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Ogasawara, Nobuyoshi; Hiramasu, Takaaki; Ishiyama, Kaneyoshi; Fushimi, Hideki; Suzuki, Hiroshi; Takagi, H.

doi:10.1023/a:1017593815746

Cited by 12 publications

(2 citation statements)

References 10 publications

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“…The leafy vegetables grown with this rate of GA 3 in the MNS responded with accelerated stem elongation that was accompanied by pale green and narrowed leaves in lettuce plants and by a relatively rapid flower development in rocket plants. It is well known that GA 3 treatments promote cell division and cell enlargements that may result in stem elongation [49][50][51][52] and that exogenous gibberellins can break the rosette or enhance and control the flowering of rosette plants by means of rapid enlargement of already differentiated tissues [53]. GAs promote cytogenesis and cell elongation in stems and can also stimulate flowering when they reach the shoot apex [54,55].…”

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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“…It enhances the bolting and flowering in Limonium gmelinii plants when GA sprayed at 500 mg L-1 (Guda et al, 2000). GA inhibits the sucrose formation from starch and mannitol (Ogasawara et al, 2001). This outcome suggests that the GA application enhances the rapid tissue enlargement and differentiated to resist the cold stress in plants (Jacobsen and Olszewski, 1993).…”

Section: Hormonal Regulation Of Growth Responses Under Chilling Stress Conditionmentioning

confidence: 93%

Plant Hormone-Mediated Regulation of Stress Responses in Fruit Crops- A Review

Rachappanavar¹,

Kumar²,

Sharma³

et al. 2020

Preprint

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One of the challenges facing fruit crop production globally is the regional climate regimes are becoming more unpredictable year after year leading to various type of stress. The exact impact of these stress on fruit crops is difficult to predict. Plant hormones can improve tolerance against abiotic stresses by inhibiting or reducing the active oxygen (AOS) accumulation, electrolyte leakage, induce the expression of stress-specific genes, etc. Among the major hormones produced by the plants, ABA, SA, JA and ET are known to play major roles in mediating plant defence response against various abiotic stresses. Crosstalk networks among phytohormones mediated by diverse key regulators have been extensively investigated and documented in various research investigations. Many canvassers' recommended the use of phytohormones to counteract abiotic stress as increasing stress tolerance through conventional breeding methods requires longer time and also leads to inadequate adoptability of such cultivars under diverse cultivation environment for validation of performance and heritability. In this review, we summarize the roles of the major phytohormones present in fruit crops in regulating abiotic stresses responses with special focus on the significance of crosstalk between various hormones at biochemical and molecular level in generating a sophisticated and efficient stress response.

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