scholarly journals Cell Death Triggered by the YUCCA-like Bs3 Protein Coincides with Accumulation of Salicylic Acid and Pipecolic Acid But Not of Indole-3-Acetic Acid

2019 ◽  
Vol 180 (3) ◽  
pp. 1647-1659 ◽  
Author(s):  
Christina Krönauer ◽  
Joachim Kilian ◽  
Tina Strauß ◽  
Mark Stahl ◽  
Thomas Lahaye
Keyword(s):  
Cell Death ◽  
Acetic Acid ◽  
Salicylic Acid ◽  
Pipecolic Acid ◽  
Indole 3 Acetic Acid

scholarly journals Electro-Oxidation and Simultaneous Determination of Indole-3-Acetic Acid and Salicylic Acid on Graphene Hydrogel Modified Electrode

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5483 ◽  
Author(s):  
Xiaodong Cao ◽  
Xueting Zhu ◽  
Shudong He ◽  
Xuan Xu ◽  
Yongkang Ye
Keyword(s):  
Acetic Acid ◽  
Salicylic Acid ◽  
Modified Electrode ◽  
Limit Of Detection ◽  
Simultaneous Detection ◽  
Three Dimensional ◽  
Linear Sweep Voltammetry ◽  
Oxidation Reactions ◽  
Sensor Performance ◽  
Indole 3 Acetic Acid

A selective and sensitive electrochemical sensor was developed for simultaneous detection of phytohormones indole-3-acetic acid (IAA) and salicylic acid (SA). The sensing interface was fabricated on a porous, three-dimensional networked graphene hydrogel (GH) modified glassy carbon electrode (GCE). The electrocatalytic behavior of IAA and SA on the surface of the modified electrode (GH/GCE) was investigated by cyclic voltammetry and linear sweep voltammetry. Results show that the oxidation reactions of IAA and SA occur at different potentials, which enable their simultaneous detection at the sensing interface. Under optimal conditions, the GH/GCE exhibited good selectivity and stability and its response, unaffected by various interferents, was linear in the range of 4 to 200 μM of IAA and SA. The limit of detection (S/N = 3) achieved were 1.42 μM for IAA and 2.80 μM for SA. The sensor performance was validated by measuring for IAA and SA in real vegetable samples with satisfactory results.

Gold nanoparticle-doped three-dimensional reduced graphene hydrogel modified electrodes for amperometric determination of indole-3-acetic acid and salicylic acid

Nanoscale ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 10247-10256 ◽  
Author(s):  
Xiaodong Cao ◽  
Xueting Zhu ◽  
Shudong He ◽  
Xuan Xu ◽  
Yongkang Ye ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Salicylic Acid ◽  
Gold Nanoparticle ◽  
Three Dimensional ◽  
Modified Electrodes ◽  
Amperometric Determination ◽  
Reduced Graphene ◽  
Indole 3 Acetic Acid

Three-dimensional (3D) networked nanomaterials have attracted great interest because of their unique porous and 3D-networked structures.

Electrochemical mapping of indole-3-acetic acid and salicylic acid in whole pea seedlings under normal conditions and salinity

2018 ◽  
Vol 276 ◽  
pp. 545-551 ◽  
Author(s):  
Li-Jun Sun ◽  
Jia-Jing Zhou ◽  
Jin-Lin Pan ◽  
Yun-Yun Liang ◽  
Zi-Jun Fang ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Salicylic Acid ◽  
Pea Seedlings ◽  
Indole 3 Acetic Acid

scholarly journals A multifunctional ratiometric electrochemical sensor for combined determination of indole-3-acetic acid and salicylic acid

RSC Advances ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 3115-3121 ◽  
Author(s):  
Ye Hu ◽  
Xiaodong Wang ◽  
Cheng Wang ◽  
Peichen Hou ◽  
Hongtu Dong ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Salicylic Acid ◽  
Electrochemical Sensor ◽  
First Time ◽  
Indole 3 Acetic Acid

For the first time, a multifunctional ratiometric electrochemical sensor was developed for quantifying IAA and SA simultaneously.

scholarly journals The production of auxin by dying cells

2021 ◽  
Author(s):  
A Rupert Sheldrake
Keyword(s):  
Cell Death ◽  
Organic Matter ◽  
Acetic Acid ◽  
Vascular Plants ◽  
Hydrolytic Enzymes ◽  
Living Cells ◽  
Tracheary Elements ◽  
Auxin Production ◽  
Dying Cells ◽  
Indole 3 Acetic Acid

Abstract In this review, I discuss the possibility that dying cells produce much of the auxin in vascular plants. The natural auxin, indole-3-acetic acid (IAA), is derived from tryptophan by a two-step pathway via indole pyruvic acid. The first enzymes in the pathway, tryptophan aminotransferases, have a low affinity for tryptophan and break it down only when tryptophan levels rise far above normal intracellular concentrations. Such increases occur when tryptophan is released from proteins by hydrolytic enzymes as cells autolyse and die. Many sites of auxin production are in and around dying cells: in differentiating tracheary elements; in root cap cells; in nutritive tissues that break down in developing flowers and seeds; in senescent leaves; and in wounds. Living cells also produce auxin, such as those transformed genetically by the crown gall pathogen. IAA may first have served as an exogenous indicator of the presence of nutrient-rich decomposing organic matter, stimulating the production of rhizoids in bryophytes. As cell death was internalized in bryophytes and in vascular plants, IAA may have taken on a new role as an endogenous hormone.

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