JOHN INNES HORPICULTURAL INSPITUTION

Via: Air Mail Bayfordbury Ninth |
Hertford . _ January

Herts. , 1954

Dear Dr. Lederberg,

I am very keen to spend @ period of study and research in
the United States after presenting ny Ph.D. Thesis in March this
‘year. I have been working with a pathogenic fungus Cladosporium
fulvum which has several well defined physiologic races distinguished
by reactions on-a differential tomato host plant series. The object
of the work was breeding for. resistance and studying variation in the
fungus. I produced some mutants and have sent 4 note on this for the
next number of the Microbial Genetics Bulletin. Unfortunately my. other
publications will not be out before June and later. However I would
pe pleased to send you further details of my work.
I want to study methods and techniques in mbcrobial genetics
so that I can aoply them to some plant pathogens. For instance I
would Like to try working out.baeterial methods with the sporidial
stage of a smut fungus. I am also interested in physiologic
«gpeeialisation through. heterogaryosis. -— to see if it oceurs in
* pathogenic fungi. oe
ff amwriting bd. find owt if I could spend some time wth you
<-y Have applied fora Commonwealth Fellowship and also

   
 

 

in Madison: » I
_ for & NationalAcademy of Sciences F.G.A. Fellowship. ~I cannot of
= gourse estimate my. gnanees,.of getting one of these and would be pleased
“to know of any post-doctoral or other research fellowshios tenable at

“Madison. I:want to have ‘my wife and child with me during my stay.

I have been on the staff of the Genebics Department here under
Dr. D. Lewis since 1951 and I know he would willingly give you an
account of me. .

Yours sincerely,

PR. Day B.Se., . ,
Scientific Officer,
Genetics Departmént.

pr. J. Lederberg,
Department of Genetics,
University of Wisconsin,
Madison, Wisconsin,
United States of America.