Low-temperature stress: is phytohormones application a remedy?

Khan, Tanveer Alam; Fariduddin, Qazi; Yusuf, Mohammad

doi:10.1007/s11356-017-9948-7

Cited by 58 publications

(40 citation statements)

References 216 publications

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“… Kaya et al (2006) reported that drought tolerance can also be enhanced by the application of GA 3 in maize. Exogenous GA 3 application breaks the rosette by rapid enlargement of differentiated tissues under cold stress ( Khan et al, 2017 ). Similarly, JA has been reported to trigger the plant defense responses to abiotic stresses including drought and chilling ( Pauwels et al, 2009 ; Seo et al, 2011 ).…”

Section: Management Strategiesmentioning

confidence: 99%

Chilling and Drought Stresses in Crop Plants: Implications, Cross Talk, and Potential Management Opportunities

et al. 2018

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Plants face a combination of different abiotic stresses under field conditions which are lethal to plant growth and production. Simultaneous occurrence of chilling and drought stresses in plants due to the drastic and rapid global climate changes, can alter the morphological, physiological and molecular responses. Both these stresses adversely affect the plant growth and yields due to physical damages, physiological and biochemical disruptions, and molecular changes. In general, the co-occurrence of chilling and drought combination is even worse for crop production rather than an individual stress condition. Plants attain various common and different physiological and molecular protective approaches for tolerance under chilling and drought stresses. Nevertheless, plant responses to a combination of chilling and drought stresses are unique from those to individual stress. In the present review, we summarized the recent evidence on plant responses to chilling and drought stresses on shared as well as unique basis and tried to find a common thread potentially underlying these responses. We addressed the possible cross talk between plant responses to these stresses and discussed the potential management strategies for regulating the mechanisms of plant tolerance to drought and/or chilling stresses. To date, various novel approaches have been tested in minimizing the negative effects of combine stresses. Despite of the main improvements there is still a big room for improvement in combination of drought and chilling tolerance. Thus, future researches particularly using biotechnological and molecular approaches should be carried out to develop genetically engineered plants with enhanced tolerance against these stress factors.

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Section: Management Strategiesmentioning

confidence: 99%

Chilling and Drought Stresses in Crop Plants: Implications, Cross Talk, and Potential Management Opportunities

et al. 2018

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“…This is possibly due to the higher carbohydrate content used as an energy reserve and the role of plant hormones in regulating plant adaptation to low temperatures [70]. Under low-temperature stress, cytokinin content in Carpobrotus edulis increases [71] and an Arabidopsis mutant amp1 with higher cytokinin levels can display a better relative growth rate and higher plant yield than wild-type [72,73]. At the same time, overexpression of AtCOR15a:ipt in sugarcane improves tolerance to low temperatures by slowing leaf senescence and reducing membrane damage, avoiding severe productivity loss and freezing injury [74].…”

Section: Cold Stress Responsementioning

confidence: 99%

Research Progress on the Roles of Cytokinin in Plant Response to Stress

Liu

Zhang

Meng

et al. 2020

IJMS

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Cytokinins promote plant growth and development under normal plant growth conditions and also play an important role in plant resistance to stress. Understanding the working mechanisms of cytokinins under adverse conditions will help to make full use of cytokinins in agriculture to increase production and efficiency of land use. In this article, we review the progress that has been made in cytokinin research in plant response to stress and propose its future application prospects.

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“…Cucumber is widely cultivated in greenhouses in northern China during the winter and spring seasons. Low temperature is a crucial environmental factor that limits the development and productivity of cucumber crops [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Adaptation of cucumber seedlings to low temperature stress by reducing nitrate to ammonium during it’s transportation

et al. 2021

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Background Low temperature severely depresses the uptake, translocation from the root to the shoot, and metabolism of nitrate and ammonium in thermophilic plants such as cucumber (Cucumis sativus). Plant growth is inhibited accordingly. However, the availability of information on the effects of low temperature on nitrogen transport remains limited. Results Using non-invasive micro-test technology, the net nitrate (NO3−) and ammonium (NH4+) fluxes in the root hair zone and vascular bundles of the primary root, stem, petiole, midrib, lateral vein, and shoot tip of cucumber seedlings under normal temperature (NT; 26 °C) and low temperature (LT; 8 °C) treatment were analyzed. Under LT treatment, the net NO3− flux rate in the root hair zone and vascular bundles of cucumber seedlings decreased, whereas the net NH4+ flux rate in vascular bundles of the midrib, lateral vein, and shoot tip increased. Accordingly, the relative expression of CsNRT1.4a in the petiole and midrib was down-regulated, whereas the expression of CsAMT1.2a–1.2c in the midrib was up-regulated. The results of 15N isotope tracing showed that NO3−-N and NH4+-N uptake of the seedlings under LT treatment decreased significantly compared with that under NT treatment, and the concentration and proportion of both NO3−-N and NH4+-N distributed in the shoot decreased. Under LT treatment, the actual nitrate reductase activity (NRAact) in the root did not change significantly, whereas NRAact in the stem and petiole increased by 113.2 and 96.2%, respectively. Conclusions The higher net NH4+ flux rate in leaves and young tissues may reflect the higher NRAact in the stem and petiole, which may result in a higher proportion of NO3− being reduced to NH4+ during the upward transportation of NO3−. The results contribute to an improved understanding of the mechanism of changes in nitrate transportation in plants in response to low-temperature stress.

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Low-temperature stress: is phytohormones application a remedy?

Cited by 58 publications

References 216 publications

Chilling and Drought Stresses in Crop Plants: Implications, Cross Talk, and Potential Management Opportunities

Chilling and Drought Stresses in Crop Plants: Implications, Cross Talk, and Potential Management Opportunities

Research Progress on the Roles of Cytokinin in Plant Response to Stress

Adaptation of cucumber seedlings to low temperature stress by reducing nitrate to ammonium during it’s transportation

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