نتایج جستجو برای: لکه برگی باکتریایی و pseudomonas syringae pv maculicola

تعداد نتایج: 834103  

Trachyspermum copticum (Apiaceae) is an annual plant which grows in Iran. The fruits of T. copticum (Ajwain) traditionally were used as diuretic, carminative, and antihelmentic. Some biological effects of Ajwain such as antiviral, antifungal and antioxidant activities have been confirmed. The objective of the present investigation was toevaluate the antibacterial activity of e...

Journal: :Applied and environmental microbiology 1997
C Manceau A Horvais

Phylogenetic relationships among 77 bacterial strains belonging to Pseudomonas syringae and Pseudomonas viridiflava species were assessed by analysis of the PCR-restriction fragment length polymorphism (RFLP) patterns of three DNA fragments corresponding to rrs and rrl genes and the internal transcribed spacer, ITS1. No difference among all strains in rrs and rrl genes was observed with 14 rest...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2000
J R Alfano A O Charkowski W L Deng J L Badel T Petnicki-Ocwieja K van Dijk A Collmer

The plant pathogenic bacterium Pseudomonas syringae is divided into pathovars differing in host specificity, with P. syringae pv. syringae (Psy) and P. syringae pv. tomato (Pto) representing particularly divergent pathovars. P. syringae hrp/hrc genes encode a type III protein secretion system that appears to translocate Avr and Hop effector proteins into plant cells. DNA sequence analysis of th...

Journal: :Journal of bacteriology 2005
Vinita Joardar Magdalen Lindeberg Robert W Jackson Jeremy Selengut Robert Dodson Lauren M Brinkac Sean C Daugherty Robert Deboy A Scott Durkin Michelle Gwinn Giglio Ramana Madupu William C Nelson M J Rosovitz Steven Sullivan Jonathan Crabtree Todd Creasy Tanja Davidsen Dan H Haft Nikhat Zafar Liwei Zhou Rebecca Halpin Tara Holley Hoda Khouri Tamara Feldblyum Owen White Claire M Fraser Arun K Chatterjee Sam Cartinhour David J Schneider John Mansfield Alan Collmer C Robin Buell

Pseudomonas syringae pv. phaseolicola, a gram-negative bacterial plant pathogen, is the causal agent of halo blight of bean. In this study, we report on the genome sequence of P. syringae pv. phaseolicola isolate 1448A, which encodes 5,353 open reading frames (ORFs) on one circular chromosome (5,928,787 bp) and two plasmids (131,950 bp and 51,711 bp). Comparative analyses with a phylogeneticall...

ژورنال: Plant protection journal 2017
ساغر کتابچی, نیکتا ابراهیمی وحید روشن

امروزه آلودگی محیط زیست و تجمع مواد سمی در آن یکی از مسئله‌های بسیار خطرناک برای سلامتی بشر و موجودات زنده میباشد. همینطور پدیده مقاوت به آنتی بیوتیک ها و پیدایش سویه های مقاوم یکی از مشکلاتی است که کشاورزان با آن روبرو می­باشند. استفاده از ترکیبات طبیعی یکی از راهکارهای موثر برای این مشکلات میباشد. در این تحقیق اثر ضد میکروبی اسانس وعصاره گیاه Satureja bachtiarica   به روش انتشار دیسک  روی پات...

ژورنال: بیماریهای گیاهی 2015
سید محسن تقوی, فاطمه موحدی پاریزی

طی سال‌های 1390 و 1391، 11 جدایه  از گلخانه‌های خیار در استان‌کرمان و 14 جدایه از گلخانه‌های خیار در استان فارس به عنوان عامل بیماری لکه زاویه‌ای خیار شناسایی ومورد بررسی قرار گرفتند. کلیه جدایه‌ها از لحاظ خصوصیات فیزیولوژیکی، بیوشیمیایی، تغذیه‌ای و تکثیر قطعه‌ی 560 bp توسط آغازگرD21  و D22 مورد بررسی قرار گرفتند.همچنین به منظور بررسی تنوع جدایه‌ها آزمونrep-PCR با استفاده از آغازگرهای BOX و ERI...

Journal: :Applied and Environmental Microbiology 1988

Journal: :Journal of bacteriology 1993
S D Mills C A Jasalavich D A Cooksey

Specific induction of the copper resistance operon (cop) promoter from Pseudomonas syringae was measured by beta-galactosidase production from a cop promoter-lacZ fusion. Induction of the cop promoter in P. syringae pv. syringae required trans-acting factors from copper resistance plasmid pPT23D, from which cop was originally cloned. Tn5 mutagenesis of pPT23D was used to localize two complement...

Journal: :Applied and environmental microbiology 2002
Yoav Bashan Luz E De-Bashan

Pseudomonas syringae pv. tomato, the causal agent of bacterial speck of tomato, and the plant growth-promoting bacterium Azospirillum brasilense were inoculated onto tomato plants, either alone, as a mixed culture, or consecutively. The population dynamics in the rhizosphere and foliage, the development of bacterial speck disease, and their effects on plant growth were monitored. When inoculate...

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