SPA1: A New Genetic Locus Involved in Phytochrome A–Specific Signal Transduction
نویسندگان
چکیده
منابع مشابه
SPA1: a new genetic locus involved in phytochrome A-specific signal transduction.
To identify mutants potentially defective in signaling intermediates specific to phytochrome A (phyA), we screened for extragenic mutations that suppress the morphological phenotype exhibited by a weak phyA mutant (phyA-105) of Arabidopsis. A new recessive mutant, designated spa1 (for suppressor of phyA-105), was isolated and mapped to the bottom of chromosome 2. spa1 phyA-105 double mutants ex...
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The five members of the phytochrome photoreceptor family of Arabidopsis thaliana control morphogenesis differentially in response to light. Genetic analysis has identified a signaling pathway that is specifically activated by phytochrome A. A component in this pathway, SPA1 (for "suppressor of phyA-105"), functions in repression of photomorphogenesis and is required for normal photosensory spec...
متن کاملPAT1, a new member of the GRAS family, is involved in phytochrome A signal transduction.
Light signaling via the phytochrome A (phyA) photoreceptor controls basic plant developmental processes including de-etiolation and hypocotyl elongation. We have identified a new Arabidopsis mutant, pat (phytochrome A signal transduction)1-1, which shows strongly reduced responses in continuous far-red light. Physiological and molecular data indicate that this mutant is disrupted at an early st...
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Spontaneously hypertensive mice have been characterized as more sensitive to environmental heat than normotensive mice. A breeding program was therefore initiated to examine the possible genetic link between thermosensitivity and hypertension. Crossbreeding of spontaneously hypertensive mice with randomly bred normotensive mice produced F1 hybrids, which were then intercrossed to create a F2 po...
متن کاملTwo GRAS proteins, SCARECROW-LIKE21 and PHYTOCHROME A SIGNAL TRANSDUCTION1, function cooperatively in phytochrome A signal transduction.
Photoreceptors, especially the far-red light-absorbing phytochrome A, play a crucial role in early seedling development, triggering the transition from etiolated to photomorphogenic growth. Here, we describe the biological functions of two GRAS proteins from Arabidopsis (Arabidopsis thaliana), SCARECROW-LIKE21 (SCL21) and PHYTOCHROME A SIGNAL TRANSDUCTION1 (PAT1), which are specifically involve...
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ژورنال
عنوان ژورنال: The Plant Cell
سال: 1998
ISSN: 1040-4651,1532-298X
DOI: 10.1105/tpc.10.1.19