scholarly journals Effects of Indoleacetic Acid on the Utilization of Acetate-1-C14 by Pea Stem Slices.

1958 ◽  
Vol 33 (2) ◽  
pp. 93-98 ◽  
Author(s):  
James F. Nance
Keyword(s):  
Indoleacetic Acid ◽  
Stem Slices

Disappearance of IAA in the presence of tissues of sunflowers infected by Plasmopara halstedii

1974 ◽  
Vol 52 (4) ◽  
pp. 861-866 ◽  
Author(s):  
Yigal Cohen ◽  
W. E. Sackston
Keyword(s):  
Indoleacetic Acid ◽  
Stem Elongation ◽  
Plasmopara Halstedii ◽  
Positive Correlation ◽  
Leaf Stage ◽  
Apical Buds ◽  
Leaf Tissues ◽  
Highly Correlated ◽  
Stem Slices

Stem elongation of sunflower plants inoculated at the two-leaf stage through apical buds with Plasmopara halstedii was greatly inhibited. Systemically infected plants did not show normal phototropic and negative-geotropic responses. There was a positive correlation between stunting of infected plants and ability of stem slices to remove indoleacetic acid (IAA) from test solutions. IAA disappearance in the presence of stem slices of infected plants was also highly correlated with area of mildew symptoms on leaves. Although IAA disappeared in the presence of all diseased tissues, leaf tissues were least active. No IAA disappeared in the presence of sporangia of the pathogen. These results explain reduced levels of IAA observed in mildew-infected sunflowers in earlier studies and may account for the characteristic stunting of systemically infected plants.

scholarly journals Preliminary Study on Pasta Samples Characterized in Antioxidant Compounds and Their Biological Activity on Kidney Cells

Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1131 ◽  
Author(s):  
Federico Di Marco ◽  
Francesco Trevisani ◽  
Pamela Vignolini ◽  
Silvia Urciuoli ◽  
Andrea Salonia ◽  
...  
Keyword(s):  
Indoleacetic Acid ◽  
Antioxidant Properties ◽  
Antioxidant Compounds ◽  
Kidney Cells ◽  
Hek 293 ◽  
293 Cells ◽  
High Concentrations ◽  
Β Carotene ◽  
Egg Pasta

Pasta is one of the basic foods of the Mediterranean diet and for this reason it was chosen for this study to evaluate its antioxidant properties. Three types of pasta were selected: buckwheat, rye and egg pasta. Qualitative–quantitative characterization analyses were carried out by HPLC-DAD to identify antioxidant compounds. The data showed the presence of carotenoids such as lutein and polyphenols such as indoleacetic acid, (carotenoids from 0.08 to 0.16 mg/100 g, polyphenols from 3.7 to 7.4 mg/100 g). To assess the effect of the detected metabolites, in vitro experimentation was carried out on kidney cells models: HEK-293 and MDCK. Standards of β-carotene, indoleacetic acid and caffeic acid, hydroalcoholic and carotenoid-enriched extracts from samples of pasta were tested in presence of antioxidant agent to determine viability variations. β-carotene and indoleacetic acid standards exerted a protective effect on HEK-293 cells while no effect was detected on MDCK. The concentrations tested are likely in the range of those reached in body after the consumption of a standard pasta meal. Carotenoid-enriched extracts and hydroalcoholic extracts showed different effects, observing rescues for rye pasta hydroalcoholic extract and buckwheat pasta carotenoid-enriched extract, while egg pasta showed milder dose depending effects assuming pro-oxidant behavior at high concentrations. The preliminary results suggest behaviors to be traced back to the whole phytocomplexes respect to single molecules and need further investigations.

Effect of Indoleacetic Acid in Inhibiting Stem Abscission in Mirabilis jalapa

1945 ◽  
Vol 106 (4) ◽  
pp. 420-431 ◽  
Author(s):  
J. M. Beal ◽  
A. Geraldine Whiting
Keyword(s):  
Indoleacetic Acid ◽  
Mirabilis Jalapa

Microbial and hydrolase activity after release of indoleacetic acid and ethylene–polyamine precursors by a model root surface

2011 ◽  
Vol 47 (2) ◽  
pp. 106-110 ◽  
Author(s):  
Giancarlo Renella ◽  
Loretta Landi ◽  
Jose M. Garcia Mina ◽  
Laura Giagnoni ◽  
Paolo Nannipieri
Keyword(s):  
Indoleacetic Acid ◽  
Root Surface ◽  
Hydrolase Activity

scholarly journals Effect of Manganese Toxicity on the Indoleacetic Acid Oxidase System of Cotton

1966 ◽  
Vol 41 (4) ◽  
pp. 718-724 ◽  
Author(s):  
Page W. Morgan ◽  
Howard E. Joham ◽  
J. V. Amin
Keyword(s):  
Indoleacetic Acid ◽  
Manganese Toxicity ◽  
Acid Oxidase ◽  
Oxidase System ◽  
Indoleacetic Acid Oxidase

Inhibition of cambial activity in Abies balsamea by internal water stress: role of abscisic acid

1975 ◽  
Vol 53 (24) ◽  
pp. 3041-3050 ◽  
Author(s):  
C. H. A. Little
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Indoleacetic Acid ◽  
Stomatal Closure ◽  
Abies Balsamea ◽  
Cambial Activity ◽  
Inhibitory Effect ◽  
Internal Water ◽  
Endogenous Aba

In experiments with attached and detached shoots of balsam fir, Abies balsamea L., synthetic (±)abscisic acid (ABA) (1) reduced photosynthesis and transpiration by inducing stomatal closure, (2) inhibited indoleacetic acid (IAA) - induced cambial activity in photosynthesizing and non-photosynthesizing shoots, and (3) inhibited the basipetal movement of [14C]IAA. Neither gibberellic acid nor kinetin counteracted the inhibitory effect of (±)ABA on IAA-induced cambial activity. In addition it was demonstrated that increasing the internal water stress increased the level of endogenous ABA in the phloem–cambial region of bark peelings and decreased the basipetal movement of [14C]IAA through branch sections. On the basis of these findings it is proposed that internal water stress inhibits cambial activity, partly through increasing the level of ABA; the ABA acts to decrease the provision of carbohydrates and auxin that are required for cambial growth.

Distribution of phytic acid and associated catabolic enzymes in soybean sprouts and indoleacetic acid promotion of Zn, Fe, and Ca bioavailability

2015 ◽  
Vol 24 (6) ◽  
pp. 2161-2167 ◽  
Author(s):  
Xinkun Wang ◽  
Runqiang Yang ◽  
Xiaolin Jin ◽  
Yulin Zhou ◽  
Yongbin Han ◽  
...  
Keyword(s):  
Phytic Acid ◽  
Indoleacetic Acid ◽  
Catabolic Enzymes ◽  
Soybean Sprouts
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