Auxin Stimulates Cl−Uptake by Oat Coleoptiles
نویسندگان
چکیده
منابع مشابه
Phototropism and photoinhibition of basipolar transport of auxin in oat coleoptiles.
We have proposed that the lateral inequality of auxin associated with the phototropic response is a consequence of a light-induced impairment of basipolar transport of the hormone. If this is so, the dose-response curve for photoinhibition of auxin transport should resemble that for phototropism. Further, the wavelength dependencies of the transport and tropic response should also be similar. O...
متن کاملGravitational compensation and the phototropic response of oat coleoptiles.
Avena seedlings were germinated and grown while continuously rotated on the horizontal axis of a clinostat. The coleoptiles of these gravity-compensated plants were phototropically more responsive than those of plants rotated on a vertical axis. When the plants were compensated after unilateral irradiation, phototropic curvature of the shoot progressed for the next 6 hours, with the rate of cur...
متن کاملLight Dosage and Phototropic Responses of Corn and Oat Coleoptiles.
For a number of years, it has been assumed that the Bunsen-Roscoe reciprocity law is valid for phototropic curvature (21, 30). This law states that if light intensity and time of exposure are varied in such a way that the product of the two remains constant, the photochemical effect of the light should also remain constant (13). Thus it was thought that if plants were exposed to unilateral ligh...
متن کاملEvidence for amino Acid-h co-transport in oat coleoptiles.
Microelectrode and tracer techniques were used to test for possible amino acid-H(+) co-transport in coleoptiles of Avena sativa L. cv. "Garry." The amino acid analogue alpha-aminoisobutyric acid (AIB) caused transient depolarization of the membrane potential. The absolute magnitude of the maximum depolarization was affected by the same factors that affected AIB transport. Both increased with hi...
متن کاملGrowth, Auxin, and Tropisms in Decapitated Avena Coleoptiles.
With all the work on auxin appearing in the last years it is remarkable that not more investigations are concerned with the actual role of the auxins inside the plant. Barring some early opposition, the original statement "Without auxin no growth" (12) has stood unchallenged for many years. Probably this was so because all test methods were based on the principle of proportionality between auxi...
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: Annals of Botany
سال: 1998
ISSN: 0305-7364
DOI: 10.1006/anbo.1998.0686