Triadimefon Induced C and N Metabolism and Root Ultra-Structural Changes for Drought Stress Protection in Soybean at Flowering Stage

2015 ◽  
Vol 35 (1) ◽  
pp. 222-231 ◽  
Author(s):  
Qin Zhou ◽  
Yuanyuan Wu ◽  
Zheng Chonglan ◽  
Xinghua Xing ◽  
Lixin Liu ◽  
...  
Keyword(s):  
Drought Stress ◽  
Structural Changes ◽  
Flowering Stage ◽  
Stress Protection ◽  
N Metabolism ◽  
C And N

scholarly journals Melatonin Enhances Drought Tolerance by Regulating Leaf Stomatal Behavior, Carbon and Nitrogen Metabolism, and Related Gene Expression in Maize Plants

2021 ◽  
Vol 12 ◽  
Author(s):  
Chengfeng Zhao ◽  
Haoxue Guo ◽  
Jiarui Wang ◽  
Yifan Wang ◽  
Renhe Zhang
Keyword(s):  
Gene Expression ◽  
Drought Stress ◽  
Drought Tolerance ◽  
Nitrogen Metabolism ◽  
Tca Cycle ◽  
Related Gene ◽  
Stomatal Behavior ◽  
N Metabolism ◽  
C And N ◽  
Maize Plants

It is commonly known that exogenously applied melatonin can alleviate the impact of drought stress, but the mechanism used by melatonin to regulate stomatal behavior and carbon (C) and nitrogen (N) metabolism to increase drought resistance remains elusive. Herein, our aim was to investigate the influence of exogenous melatonin on the regulation of C and N metabolism in maize plants under water deficit. In this study, we analyzed stomatal behavior, the key components of C and N metabolism, and the gene expression and activity of enzymes involved in the C and N metabolism in maize plants. The results showed that the application of melatonin (100 μM) significantly increased maize growth and sustained the opening of stomata, and secondarily increased the photosynthetic capacity in maize. Under drought stress, foliar application of melatonin induced the gene transcription and activities of sucrose phosphate synthetase, ADP-glucose pyrophosphorylase, phosphoenolpyruvate carboxylase, and citrate synthase, resulting in the enhancement of sucrose and starch synthesis and the tricarboxylic acid (TCA) cycle. This enhancement in sugar biosynthesis and the TCA cycle might lead to stronger N assimilation. As anticipated, NO3– reduction and NH4+ assimilation were also strengthened after melatonin treatment under drought stress. An increase was observed in some key enzymatic activities and transcription involved in nitrogen metabolism, such as that of nitrate reductase, nitrite reductase, glutamate synthase, and glutamine synthetase, in melatonin-treated, drought-stressed maize. Moreover, melatonin attenuated the drought-induced damage by reducing protein degradation and increasing the level of proline. Conclusively, our results indicate that exogenous melatonin enhances drought tolerance in maize via promoting stomatal opening and regulating C and N metabolism and related gene expression.

Ammonium application mitigates the effects of elevated carbon dioxide on the carbon/nitrogen balance of Phoebe bournei seedlings

2021 ◽  
Author(s):  
Xiao Wang ◽  
Xiaoli Wei ◽  
Gaoyin Wu ◽  
Shengqun Chen
Keyword(s):  
Carbon Dioxide ◽  
Enzyme Activities ◽  
Atmospheric Carbon Dioxide ◽  
Global Climate ◽  
Co2 Concentration ◽  
Rubisco Activase ◽  
Plant Responses ◽  
N Metabolism ◽  
C And N ◽  
Phoebe Bournei

