Study of ethylene kinetics during and after germination of sugar beet (Beta vulgarisL.) seeds and fruits

2013 ◽  
Vol 23 (3) ◽  
pp. 205-210 ◽  
Author(s):  
Willem Abts ◽  
Carolien Vissers ◽  
Bert Vandenbussche ◽  
Maurice M.P. De Proft
Keyword(s):  
Sugar Beet ◽  
Ethylene Production ◽  
Isobutyric Acid ◽  
Time Span ◽  
Aminooxyacetic Acid ◽  
Silver Thiosulphate ◽  
True Seed ◽  
Radicle Emergence ◽  
Amino Isobutyric Acid ◽  
Seeds And Fruits

AbstractThe interaction between ethylene production and seed germination of sugar beet (Beta vulgarisL.) was studied. For intact fruits, deoperculated fruits and true seeds, ethylene was only produced after the start of radicle emergence. Removal of the operculum or the whole pericarp, likely allowing better water uptake and gas exchange by the true seed, actually increased the time span between the start of radicle emergence and the beginning of ethylene production compared to intact fruits. ACC (1-aminocyclopropane-1-carboxylic acid), AOA (aminooxyacetic acid), AIB (2-amino isobutyric acid) and STS (silver thiosulphate) in the imbibition medium did not influence the germination pattern. Based on these findings, the function of ethylene during the germination of sugar beet is uncertain.

Somatostatin inhibits insulin-stimulated amino acid uptake into cultured rat myoblasts

1987 ◽  
Vol 114 (4) ◽  
pp. 470-474 ◽  
Author(s):  
G. S. G. Spencer ◽  
D. J. Hill ◽  
G. J. Garssen ◽  
J. P. G. Williams
Keyword(s):  
Amino Acid ◽  
Nutrient Uptake ◽  
Monolayer Culture ◽  
Amino Acid Uptake ◽  
Inhibitory Effect ◽  
Isobutyric Acid ◽  
Acid Uptake ◽  
Newborn Rat ◽  
Amino Isobutyric Acid

Abstract. The effects of somatostatin on the acute metabolic actions of insulin on newborn rat myoblasts in culture has been examined during monolayer culture. Somatostatin significantly inhibited the insulin-stimulated uptake of [3H]leucine and [3H]amino-isobutyric acid into myoblasts but had no effect on basal (unstimulated) uptake of these two substances. The lowest concentration of somatostatin to have a significant effect was 10 μg/l, and this was apparent in all the experiments undertaken. The inhibitory effect of somatostatin was seen at all effective concentrations of insulin used (0.3–1 U/l). These findings lend support to the concept of an endocrine role for somatostatin in vivo and suggest that a peripheral antagonism may exist between circulating insulin and somatostatin on anabolic processes such as nutrient uptake into cells.

Determination of Beta-Amino-Isobutyric Acid in Urine and Serum using Pre-Column Derivatization Technique

1992 ◽  
Vol 15 (8) ◽  
pp. 1351-1360 ◽  
Author(s):  
B. L. Lee ◽  
S. C. Chua ◽  
H. Y. Ong ◽  
H. P. Lee ◽  
C. N. Ong
Keyword(s):  
Isobutyric Acid ◽  
Amino Isobutyric Acid ◽  
Urine And Serum

Ampicillinuria and Ampicillin Crystalluria

PEDIATRICS ◽  
1971 ◽  
Vol 48 (4) ◽  
pp. 636-639
Author(s):  
Joseph L. Potter ◽  
Arthur G. Weinberg ◽  
Raymond West
Keyword(s):  
Amino Acids ◽  
False Positive ◽  
Isobutyric Acid ◽  
Urinary Amino Acids ◽  
Amino Isobutyric Acid ◽  
Urinary Amino

Four patients with ampicillinuria and ampicillin crystalluria have been reported. The presence of ampicillin leads to false positive spots for leucine/isoleucine, phenylalanine, and β-amino isobutyric acid in paper chromatograms of the urinary amino acids, and to a false-positive spot for phenylalanine in paper electrophoretograms. Crystalluria, due to ampicillin, is also described. Its significance remains to be determined.

