Die Verteilung der freien Aminosäuren in der Pflanze und ihre Beeinflussung durch photoperiodische Induktion (Untersuchungen an Kalanchoë Blossfeldiana)

Madan, C. L.

doi:10.1007/bf01976165

Cited by 16 publications

(3 citation statements)

References 36 publications

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“…One approach for the understanding of the mechanism of flowering in higher plants is to study endogenous changes of metabolites during the process of flower induction. Nitrogenous metabolites such as free amino acids, soluble nitrogen and protein nitrogen were studied by Madan (1956), Eowden and Steward (1957), and Crane and Steward (1962). DNA (Bernier et al 1970), RNA (Yoshida et al 1967), organic acids (Becker 1953, Neyland andThimann 1956), and keto acids (Rabson and Steward 1962) were studied under various photoperiods.…”

Section: Introductionmentioning

confidence: 99%

Studies on the Flowering Mechanism in Lemna

Maeng

Khudairi

1973

Physiologia Plantarum

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A nitrogen source was needed for the flowering of Lemna gibba L., a long‐day plant, and L. perpusilla Torr., a shortday plant. The level of endogenous amino acids analyzed by an Amino Acid Analyzer, rose during the first few inductive cycles, but was reduced during later stages of the flowering process. Serine and threonine levels increased during the light period and decreased during the dark period in L. perpusilla. Exogenous serine and threonine added to the culture medium at 10−6M increased the rate of flowering by more than 35% over the controls. Cysteine inhibited flowering, while other amino acids had little or no promotive effect on flowering. Serine and threonine increased flowering rate in L. perpusilla only when added during a dark period of the inductive cycle. The addition of amino acids during a light period not followed by a dark period had no effect on flowering.

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Section: Introductionmentioning

confidence: 99%

Studies on the Flowering Mechanism in Lemna

Maeng

Khudairi

1973

Physiologia Plantarum

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“…The evidence supporting the view that ornithine occurs free in plants is also rather weak. It has been identified, but only by chromatographic methods (Philpott, 1948;Miettinen & Virtanen, 1952; Madan, 1956). In contrast, its 6-N-acetyl derivative (XXXVI) forms 10% of the dry weight of the roots of Corydalis ochotensis, a member of the Fumariaceae (Manske, 1937), and it has been isolated as its dihydrochloride by Virtanen & Link0 (1955b) from the leaves of the bird's-nest fern, Asplenium nidus, where it accounts for 10 % of the soluble nitrogen.…”

Section: S-methyl-l-cysteinementioning

confidence: 99%

New Amino Acids of Plants

Fowden¹

1958

Biological Reviews

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“…It was shown that there was a fall in auxin content, and an increase in DNA/RNA ratio, protein and carbohydrate contents. To understand differentiation of reproductive organs, the endogenous changes in nitrogenous metabolites and related enzymes have also been sttjdied (Madan 1956, Fowden and Steward 1957, Bernier et ai. 1970, Maeng and Khudairi 1973, Hedley and Stoddard 1971.…”

Section: Introductionmentioning

confidence: 99%

Aminotransferase Activity in Relation to Floral Differentiation in Wheat Plants

Srivastava

Sirohi

1975

Physiologia Plantarum

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The present investigation was carried out to study the transamination reaction in relation to floral differentiation in wheat (cv. NP 876) under threephotoperiodicconditions. Threeselected, aminotransferases natnely glutamic-glyoxylate, glutatnic-pyruvate, and alanine-glyoxylate were studied in the top young leaves at various growth and developmental stages. The activity of all the three systems increased progressively during the vegetative phase till the plants produced reproductive buds. When flower primordia started differentiating, there was a sharp decrease in the aminotransferase activity followed hy an increase during anthesis period. Photoperiodic treattnents clearly show that even when the vegetative period of the plant is shortened considerably by long day or extended by short day, the aminotransferase activity remains closely associated with different developmental processes.

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Die Verteilung der freien Aminosäuren in der Pflanze und ihre Beeinflussung durch photoperiodische Induktion (Untersuchungen an Kalanchoë Blossfeldiana)

Cited by 16 publications

References 36 publications

Studies on the Flowering Mechanism in Lemna

Studies on the Flowering Mechanism in Lemna

New Amino Acids of Plants

Aminotransferase Activity in Relation to Floral Differentiation in Wheat Plants

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