LEAF ABSCISSION IN COLEUS. I. ABSCISSION ZONE FORMATION AND THE EFFECT OF AUXIN ON ABSCISSION
نویسندگان
چکیده
منابع مشابه
Auxin Structure & Abscission Activity.
Since the early X-ork of Laibaclh (7 al)scission. lhas been consi(lere(l to be controlled bAauxin. but comlparative effects have heen reporte(l for onlI a few auxinls (4, 5, 13 ) an(l it is not clear to h-liat extent abscission activit, is reallrelate(l to auixinl activity. A\oreover, whlen comparative stud(lies have been imia(le only the inhibitory effects of aulxins have beeni compared (4). T...
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The role of alpha-naphthaleneacetic acid (NAA) in the control of abscission in Citrus (Citrus sinensis L. Osbeck) leaf explants and its conjugation were studied in non-aged and 24-hour-aged explants. Dipping non-aged explants in 1.5 micromolar NAA for 15 minutes immediately after excision did not delay abscission whereas 150 micromolar NAA effectively delayed it. As incubation time was prolonge...
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In 1955 Osborne reported that petiole sections cut from senescent leaves of any one of many species could speed the abscission of excised and debladed bean petioles (5). The sections from senescent leaves speeded abscission if directly attached or if one attached an agar block on which they had stood for 24 hours. She "proposed that leaf abscissions may be controlled not only by endogenous auxi...
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Background Leaf abscission is an important trait for biomass production and seasonal acclimation in deciduous trees of the temperate region. Various plant hormones are involved in the timing of abscission. For example, ethylene signaling is required to induce hydrolysis of cell walls, while an auxin gradient [1] was suggested to act upstream of ethylene on the onset of leaf abscission. Besides ...
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The abscission process is initiated by changes in the auxin gradient across the abscission zone (AZ) and is triggered by ethylene. Although changes in gene expression have been correlated with the ethylene-mediated execution of abscission, there is almost no information on the molecular and biochemical basis of the increased AZ sensitivity to ethylene. We examined transcriptome changes in the t...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 1972
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.1972.tb01275.x