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The effect of temperature on Agrobacterium tumefaciens ‐mediated gene transfer to plants
Author(s) -
Dillen Willy,
Clercq Janniek,
Kapila Jyoti,
Zambre Mukund,
Montagu Marc,
Ange Geert
Publication year - 1997
Publication title -
the plant journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.058
H-Index - 269
eISSN - 1365-313X
pISSN - 0960-7412
DOI - 10.1046/j.1365-313x.1997.12061459.x
Subject(s) - agrobacterium tumefaciens , octopine , agrobacterium , transformation (genetics) , ti plasmid , plasmid , t dna binary system , biology , rhizobiaceae , nicotiana tabacum , genetics , gene , microbiology and biotechnology , vector (molecular biology) , bacteria , recombinant dna , symbiosis
Agrobacterium tumefaciens is generally used to achieve genetic transformation of plants. The temperatures that have been used for infection with Agrobacterium in published transformation protocols differ widely and, to our knowledge, the effect of temperature on the efficiency of T‐DNA transfer to plants has not been investigated systematically. Agrobacterium tumefaciens strains harbouring a binary vector with the β‐glucuronidase ( uidA ) gene and either a nopaline‐, an octopine‐ or an agropine/ succinamopine‐type helper plasmid were tested in two transformation systems at temperatures between 15 and 29°C. One system involved cocultivation of Phaseolus acutifolius callus whereas in the other system Nicotiana tabacum leaves were vacuum‐infiltrated. In both situations, irrespective of the type of helper plasmid, the levels of transient uidA expression decreased notably when the temperature was raised above 22°C. Expression was low at 27°C and undetectable at 29°C. We anticipate that the efficiency of many published transformation protocols can be improved by reconsidering the factor of temperature.