The Role of Basipetal Auxin Transport in the Positional Control of Abscission Sites Induced in Impatiens sultani Stem Explants

1988 ◽  
Vol 62 (5) ◽  
pp. 487-495 ◽  
Author(s):  
J. WARREN WILSON ◽  
E. S. WALKER ◽  
P. M. WARREN WILSON
Keyword(s):  
Auxin Transport ◽  
Stem Explants ◽  
Impatiens Sultani ◽  
Basipetal Auxin Transport ◽  
Positional Control

Role of basipetal auxin transport and lateral auxin movement in rooting and growth of etiolated lupin hypocotyls

2004 ◽  
Vol 121 (2) ◽  
pp. 294-304 ◽  
Author(s):  
Juana Ines Lopez Nicolas ◽  
Manuel Acosta ◽  
Jose Sanchez-Bravo
Keyword(s):  
Auxin Transport ◽  
Basipetal Auxin Transport

scholarly journals Role of Growth Regulators on In Vitro Callus Induction and Direct Regeneration in Physalis minima Linn

2015 ◽  
Vol 44 ◽  
pp. 38-44 ◽  
Author(s):  
H. Sandhya ◽  
Rao Srinath
Keyword(s):  
Acetic Acid ◽  
Growth Regulators ◽  
Callus Induction ◽  
Basal Medium ◽  
Direct Regeneration ◽  
Naphthalene Acetic Acid ◽  
Stem Explants ◽  
Dichlorophenoxy Acetic Acid ◽  
Indole 3 Acetic Acid

Suitable protocol for induction of callus and regeneration was developed from different explants viz., node, stem and leaves in Physalis minima. MS basal medium supplemented with various concentrations (1.0-4.0mg/l) of auxins like 2,4-Dichlorophenoxy acetic acid (2,4-D), α-naphthalene acetic acid (NAA) and Indole-3-acetic acid (IAA) and cytokinins (0.5-1.5mg/l) like BAP or Kn were used. All the three explants responded for induction of callus, however stem explants were found superior, followed by node and leaf. Callus induction was observed in all the auxins and combination of growth regulators used with varied mass (2010±1.10) and highest percentage of callus induction was observed from stem at 2.0mg/l 2,4-D (90%) followed by NAA (70%) and IAA (50%). Organogenesis was induced when nodal explants were transferred on MS medium supplemented with 2,4-D and Kn at various concentrations, maximum being on 2.0mg/l 2,4-D + 1.0mg/l Kn (90%). Regenerated shoots were elongated on 0.5mg/l GA3. The shoots were subsequently rooted on MS + 1.0mg/l IBA (95%) medium. Rooted shoots were hardened and acclimatized, later they were transferred to polycups containing soil, cocopeat and sand in the ratio 1:2:1.Keywords:Physalis minima, Node, Stem, Leaf, callus and growth regulators.

AUXIN TRANSPORT AND STEM GROWTH IN TULIPS: THE ROLE OF EPIDERMIS, CORTEX AND PITH

2005 ◽  
pp. 199-205
Author(s):  
M. Saniewski ◽  
J. Ueda ◽  
K. Miyamoto ◽  
H. Okubo
Keyword(s):  
Auxin Transport ◽  
Stem Growth

The role of augmented reality in robotics

2020 ◽  
Vol 47 (6) ◽  
pp. 789-794
Author(s):  
Robert Bogue
Keyword(s):  
Augmented Reality ◽  
Design Methodology ◽  
Haptic Feedback ◽  
Historical Background ◽  
Content Type ◽  
Virtual Fixtures ◽  
Research Activities ◽  
Insight Into ◽  
Positional Control

Purpose The purpose of this paper is to provide an insight into how augmented reality (AR) technologies are being applied to robotics. Design/methodology/approach Following an introduction and a brief historical background to AR, this first provides examples of AR applications in robot programming. It then gives examples of recent research into AR-based robot teleoperation. Research activities involving the virtual fixtures (VF) technique are then discussed and finally, brief conclusions are drawn. Findings Because AR concepts were first investigated in the 1990s, applications involving robotics have been widely studied. Programming with the aid of AR devices, such as the HoloLens headset, can be simplified and AR methods, including the VF technique, can improve the accuracy and speed of teleoperation, manipulation and positional control tasks. They can also provide visual or haptic feedback which leads to more intuitive operation and significantly reduces the cognitive load on the operator. Originality/value This provides an insight into the growing role of AR in robotics by providing examples of recent research in a range of applications.