Abstract The study of plant responses to increases in atmospheric carbon dioxide (CO2) concentration is crucial to understand and to predict the effect of future global climate change on plant adaptation and evolution. Increasing amount of nitrogen (N) can promote the positive effect of CO2, while how N forms would modify the degree of CO2 effect is rarely studied. The aim of this study was to determine whether the amount and form of nitrogen (N) could mitigate the effects of elevated CO2 (eCO2) on enzyme activities related to carbon (C) and N metabolism, the C/N ratio, and growth of Phoebe bournei (Hemsl.) Y.C. Yang. One-year-old P. bournei seedlings were grown in an open-top air chamber under either an ambient CO2 (aCO2) (350 ± 70 μmol•mol−1) or an eCO2 (700 ± 10 μmol•mol−1) concentration and cultivated in soil treated with either moderate (0.8 g per seedling) or high applications (1.2 g per seedling) of nitrate or ammonium. In seedlings treated with a moderate level of nitrate, the activities of key enzymes involved in C and N metabolism (i.e., Rubisco, Rubisco activase and glutamine synthetase) were lower under eCO2 than under aCO2. By contrast, key enzyme activities (except GS) in seedlings treated with high nitrate or ammonium were not significantly different between aCO2 and eCO2 or higher under eCO2 than under aCO2. The C/N ratio of seedlings treated with moderate or high nitrate under eCO2was significantly changed compared with the seedlings grown under aCO2, whereas the C/N ratio of seedlings treated with ammonium was not significantly different between aCO2 and eCO2. Therefore, under eCO2, application of ammonium can be beneficial C and N metabolism and mitigate effects on the C/N ratio.

scholarly journals A Central Role of Abscisic Acid in Drought Stress Protection of Agrobacterium-Induced Tumors on Arabidopsis

2007 ◽  
Vol 145 (3) ◽  
pp. 853-862 ◽  
Author(s):  
Marina Efetova ◽  
Jürgen Zeier ◽  
Markus Riederer ◽  
Chil-Woo Lee ◽  
Nadja Stingl ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Drought Stress ◽  
Stress Protection ◽  
Induced Tumors

Salicylic acid confers resistance against broomrape in tomato through modulation of C and N metabolism

2020 ◽  
Vol 147 ◽  
pp. 322-335 ◽  
Author(s):  
Mahmoud M.Y. Madany ◽  
Wael A. Obaid ◽  
Wael Hozien ◽  
Hamada AbdElgawad ◽  
Badreldin A. Hamed ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
N Metabolism ◽  
C And N

scholarly journals Low soil temperature and drought stress conditions at flowering stage affect physiology and pollen traits of rice

2019 ◽  
Vol 18 (8) ◽  
pp. 1859-1870 ◽  
Author(s):  
Gang-shun RAO ◽  
Umair Ashraf ◽  
Lei-lei KONG ◽  
Zhao-wen MO ◽  
Li-zhong XIAO ◽  
...  
Keyword(s):  
Drought Stress ◽  
Soil Temperature ◽  
Stress Conditions ◽  
Flowering Stage

Mitigation of drought stress by foliar application of salicylic acid and potassium in mungbean (Vigna radiata L.)

2016 ◽  
Vol 39 (2) ◽  
Author(s):  
Sadia Majeed ◽  
Muhammad Akram ◽  
Muhammad Latif ◽  
Muhammad Ijaz ◽  
Mubshar Hussain
Keyword(s):  
Salicylic Acid ◽  
Drought Stress ◽  
Adverse Effects ◽  
Vigna Radiata ◽  
Foliar Application ◽  
Growth And Yield ◽  
Flowering Stage ◽  
Stress Control ◽  
Formation Stage ◽  
Effects Of Drought

An experiment was conducted to investigate the mitigation of drought stress by foliar application of salicylic acid and potassium in mung bean. Treatments comprised of three drought stress (control, drought stress at flowering stage and drought stress at flowering and pod formation stages) and foliar application salicylic acid (100 ppm) alone and in combination with potassium (1%). Irrigation missing at flowering stage, affected less the growth and yield as compared with irrigation missing at both flowering and pod formation stage. Exogenous application of salicylic acid and potassium could mitigate the adverse effects of drought stress significantly.

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