Mitigating Strategies of Gibberellins in Various Environmental Cues and Their Crosstalk with Other Hormonal Pathways in Plants: a Review

Niharika, .; Singh, Narsingh Bahadur; Singh, Arun Kumar; Khare, Shubhra; Yadav, Vikas; Bano, Chanda; Yadav, Ravi Kumar

doi:10.1007/s11105-020-01231-0

Cited by 28 publications

(12 citation statements)

References 120 publications

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“…Plant shows many adaptive strategies at the cellular, molecular, physiological, and organelle levels under salinity via various signaling enzymatic cascades (Niharika et al 2020). These strategies include osmoprotectant molecules regulation, developed antioxidant defense mechanism, scavenging of reactive oxygen species (ROS), maintaining osmotic balance, and compartmentalization of toxic ions (Khare et al 2020;Kotzamani et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Salinity-Induced Attenuation in Secondary Metabolites Profile and Herbicidal Potential of Brassica nigra L. on Anagallis arvensis L.

Khare

Singh

Niharika

et al. 2022

J Plant Growth Regul

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Studies on plant defense mechanisms in stressful conditions predict that plant cope up with increasing stress for survival. Under environmental stress plants interact with problems like competition and survival under resource constraints or utilization of these resources in production of secondary compounds. In this experiment, we examined the costs of defense by evaluating variation in production of secondary compounds of Brassica nigra grown in the saline (B1 = 100 mM NaCl and B2 = 150 mM NaCl) and control (C = 0 mM) soils and impact of its extracts on weed Anagallis arvensis L. The main allelopathic compounds in Brassica were determined using gas chromatography-mass spectroscopy (GC-MS). The results indicated that A. arvensis was adversely affected by the aqueous extracts of B. nigra. These observations might be related to extracts induced oxidative stress indicated by superoxide (O 2 − ) production through nitroblue tetrazolium, cell integrity by Evans blue staining, malondialdehyde estimation by Schiff reagent, lipid peroxidation, lignin deposition, and antioxidant enzyme activities assay. We observed that soil salinity reduced the phytotoxicity of aqueous extract and decreased its potential. The presence of different bioactive compounds improved the natural herbicidal properties of B. nigra and it can be used in various medicinal and agricultural practices.

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Section: Introductionmentioning

confidence: 99%

Salinity-Induced Attenuation in Secondary Metabolites Profile and Herbicidal Potential of Brassica nigra L. on Anagallis arvensis L.

Khare

Singh

Niharika

et al. 2022

J Plant Growth Regul

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“…The GAs enhanced plant growth in several species under salt stress conditions (Tuna et al, 2008;Maggio et al, 2010;Nasri et al, 2012;Kandil et al, 2014). It has also been reported that the influence of salt stress on plant growth appears to be associated to the reduction of GAs synthesis, and that exogenous GAs could revert such decrease and induce cell division and/or elongation, leaf area enlargement, and photosynthetic rate (Saeidi-Sar et al, 2013;Niharika et al, 2021). In papaya the application of GAs or GAs and auxin mitigates the effects of salt stress on vegetative growth (Sá et al, 2020).…”

Section: Discussionmentioning

confidence: 95%

“…Gibberellins (GAs) are now well-known as plant growth regulators involved in seed germination, stem and internode elongation, leaf expansion, flower and fruit growth (Ubeda-Tomás et al, 2009;Nelissen et al, 2012;Taiz et al, 2014). Salt stress seems to affect plant growth through the reduction of GAs synthesis; however, exogenous GAs addition could revert such decrease and induce several physiological processes such as leaf area enlargement, cell division and/or elongation, photosynthetic rate, and upregulation of invertase activity (Saeidi-Sar et al, 2013;Niharika et al, 2021). In addition, exogenous GAs have been able to enhance the performance of seeds (Nimir et al, 2020) and plants under salt stress conditions (Aziz Khan et al, 2012;Iqbal and Ashraf, 2013;Xu et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Gibberellins improved plant growth in several species under salt stress conditions (Tuna et al, 2008;Maggio et al, 2010;Nasri et al, 2012;Kandil et al, 2014), and increased water use efficiency and stomatal conductance (gs) under moderate salinity (Maggio et al, 2010). Furthermore, it has been reported that GAs alleviate the negative impacts induced by salt excess through the increase of chlorophyll (chl) content, N use efficiency, nitrate reductase activity, and the absorption of mineral nutrient resulting in an increase of yield (Criado et al, 2017;Niharika et al, 2021). In flax plants subjected to salt stress, Khan et al (2010) reported that the mixture of gibberellic acid (GA3) and calcium chloride increased the accumulation of glycine betaine and proline, and consequently improved the osmotic adjustment.…”

Section: Introductionmentioning

confidence: 99%

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Mitigation of salt stress damages in Carica papaya L. seedlings through exogenous pretreatments of gibberellic acid and proline

Álvarez-Méndez

Urbano-Gálvez

Mahouachi

2022

Chil. j. agric. res.

