Affiliation:
1. Biochemistry and Physiology Department, IACR-Rothamsted, Harpenden, Herts AL5 2JQ, UK.
Abstract
The development of plant root systems is sensitive to the availability and distribution of nutrients within the soil. For example, lateral roots proliferate preferentially within nitrate (NO
3
–
)-rich soil patches. A NO
3
−
-inducible
Arabidopsis
gene (
ANR1
), was identified that encodes a member of the MADS box family of transcription factors. Transgenic plants in which
ANR1
was repressed had an altered sensitivity to NO
3
–
and no longer responded to NO
3
–
-rich zones by lateral root proliferation, indicating that
ANR1
is a key determinant of developmental plasticity in
Arabidopsis
roots.
Publisher
American Association for the Advancement of Science (AAAS)
Reference38 articles.
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