Lipid polymers accumulate in the epidermis and mestome sheath cell walls during low temperature development of winter rye leaves

PROTOPLASMA ◽  
1985 ◽  
Vol 125 (1-2) ◽  
pp. 53-64 ◽  
Author(s):  
Marilyn Griffith ◽  
N. P. A. Huner ◽  
K. E. Espelie ◽  
P. E. Kolattukudy
Keyword(s):  
Low Temperature ◽  
Cell Walls ◽  
Winter Rye ◽  
Sheath Cell ◽  
Mestome Sheath ◽  
Temperature Development

Water Pathways in Wheat Leaves. IV. The Interpretation of Images of a Fluorescent Apoplastic Tracer

1988 ◽  
Vol 15 (4) ◽  
pp. 541 ◽  
Author(s):  
MJ Canny
Keyword(s):  
Cell Walls ◽  
Water Movement ◽  
Freeze Substitution ◽  
Sheath Cell ◽  
High Concentration ◽  
Mestome Sheath ◽  
Wheat Leaves ◽  
Apoplastic Tracer ◽  
Very High ◽  
Wall Components

Sections of wheat leaves fed with the fluorescent apoplastic tracer sulforhodamine G (SR) through the xylem were prepared by freeze-substitution and resin embedding. The distribution of fluorescence intensity (FI) of the tracer was measured by microspectrofluorometry at a resolution of 0.4 �m. SR was found to move within cell walls in restricted paths less than 200 nm wide. The name 'nanopaths' is suggested for these. The highest FI was found around the mestome-sheath / parenchyma-sheath border on the xylem side, and was shown to be due, not to binding of the tracer to wall components, but to the generation of a very high concentration of SR there by the separation of water from the solute. This separation cannot be evaporative but must be osmotic, and is presented as evidence of a major symplastic water movement starting at the parenchyma sheath cell membrane. The main resistance to water loss from the veins is at the mestome sheath and appears to be controlled by the suberised lamellae.

scholarly journals Low Temperature Development of Winter Rye Leaves Alters the Detergent Solubilization of Thylakoid Membranes

1986 ◽  
Vol 81 (2) ◽  
pp. 471-477 ◽  
Author(s):  
Marilyn Griffith ◽  
Norman P. A. Huner ◽  
Donald B. Hayden
Keyword(s):  
Low Temperature ◽  
Thylakoid Membranes ◽  
Winter Rye ◽  
Detergent Solubilization ◽  
Temperature Development

Alterations in cell walls of winter wheat roots during low temperature acclimation

1998 ◽  
Vol 152 (4-5) ◽  
pp. 473-479 ◽  
Author(s):  
Alexey I. Zabotin ◽  
Tatyana S. Barisheva ◽  
Olga A. Zabotina ◽  
Irina A. Larskaya ◽  
Vera V. Lozovaya ◽  
...  
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Cell Walls ◽  
Temperature Acclimation ◽  
Wheat Roots

scholarly journals Nitric Oxide Circumstances in Nitrogen-Oxide Seeded Low-Temperature Powling-Burner Flames

2017 ◽  
Vol 3 (3) ◽  
pp. 157
Author(s):  
M. Furutani ◽  
Y. Ohta ◽  
M. Nose
Keyword(s):  
Nitric Oxide ◽  
Low Temperature ◽  
Hydrogen Cyanide ◽  
Chemical Species ◽  
Nitrogen Monoxide ◽  
Cool Flame ◽  
Spectrum Measurement ◽  
Temperature Development ◽  
Flame Region ◽  
Blue Flame

<p>Flat low-temperature two-stage flames were established on a Powling burner using rich diethyl-ether/ air or n-heptane/air mixtures, and nitrogen monoxide NO was added into the fuel-air mixtures with a concentration of 240 ppm. The temperature development and chemical-species histories, especially of NO, nitrogen dioxide NO<sub>2</sub> and hydrogen cyanide HCN were examined associated with an emission-spectrum measurement from the low-temperature flames. Nitrogen monoxide was consumed in the cool-flame region, where NO was converted to the NO<sub>2</sub>. The NO<sub>2</sub> generated, however, fell suddenly in the cool-flame degenerate region, in which the HCN superseded. In the blue-flame region the NO came out again and developed accompanied with remained HCN in the post blue-flame region. The NO seeding into the mixture intensified the blue-flame luminescence probably due to the cyanide increase.</p>

Increased capacity for synthesis of the D1 protein and of catalase at low temperature in leaves of cold-hardened winter rye (Secale cereale L.)

Planta ◽  
2003 ◽  
Vol 216 (5) ◽  
pp. 865-873 ◽  
Author(s):  
William Shang ◽  
Matthias Schmidt ◽  
Jürgen Feierabend
Keyword(s):  
Low Temperature ◽  
Secale Cereale ◽  
D1 Protein ◽  
Winter Rye ◽  
Secale Cereale L

Low temperature delays development of photosystem II activity in winter rye leaves

1989 ◽  
Vol 77 (1) ◽  
pp. 115-122 ◽  
Author(s):  
Marilyn Griffith ◽  
Heather C. H. McIntyre ◽  
Marianna Krol
Keyword(s):  
Low Temperature ◽  
Photosystem Ii ◽  
Winter Rye ◽  
Photosystem Ii Activity

An appropriate physiological control for environmental temperature studies: comparative growth kinetics of winter rye

1984 ◽  
Vol 62 (5) ◽  
pp. 1062-1068 ◽  
Author(s):  
M. Krol ◽  
M. Griffith ◽  
N. P. A. Huner
Keyword(s):  
Low Temperature ◽  
Leaf Area ◽  
Growth Response ◽  
Dry Weight ◽  
Maximum Growth ◽  
Cold Hardening ◽  
Lag Phase ◽  
Winter Rye ◽  
Kinetics Of ◽  
Leaf Dry Weight

The accurate interpretation of physiological and biochemical alterations observed in plants grown under contrasting environmental conditions requires knowledge of their relative physiological ages. For this purpose, we compared the growth kinetics of winter rye (Secale cereale L. cv. Puma) at nonhardening and cold-hardening temperatures. Growth at nonhardening temperatures was characterized by a 10-day lag phase with the attainment of maximum growth after about 28 days. Growth at cold-hardening temperatures resulted in an extension of the lag phase to about 21 days with maximum growth being attained after 56 days. The calculated growth coefficient at cold-hardening temperatures was 35–40% of that at nonhardening temperatures. This relationship was consistent with growth parameters such as leaf dry weight, fresh weight, and area, but not with plant height. Although total leaf dry weight and total number of leaves per plant did not differ between nonhardened and cold-hardened plants at maximum growth, total leaf area per plant and stretched plant height was 3- to 4-times greater in nonhardened than in cold-hardened plants. This resulted in a fourfold increase in leaf dry weight per leaf area during growth at low temperature in contrast to the maintenance of a constant ratio during growth at nonhardening conditions. The increase in this ratio during low temperature growth was, in part, accounted for by a decrease in water content and an increase in cytoplasmic content. These results were confirmed by the investigation of growth on an individual leaf basis. However, the growth response of leaves 1 and 2 differed from that of leaves 3 and 4 when the leaf dry weight: leaf area ratio was measured as a function of time at cold-hardening temperatures. This indicates that the stage of leaf development influences its growth response to an altered environment. The results of the development of leaf freezing tolerance indicated that maximum vegetative growth appeared to coincide with maximum freezing tolerance of leaves from cold-hardened plants (−22 °C) but not of leaves from unhardened plants (−11 °C).

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