Red Light and the Geotropic Response of the Avena Coleoptile.
نویسنده
چکیده
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منابع مشابه
Geotropic Response of Coleoptiles under Anaerobic Conditions ' Malcolm B . Wilkins
It has been reported recently that coleoptiles of Zea mays develop a geotropic response under anaerobic conditions (2). The geotropic response of a coleoptile arises from the differential growth of the upper and lower halves of the organ. At least 3 independent investigations have shown that in Avena sativa coleoptiles growth is totally arrested in the absence of 02 (1,6, 9). It is therefore di...
متن کاملGeotropic Response of Coleoptiles under Anaerobic Conditions ' Malcolm B
It has been reported recently that coleoptiles of Zea mays develop a geotropic response under anaerobic conditions (2). The geotropic response of a coleoptile arises from the differential growth of the upper and lower halves of the organ. At least 3 independent investigations have shown that in Avena sativa coleoptiles growth is totally arrested in the absence of 02 (1,6, 9). It is therefore di...
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Light-induced coleoptile stimulation and mesocotyl suppression in etiolated Avena sativa (cv. Lodi) has been quantitated. Etiolated seedlings showed the greatest response to light when they were illuminated 48 to 56 hours after imbibition. Two low-irradiance photoresponses for each tissue have been described. Red light was 10 times more effective than green and 1,000 times more effective than f...
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The far-red reversibility of the phytochrome-controlled stimulation of elongation of coleoptile sections by low fluence red light has been characterized in subapical coleoptile sections from dark-grown Avena sativa L., cv Lodi seedlings. The fluence dependence of the far-red reversal was the same whether or not the very low fluence response is also expressed. The capacity of far-red light to re...
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Apical segments of etiolated oat (Avena sativa L. cv. Victory) coleoptiles showed enhanced uptake of [(86)Rb(+)] when tested 30 minutes after a 5-minute red irradiation. The response was partly reversible by far red light. Uptake was sensitive to carbonyl cyanide m-chlorophenyl hydrazone, but not to isotonic mannitol. Indoleacetic acid (10(-7) molar) caused a very pronounced and rapid stimulati...
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عنوان ژورنال:
- Plant physiology
دوره 40 1 شماره
صفحات -
تاریخ انتشار 1965