Inheritance and Expression of the Mouse Metallothionein Gene in Tobacco | Zendy

Indu B. Maiti | Zendy; George J. Wagner | Zendy; Ricky Yeargan | Zendy; Arthur G. Hunt | Zendy

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Inheritance and Expression of the Mouse Metallothionein Gene in Tobacco

Author(s) -

Indu B. Maiti,

George J. Wagner,

Ricky Yeargan,

Arthur G. Hunt

Publication year - 1989

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.91.3.1020

Subject(s) - metallothionein , nicotiana tabacum , biology , transgene , genetically modified crops , gene , genetics , mendelian inheritance , cadmium , backcrossing , gene expression , botany , chemistry , organic chemistry

Genetically engineered seedlings obtained from self-fertilized transgenic tobacco (Nicotiana tabacum) contained and expressed the mouse metallothionein and kanamycin resistance marker genes and were more tolerant to cadmium stress than untransformed controls. Cadmium accumulation in leaves of transgenic seedlings exposed to a low, field-like Cd concentration (0.02 micromolar) was about 20% lower than that in untransformed controls. Genetic analysis of R1 and R2 progeny showed inheritance of the marker gene to be as a dominant Mendelian trait. These results suggest the possibility of developing transgenic plants with modified tolerance to heavy metal stress and food crops having lower Cd content.

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