Relationship between Nif plasmids of fast-growing Rhizobium species and Ti plasmids of Agrobacterium tumefaciens.
نویسندگان
چکیده
By use of the Southern blot hybridization technique the extent of DNA homology was determined between the Nif plasmid of a number of fast-growing Rhizobium species and Ti plasmids of the octopine (pTiAch5) and nopaline (pTiC58) type. DNA sequences common to these plasmids were located on functional maps of the Ti plasmids. No homology between Nif plasmids and the T region of Ti plasmids was detected.
منابع مشابه
The Agrobacterium Ti Plasmids.
Agrobacterium tumefaciens is a plant pathogen with the capacity to deliver a segment of oncogenic DNA carried on a large plasmid called the tumor-inducing or Ti plasmid to susceptible plant cells. A. tumefaciens belongs to the class Alphaproteobacteria, whose members include other plant pathogens (Agrobacterium rhizogenes), plant and insect symbionts (Rhizobium spp. and Wolbachia spp., respecti...
متن کاملPlasmid-linked nif and "nod" genes in fast-growing rhizobia that nodulate Glycine max, Psophocarpus tetragonolobus, and Vigna unguiculata.
Forty-nine fast-growing Rhizobium strains from the nodules of 26 different tropical legume genera were screened to find isolates that would (i) nodulate, e.g., winged beans, so producing large nodules for RNA and protein isolation; (ii) also nodulate various small-seeded legumes, thus allowing screening of large numbers of mutants; and (iii) harbor plasmids containing nif structural genes as we...
متن کاملA new method for construction of Ti plasmid-less strains in Agrobacterium tumefaciens.
Agrobacterium tumefaciens harboring a Ti plasmid causes plant tumorigenesis and it's DNA transfer system have been extensively used in plant biotechnology. Because Ti plasmids are high stable in agrobacterial hosts, their curing is very difficult by conventional methods. Here, we introduced a novel curing method by using Ti plasmids incompatibility.
متن کاملTransfer of an indigenous plasmid of Rhizobium loti to other rhizobia and Agrobacterium tumefaciens.
Rhizobium loti strains NZP2037 and NZP2213 were each found to contain a single large plasmid: pRlo2037a (240 MDal) and pRlo2213a (120 MDal), respectively. Plasmid DNA present in crude cell lysates of each strain and purified pRlo2037a DNA did not hybridize with pID1, a recombinant plasmid containing part of the nitrogen fixation (nif) region of R. meliloti, indicating that nif genes were not pr...
متن کاملTrans-kingdom conjugation between Agrobacterium tumefaciens and Saccharomyces cerevisiae, a bacterium and a yeast.
For conjugation between prokaryotic Agrobacterium tumefaciens and eukaryotic Saccharomyces cerevisiae, we constructed two novel conjugative plasmids. A. tumefaciens transmitted the plasmids to S. cerevisiae with the aid of tra genes on a helper plasmid. The transmitted plasmids retained their original structure and function in transconjugant yeasts. The presence of Ti plasmid barely affected th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of bacteriology
دوره 149 3 شماره
صفحات -
تاریخ انتشار 1982