Abscisic-acid-induced drought tolerance in Funaria hygrometrica Hedw.

Planta ◽  
1991 ◽  
Vol 186 (1) ◽  
Author(s):  
Olaf Werner ◽  
RosaMaria Ros Esp�n ◽  
Martin Bopp ◽  
Rainer Atzorn
Keyword(s):  
Abscisic Acid ◽  
Drought Tolerance ◽  
Funaria Hygrometrica

Foliar Application of Abscisic Acid and Sulfonamide Compounds Induced Drought Tolerance in Watermelon

2015 ◽  
Vol 723 ◽  
pp. 705-710
Author(s):  
Wei Shun Cheng ◽  
Dan Li Zeng ◽  
Na Zhang ◽  
Hong Xia Zeng ◽  
Xian Feng Shi ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Drought Stress ◽  
Drought Tolerance ◽  
Ascorbate Peroxidase ◽  
Glycine Betaine ◽  
Foliar Application ◽  
Citrullus Lanatus ◽  
Recovery Phase ◽  
Daily Application

The effects of exogenous abscisic acid and two sulfonamide compounds: Sulfacetamide and Sulfasalazine were studied on tolerance of watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai var. lanatus] under drought stress and compared with abscisic acid effects. Eight-week old plants were treated with ABA (10 and 25 mg/L), Sulfacetamide (25, 50 and 100 mg/L) and Sulfasalazine (25,50 and 100 mg/L). Solutions were sprayed daily and sampling was done at 0 h, 48 h, 96 h, 144 h and 48 h after re-watering (recovery phase or 192 h). Treated plants showed relatively greater drought tolerance. This indicates that, Sulfacetamide and Sulfasalazine may improve resistance in watermelon, like ABA, increasing levels of proline, glycine betaine and malondialdehyde and the activity of ascorbate peroxidase. Daily application of Sulfasalazine and Sulfacetamide during drought stress period was effective in increasing watermelon plants tolerance to drought as was ABA.

scholarly journals A DTX/MATE-Type Transporter Facilitates Abscisic Acid Efflux and Modulates ABA Sensitivity and Drought Tolerance in Arabidopsis

2014 ◽  
Vol 7 (10) ◽  
pp. 1522-1532 ◽  
Author(s):  
Haiwen Zhang ◽  
Huifen Zhu ◽  
Yajun Pan ◽  
Yuexuan Yu ◽  
Sheng Luan ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Drought Tolerance ◽  
Aba Sensitivity

scholarly journals ABA Receptor Subfamily III Enhances Abscisic Acid Sensitivity and Improves the Drought Tolerance of Arabidopsis

2018 ◽  
Vol 19 (7) ◽  
pp. 1938 ◽  
Author(s):  
Xiaoyi Li ◽  
Gaoming Li ◽  
Ying Li ◽  
Xiangge Kong ◽  
Liang Zhang ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Drought Tolerance ◽  
Acid Sensitivity ◽  
Aba Receptor

scholarly journals Rice OsHSFA3 Gene Improves Drought Tolerance by Modulating Polyamine Biosynthesis Depending on Abscisic Acid and ROS Levels

2020 ◽  
Vol 21 (5) ◽  
pp. 1857 ◽  
Author(s):  
Ming-Dong Zhu ◽  
Meng Zhang ◽  
Du-Juan Gao ◽  
Kun Zhou ◽  
Shan-Jun Tang ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Drought Tolerance ◽  
Functional Characterization ◽  
Activity Levels ◽  
Enzymatic Antioxidants ◽  
Heat Shock Factors ◽  
Polyamine Biosynthesis ◽  
Polyamine Content ◽  
Transgenic Lines

Drought is a serious problem, which causes heavy yield losses for rice. Heat-shock factors (HSFs) had been implicated in tolerance to drought and high temperature. However, there has not been much functional characterization and mechanism clarification in rice. Previously, we found an HSF gene, OsHSFA3, was highly related with drought tolerance after screening from 10,000 different samples. Herein, we cloned the OsHSFA3 from rice and overexpressed it in Arabidopsis thaliana to study its regulatory mechanism of drought tolerance. Phenotypic and physiological assays of the transgenic Arabidopsis lines showed that overexpression of OsHSFA3 confers drought tolerance by reducing water loss and reactive oxygen species (ROS) levels, whereas it increases abscisic acid (ABA) levels. However, enzymatic antioxidants such as activity levels of superoxide dismutase, peroxidase and catalase were not significantly different between wild type and transgenic lines. Instead, we observed a significant increase in polyamine content, which was correlated with increased AtADC1, AtADC2, SPDS1 and SPMS expression levels. In silico and in vivo analyses confirmed that OsHSFA3 is a nuclear-localized gene. In addition, OsHSFA3 can bind to the promoter of AtADC1 and OsADC via a yeast one-hybrid assay. Overall, this study reveals that OsHSFA3 improves drought tolerance in Arabidopsis not only by increasing ABA levels, but also by modulating polyamine levels to maintain ROS homeostasis, therefore it could be a strong candidate to develop drought-tolerant rice cultivars.

Expressing TERF1 in tobacco enhances drought tolerance and abscisic acid sensitivity during seedling development

Planta ◽  
2005 ◽  
Vol 222 (3) ◽  
pp. 494-501 ◽  
Author(s):  
Xiulin Zhang ◽  
Zhijin Zhang ◽  
Jia Chen ◽  
Qi Chen ◽  
Xue-Chen Wang ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Drought Tolerance ◽  
Seedling Development ◽  
Acid Sensitivity

Two homologous LHY pairs negatively control soybean drought tolerance by repressing the abscisic acid responses

2020 ◽  
Author(s):  
Kai Wang ◽  
Tiantian Bu ◽  
Qun Cheng ◽  
Lidong Dong ◽  
Tong Su ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Drought Tolerance
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