Current theories for mechanism of stomatal opening: Influence of blue light; mesophyll cells, and sucrose

Kim, Dae Jae; Lee, Joon Sang

doi:10.1007/bf03030704

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…Control of the stomatal aperture is essential for the plant adaptation to changes in its ambient environment. Several mechanisms for the regulation of stomatal aperture have been proposed (Kim and Lee 2007 ; Araújo et al 2011 ). It has been found that O 2 - and other activated oxygen species are involved in the regulation of stomatal movement (Purohit et al 1994 ).…”

Section: Role Of L-ascorbate In Salinity and Drought Tolerancementioning

confidence: 99%

Role of L-ascorbate in alleviating abiotic stresses in crop plants

2014

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L-ascorbic acid (vitamin C) is a major antioxidant in plants and plays a significant role in mitigation of excessive cellular reactive oxygen species activities caused by number of abiotic stresses. Plant ascorbate levels change differentially in response to varying environmental stress conditions, depending on the degree of stress and species sensitivity. Successful modulation of ascorbate biosynthesis through genetic manipulation of genes involved in biosynthesis, catabolism and recycling of ascorbate has been achieved. Recently, role of ascorbate in alleviating number of abiotic stresses has been highlighted in crop plants. In this article, we discuss the current understanding of ascorbate biosynthesis and its antioxidant role in order to increase our comprehension of how ascorbate helps plants to counteract or cope with various abiotic stresses.Electronic supplementary materialThe online version of this article (doi:10.1186/1999-3110-55-38) contains supplementary material, which is available to authorized users.

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Section: Role Of L-ascorbate In Salinity and Drought Tolerancementioning

confidence: 99%

Role of L-ascorbate in alleviating abiotic stresses in crop plants

2014

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“…Stomata on leaves normally react to light by opening (Kim and Lee, 2007;Seo et al, 2008;van Doorn, 1997) such that light promotes water loss (Kofranek and Halevy, 1972). Carpenter and Rasmussen (1973) reported that roses held under constant light or alternating 12 h light and 12 h dark lost five times more water than those held in complete darkness.…”

Section: Resultsmentioning

confidence: 99%

Continuous Automatic Measurement of Water Uptake and Water Loss of Cut Flower Stems

Lü¹,

Huang²,

Li³

et al. 2011

horts

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In studying the postharvest water relations of cut flowers, researchers aim to determine rates of water uptake and water loss along with changes in fresh weight. An automatic apparatus was devised for continuous monitoring of these indices. The novel apparatus consists of two balances automatically recording mass at a relatively high data acquisition rate (min−1), a personal computer, two containers, and plastic tubing. The apparatus is accurate, labor-saving, and real-time. It enabled dynamic synchronous recording of water uptake as well as fresh weight of the cut flower stem, from which precise water uptake loss rates during vase life can be accurately determined. Rates of water uptake and water loss of individual cut rose (Rosa hybrida cv. Movie Star) stems were measured using the apparatus under alternating 12-h light and dark periods. Both water uptake and water loss rates fluctuated with the light to dark shift over 120 h of observation. Stem fresh weight increased rapidly over the first 40 h of vase period and decreased gradually thereafter. Cut lily (Lilium hybrida cv. Yellow Overlord) stems showed similar trends in water uptake and water loss rate to cut rose stems. The accuracy and sensitivity of the new apparatus was validated by comparison with manual weighing using a balance at 2-h intervals under alternating 12-h light and dark periods over 108 h. The apparatus described here constitutes a suitable method for direct measurement of water uptake and fresh weight, including capturing relatively rapid water balance responses to changes in the postharvest environment.

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“…Presently, there are two main components that cause the stomata movement, namely potassium (K + ) and sucrose. The potassium content of guard cells is much higher than that of epidermal cells around the time the stomata open [10,11]. Sucrose plays an important role in the osmoregulation of the guard cells [12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Sound Vibration towards the Stomata Opening Area via Edge Detection Analysis

2022

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The effect of sound vibration (SV) towards plants had been studied for more than 30 years. Many results confirmed that SV influenced various parts of plants, e.g.: the stomata. However, the scientific community was still in doubt of these results. Hence, it is now a matter of giving further proofs and/or insights using new methods. This study aimed to determine the stomata pore movement influenced by SV with new observation and analysis technique based on edge detection. We had directly observed the abaxial stomata of Rhoeo discolor plant exposed by single SV frequencies of 0 Hz to 7000 Hz with an interval of 1000 Hz. The main device used in the observation was a microscope. The observation was conducted before, during, and after the SV exposure. The measurement of the stomata pore area utilized an image capture, which was then analyzed with edge detection technique. These edges were used as an indicator in the calculation of the stomata pore area in the pixel unit. The result showed that SV with frequency of 6000 Hz produced the largest stomata pore area, whereas the frequencies of 2000 Hz and 3000 Hz gave smaller stomata pore areas. Therefore, a single frequency of SV influenced the stomata pore area based on the edge detection analysis.

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Current theories for mechanism of stomatal opening: Influence of blue light; mesophyll cells, and sucrose

Cited by 9 publications

References 31 publications

Role of L-ascorbate in alleviating abiotic stresses in crop plants

Role of L-ascorbate in alleviating abiotic stresses in crop plants

Continuous Automatic Measurement of Water Uptake and Water Loss of Cut Flower Stems

Effect of Sound Vibration towards the Stomata Opening Area via Edge Detection Analysis

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