Growth responses of Betula pendula ecotypes to red and far-red light
نویسندگان
چکیده
منابع مشابه
Twilight far-red treatment advances leaf bud burst of silver birch (Betula pendula).
Bud development of boreal trees in spring, once initiated, is driven by ambient air temperature, but the mechanism triggering bud development remains unclear. We determined if some aspect of the diurnal or seasonal light regime influences initiation of bud burst once the chilling requirement is met. We grew 3-year-old birch plantlets cloned from a mature tree of boreal origin in light condition...
متن کاملDifferential responses of silver birch (Betula pendula) ecotypes to short-day photoperiod and low temperature.
We investigated interrelations of dormancy and freezing tolerance and the role of endogenous abscisic acid (ABA) in the development of silver birch (Betula pendula Roth) ecotypes in controlled environments. Short-day treatment induced growth cessation, bud set and dormancy development, as well as initiation of cold acclimation and an increase in freezing tolerance. Subsequent low temperature an...
متن کاملshl, a New set of Arabidopsis mutants with exaggerated developmental responses to available red, far-red, and blue light.
The interaction of light perception with development is the subject of intensive genetic analysis in the model plant Arabidopsis. We performed genetic screens in low white light-a threshold condition in which photomorphogenetic signaling pathways are only partially active-for ethyl methane sulfonate-generated mutants with altered developmental phenotypes. Recessive mutants with exaggerated deve...
متن کاملA red and far-red light receptor mutation confers resistance to the herbicide glyphosate
Glyphosate is a widely applied broad-spectrum systemic herbicide that inhibits competitively the penultimate enzyme 5-enolpyruvylshikimate 3-phosphate synthase (EPSPS) from the shikimate pathway, thereby causing deleterious effects. A glyphosate-resistant Arabidopsis mutant (gre1) was isolated and genetic analyses indicated that a dysfunctional red (R) and far-red (FR) light receptor, phytochro...
متن کاملAn Arabidopsis mutant hypersensitive to red and far-red light signals.
A new mutant called psi2 (for phytochrome signaling) was isolated by screening for elevated activity of a chlorophyll a/b binding protein-luciferase (CAB2-LUC) transgene in Arabidopsis. This mutant exhibited hypersensitive induction of CAB1, CAB2, and the small subunit of ribulose-1,5-bisphosphate carboxylase (RBCS) promoters in the very low fluence range of red light and a hypersensitive respo...
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ژورنال
عنوان ژورنال: Electronic Journal of Biotechnology
سال: 2005
ISSN: 0717-3458,0717-3458
DOI: 10.2225/vol8-issue1-fulltext-10