Changes in diffusible indole-3-acetic acid from various parts of tulip plant during rapid elongation of the flower stalk

Xu, Rong-Yan; Niimi, Yoshiji; Ohta, Yuuki; Kojima, Kazunobu

doi:10.1007/s10725-007-9230-y

Cited by 4 publications

(3 citation statements)

References 18 publications

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“…Endogenous levels of IAA in the 4 th internode in the treatment of morphactin applied at the 3rd node of tulips was highest among the samples after the treatment of auxin polar transport inhibitors (Fig. 3), suggesting strongly that polar transport of endogenous IAA produced in pistils (Xu et al, 2008) was almost completely inhibited by the application of morphactin compared to that of NPA and TIBA. Saniewski and Węgrzynowicz-Lesiak (1993) have reported that a continuous supply of auxin is necessary for tulip stem growth.…”

Section: Endogenous Levels Of Auxin In Tulip Stems After the Treatmenmentioning

confidence: 96%

“…Saniewski and Węgrzynowicz-Lesiak (1993) have reported that a continuous supply of auxin is necessary for tulip stem growth. Xu et al (2008) examined diffusible IAA, from various parts of tulips, during rapid elongation of the flower stalk using GC-MS. The amount of diffusible IAA from different organs followed the order of that of the inter-nodes>flower organs>leaves at that time.…”

Section: Endogenous Levels Of Auxin In Tulip Stems After the Treatmenmentioning

confidence: 99%

“…They also suggested, that the top (the 4 th internode) was probably more important than the flower, in the production of IAA accountable for rapid elongation of the flower stalk. Xu et al (2008) also described that it is possible that before the beginning of the rapid elongation stage, the flower exudes higher levels of IAA than does each internode, acting as the major source of auxins. Indole-3-acetic acid moves out of plant cells thorough an efflux carrier apparatus that is sensitive to synthetic inhibitors of auxin transport, NPA, TIBA and morphactin, but the mechanism by which auxin transport inhibitors control auxin efflux is not fully known (Muday and DeLong, 2001).…”

Section: Endogenous Levels Of Auxin In Tulip Stems After the Treatmenmentioning

confidence: 99%

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Morphactin Substantially Induced the Fourth Internode Growth in Decapitated Tulips: Relevance to Endogenous Levels of Indole-3-Acetic Acid

Ueda

Góraj

Wegrzynowicz-Lesiak

et al. 2012

Journal of Fruit and Ornamental Plant Research

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Important role of auxin polar transport inhibitors such as TIBA (2,3,5- triiodobenzoic acid), NPA (N-(1-naphthyl)phthalamic acid) and morphactin (methyl 2-chloro-9-hydroxyfluorene-9-carboxylate) in stem growth of tulips was intensively studied. After the application of morphactin above the 3rd node of decapitated tulips, the stimulated growth of the 4th internode was clearly observed. On the other hand, NPA and TIBA were slightly effective in stimulating the 4th internode growth of tulips. Endogenous levels of IAA in the 4th internode after the treatment of auxin polar transport inhibitors were determined using gas-liquid chromatography-mass spectrometry (GC-MS) and gas-liquid chromatography-mass spectrometry selected ion monitoring system (GC-SIM) with deuterium labelled IAA (Indole-2,4,5,6,7-d5-3- acetic acid, d5-IAA) as an internal standard, resulted in significant accumulation of IAA in the 4th internode of tulips after the treatment of morphactin. In the treatment of NPA and TIBA, there was almost no such an accumulation of IAA. These results strongly suggest that stimulated growth of the 4th internode of tulips induced by the application of morphactin is the consequence of accumulated endogenous levels of IAA after the treatment. The possible mode of action of auxin polar transport inhibitors in tulip stem growth is also discussed.

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Section: Endogenous Levels Of Auxin In Tulip Stems After the Treatmenmentioning

confidence: 96%

Section: Endogenous Levels Of Auxin In Tulip Stems After the Treatmenmentioning

confidence: 99%

Section: Endogenous Levels Of Auxin In Tulip Stems After the Treatmenmentioning

confidence: 99%

See 1 more Smart Citation

Morphactin Substantially Induced the Fourth Internode Growth in Decapitated Tulips: Relevance to Endogenous Levels of Indole-3-Acetic Acid

Ueda

Góraj

Wegrzynowicz-Lesiak

et al. 2012

Journal of Fruit and Ornamental Plant Research

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Endogenous Auxin Profile in the Christmas Rose (Helleborus niger L.) Flower and Fruit: Free and Amide Conjugated IAA

Brcko

Pěnčík

Magnus

et al. 2011

J Plant Growth Regul

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The reproductive development of the Christmas rose (Helleborus niger L.) is characterized by an uncommon feature in the world of flowering plants: after fertilization the white perianth becomes green and photosynthetically active and persists during fruit development. In the flowers in which fertilization was prevented by emasculation (unfertilized) or entire reproductive organs were removed (depistillated), the elongation of the peduncle was reduced by 20-30%, and vascular development, particularly lignin deposition in sclerenchyma, was arrested. Chlorophyll accumulation in sepals and their photosynthetic efficacy were up to 80% lower in comparison to fertilized flowers. Endogenous auxins were investigated in floral and fruit tissues and their potential roles in these processes are discussed. Analytical data of free indole-3-acetic acid, indole-3-ethanol (IEt), and seven amino acid conjugates were afforded by LC-MS/MS in floral tissues of fertilized as well as unfertilized and depistillated flowers. Among amino acid conjugates, novel ones with Val, Gly, and Phe were identified and quantified in the anthers, and in the fruit during development. Reproductive organs before fertilization followed by developing fruit at post-anthesis were the main source of auxin. Tissues of unfertilized and depistillated flowers accumulated significantly lower levels of auxin. Upon depistillation, auxin content in the peduncle and sepal was decreased to 4 and 45%, respectively, in comparison to fruit-bearing flowers. This study suggests that auxin arising in developing fruit may participate, in part, in the coordination of the Christmas rose peduncle elongation and its vascular development.

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Comparative physiological and metabolomic analyses reveal natural variations of tulip in response to storage temperatures

Wang

Zhao

Wang

et al. 2019

Planta

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Changes in diffusible indole-3-acetic acid from various parts of tulip plant during rapid elongation of the flower stalk

Cited by 4 publications

References 18 publications

Morphactin Substantially Induced the Fourth Internode Growth in Decapitated Tulips: Relevance to Endogenous Levels of Indole-3-Acetic Acid

Morphactin Substantially Induced the Fourth Internode Growth in Decapitated Tulips: Relevance to Endogenous Levels of Indole-3-Acetic Acid

Endogenous Auxin Profile in the Christmas Rose (Helleborus niger L.) Flower and Fruit: Free and Amide Conjugated IAA

Comparative physiological and metabolomic analyses reveal natural variations of tulip in response to storage temperatures

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