Physiological Responses to Soil Drying by Warm‐Season Turfgrass Species

Crop Science ◽  
2017 ◽  
Vol 57 (S1) ◽  
Author(s):  
Jing Zhang ◽  
Kevin Kenworthy ◽  
J. Bryan Unruh ◽  
Bishow Poudel ◽  
John E. Erickson ◽  
...  
Keyword(s):  
Physiological Responses ◽  
Warm Season ◽  
Soil Drying

An exploration of the variability of physiological responses to soil drying in relation with C/N balance across three species of the under‐utilized genus Vigna

2020 ◽  
Author(s):  
Julie Guiguitant ◽  
Hélène Marrou ◽  
Denis Vile ◽  
Thomas R. Sinclair ◽  
Deepti Pradhan ◽  
...  
Keyword(s):  
Physiological Responses ◽  
N Balance ◽  
Soil Drying ◽  
Genus Vigna

Transpiration and visual appearance of warm season turfgrasses during soil drying

2013 ◽  
Vol 89 ◽  
pp. 36-43 ◽  
Author(s):  
Sarah E. Cathey ◽  
Jason K. Kruse ◽  
Thomas R. Sinclair ◽  
Michael D. Dukes
Keyword(s):  
Warm Season ◽  
Soil Drying ◽  
Visual Appearance

Warm-season heat stress in moose (Alces alces)

2013 ◽  
Vol 91 (12) ◽  
pp. 893-898 ◽  
Author(s):  
N.P. McCann ◽  
R.A. Moen ◽  
T.R. Harris
Keyword(s):  
Climate Change ◽  
Heat Stress ◽  
Alces Alces ◽  
Physiological Responses ◽  
Warm Season ◽  
Thermal Conditions ◽  
Gastrointestinal Illness ◽  
Variable Response ◽  
Respiration Rates ◽  
Free Ranging

Understanding how moose (Alces alces (L., 1758)) are affected by temperature is critical for determining why populations have recently declined at the southern extent of their North American range. Warm-season heat-stress thresholds of 14 and 20 °C are commonly used to study moose, but the variable response of free-ranging moose to temperatures above these thresholds suggests that moose may be more tolerant to heat. We studied zoo-managed cow and bull moose to identify factors that influence warm-season heat stress. We found clear behavioral and physiological responses to thermal conditions. Moose selected shade, indicating solar radiation affects heat stress. Temperature and wind influenced respiration rates. Heat-stress thresholds for moose occurred at 17 °C when bedded under calm conditions and 24 °C when bedded under wind, demonstrating that the onset of heat stress is sensitive to wind and incorporating wind velocity into analyses would improve investigations of heat stress. Moose showing symptoms of gastrointestinal illness selected wind at lower temperatures than healthy moose, suggesting the effects of climate change will be compounded for health-compromised moose. Determining why moose are declining at the southern extent of their range may require understanding how temperature interacts with wind, moose health, and other factors.

scholarly journals Growth and physiological responses of three warm-season legumes to water stress

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Gurjinder S. Baath ◽  
Alexandre C. Rocateli ◽  
Vijaya Gopal Kakani ◽  
Hardeep Singh ◽  
Brian K. Northup ◽  
...  
Keyword(s):  
Water Stress ◽  
Physiological Responses ◽  
Warm Season

Transpiration responses of warm-season turfgrass in relation to progressive soil drying

2016 ◽  
Vol 198 ◽  
pp. 249-253 ◽  
Author(s):  
Maria P. Fuentealba ◽  
Jing Zhang ◽  
Kevin Kenworthy ◽  
John Erickson ◽  
Jason Kruse ◽  
...  
Keyword(s):  
Warm Season ◽  
Soil Drying

scholarly journals Growth and Enzymatic Activity of Four Warm-season Turfgrass Species Exposed to Waterlogging

2015 ◽  
Vol 140 (2) ◽  
pp. 151-162 ◽  
Author(s):  
Junqin Zong ◽  
Yanzhi Gao ◽  
Jingbo Chen ◽  
Hailin Guo ◽  
Yi Wang ◽  
...  
Keyword(s):  
Physiological Responses ◽  
Warm Season ◽  
Total Soluble Protein ◽  
Plant Growth And Development ◽  
Physiological Mechanisms ◽  
Sod Activity ◽  
Seashore Paspalum ◽  
Paspalum Vaginatum ◽  
Root Oxidase Activity ◽  
Eremochloa Ophiuroides

Waterlogging (WL) negatively affects plant growth and development, but the physiological responses of turfgrass species to WL are not well understood. The objective of this study was to examine growth and physiological mechanisms of WL tolerance in warm-season turfgrass species. Knotgrass (Paspalum paspaloides), spiny mudgrass (Pseudoraphis spinescens), seashore paspalum (Paspalum vaginatum), and centipedegrass (Eremochloa ophiuroides) were subjected to 30 days of WL. At the end of the treatment, knotgrass and spiny mudgrass maintained the shoot and root biomass while seashore paspalum and centipedegrass showed reductions in biomass under WL. Root oxidase activity (ROA) was unaffected until after 12 or 18 days of WL but decreased by 14.3%, 17.8%, 32.0%, and 68.7% at 30 days of WL for knotgrass, spiny mudgrass, seashore paspalum, and centipedegrass, respectively. Waterlogging increased root activities of lactate dehydrogenase and alcohol dehydrogenase, but generally to a lesser extent in knotgrass and spiny mudgrass. The leaf and root activities of superoxide dismutase (SOD) and peroxidase (POD) were induced after 6 or 12 days of WL, but to a greater extent for knotgrass and spiny mudgrass. At 30 days of WL, the increased leaf and root activities of SOD and POD were higher in knotgrass and spiny mudgrass than that of seashore paspalum and centipedegrass; while centipedegrass showed 37.8% reduction in root SOD activity. The total soluble protein (TSP) concentration remained unchanged in both leaves and roots during the entire WL treatment for knotgrass, while a decreased leaf TSP was found in the other three species after 12 or 24 days of WL as well as in the roots of seashore paspalum and centipedegrass. More reductions in leaf or root TSP were observed in seashore paspalum and centipedegrass than in knotgrass and spiny mudgrass at 30 days of WL. The results indicated that higher ROA, activities of antioxidant enzymes and TSP contributed to WL tolerance of warm-season turfgrass species.

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