Lateral redistribution of auxin is not the means for gravitropic differential growth of coleoptiles: A new model

Physiologia Plantarum
H G Edelmann

Abstract

Gravicurvature in water- and auxin (IAA)-incubated coleoptiles of rye (Secale cereale L.) is similar, despite a general strongly enhancing effect of exogenous IAA on the overall (cell) elongation of these organs. Longitudinally split coleoptiles or isolated longitudinally halved coleoptiles (horizontally positioned as upper or lower halves) respond gravitropically in the same way as water-incubated intact coleoptiles, irrespective of whether the halves are incubated in distilled water or IAA. A new model for the principal mechanism of regulation of gravitropic growth is proposed which depends on, yet does not involve, the redistribution of IAA as the means for gravistimulated differential growth, as postulated by the Cholodny-Went hypothesis (CWH). It is based on a gravimediated temporarily restrained infiltration of IAA-induced wall-loosening factors into the growth-limiting outer epidermal walls of the concave organ flank.

References

Jul 15, 1998·Plant Physiology·B StankovicF D Sack
Dec 8, 1998·The EMBO Journal·A MüllerK Palme
Sep 11, 1999·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·A C HollowayJ F Leatherland
Oct 16, 1999·Proceedings of the National Academy of Sciences of the United States of America·K PhilipparR Hedrich
Jun 27, 1996·Journal of Biotechnology·D Volkmann, M Tewinkel
Jan 1, 1988·Plant Physiology·F B SalisburyP Rorabaugh
Jan 1, 1989·Plant Physiology·M A Harrison, B G Pickard
Sep 7, 2001·Planta·M H Weisenseel, A J Meyer
Jan 6, 1989·Science·B A McClure, T Guilfoyle
Sep 7, 2001·Plant Physiology·R ChenP H Masson
Sep 7, 2001·Botanica Acta : Berichte Der Deutschen Botanischen Gesellschaft = Journal of the German Botanical Society·H G Edelmann, O Samajova
Mar 1, 1964·Plant Physiology·M H Goldsmith, M B Wilkins
Jul 1, 1992·Plant Physiology·S Hoffmann-Benning, H Kende
Nov 20, 1936·The Journal of General Physiology·J Van Overbeek

❮ Previous
Next ❯

Citations

Oct 2, 2007·Journal of Plant Physiology·U Kutschera, K J Niklas
Feb 6, 2008·Physiologia Plantarum·Toshimitsu IkushimaTeruo Shimmen
Jun 13, 2002·Physiologia Plantarum·Gérald PerbalDominique Driss-Ecole
Mar 25, 2020·International Journal of Molecular Sciences·Eugeniusz MałkowskiPaulina Zieleźnik-Rusinowska
Dec 1, 2001·The New Phytologist·Jonathan D B Weyers, Neil W Paterson

❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

© 2021 Meta ULC. All rights reserved