Influence of Gibberellic Acid on Stomatal Movement

Göring, H.; Koshuchowa, Svetlana; Deckert, Cornelia

doi:10.1016/s0015-3796(11)80235-0

Cited by 24 publications

(16 citation statements)

References 19 publications

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“…Maggio et al [39] reported that the application of GA 3 decreased stomatal resistance and improved efficiency of water use in tomato plants. The mechanism that links GA 3 application with stomata opening is not well known; nevertheless, the increase of stomatal conductance due to GA 3 has been related to the higher accumulation of carbohydrates and potassium in guard cells of treated plants, that may influence speed and degree of stomata opening [97]. Even if the higher stomatal conductance of treated plants determines an increase of transpiration rates and water consumption, it also promotes gas exchange and photosynthetic CO 2 assimilation, thus increasing dry matter accumulation and WUE.…”

Section: Discussionmentioning

confidence: 99%

Effect of Gibberellic Acid on Growth, Yield, and Quality of Leaf Lettuce and Rocket Grown in a Floating System

et al. 2019

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Gibberellins (GAs) are growth hormones strongly involved in a wide variety of physiological activities. Currently, gibberellins are commercially used to enhance phenotypic characteristics, earliness, and productivity of many vegetable and ornamental crops. In this work, the efficacy of supplementation of low levels of gibberellic acid (0, 10−8, 10−6, and 10−4 M GA3) through the mineral nutrient solution of a floating system on yield and quality of leaf lettuce and rocket plants was tested. The marketability of plants was lost when 10−4 M GA3 was added to the mineral nutrient solution. This study demonstrated that the addition of 10−4 M GA3 exceeded the acceptable threshold for use in hydroponics production systems. Below the concentration of 10−4 M, the presence of GA3 in the mineral nutrient solutions (MNS), especially at 10−6 M GA3, stimulated plant growth and enhanced the yield. Various morphological and physiological traits were enhanced by GA3 treatments (biomass accumulation, leaf expansion, stomatal conductance, water use efficiency (WUE), Nitrogen use efficiency (NUE), etc.), with superimposable trends in both lettuce and rocket. The addition of 10−6 M GA3 to the nutrient solution of a hydroponic floating system can promote growth and quality of lettuce and rocket plants.

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Section: Discussionmentioning

confidence: 99%

Effect of Gibberellic Acid on Growth, Yield, and Quality of Leaf Lettuce and Rocket Grown in a Floating System

et al. 2019

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“…48 Gibberellins (GAs) are responsible for the opening of stomata which maintains stomatal opening/closing ratio in tolerance level during dehydration stress in plants. 51 Though all kinds of plant hormones are responsible for regulating reoxygenation or dehydration stress but their complete crosstalk in plants at post-waterlogging stress is little known. But it is the final message that all these hormones are either responsible for opening/closing of stomata or detoxification of ROS through different physiological and signaling pathways to overcome the reoxygenation or dehydration stress in plants under post-waterlogging condition.…”

Section: Post-waterlogging Stress In Plantsmentioning

confidence: 99%

Hormone dependent survival mechanisms of plants during post-waterlogging stress

Bashar

2018

Plant Signaling & Behavior

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Waterlogging stress has two phases like waterlogging phase and post-waterlogging phase where both are injurious to plants. Susceptible plants normally die at post-waterlogging phase due to damaged root system, sudden rexoygenation, dehydration and photoinhibition of the desubmerged tissues. Formation of reactive oxygen species (ROS) is the main result of reoxygenation stress that can cause oxidative damage of the functional tissues responsible for normal physiological activities. There are almost all types of hormones responsible to recover plants from these destructive phenomenons. Among these hormones ethylene and abscisic acid (ABA) are the main regulators to overcome the reoxygenation and drought like stresses in plants at post-waterlogging condition. The balanced crosstalk among the hormones is highly important for the survival of plants at these stresses. So this paper is completely a precise summary of hormonal homeostasis of post-waterlogged plants through physiological, biochemical and signaling pathways. ARTICLE HISTORY

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“…Exogenous GA application appears to have little or no effect on stomatal apertures in Arabidopsis (Tanaka et al 2006). Under darkness, GA application led to transient stomatal opening in Vicia faba and Fritilaria imperialis (Göring et al 1990) and promoted stomatal opening in isolated epidermal strips of Commelina benghalensis L. (Santakumari and Fletcher 1987). Also, in a study investigating response to water stress, GA-mediated stomatal response has been examined in GA-deficient tomato plants.…”

Section: Gibberellins (Gas)mentioning

confidence: 99%

Hormone interactions in stomatal function

2008

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Research in recent years on the biology of guard cells has shown that these specialized cells integrate both extra- and intra-cellular signals in the control of stomatal apertures. Among the phytohormones, abscisic acid (ABA) is one of the key players regulating stomatal function. In addition, auxin, cytokinin, ethylene, brassinosteroids, jasmonates, and salicylic acid also contribute to stomatal aperture regulation. The interaction of multiple hormones can serve to determine the size of stomatal apertures in a condition-specific manner. Here, we discuss the roles of different phytohormones and the effects of their interactions on guard cell physiology and function.

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Influence of Gibberellic Acid on Stomatal Movement

Cited by 24 publications

References 19 publications

Effect of Gibberellic Acid on Growth, Yield, and Quality of Leaf Lettuce and Rocket Grown in a Floating System

Effect of Gibberellic Acid on Growth, Yield, and Quality of Leaf Lettuce and Rocket Grown in a Floating System

Hormone dependent survival mechanisms of plants during post-waterlogging stress

Hormone interactions in stomatal function

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