Various Conditions of Illumination and Ethylene Evolution

1993 ◽  
pp. 347-352
Author(s):  
V. I. Kefeli ◽  
T. Y. A. Rakitina ◽  
P. V. Vlasov ◽  
F. Jalilova ◽  
A. E. Kalevich
Keyword(s):  
Ethylene Evolution

Chromium-induced inhibition of ethylene evolution in bean (Phaseolus vulgaris) leaves

1993 ◽  
Vol 89 (2) ◽  
pp. 404-408
Author(s):  
Charlotte Poschenrieder ◽  
Benito Gunse ◽  
Juan Barcelo
Keyword(s):  
Phaseolus Vulgaris ◽  
Ethylene Evolution

scholarly journals Observation of Climacteric-Like Behavior of Citrus Leaves Using Fluorescence Spectroscopy

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Caio B. Wetterich ◽  
Emery C. Lins ◽  
José Belasque ◽  
Luis G. Marcassa
Keyword(s):  
Chlorophyll Fluorescence ◽  
Sample Preparation ◽  
Fluorescence Spectroscopy ◽  
Time Evolution ◽  
Diagnostic Technique ◽  
Ethylene Evolution ◽  
Complex Sample ◽  
Citrus Leaves

Observation of climacteric-like behavior in citrus leaves depends on the detection of ethylene. However, such detection requires a gas chromatographer and complex sample preparation procedures. In this work, fluorescence spectroscopy was investigated as a diagnostic technique for climacteric-like behavior in citrus leaves. Our results indicate that the chlorophyll fluorescence presents a time evolution consistent with the ethylene evolution. Therefore, fluorescence spectroscopy may be used to observe the climacteric-like behavior in citrus leaves.

scholarly journals Daminozide, Root Pruning, Trunk Scoring, and Trunk Ringing Effects on Fruit Ripening and Storage Behavior of `McIntosh' Apple

1991 ◽  
Vol 116 (2) ◽  
pp. 195-200 ◽  
Author(s):  
D.C. Elfving ◽  
E.C. Lougheed ◽  
R.A. Cline
Keyword(s):  
Ethylene Production ◽  
Fruit Size ◽  
Soluble Solids ◽  
Starch Hydrolysis ◽  
Root Pruning ◽  
Full Bloom ◽  
Ethylene Evolution ◽  
Flesh Firmness ◽  
Solids Concentration ◽  
Storage Behavior

A midsummer foliar daminozide (DZ) application (750 mg a.i./liter) to `Macspur McIntosh'/M.7 apple trees (Malus domestics Borkh.) reduced preharvest drop and retarded flesh firmness loss and starch hydrolysis when tested at harvest; DZ also reduced fruit ethylene production at harvest and after 19 weeks of storage at 0.5C. Root pruning at full bloom (May) resulted in increased soluble solids concentration (SSC) and firmer flesh and less starch hydrolysis at harvest, but not consistently each year. Full-bloom root pruning reduced the incidence of stem-cavity browning and brown core, but again not each year. Full-bloom root pruning did not influence ethylene evolution at harvest but did reduce post-storage ethylene evolution in two of three seasons. Full-bloom root pruning generally was less effective than DZ in altering fruit behavior, while root pruning later than full bloom had virtually no effect. Trunk scoring or ringing increased SSC and retarded loss of flesh firmness before harvest and following storage, but had little effect on starch hydrolysis. Scoring or ringing decreased incidence of some disorders and reduced post-storage ethylene evolution, although these treatments had little effect on ethylene production at harvest. Trunk scoring influenced some fruit characteristics more strongly than DZ. Fruit size was not affected by any treatment in any year. Chemical name used: butanedioic acid mono (2,2 -dimethylhydrazide) (daminozide).