scholarly journals N-glycan containing a core α1,3-fucose residue is required for basipetal auxin transport and gravitropic response in rice (Oryza sativa )

2016 ◽  
Vol 212 (1) ◽  
pp. 108-122 ◽  
Author(s):  
Rikno Harmoko ◽  
Jae Yong Yoo ◽  
Ki Seong Ko ◽  
Nirmal Kumar Ramasamy ◽  
Bo Young Hwang ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Auxin Transport ◽  
Gravitropic Response ◽  
Fucose Residue ◽  
Basipetal Auxin Transport

scholarly journals Both Induction and Morphogenesis of Cyst Nematode Feeding Cells Are Mediated by Auxin

2000 ◽  
Vol 13 (10) ◽  
pp. 1121-1129 ◽  
Author(s):  
Aska Goverse ◽  
Hein Overmars ◽  
Jan Engelbertink ◽  
Arjen Schots ◽  
Jaap Bakker ◽  
...  
Keyword(s):  
Root Formation ◽  
Auxin Transport ◽  
Infection Site ◽  
Cell Morphogenesis ◽  
Cell Wall Degrading Enzymes ◽  
Cyst Nematodes ◽  
Site Specific ◽  
Auxin Concentration ◽  
Local Accumulation

Various lines of evidence show that local changes in the auxin concentration are involved in the initiation and directional expansion of syncytia induced by cyst nematodes. Analysis of nematode infections on auxin-insensitive tomato and Arabidopsis mutants revealed various phenotypes ranging from complete inhibition of syncytium development to a decrease in hypertrophy and lateral root formation at the infection site. Specific activation of an auxin-responsive promoter confirmed the role of auxin and pointed at a local accumulation of auxin in developing syncytia. Disturbance of auxin gradients by inhibiting polar auxin transport with N-(1-naphthyl)phtalamic acid (NPA) resulted in abnormal feeding cells, which were characterized by extreme galling, massive disordered cell divisions in the cortex, and absence of radial expansion of the syncytium initial toward the vascular bundle. The role of auxin gradients in guiding feeding cell morphogenesis and the cross-talk between auxin and ethylene resulting in a local activation of cell wall degrading enzymes are discussed.

scholarly journals Ethylene Does Not Promote Adventitious Root Initiation on Apple Microcuttings

1996 ◽  
Vol 121 (5) ◽  
pp. 880-885 ◽  
Author(s):  
James F. Harbage ◽  
Dennis P. Stimart
Keyword(s):  
Carboxylic Acid ◽  
Auxin Transport ◽  
Adventitious Rooting ◽  
Polar Auxin Transport ◽  
Root Initiation ◽  
Ethylene Evolution ◽  
Basal Section ◽  
Naphthylphthalamic Acid ◽  
Transport Inhibitors

We investigated the role of ethylene on adventitious rooting of `Gala' (easy-to-root) and `Triple Red Delicious' (difficult-to-root) apple (Malus domestica Borkh.) microcuttings. Root count increased significantly as IBA level increased, with highest root counts on `Gala'. Ethylene evolution increased significantly with IBA level without significant differences between cultivars. Basal section removal of microcuttings in the area of root origin reduced root count without changing ethylene evolution. Ethylene treatment of proliferated shoots before microcutting excision failed to enhance rooting. IBA-induced ethylene evolution was eliminated nearly by AVG, but root count remained IBA dependent. ACC reversed IBA plus AVG rooting inhibition, but ACC alone failed to influence root count. Polar auxin transport inhibitors NPA and TIBA stimulated ethylene evolution without increasing root count. Adventitious rooting of apple microcuttings was not associated with ethylene. Chemical names used: 1-H-indole-3-butyric acid (IBA); aminoethoxyvinylglycine (AVG); 1-aminocyclopropane-1-carboxylic acid (ACC); 2,3,5-triiodobenzoic acid (TIBA); N-1-naphthylphthalamic acid (NPA).

Sign in / Sign up

Export Citation Format

Share Document