Effects of exogenous salicylic acid on Impatiens walleriana L. grown in vitro under polyethylene glycol-imposed drought

Antonić, Dragana D; Milošević, Snežana; Cingel, Aleksandar; Lojic, Milena; Trifunović‐Momčilov, Milana; Petrić, Marija; Subotić, Angelina; Simonović, Ana

doi:10.1016/j.sajb.2016.04.002

Cited by 42 publications

(56 citation statements)

References 33 publications

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“…Our results showed that the anther RWC of SA-treated flowers decreased more slowly, and the decrease in amplitude was less than that of the control group. The result that SA could maintain RWC is corroborated by the findings of previous studies [28,29]. This suggested that SA application could maintain the normal development of pollen better than water application under freezing stress.…”

Section: Discussionsupporting

confidence: 82%

Effects of exogenous salicylic acid on physiological traits and CBF gene expression in peach floral organs under freezing stress

Zhang¹,

Ma²,

Guo³

et al. 2017

Arch biol sci (Beogr)

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To elucidate the effects of exogenous salicylic acid (SA) treatment on the cold resistance of peach flower, the floral organs of two peach cultivars were treated with 20 mg/L SA and stored at 0°C for observation and sample collection. Water application was the control. After a treatment period, the anther relative water content of the control and SA-treated flowers decreased. The extent of the reduction was greater in the control, suggesting that the SA treatment significantly helped to maintain the anther water content of peach. Analysis of the stigma relative electric conductivity revealed that the SA treatment prevented membrane injury during the low temperature treatment. Additionally, we measured CBF gene expression at low temperature in the petal, stigma and ovary. The expression was markedly upregulated in the cold-treated floral organs. CBF gene expression after SA treatment was higher than in the control when cold conditions continued. These results suggest that the effects of SA on ameliorating the freezing injury to peach floral organs and on enhancing cold tolerance may be associated with the induction of CBF gene.

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Section: Discussionsupporting

confidence: 82%

Effects of exogenous salicylic acid on physiological traits and CBF gene expression in peach floral organs under freezing stress

Zhang¹,

Ma²,

Guo³

et al. 2017

Arch biol sci (Beogr)

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“…This decrease was reported by Alam et al (2014). Contradictory results, where the catalase activity is increased, have been reported by Yuan et al (2014) and Antonić et al (2016). In fact, the behavior of antioxidant enzyme not only depends on the severity and duration of the stress treatment, but they also depends on the species and age of the plant (Carvalho, 2008).…”

Section: Effect Of Drought Stresssupporting

confidence: 52%

Effects of exogenous proline on the physiological characteristics of Triticum aestivum L. and Lens culinaris Medik. under drought stress

Bekka

Abrous-Belbachir

Djebbar

2018

AAS

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<p>Proline, which is an indicator of stress, is often considered as a good parameter for the testing of plants with good drought tolerance capacity. Thus, exogenous application of proline is a possible technique to avoid the deleterious effects of the drought on plant growth. The objectives of this study are to investigate the impact exogenous proline on the physiological behavior of two plant species, bread wheat, a monocot, and lentil, a dicot, under drought stress conditions. After several preliminary tests, optimal concentrations of exogenous proline were determined (6 mM for bread wheat and 2 mM for lentil) and both species were treated in normal and drought conditions. The results showed that water deficit affected both species leading to a reduction in growth, chlorophyll content and relative water content. Likewise, 15 % PEG-6000, which is equivalent to osmotic potential of -0.31MPa, caused a high accumulation of proline. In almost of cases we also noted a remarkable decrease in catalase (Cat), ascorbate peroxidase (APX) and gaiacol peroxidase (GPX) activities which was probably due to the oxidative stress caused by drought stress. The application of proline in stressful conditions reduced the deleterious effects caused by the stress on both species, due, particularly, to the accumulation of free endogenous proline and the increase of Cat, APX and GPX activities.</p>

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“…Reduced leaf area and accumulated ABA contributed to reduction of transpirational water loss in drought-stressed I. walleriana, while the activity of antioxidants had an important role in neutralizing oxidative stress [ 3 ]. In order to increase drought tolerance in I. walleriana, salicylic acid was exogenous applied, and its effects on growth and development have been assessed by our research team [ 47 , 48 ]. Analysis of aquaporins gene expression indicated a very important role of these proteins in water transport in plants during drought [ 49 , 50 , 51 ].…”

Section: Discussionmentioning

confidence: 99%

“…Influence of drought stress and rehydration on I. walleriana growth could be observed on plant morphological and physiological levels [ 3 , 47 ]. As shown in Figure 8 , as well as in previous research [ 3 ], drought stress reduced plant growth, while the recovery had an opposite effect.…”

Section: Discussionmentioning

confidence: 99%

Molecular Characterization and Expression of Four Aquaporin Genes in Impatiens walleriana during Drought Stress and Recovery

Đurić

Subotić

Prokić

et al. 2021

Plants

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Aquaporins comprise a large group of transmembrane proteins responsible for water transport, which is crucial for plant survival under stress conditions. Despite the vital role of aquaporins, nothing is known about this protein family in Impatiens walleriana, a commercially important horticultural plant, which is sensitive to drought stress. In the present study, attention is given to the molecular characterization of aquaporins in I. walleriana and their expression during drought stress and recovery. We identified four I. walleriana aquaporins: IwPIP1;4, IwPIP2;2, IwPIP2;7 and IwTIP4;1. All of them had conserved NPA motifs (Asparagine-Proline-Alanine), transmembrane helices (TMh), pore characteristics, stereochemical properties and tetrameric structure of holoprotein. Drought stress and recovery treatment affected the aquaporins expression in I. walleriana leaves, which was up- or downregulated depending on stress intensity. Expression of IwPIP2;7 was the most affected of all analyzed I. walleriana aquaporins. At 15% and 5% soil moisture and recovery from 15% and 5% soil moisture, IwPIP2;7 expression significantly decreased and increased, respectively. Aquaporins IwPIP1;4 and IwTIP4;1 had lower expression in comparison to IwPIP2;7, with moderate expression changes in response to drought and recovery, while IwPIP2;2 expression was of significance only in recovered plants. Insight into the molecular structure of I. walleriana aquaporins expanded knowledge about plant aquaporins, while its expression during drought and recovery contributed to I. walleriana drought tolerance mechanisms and re-acclimation.

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Effects of exogenous salicylic acid on Impatiens walleriana L. grown in vitro under polyethylene glycol-imposed drought

Cited by 42 publications

References 33 publications

Effects of exogenous salicylic acid on physiological traits and CBF gene expression in peach floral organs under freezing stress

Effects of exogenous salicylic acid on physiological traits and CBF gene expression in peach floral organs under freezing stress

Effects of exogenous proline on the physiological characteristics of Triticum aestivum L. and Lens culinaris Medik. under drought stress

Molecular Characterization and Expression of Four Aquaporin Genes in Impatiens walleriana during Drought Stress and Recovery

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