'Green revolution' genes encode mutant gibberellin response modulators
Article Abstract:
New wheat grain varieties grown during the 1960s and 1970s are shorter, resistant to wind and rain damage and increase grain yield. Their shortness is a response to gibberellin, the plant growth hormome, which is conferred by mutant dwarfing alleles at one of two Reduced height-1 (Rht-B1 and Rht-D1) loci. It is shown that RhtB1/D1 and maize dwarf-8 (d8) are orthologues of the Araidopsis Gibberellin Insensitive (GA1) gene, which encode proteins resembling nuclear transcription factors.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Suppression of auxin signal transduction by a MAPK cascade in higher plants
Article Abstract:
The auxin plant hormone activates certain early response genes. An auxin responsive element ER7 was tested to confirm that the early auxin responses are conserved in higher plants. The synthetic ER7 promoter conferred auxin inducibility, although the mutated Er7 element was not induced by auxin. This shows that maize mesophyll protoplasts respond to the physiological auxin levels and that early auxin responses may be conserved in monocotyledenous and dicotyledonous plants.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Two-component circuitry in Arabidopsis cytokinin signal transduction
Article Abstract:
The role of plant hormones called cytokinins is examined in detail, with a focus on signal transduction and two-component circuitry found in Arabidopsis.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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