Plant response to drought stress simulated by ABA application: Changes in chemical composition of cuticular waxes

Macková, Jana; Vašková, M.; Macek, Petr; Hronková, Marie; Schreiber, Lukas; Šantrůček, Jiří

doi:10.1016/j.envexpbot.2010.06.005

Cited by 67 publications

(39 citation statements)

References 45 publications

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“…In addition to transpiration through the stoma, plants can also dissipate water through the cuticle. Macková et al (2010) observed that plants treated with ABA (drought stress simulation) reduced cuticular transpiration. Macková et al (2010) observed that plants treated with ABA (drought stress simulation) reduced cuticular transpiration.…”

Section: Discussionmentioning

confidence: 99%

Physiological and Morphological Basis of Improved Water‐Use‐Efficiency in Wheat from Partial Root‐Zone Drying

et al. 2014

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Water‐saving breeding and cultivation of winter wheat (Triticum aestivum L.) have always been among the important missions in North China. But there is still a dispute on the regulation of water use in winter wheat. A pot experiment was conducted to investigate the physiological and morphological mechanisms of water use in two cultivars of winter wheat (KN9204 and drought‐tolerant LH2) via partial root‐zone drying (PRD). The results indicated that the weight of 1000 grains was higher under PRD conditions for both cultivars. Total water consumption per plant significantly decreased by 11.6 and 17.3% for KN9204 and LH2, respectively, and water‐use efficiency (WUE) significantly increased by 17.2 and 20.3% under PRD. The net photosynthetic rate did not differ between PRD and full irrigation (FI) for either cultivar; however, transpiration rate was lower under PRD than FI, which improved WUE at the leaf level. Flag leaf water potential was significantly lower under PRD than FI for both cultivars, while water content was similar for both treatments. The soluble sugars content of leaves of KN9204 was higher under PRD than FI, while the proline content was 45.9% (KN9204) and 15% (LH2) higher under PRD. Stomatal density increased under PRD, but stomatal width and area declined. Overall, the two types of winter wheat had both common and individual means of improving WUE under PRD conditions. The results would further improve the theoretical underpinning of water‐saving breeding and cultivation in winter wheat.

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Section: Discussionmentioning

confidence: 99%

Physiological and Morphological Basis of Improved Water‐Use‐Efficiency in Wheat from Partial Root‐Zone Drying

et al. 2014

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“…The authors demonstrated that enhancing root CKs synthesis modified the shoot hormonal and ionic status, thus ameliorating salinity-induced decreases in growth and yield. In concordance, tobacco plants showing root specifically increased cytokinindehydrogenase/oxidase (CKX) gene expression, indicated that overexpression of CKX1 is linked to greater root system and dwarf shoots improving the salt stress-tolerance [80]. However, a more in-depth understanding on the CK functioning/signaling mechanisms is required to allow us to explore its possible role in alleviating the adverse effects of drought and salinity.…”

Section: Effect Of Ck On Plant Growth Responses Under Drought and Salmentioning

confidence: 94%

Alterations of Endogenous Hormonal Levels in Plants under Drought and Salinity

Llanes¹,

Andrade²,

Alemano³

et al. 2016

AJPS

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The phytohormones are pivotal chemical messengers produced within the plant that regulate its growth and development, and responses to environmental stimuli. Drought and salinity are adverse environmental factors that disturb the plant hormonal balance. Accordingly, these hormonal fluctuations modify the cellular dynamic and hence they play a central role in regulating plant growth responses to abiotic stresses such as drought and salinity. The present review gives an update about the alterations of endogenous phytohormones such as abscisic acid (ABA), auxins (Aux), cytokinins (CKs), ethylene (ET), gibberellins (GAs), jasmonates (JAs), salicylic acid (SA), brassinosteroids (BRs), strigolactones (SLs) and nitric oxide (NO) that occur as part of the adaptative responses of plant against drought and salt stresses. Better understanding of the endogenous hormonal changes during the plant response to both abiotic stresses will contribute, in part, to the development of stress-tolerant plants.

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“…Macková et al . () found that the addition of abscisic acid (ABA, simulating drought stress) to Lepidium sativum increased the chain length of cuticular waxes (but not the total amounts). Bi et al .…”

Section: Environmental and Ecological Variation In Minimum Conductancementioning

confidence: 99%

On the minimum leaf conductance: its role in models of plant water use, and ecological and environmental controls

et al. 2018

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Contents Summary I. Introduction II. Comparison of various definitions and measurement techniques of minimum conductance III. Cuticular conductance IV. Contribution of stomata V. Environmental and ecological variation in minimum conductance VI. Use of minimum conductance in models VII. Conclusions Acknowledgements References SUMMARY: When the rate of photosynthesis is greatly diminished, such as during severe drought, extreme temperature or low light, it seems advantageous for plants to close stomata and completely halt water loss. However, water loss continues through the cuticle and incompletely closed stomata, together constituting the leaf minimum conductance (g ). In this review, we critically evaluate the sources of variation in g , quantitatively compare various methods for its estimation, and illustrate the role of g in models of leaf gas exchange. A literature compilation of g as measured by the weight loss of detached leaves is presented, which shows much variation in this trait, which is not clearly related to species groups, climate of origin or leaf type. Much evidence points to the idea that g is highly responsive to the growing conditions of the plant, including soil water availability, temperature and air humidity - as we further demonstrate with two case studies. We pay special attention to the role of the minimum conductance in the Ball-Berry model of stomatal conductance, and caution against the usual regression-based method for its estimation. The synthesis presented here provides guidelines for the use of g in ecosystem models, and points to clear research gaps for this drought tolerance trait.

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Plant response to drought stress simulated by ABA application: Changes in chemical composition of cuticular waxes

Cited by 67 publications

References 45 publications

Physiological and Morphological Basis of Improved Water‐Use‐Efficiency in Wheat from Partial Root‐Zone Drying

Physiological and Morphological Basis of Improved Water‐Use‐Efficiency in Wheat from Partial Root‐Zone Drying

Alterations of Endogenous Hormonal Levels in Plants under Drought and Salinity

On the minimum leaf conductance: its role in models of plant water use, and ecological and environmental controls

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