RELATIONSHIP BETWEEN ETHYLENE EVOLUTION AND LEAF ABSCISSION

1965 ◽  
Author(s):  
Bernard Rubinstein ◽  
F. B. Abeles
Keyword(s):  
Leaf Abscission ◽  
Ethylene Evolution

Effect of Mannose on Ethylene Evolution and Ripening of Pear Fruit

Ethylene ◽  
1984 ◽  
pp. 333-333 ◽  
Author(s):  
Chris B. Watkins ◽  
Chaim Frenkel
Keyword(s):  
Pear Fruit ◽  
Ethylene Evolution

Leaf area development of ABA-deficient and wild-type peas at two levels of nitrogen supply

2003 ◽  
Vol 30 (7) ◽  
pp. 777 ◽  
Author(s):  
Ian C. Dodd
Keyword(s):  
Growth Response ◽  
Leaf Growth ◽  
Nitrogen Supply ◽  
Genotypic Differences ◽  
Wild Type ◽  
Ethylene Evolution ◽  
Relative Water ◽  
Ca 50 ◽  
Area Development ◽  
Water Contents

The ABA-deficient wilty pea (Pisum sativum L.) and its wild-type (WT) were grown at two levels of nitrogen supply (0.5 and 5.0 mM) for 5–6 weeks from sowing, to determine whether leaf ABA status altered the leaf growth response to N deprivation. Plants were grown at high relative humidity to prevent wilting of the wilty peas. Irrespective of N supply, expanding wilty leaflets had ca 50% less ABA than WT leaflets but similar ethylene evolution rates. Fully expanded wilty leaflets had lower relative water contents (RWC) and were 10–60% smaller in area (according to the node of measurement) than WT leaflets. However, there were no genotypic differences in plant relative leaf expansion rate (RLER). Growth of both genotypes at 0.5 mM N increased the RWC of fully expanded leaflets, but did not alter ethylene evolution or ABA concentration of expanding leaflets. Plants grown at 0.5 mM N showed a 20–30% reduction in RLER, which was similar in magnitude in both wilty and WT peas. Thus,�leaf ABA status did not alter the leaf growth response to N deprivation.

Do low-ethylene-producing transgenic canola (Brassica napus) plants expressing the ACC deaminase gene differ from wild-type plants in response to UVB radiation?

2007 ◽  
Vol 85 (2) ◽  
pp. 148-159 ◽  
Author(s):  
Mirwais M. Qaderi ◽  
M. Anisul Islam ◽  
David M. Reid ◽  
Saleh Shah
Keyword(s):  
Brassica Napus ◽  
Transgenic Plants ◽  
Photosynthetic Pigment ◽  
Physiological Parameters ◽  
Ultraviolet B ◽  
Differential Sensitivity ◽  
Plant Responses ◽  
Uvb Radiation ◽  
Wild Type ◽  
Ethylene Evolution

Few studies have considered ethylene involvement in plant responses to ultraviolet-B (UVB) radiation. We studied the responses to UVB radiation of one wild-type (WT, ‘Westar’) canola (Brassica napus L.) with normal ethylene evolution and two transgenic (C1, C2) lines with lower ethylene evolution. Canola plants were grown under biologically effective levels of UVB (UVBBE) radiation: 0.03 (low), 4.88 (medium), and 9.78 (high) kJ·m–2·d–1 in controlled-environment growth chambers. The growth and physiological parameters of the plants were measured. Of the two transgenic lines, C1 demonstrated higher ethylene evolution than C2 but lower than WT. The lowest aboveground and belowground biomass was found with exposure to high UVB radiation. WT produced more biomass than C2. Net CO2 assimilation and transpiration did not vary among plant lines or UVB treatments. Water-use efficiency was lower under high UVB radiation than under low UVB. The quantum yield of photosystem II was higher for C2 than for either WT or C1. WT did not differ from transgenic plants in respect to photosynthetic pigments and UV-screening compounds. Photosynthetic pigment concentration decreased, but concentration of UV-screening compounds, thickness of epicuticular wax, and the rate of root hydraulic conductance were increased by exposure to UVB radiation. While there appears to be a lack of ethylene involvement in some of the measured physiological parameters, the transgenic plants exhibited differential sensitivity to UVB in a few key measured parameters.

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