Combined effects of drought stress and psyllid herbivory on the invasive weed Scotch broom, Cytisus scoparius

2020 ◽  
Vol 168 (3) ◽  
pp. 209-220
Author(s):  
Brian N. Hogg ◽  
Patrick J. Moran
Keyword(s):  
Drought Stress ◽  
Combined Effects ◽  
Cytisus Scoparius ◽  
Invasive Weed ◽  
Scotch Broom ◽  
Effects Of Drought

Synergistic and additive effects of drought stress and simulated herbivory on two goldenrods, Solidago altissima and S. gigantea

Botany ◽  
2016 ◽  
Vol 94 (8) ◽  
pp. 635-642 ◽  
Author(s):  
Zoryana Shibel ◽  
Stephen B. Heard
Keyword(s):  
Drought Stress ◽  
Abiotic Stresses ◽  
Synergistic Effects ◽  
Synergistic Action ◽  
Combined Effects ◽  
Additive Effects ◽  
Solidago Altissima ◽  
Simulated Herbivory ◽  
Combined Stresses ◽  
Effects Of Drought

Understanding the combined effects of stressors on plants is important for understanding how they will tolerate herbivory and other damage under unfavorable conditions. When two stresses have synergistic effects, plants may experience particularly strong impacts. We examined individual and combined effects of drought stress and clipping (simulated herbivory) on two species of goldenrods (Solidago altissima L. and S. gigantea Ait.). Each stress reduced production of most plant structures, with drought stress having stronger impacts than clipping. The effects of the two stresses were additive for S. gigantea but synergistic for S. altissima, at least for aboveground biomass and inflorescence biomass. Both species, when under stress, reallocated resources toward asexual reproduction (rhizomes) and away from sexual reproduction (inflorescences). Our results suggest that even closely related plants may tolerate damage differently when under abiotic stresses, and that predicting the additive vs. synergistic action of combined stresses will be difficult.

Combined effects of drought stress and Armillaria infection on tree mortality in Norway spruce plantations

2018 ◽  
Vol 427 ◽  
pp. 434-445 ◽  
Author(s):  
Jaroslav Holuša ◽  
Jan Lubojacký ◽  
Vladislav Čurn ◽  
Tomáš Tonka ◽  
Karolina Lukášová ◽  
...  
Keyword(s):  
Drought Stress ◽  
Norway Spruce ◽  
Tree Mortality ◽  
Combined Effects ◽  
Effects Of Drought

Effects of drought stress on growth, photosynthesis and alkaloid accumulation of Lycoris aurea

2020 ◽  
Vol 52 (4) ◽  
Author(s):  
Juan Liang ◽  
Miaohua Quan ◽  
Chaowen She ◽  
Anna He ◽  
Xiaoliang Xiang ◽  
...  
Keyword(s):  
Drought Stress ◽  
Lycoris Aurea ◽  
Effects Of Drought

Effects of Drought Stress on Physiological Characteristics and Dry Matter Production in Maize Silking Stage

2013 ◽  
Vol 38 (10) ◽  
pp. 1884-1890 ◽  
Author(s):  
Ren-He ZHANG ◽  
Dong-Wei GUO ◽  
Xing-Hua ZHANG ◽  
Hai-Dong LU ◽  
Jian-Chao LIU ◽  
...  
Keyword(s):  
Drought Stress ◽  
Dry Matter ◽  
Physiological Characteristics ◽  
Dry Matter Production ◽  
Matter Production ◽  
Effects Of Drought

Effects of Drought Stress on Photosynthetic Characteristics of Maize Hybrids at Seedling Stage

2015 ◽  
Vol 41 (1) ◽  
pp. 154 ◽  
Author(s):  
Xing-Hua ZHANG ◽  
Jie GAO ◽  
Wei-Li DU ◽  
Ren-He ZHANG ◽  
Ji-Quan XUE
Keyword(s):  
Drought Stress ◽  
Photosynthetic Characteristics ◽  
Seedling Stage ◽  
Maize Hybrids ◽  
Effects Of Drought

Effects of Drought Stress and Rewatering on Physiological Characteristics of Pear Seedling

2012 ◽  
Vol 18 (2) ◽  
pp. 218
Author(s):  
Jiliang SUN ◽  
Liulin LI ◽  
Shutian TAO ◽  
Shaoling ZHANG
Keyword(s):  
Drought Stress ◽  
Physiological Characteristics ◽  
Effects Of Drought

The Effects of Drought on Leaf Gas Exchange and Growth of Three Species of Herbaceous Perennials

