scholarly journals Special issue in honour of Prof. Reto J. Strasser - Thylakoid membrane reorganization, induced by growth light intensity, affects the plants susceptibility to drought stress

2020 ◽  
Vol 58 (SPECIAL ISSUE) ◽  
pp. 369-378
Author(s):  
N. PETROVA ◽  
M. PAUNOV ◽  
S. STOICHEV ◽  
S. TODINOVA ◽  
S.G. TANEVA ◽  
...  
Keyword(s):  
Drought Stress ◽  
Light Intensity ◽  
Thylakoid Membrane ◽  
Special Issue ◽  
Membrane Reorganization

Environmental Effects on Velvetleaf (Abutilon theophrasti) Epicuticular Wax Deposition and Herbicide Absorption

Weed Science ◽  
2011 ◽  
Vol 59 (1) ◽  
pp. 14-21 ◽  
Author(s):  
H. Hatterman-Valenti ◽  
A. Pitty ◽  
M. Owen
Keyword(s):  
Drought Stress ◽  
Light Intensity ◽  
Secondary Alcohol ◽  
Field Capacity ◽  
High Light Intensity ◽  
Epicuticular Wax ◽  
High Light ◽  
Wax Deposition ◽  
Low Light ◽  
Stress Regime

Controlled environment experiments showed that velvetleaf plants grown under drought stress or low temperature (LT) treatments had greater leaf epicuticular wax (ECW) deposition compared to plants grown in soil with moisture at field capacity (FC) or a high temperature (HT) regime. Light intensity did not affect ECW deposition; however, increasing light intensity decreased the leaf ECW ester content and increased the secondary alcohol content. Plants grown at an LT regime or under FC had leaf ECW with fewer hydrocarbons and more esters than those grown at an HT or drought stress regime. Velvetleaf absorption of acifluorfen increased as light intensity decreased for plants grown in adequate soil water content, while the opposite was true for drought-stressed plants. Velvetleaf absorption of acifluorfen was approximately 3 and 10 times greater, respectively, with the addition of 28% urea ammonium nitrate (UAN) in comparison to crop oil concentrate (COC) or no adjuvant, regardless of the environmental treatments. Plants absorbed more acifluorfen when subjected to the LT regime in comparison to the HT regime when UAN was the adjuvant, while the opposite was true when COC was the adjuvant. Velvetleaf absorption of acifluorfen was not affected by drought stress when COC or no adjuvant was used and varied between studies when UAN was used. Velvetleaf absorption of bentazon was greatest for plants grown under HT/FC or high light/FC treatments and least with plants grown under HT/drought stress or low light/drought stress treatments, regardless of the adjuvant. However, bentazon absorption was higher with the addition of an adjuvant and for plants grown at a high light intensity or FC condition compared with medium to low light intensity or drought stress treatments.

Effect of environment on giant foxtail (Setaria faberi) leaf wax and fluazifop-P absorption

Weed Science ◽  
2006 ◽  
Vol 54 (4) ◽  
pp. 607-614 ◽  
Author(s):  
Harlene M. Hatterman-Valenti ◽  
Abelino Pitty ◽  
Micheal D. K. Owen
Keyword(s):  
Drought Stress ◽  
Light Intensity ◽  
Field Capacity ◽  
Light Conditions ◽  
Low Light ◽  
Low Light Intensity ◽  
Giant Foxtail ◽  
Compositional Changes ◽  
Aldehyde Content ◽  
P Absorption

Controlled-environment experiments were conducted to determine giant foxtail epicuticular wax (ECW) deposition and fluazifop-P absorption under different environmental conditions and with two adjuvants. Drought stress and low temperature increased leaf ECW content, whereas low light intensity decreased ECW content compared with medium light intensity. Drought stress conditions decreased the fatty acid and primary alcohol content of ECW and increased the hydrocarbon content compared with field capacity. Compositional changes would make the ECW more hydrophobic and reduce leaf wetting by herbicide spray. Increasing air temperature decreased the aldehyde content of ECW, whereas decreasing light intensity increased ECW fatty acid and aldehyde content while decreasing primary alcohols and esters. Compositional changes under low light intensity would make the ECW more hydrophilic and increase leaf wetting by a herbicide spray. Drought stress reduced fluazifop-P absorption regardless of the temperature but could not further reduce fluazifop-P absorption under low light intensity. Fluazifop-P absorption by plants under low light and drought stress conditions was similar to plants under low or medium light intensity and field capacity conditions. Similarly, the rate of fluazifop-P absorption was less under drought stress and low light conditions. Fluazifop-P absorption was greater when crop oil concentrate was added compared with 28% urea ammonium nitrate or no additive. Crop oil concentrate, added to the herbicide solution, overcame reduced fluazifop-P absorption under the low light conditions and in one of the two drought stress regimes but could not overcome reduced fluazifop-P absorption with the high temperature regime.

Acclimation of Tomato Leaves to Changes in Light Intensity; Effects on the Function of the Thylakoid Membrane

1986 ◽  
Vol 37 (2) ◽  
pp. 211-220 ◽  
Author(s):  
E. C. DAVIES ◽  
W. S. CHOW ◽  
J. M. LE FAY ◽  
B. R. JORDAN
Keyword(s):  
Light Intensity ◽  
Thylakoid Membrane

scholarly journals Light Intensity and Drought Stress as Predisposition Factors for Dogwood Anthracnose

1995 ◽  
Vol 13 (4) ◽  
pp. 186-189
Author(s):  
Dan K. Erbaugh ◽  
Mark T. Windham ◽  
Ann J.W. Stodola ◽  
Robert M. Augé
Keyword(s):  
Drought Stress ◽  
Light Intensity ◽  
Disease Progression ◽  
Disease Severity ◽  
Cornus Florida ◽  
Ambient Light ◽  
Inoculation Methods ◽  
Anthracnose Disease ◽  
Discula Destructiva ◽  
Dogwood Anthracnose

Abstract Light and drought stress were studied as predisposition factors for dogwood anthracnose. Disease progression was recorded as a percentage of leaves with lesions in two-year-old potted dogwood trees (Cornus florida L.) that had been inoculated with dogwood anthracnose (Discula destructiva Redlin sp. nov.) and subjected to four light (100%, 50%, 10% and 2% ambient light) and two drought treatments. Natural vs.artificial inoculation methods were compared and found to have similar effects on disease severity. Shade increased disease severity; maximum disease progression values for trees in thoroughly watered treatments were about 5% at 100% light and 50% light, 35% at 10% light, and 26% at 2% light. Drought increased disease severity on all shaded trees, where disease progression increased 625% in 50% light, 43% in 10% light and 31% in 2% light, compared to 100% light. Drought had no effect on disease severity of unshaded trees.

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