:00:00
abstract::Kiwifruit bleeding sap samples, collected in Italian and Chilean orchards from symptomatic and asymptomatic plants, were evaluated for the presence of Pseudomonas syringae pv. actinidiae, the causal agent of bacterial canker. The saps were sampled during the spring in both hemispheres, before the bud sprouting, during...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-08-17-0278-R
更新日期:2018-05-01 00:00:00
abstract::ABSTRACT The comovirus Bean pod mottle virus (BPMV) is widespread in the soybean-growing regions in the United States. It has a bipartite genome consisting of RNA1 and RNA2, which are encapsidated separately. We previously have reported the occurrence in nature of two distinct subgroups of BPMV strains (subgroups I an...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-97-0079
更新日期:2007-01-01 00:00:00
abstract::Xylella fastidiosa infects a wide range of plant hosts and causes Pierce's disease (PD) of grapevines. The type 1 multidrug resistance (MDR) efflux system is essential for pathogenicity and survival of bacterial pathogens in planta. X. fastidiosa, with a single MDR system, is significantly more vulnerable to inhibitio...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-07-18-0244-FI
更新日期:2019-02-01 00:00:00
abstract::Venturia effusa (syn. Fusicladium effusum), causal agent of pecan scab, is the most prevalent pathogen of pecan (Carya illinoinensis), causing severe yield losses in the southeastern United States. V. effusa is currently known only by its asexual (conidial) stage. However, the degree and distribution of genetic divers...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-07-17-0233-R
更新日期:2018-07-01 00:00:00
abstract::ABSTRACT Genetic resistance often fails because a resistance-breaking (RB) pathogen genotype increases in frequency. On the basis of an analysis of cellular plant pathogens, it was recently proposed that the evolutionary potential of a pathogen is a major determinant of the durability of resistance. We test this hypot...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO.2003.93.8.941
更新日期:2003-08-01 00:00:00
abstract::Double-stranded RNAs purified from the V2356 ('Successa') sour cherry source of the Shirofugen stunt disease (SSD) were sequenced using a 454 pyrosequencing multiplex approach. The 15,646 reads obtained were assembled into 279 contigs, 5 of which, totaling almost 16.9 kbp and 5,332 reads (34% of sample reads), showed ...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-10-12-0275-R
更新日期:2013-03-01 00:00:00
abstract::ABSTRACT During gel (gum) formation in angiosperm trees, fibrillar material accumulated in protective layers of xylem parenchyma cells before being secreted across half-bordered pit membranes into vessel elements. Immunogold labeling demonstrated that this fibrillar material was mainly composed of partially esterified...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO.1998.88.6.494
更新日期:1998-06-01 00:00:00
abstract::New York Clavibacter michiganensis subsp. michiganensis isolates, collected from disparate bacterial canker of tomato outbreaks over the past 11 years, were characterized with a multilocus sequence analysis (MLSA) scheme that differentiated the 51 isolates into 21 haplotypes with a discriminatory power of 0.944. The M...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-06-14-0178-R
更新日期:2015-02-01 00:00:00
abstract::ABSTRACT Over 4 years, the environmental conditions and the causal agents of Fusarium head blight (FHB) disease of wheat were determined in field sites in four European countries: Hungary, Ireland, Italy, and the United Kingdom. Polymerase chain reaction-based methods were used to detect each species causing FHB and q...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-98-1-0069
更新日期:2008-01-01 00:00:00
abstract::Seiridium cardinale is the pathogenic fungus of unknown origin responsible for a world pandemic known as cypress canker affecting several species of Cupressaceae in both the Northern and Southern Hemisphere. In this study, a comparative genetic analysis of worldwide populations was performed using sequence analysis of...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-05-11-0144
更新日期:2011-12-01 00:00:00
abstract::ABSTRACT Alternaria alternata is the causal organism of core rot decay symptoms in susceptible cv. Red Delicious but not in resistant cv. Golden Delicious. The two cultivars did not differ in natural colonization of the style and ovary during the first week after full bloom; colonization of the ovary in the susceptibl...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-97-11-1415
更新日期:2007-11-01 00:00:00
abstract::ABSTRACT One of the major concerns with Fusarium head blight (FHB) of barley is the potential health risks to livestock and humans through the accumulation of the mycotoxin deoxynivalenol (DON) in infected grain. To define the role of the host in DON accumulation during the early stages of disease development, we cond...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO.2004.94.7.766
更新日期:2004-07-01 00:00:00
abstract::ABSTRACT Leptosphaeria maculans causes blackleg of oilseed rape. Gene-for-gene interactions between race PG3 and Brassica napus cv. Quinta were related to interaction between the fungal avirulence (Avr) gene AvrLm1 and the corresponding resistance gene Rlm1. AvrLm1 isolates were aviru-lent on cvs. Doublol, Vivol, Colu...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO.2001.91.1.70
