Effects of Pre-Treatments with Abscisic Acid and/or Benzyladenine on Gas Exchange of French Bean, Sugar Beet, and Maize Leaves During Water Stress and After Rehydration

Pospíšilová, Jana; Baťková, P.

doi:10.1023/b:biop.0000041092.40705.6b

Cited by 43 publications

(40 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Generally, stresses, such as drought, decrease the production and transport of CKs from roots. Additionally, application of exogenous CKs can increase stomatal apertures and transpiration of many plants (Davies and Zhang, 1991;Pospisilova and Batkova, 2004;Pospisilova et al, 2005). In plants such as Arabidopsis thaliana, the key enzymes involved in CK metabolism are adenosine phosphate-isopentenyltransferases (IPTs) and CK oxidases/dehydrogenases (CKXs) (Hirose et al, 2008;Werner and Schmü lling, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Specifically, the accumulation of ABA promotes stomatal closure to minimize water loss, accelerates leaf senescence, downregulates plant growth, and induces the biosynthesis of protective substances (e.g., late embryogenesisabundant proteins). On the other hand, CKs trigger responses to delay both stomatal closure and leaf senescence (Finkelstein et al, 2002;Hansen and Dö rffling, 2003;Pospisilova, 2003;Chow and McCourt, 2004;Pospisilova and Batkova, 2004;Pospisilova et al, 2005). Many studies have focused on the molecular functions of ABA in relation to abiotic stress and vice versa and the influence of environmental stresses on ABA metabolism (Bartels and Sunkar, 2005;Hirayama and Shinozaki, 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Cytokinin Mutants and Regulation of Cytokinin Metabolic Genes Reveals Important Regulatory Roles of Cytokinins in Drought, Salt and Abscisic Acid Responses, and Abscisic Acid Biosynthesis

et al. 2011

View full text Add to dashboard Cite

Cytokinins (CKs) regulate plant growth and development via a complex network of CK signaling. Here, we perform functional analyses with CK-deficient plants to provide direct evidence that CKs negatively regulate salt and drought stress signaling. All CK-deficient plants with reduced levels of various CKs exhibited a strong stress-tolerant phenotype that was associated with increased cell membrane integrity and abscisic acid (ABA) hypersensitivity rather than stomatal density and ABA-mediated stomatal closure. Expression of the Arabidopsis thaliana ISOPENTENYL-TRANSFERASE genes involved in the biosynthesis of bioactive CKs and the majority of the Arabidopsis CYTOKININ OXIDASES/DEHYDROGENASES genes was repressed by stress and ABA treatments, leading to a decrease in biologically active CK contents. These results demonstrate a novel mechanism for survival under abiotic stress conditions via the homeostatic regulation of steady state CK levels. Additionally, under normal conditions, although CK deficiency increased the sensitivity of plants to exogenous ABA, it caused a downregulation of key ABA biosynthetic genes, leading to a significant reduction in endogenous ABA levels in CK-deficient plants relative to the wild type. Taken together, this study provides direct evidence that mutual regulation mechanisms exist between the CK and ABA metabolism and signals underlying different processes regulating plant adaptation to stressors as well as plant growth and development.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Cytokinin Mutants and Regulation of Cytokinin Metabolic Genes Reveals Important Regulatory Roles of Cytokinins in Drought, Salt and Abscisic Acid Responses, and Abscisic Acid Biosynthesis

et al. 2011

View full text Add to dashboard Cite

show abstract

“…The strategy of exogenous application of various organic osmolytes, osmoprotectants, and growth regulators such as abscisic acid, benzyladenine (Pospíšilová and Baťková 2004), proline (Ali et al 2007), ascorbic acid (Dolatabadian et al 2009), chitosan (Yang et al 2009), glycinebetaine, salicylic acid, nitrous oxide, brassinosteroids (Farooq et al 2010), methyl jasmonate (Wang 1999) to plants was regarded vital technique to alleviate the deleterious effects of drought stress in plants. Out of the various stress ameliorating materials, glycinebetaine (GB) is considered an effective one.…”

mentioning

confidence: 99%

Gas exchange and chlorophyll synthesis of maize cultivars are enhanced by exogenously-applied glycinebetaine under drought conditions

Anjum¹,

Farooq²,

Wang³

et al. 2011

Plant Soil Environ.