Temperature Modifications during Storage to Overcome Weak Neck Disorder in Banana (cv. Rasthali) using α- Amino Isobutyric Acid

2018 ◽  
Vol 105 (Special Issue) ◽  
Author(s):  
V. Rajeswari ◽  
P. Jeyakumar ◽  
M. K. Kalarani ◽  
K. S. Subramanian ◽  
M. Kavino
Keyword(s):  
Isobutyric Acid ◽  
Amino Isobutyric Acid

EFFECTS OF OESTRADIOL ON WATER UPTAKE AND α-AMINOISOBUTYRIC ACID ACCUMULATION BY UTERI OF HEPATECTOMIZED RATS

1963 ◽  
Vol 28 (1) ◽  
pp. 73-78 ◽  
Author(s):  
J. R. DANIELS ◽  
S. M. KALMAN
Keyword(s):  
Inferior Vena ◽  
Vena Cava ◽  
Early Response ◽  
Isobutyric Acid ◽  
Acid Accumulation ◽  
One Step ◽  
Long Evans ◽  
Amino Isobutyric Acid

SUMMARY Adult Long Evans rats were ovariectomized and, one month later, were subjected to partial hepatectomy. Immature Long Evans rats were either partially hepatectomized in one step, or complete hepatectomy was accomplished by a two-stage operation which included ligation of the inferior vena cava followed by a partial evisceration. The response of these animals to injected oestradiol was compared with that of sham-operated controls by observing uptake of water by the uterus in vivo, and also by estimating the ability of surviving uterine fragments to accumulate radioactive α-amino-isobutyric acid in vitro. It was found that partial or complete hepatectomy did not abolish the response of the uterus to oestradiol. These results seem to exclude an essential role for the liver in the early response of a target organ to an oestrogenic hormone.

Corrigendum to: Auxin is required for pollination-induced ovary growth in Dendrobium orchids

2006 ◽  
Vol 33 (10) ◽  
pp. 981 ◽  
Author(s):  
Saichol Ketsa ◽  
Apinya Wisutiamonkul ◽  
Wouter G. van Doorn
Keyword(s):  
Auxin Transport ◽  
Isobutyric Acid ◽  
Signalling Pathway ◽  
Aminooxyacetic Acid ◽  
Ethylene Synthesis ◽  
Transport Inhibitor ◽  
Auxin Signalling ◽  
Auxin Transport Inhibitor ◽  
Ethylene Action ◽  
Ovary Growth

In Dendrobium and other orchids the ovule becomes mature long after pollination, whereas the ovary starts growing within two days of pollination. The signalling pathway that induces rapid ovary growth after pollination has remained elusive. We placed the auxin antagonist �-(p-chlorophenoxy) isobutyric acid (PCIB) or the auxin transport inhibitor 2,3,5-triiodobenzoic acid (TIBA) on the stigma, before pollination. Both treatments nullified pollination-induced ovary growth. The ovaries also did not grow after similar stigma treatment with 1-methylcyclopropene (1-MCP), AgNO3 (both inhibitors of ethylene action), aminooxyacetic acid (AOA) or CoCl2 (which both inhibit ethylene synthesis), before pollination. Pollination could be replaced by placement of the auxin naphthylacetic acid (NAA) on the stigma. All mentioned inhibitors nullified the effect of NAA, indicating that if auxin is the initiator of ovary growth, it acts through ethylene. The results suggest that the pollination effect on ovary growth requires auxin (at least auxin transport and maybe also auxin signalling), and both ethylene synthesis and ethylene action.

Ethylene production and post-pollination development in Dendrobium flowers treated with foreign pollen

2001 ◽  
Vol 28 (5) ◽  
pp. 409 ◽  
Author(s):  
Saichol Ketsa ◽  
Kanokporn Bunya-atichart ◽  
Wouter G. van Doorn
Keyword(s):  
Carboxylic Acid ◽  
Ethylene Production ◽  
Acc Synthase ◽  
Aminooxyacetic Acid ◽  
Foreign Pollen ◽  
Incompatible Pollen ◽  
Ovary Growth

Dendrobium ‘Pompadour’ flowers fade early following pollination. This is associated with increased ethylene production and early epinasty. These effects are also produced by application of 1-aminocyclopropane-1-carboxylic acid (ACC) on the stigma. Pollen (one anther each) from Ruellia tuberosa L. (Acanthaceae) and Caesalpinia pulcherrima (L.) Sw. (Fabaceae) also increased ethylene production and caused early epinasty and fading. Pollen of Hibiscus schizopetalus (Mast.) Hook.f. (Malvaceae), in contrast, had no effect. R. tuberosa pollen increased ACC concentration and ACC synthase activity of the orchid flowers. Aminooxyacetic acid (AOA) pretreatment prior to R. tuberosa pollination prevented early fading, epinasty and the increase in ethylene production. It also prevented the increase in ACC concentration, and ACC synthase activity. Ovary growth was stimulated by Dendrobium ‘Pompadour’ pollinia, not by any of the incompatible pollen. Applied ACC did not promote ovary growth. It is concluded that incompatible pollen can hasten senescence and epinasty by increasing ACC synthase activity and ethylene production. Ovary growth, in contrast, is apparently not primarily regulated by ethylene.

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