1987
DOI: 10.1104/pp.84.2.390
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A Kinetic Analysis of Phytochrome Controlled Mesocotyl Growth in Zea mays Seedlings

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Cited by 16 publications
(11 citation statements)
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“…Light-mediated increase in PAO activity in the outer tissues of the apical growing zone occurs with a time course correlating with that of the light-induced inhibition of elongation of the same zone (Iino 1982;Yahalom et al 1987; this paper). Actually, within 5 h from the onset of light treatment, PAO activity increases in this zone up to 100% and elongation is inhibited to 50% compared with the dark control (Fig.…”
Section: Discussionmentioning
confidence: 86%
“…Light-mediated increase in PAO activity in the outer tissues of the apical growing zone occurs with a time course correlating with that of the light-induced inhibition of elongation of the same zone (Iino 1982;Yahalom et al 1987; this paper). Actually, within 5 h from the onset of light treatment, PAO activity increases in this zone up to 100% and elongation is inhibited to 50% compared with the dark control (Fig.…”
Section: Discussionmentioning
confidence: 86%
“…As reported previously for the hypocotyl of etiolated dicot seedlings (Cosgrove 1988, Kigel andCosgrove 1991), blue light produced a particularly rapid and strong inhibitory effect; therefore, this light quality was utilized for further investigations. Marking experiments confirmed that the maximal elongation rate occurs in the upper 5-mm zone of the MEZ and slows down to zero at the lower end of the subtending 5-mm zone (Yahalom et al 1987). Therefore, a 10-mm segment below the node containing the entire MEZ was used for investigating the effect of blue-light irradiation Frozen/thawed, hydrated segments were subjected to a loading (upward arrows) and unloading (downward arrows) cycle.…”
Section: Resultsmentioning
confidence: 99%
“…The mesocotyl elongation zone (MEZ) of dark‐grown maize seedlings represents a spatially defined stem section of less than 10 mm length directly below the coleoptilar node in which meristematic cells undergo rapid elongation without appreciable change in width. It has been reported that the cells in the upper 5‐mm portion of the MEZ elongate by 350% within 20 h (Yahalom et al 1987). This growth process can be drastically inhibited by red, far‐red and blue light (Vanderhoef and Briggs 1978 and older reports cited therein).…”
Section: Introductionmentioning
confidence: 99%
“…Exposure of etiolated seedlings to light brings about a cessation of cell divisions in the mesocotyl meristem (Iino, 1982;Yahalom et al, 1987). RNA gel blot analysis was used to examine the effect of light on SE-WAP41 mRNA expression levels in mesocotyls of etiolated maize seedlings.…”
Section: Se-wap41 Mrna Expression Levels Are Highest In Meristematic mentioning
confidence: 99%