View full text Add to dashboard Cite

Glycinebetaine acts as an osmoprotectant and is closely related with drought resistance. In the present study, glycinebetaine (GB) was exogenously-applied to two contrasting maize cultivars, Dongdan-60 and ND-95, to see whether GB improves drought resistance. Maize cultivars were grown with normal water supply till the heading stage and then exposed to two levels of soil moisture, well-watered control and drought-stressed, and then GB solution of 100 mmol was foliar applied five days after moisture treatments were imposed. The gas exchange and chlorophyll concentration were substantially declined in both maize cultivars under water stressed conditions. However, this reduction was less in Dongdan-60 than ND-95. Nonetheless, GB-treated plants considerably maintained higher gas exchange rate and chlorophyll concentration during drought stress than non-GB treated plants. The GB-induced improvement in gas exchange and chlorophyll synthesis under water stress ultimately resulted in improved growth and yield in both maize cultivars. Furthermore, the positive responses to exogenous GB application were more pronounced in Dongdan-60 as compared to ND-95 in all traits examined under water-deficit conditions. In conclusion, exogenously applied GB to maize crops could improve gas exchange, chlorophyll synthesis, growth and yield of maize.

show abstract

“…Thus, selection for drought tolerant sources in landraces and wild wheat based on the yield contributing traits could be misleading (Dodd et al, 2011). Furthermore, certain biochemicals are found synthesized in stressed condition to confer drought tolerance by providing osmo-regulation, like, proline (Pospíšilová and Batková, 2004), abscisic acid (ABA) (Quarrie et al, 1999) as well as some drought induced physiological traits (Reynolds et al, 2007). Among the physiological traits, traits to maintain uninterrupted photosynthesis viz., leaf chlorophyll content (Pask et al, 2012), keeping cell structure integrity viz., membrane thermostability (Cave, 1981;Buchanan et al, 2000), keeping turgid leaf viz.…”

Section: Introductionmentioning

confidence: 99%

Morpho-Physiological and Biochemical Trait Based Selection of Wheat Genotypes for Drought Tolerance

Raffi

Asaduzzaman

2015

Bangla J Plant Breeding & Genetics

View full text Add to dashboard Cite

Drought stress is now become the most important abiotic stress for wheat in Bangladesh. Rabi season often compromised wheat production by imposing drought stress. Therefore, it has been a priority to develop drought tolerant wheat variety for Bangladesh. However, the lack of genetic variability for drought tolerance in wheat has been a major bottleneck for developing drought tolerance wheat variety. The present investigation was carried out in an aim to evaluate several exotic and locally cultivated wheat genotypes for drought tolerance based on morpho-physiological and biochemical traits. Experiment was carried out at the net house of Field Laboratory of Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh with seven replications in a RCBD design. Ten locally cultivated and exotic wheat genotypes were grown under control (100% field capacity) and drought (30% field capacity) conditions. Genotypes used in the study were identified with different types of drought tolerance mechanisms, viz., Berkut for earliness, Shatabdi for grain weight, BARI Gom 26 for spike and grain number, along with Vorobey, Berkut for enhanced biosynthesis of proline, Sokoll for undamaged leaf Chlorophyll content and relative water content, Sakha8, Gaurav, Sonalika and Shatabdi for membrane thermostability; Sakha8 and Sourav for improved stress tolerance index. The genotypes screened out with different traits related to drought tolerance can be utilized as gene source for future breeding programs.

show abstract

Effects of Pre-Treatments with Abscisic Acid and/or Benzyladenine on Gas Exchange of French Bean, Sugar Beet, and Maize Leaves During Water Stress and After Rehydration

Cited by 43 publications

References 27 publications

Analysis of Cytokinin Mutants and Regulation of Cytokinin Metabolic Genes Reveals Important Regulatory Roles of Cytokinins in Drought, Salt and Abscisic Acid Responses, and Abscisic Acid Biosynthesis

Analysis of Cytokinin Mutants and Regulation of Cytokinin Metabolic Genes Reveals Important Regulatory Roles of Cytokinins in Drought, Salt and Abscisic Acid Responses, and Abscisic Acid Biosynthesis

Gas exchange and chlorophyll synthesis of maize cultivars are enhanced by exogenously-applied glycinebetaine under drought conditions

Morpho-Physiological and Biochemical Trait Based Selection of Wheat Genotypes for Drought Tolerance

Contact Info

Product

Resources

About