Polar Movement of Gibberellic Acid through Young Coleus Petioles
نویسندگان
چکیده
منابع مشابه
Effect of gibberellic Acid on elongation and longevity of coleus petioles.
The effects of gibberellic acid on the longevity and elongation of variously aged, debladed petioles of Coleus blumei were studied, with particular reference to the hypotheses 1) that auxin increases longevity by increasing growth, and 2) that gibberellic acid acts by increasing the endogenous levels of auxin.Gibberellic acid, substituted for the leaf blades, significantly decreased longevity o...
متن کاملTransport of the Auxin, Picloram, Through and Coleus and Stem Sections of Petioles of Bean Pea
The transport of the synthetic auxin, picloram (4-amino-3,5,6-trichloropicolinic acid) was investigated in sections of petioles of Phaseolus vulgaris L. and Coleus blumei Benth. and stems of Pisum sativum L. Transport of 14C-picloram was basipolar in all tissues, although the degree of polarity was dependant on age. The velocity of picloram movement was calculated at between 0.75 and 1.11 mm/hr...
متن کاملThe Contrast between Active Transport and Diffusion of Indole-3-acetic Acid in Coleus Petioles.
IAA is famous for its polar movement through sections cut from shoots. It moves basipetally (from the "shoot" end to the "root" end of the section) with little effect of gravity. This same shoot-to-root polarity of IAA movement has recently been demonstrated through root sections, also (5, 12, 19). For more than 40 years the basipetal movement of auxin in shoots has been considered to be much f...
متن کاملModification of 2,4-dichlorophenoxyacetic Acid movement in bean petioles by light.
There have been several reports of light effe-cts on the movement of growth-regulating substances in plants. Shen-Miller and Gordon (6) found that phototropically active blue light decreased the basipetal movement of IAA in Zca coleoptile sections. Similarly, Thornton and Thimann (7) *observed that blue light induced a transient decrease in the basipetal movement of IAA in Avena coleoptile tiss...
متن کاملInteractions affecting gibberellic acid
The production of GA3 in solid-state culture was studied using systems composed of maize cob particles soaked in an amylaceous efluent, as a function of three variablesparticle diameter, volume of liquid phase, and substrate concentration-with a determinant influence on the response. The empirical model obtained provides an explanation of the behavior of the system in terms of a series of inter...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Plant Physiology
سال: 1970
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.45.4.539