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Salinity is a serious threat for global agriculture, especially in arid and semi-arid regions where its incidence leads to considerable damages in the crop growth and production. Carica papaya L. is currently one of the most cultivated fruit crops in the tropical and subtropical areas, and generally, papaya cultivars exhibit a moderate sensitivity to salinity, although such responses may depend on the genotypes. In the present study, papaya seedlings were subjected to salt stress (100 mM NaCl) for 41 d and to exogenous gibberellic acid (GA3; 0.1 mM) and proline (10 mM) pretreatments to evaluate plant physiological variables linked to stress responses. Analysis of the data (P < 0.05) showed a general decrease of plant growth parameters induced by solely salt stress compared to control, such as stem height (47%) and thickness (33%) and plant fresh and dry mass (84% and 83%, respectively), as well as a reduction in the stomatal opening (93%), chlorophylls (40%) and carotenoids (71%) concentration. By contrast, a significant increase was found in foliar and radicular proline levels under stress (87% and 47%). Exogenous foliar GA3 or proline respectively induced a better performance of plants under salt stress by increasing stomatal conductance (444% or 350%), stem height (142% or 144%) and plant biomass (49% or 41%) regarding solely stressed plants, and leading to pigments concentrations close to those from control plants. The results suggest that exogenous gibberellic acid and proline as growth regulator and osmo-regulator solute, respectively could increase papaya seedlings adaption against salt stress.

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“…The highest expression of GA 3 ox 1 23158 was at 0 • C, while the expression of gibberellin reached its maximum at −2 • C. This may be due to the fact that when the temperature dropped below 0 • C, the low temperature had severely restricted the enzyme activity associated with GA 3 ox 1 23158 expression, resulting in a decrease in its expression. At the same time, although the expression of gibberellin synthesis-related enzymes decreased, the activity of gibberellin degradation-related enzymes also decreased, leading to an increase in its accumulation in the plants, thus enhancing its role as a signal transducer and promoting the plants to initiate a series of physiological and biochemical responses corresponding to low temperature stress and improving the plants' cold resistance Niharika et al, 2020).…”

Section: Effects Of Low-temperature Treatment On Abscisic Acid and Gibberellin Content In Potato Plantsmentioning

confidence: 99%

The Effect of Low Temperature Stress on the Leaves and MicroRNA Expression of Potato Seedlings

et al. 2021

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In recent years, with the wanton destruction of the ecological environment by humans and the frequent occurrence of extreme bad weather, many places that should have been warm and blooming in spring have instead experienced the phenomenon of the “April blizzard,” which has seriously affected China's crops, especially spring potato production in most areas. Potato cultivars, especially potato seedlings, are sensitive to frost, and low temperature frost has become one of the most important abiotic stresses affecting potato production. Potato cold tolerance is regulated by a complex gene network. Although some low temperature resistant microRNAs have been identified, little is known about the role of miRNAs in response to low temperature stress in potato. Therefore, the objective of this study is to clarify the influence of low temperature stress on the miRNA expression of potato by comparing the expression differences of miRNA in potato which was treated with different low temperatures. For the study, 307 known miRNAs belonging to 73 small RNA families and 211 novel miRNAs were obtained. When the temperature decreased, the number of both known and novel miRNA decreased, and the minimum temperature was −2°C. Most of the miRNAs respond to low temperature, drought, and disease stress; some conserved miRNAs were first found to respond to low temperature stress in potato, such as stu-miR530, stu-miR156d, and stu-miR167b. The Gene Ontology, Kyoto Encyclopedia of Genes, and Genomes pathway enrichment analysis of 442 different expression miRNAs target genes indicated that there existed diversified low temperature responsive pathways, but Abscisic Acid was found likely to play a central coordinating role in response to low temperature stress in many metabolism pathways. Quantitative real-time PCR assays indicated that the related targets were negatively regulated by the tested different expression miRNAs during low temperature stress. The results indicated that miRNAs may play an important coordination role in response to low temperature stress in many metabolic pathways by regulating abscisic acid and gibberellin, which provided insight into the roles of miRNAs during low temperature stress and would be helpful for alleviating low temperature stress and promoting low temperature resistant breeding in potatoes.

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Mitigating Strategies of Gibberellins in Various Environmental Cues and Their Crosstalk with Other Hormonal Pathways in Plants: a Review

Cited by 28 publications

References 120 publications

Salinity-Induced Attenuation in Secondary Metabolites Profile and Herbicidal Potential of Brassica nigra L. on Anagallis arvensis L.

Salinity-Induced Attenuation in Secondary Metabolites Profile and Herbicidal Potential of Brassica nigra L. on Anagallis arvensis L.

Mitigation of salt stress damages in Carica papaya L. seedlings through exogenous pretreatments of gibberellic acid and proline

The Effect of Low Temperature Stress on the Leaves and MicroRNA Expression of Potato Seedlings

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