Abscisic Acid and Other Naturally Occurring Plant Growth Inhibitors

Sembdner, G.; Dathe, W.; Kefeli, V. I.; Kutáček, M.

doi:10.1007/978-3-642-67720-5_25

Cited by 10 publications

(7 citation statements)

References 30 publications

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“…First, it is readily metabolised to bound forms including the glucosyl ester (91) and other glycosides (92,120) . The metabolic relationships and controls of interconversions between the free acid and bound forms are not fully understood, but the concentration of bound ABA may exceed that of the free acid in the leaf (153,156), so any study which measures only free acid may present an incomplete picture .…”

Section: A Bscisic Acidmentioning

confidence: 99%

Plant growth regulators and virus infection: A critical review

Fraser¹,

Whenham²

1982

Plant Growth Regul

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Virus infection can severely inhibit plant growth and distort development . This article reviews changes in plant growth regulator metabolism caused by infection . In general, virus infection decreases auxin and gibberellin concentrations and increases abscisic acid concentration . Ethylene production is stimulated in necrotic or chlorotic reactions to infection, but not where the virus spreads systemically without necrosis . While these broad trends are true for most host-virus combinations studied, several situations are recorded where the virus had other effects on growth substance concentration . Cytokinin changes do not show any common pattern : both increases and decreases after infection have been reported .The extent to which virus-induced changes in growth substance concentration could be responsible for observed alterations in host growth and development is discussed . While changes in abscisic acid, gibberellin and ethylene production seem potentially important, the experimental evidence does not provide conclusive proof for control of growth by these changes .The numerous investigations of effects of exogenous regulators on virus multiplication and pathogenesis are reviewed . Different regulators, or the same regulator applied at different times or concentrations, had very diverse effects, and in some cases did significantly alter virus multiplication and pathogenesis . However, such studies seem to have yielded disappointingly little understanding of the biochemistry of the host-virus interaction, and the possible involvement of growth substances in this .Possible uses of plant growth regulators in chemotherapy of virus disease, and their possible involvement in natural or induced resistance mechanisms are discussed .

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Section: A Bscisic Acidmentioning

confidence: 99%

Plant growth regulators and virus infection: A critical review

Fraser¹,

Whenham²

1982

Plant Growth Regul

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“…Isolation of HMG-HOABA (1) and MeHMG-HOABA (2). Fresh fruits (19 kg) of R. pseudacacia, harvested in July 1977, were soaked in methanol, left at 5°C for 2 months, and then filtered.…”

Section: Methodsmentioning

confidence: 99%

“…Concentration of 1 in the crude extract was checked by HPLC (YMC-A311, 4.6 x 100mm, 40% methanol containing 0.1% acetic acid, 2.0ml/min, UV 254). Preparation of standards of MeHMG-HOABA (2) and diMeHMG-HOABA (4). HMG-HOABA (1, 4.3mg) was dissolved in 2 ml of methanol containing 0.1 M HCI, and stood at 42°C for I hr.…”

Section: Methodsmentioning

confidence: 99%

“…In an investigation of the natural metabolites of ABA in plants belonging to the Leguminosae, we found a novel conjugate of hydroxyabscisic acid, tentatively named MeHMG-HOABA (2), along with a known conjugate, fJ-hydroxy-fJ-methylglutarylhydroxyabscisic acid (HMG-HOABA; 1)8,9) in the immature seeds of Robinia pseudacacia. Author to whom correspondence should be addressed.…”

Section: Isolation and Structure Of A New Conjugate From R Pseudacaciamentioning

confidence: 99%

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Characterization of a New Abscisic Acid-conjugated Metabolite in Crude Plant Extract by Desorption Chemical Ionization and Secondary Ion Mass Spectrometry

Takeda¹,

Harada²,

Tatematsu³

et al. 1987

Agricultural and Biological Chemistry

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A new conjugate of hydroxyabscisic acid, tentatively named MeHMG-HOABA, along with a known conjugate, p-hydroxy-p-methylglutarylhydroxyabscisic acid (HMG-HOABA), were isolated from immature seeds of Robinia pseudacacia and determined. Evidence for the occurrence of MeHMG-HOABA as a natural metabolite, and not as an artifact, was provided by desorption chemical ionization (Del) and secondary ion mass spectrometry (SIMS) in conjunction with the technique of linked scanning at constant BIE. The mass spectrometric technique allows the detection and characterization of the conjugates to be analysed even in a crude plant extract.

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“…Sembdner et al (1980) and Milborrow (1978) found that the level of ABA bound as glucosyl esters and glucosides may exceed free ABA in the leaf. The sequestering of ABA by chloroplasts is another reason why difficulties arise in interpreting its true role in infected plants.…”

Section: Fungusmentioning

confidence: 97%

Fungal Phytohormones in Pathogenic and Mutualistic Associations

Tudzynski

1997

Plant Relationships

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Abscisic Acid and Other Naturally Occurring Plant Growth Inhibitors

Cited by 10 publications

References 30 publications

Plant growth regulators and virus infection: A critical review

Plant growth regulators and virus infection: A critical review

Characterization of a New Abscisic Acid-conjugated Metabolite in Crude Plant Extract by Desorption Chemical Ionization and Secondary Ion Mass Spectrometry

Fungal Phytohormones in Pathogenic and Mutualistic Associations

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