更新日期:2001-01-01 00:00:00
abstract::Sweetpotato production in the United States is limited by several postharvest diseases, and one of the most common is Fusarium root rot. Although Fusarium solani is believed to be the primary causal agent of disease, numerous other Fusarium spp. have been reported to infect sweetpotato. However, the diversity of Fusar...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-01-16-0009-R
更新日期:2016-08-01 00:00:00
abstract::ABSTRACT Phytophthora cinnamomi isolates collected from 1977 to 1986 and 1991 to 1993 in two regions in South Africa were analyzed using isozymes. A total of 135 isolates was analyzed for 14 enzymes representing 20 putative loci, of which four were polymorphic. This led to the identification of nine different multiloc...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO.1997.87.8.822
更新日期:1997-08-01 00:00:00
abstract::The distinguished intracellular stylet puncture called phloem-pd (potential drop [pd]) produced by Myzus persicae has been associated with the transmission of the semipersistently transmitted, phloem-limited Beet yellows virus (BYV, Closterovirus). However, the production of intracellular punctures in phloem cells (ph...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-07-19-0260-FI
更新日期:2020-01-01 00:00:00
abstract::ABSTRACT Bean calico mosaic virus (BCMoV), a whitefly-transmitted geminivirus from Sonora, Mexico, was purified, and the genome components were cloned and sequenced. Purified viral fractions and cloned genome components were infectious by biolistic inoculation to bean, completing Koch's postulates for both. The B biot...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO.1999.89.4.273
更新日期:1999-04-01 00:00:00
abstract::ABSTRACT Fusarium fungi, including F. culmorum, cause seedling blight, foot rot, and head blight diseases of cereals, resulting in yield loss. In a screen for potential disease control organisms and agents, Pseudomonas fluorescens strains MKB 100 and MKB 249, P. frederiksbergensis strain 202, Pseudomonas sp. strain MK...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-96-0386
更新日期:2006-04-01 00:00:00
abstract::ABSTRACT A full understanding of the pathology of esca, a chronic disease of grapevines, has been problematic, in part because the identity of the pathogen (or pathogens) has been difficult to determine. The wood decay symptoms of esca have been most often associated with Phellinus igniarius or Fomitiporia punctata. H...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO.2000.90.9.967
更新日期:2000-09-01 00:00:00
abstract::ABSTRACT Alternative control agents, including UV-type C (254 nm) irradiation, yeasts antagonistic to fungal growth, chitosan and harpin, were evaluated for their ability to induce resistance in cv. Red Delicious apple fruit against postharvest blue mold caused by Penicillium expansum. Freshly harvested and controlled...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO.2002.92.8.900
更新日期:2002-08-01 00:00:00
abstract::Leaf rust, caused by Puccinia triticina, is one of the main fungal diseases limiting durum wheat production. This study aimed to characterize previously undescribed genes for leaf rust resistance in durum wheat. Six different resistant durum genotypes were crossed to two susceptible International Maize and Wheat Impro...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-03-14-0065-R
更新日期:2014-12-01 00:00:00
abstract::Limber pine (Pinus flexilis) is being threatened by the lethal disease white pine blister rust caused by the non-native pathogen Cronartium ribicola. The types and frequencies of genetic resistance to the rust will likely determine the potential success of restoration or proactive measures. These first extensive inocu...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-04-13-0092-R
更新日期:2014-02-01 00:00:00
abstract::The objectives of this study were to investigate the host range of Eutypa lata in the major grape-growing regions in California and to analyze the phenotypic variation and phylogenetic diversity of E. lata isolates. Perithecia of E. lata were found on grapevines, in apricot, almond, cherry, apple, and pear tree orchar...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-02-10-0040
更新日期:2010-10-01 00:00:00
abstract::Fusarium wilt incited by Fusarium oxysporum f. sp. niveum is a seed-transmitted disease that causes significant yield loss in watermelon production. The pathogen may infect watermelon seeds latently, which can be an important inoculum source and contribute to severe disease outbreak. However, information regarding inf...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-12-16-0429-R
更新日期:2017-07-01 00:00:00
abstract::Bacterial leaf streak (BLS) of wheat, caused by Xanthomonas translucens pv. undulosa, has been a notable disease in Minnesota wheat fields over the past decade. Potential sources of the pathogen include infested seed and crop debris. Perennial weeds are also considered a possible inoculum source, but no surveys have b...
journal_title:Phytopathology
pub_type: 杂志文章
doi:10.1094/PHYTO-08-20-0337-R
更新日期:2020-11-23 00:00:00