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 540a-540
Author(s):  
K.J. Prevete ◽  
R.T. Fernandez
Keyword(s):  
Drought Stress ◽  
Stomatal Conductance ◽  
Gas Exchange ◽  
Drought Tolerance ◽  
Transpiration Rate ◽  
Leaf Gas Exchange ◽  
Gas Analysis ◽  
Herbaceous Perennials ◽  
Effects Of Drought ◽  
Analysis System

Three species of herbaceous perennials were tested on their ability to withstand and recover from drought stress periods of 2, 4, and 6 days. Eupatorium rugosum and Boltonia asteroides `Snowbank' were chosen because of their reported drought intolerance, while Rudbeckia triloba was chosen based on its reported drought tolerance. Drought stress began on 19 Sept. 1997. Plants were transplanted into the field the day following the end of each stress period. The effects of drought on transpiration rate, stomatal conductance, and net photosynthetic rate were measured during the stress and throughout recovery using an infrared gas analysis system. Leaf gas exchange measurements were taken through recovery until there were no differences between the stressed plants and the control plants. Transpiration, stomatal conductance, and photosynthesis of Rudbeckia and Boltonia were not affected until 4 days after the start of stress. Transpiration of Eupatorium decreased after 3 days of stress. After rewatering, leaf gas exchange of Boltonia and Rudbeckia returned to non-stressed levels quicker than Eupatorium. Growth measurements were taken every other day during stress, and then weekly following transplanting. Measurements were taken until a killing frost that occurred on 3 Nov. There were no differences in the growth between the stressed and non-stressed plants in any of the species. Plants will be monitored throughout the winter, spring, and summer to determine the effects of drought on overwintering capability and regrowth.

Involvement of dehydrin proteins in mitigating the negative effects of drought stress in plants

2021 ◽  
Author(s):  
Riyazuddin Riyazuddin ◽  
Nisha Nisha ◽  
Kalpita Singh ◽  
Radhika Verma ◽  
Ravi Gupta
Keyword(s):  
Drought Stress ◽  
Negative Effects ◽  
Effects Of Drought

Penconazole and calcium ameliorate drought stress in canola by upregulating the antioxidative enzymes

2020 ◽  
Vol 47 (9) ◽  
pp. 825 ◽  
Author(s):  
Maryam Rezayian ◽  
Vahid Niknam ◽  
Hassan Ebrahimzadeh
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Drought Stress ◽  
Drought Tolerance ◽  
Antioxidative Enzymes ◽  
Proline Content ◽  
Fresh Weight ◽  
Negative Effects ◽  
Mda Content ◽  
Effects Of Drought

The aim of this research was to gauge the alternations in the lipid peroxidation and antioxidative enzyme activity in two cultivars (cv. RGS003 and cv. Sarigol) of canola under drought stress and drought tolerance amelioration by penconazole (PEN) and calcium (Ca). Plants were treated with different polyethylene glycol (PEG) concentrations (0, 5, 10 and 15%) without or with PEN (15 mg L–1) and Ca (15 mM). The Ca treatment prevented the negative effects of drought on fresh weight (FW) in RGS003 and Sarigol at 5 and 15% PEG respectively. Ca and PEN/Ca treatments caused significant induction in the proline content in Sarigol at 15% PEG; the latter treatment was accompanied by higher glycine betaine (GB), lower malondialdehyde (MDA) and growth recovery. Hydrogen peroxide (HO2) content in Sarigol was proportional to the severity of drought stress and all PEN, Ca and PEN/Ca treatments significantly reduced the H2O2 content. PEN and PEN/Ca caused alleviation of the drought-induced oxidative stress in RGS003. RGS003 cultivar exhibited significantly higher antioxidative enzymes activity at most levels of drought, which could lead to its drought tolerance and lower MDA content. In contrast to that of Sarigol, the activity of catalase and superoxide dismutase (SOD) increased with Ca and PEN/Ca treatments in RGS003 under low stress. The application of PEN and Ca induced significantly P5CS and SOD expression in RGS003 under drought stress after 24 h. Overall, these data demonstrated that PEN and Ca have the ability to enhance the tolerance against the drought stress in canola plants.

Effects of drought stress on grain yield, agronomic performance, and heterosis of marker-based improved provitamin-A maize synthetics and their hybrids

2021 ◽  
pp. 1-21
Author(s):  
Innocent Iseghohi ◽  
Ayodeji Abe ◽  
Silvestro Meseka ◽  
Wende Mengesha ◽  
Melaku Gedil ◽  
...  
Keyword(s):  
Drought Stress ◽  
Grain Yield ◽  
Provitamin A ◽  
Agronomic Performance ◽  
Effects Of Drought
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