Polyamine Sparing May Be Involved in the Prolongation of Cell Division Due to Inhibition of Phenylpropanoid Synthesis in Cytokinin-Starved Soybean Cells

Mader, Johanna C.; Hanke, David E.

doi:10.1007/pl00006983

Cited by 24 publications

(12 citation statements)

References 39 publications

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“…According to current knowledge, phenolics 1) participate in some way in auxin catabolism (Legrand and Bouaza 1991) and 2) they modulate the free PA levels by their conjugation (Cvikrova et al 1999, Mader andHanke 1997). Higher levels of free caffeic, chlorogenic and ferulic acids were found in the basal parts of elm shoots.…”

Section: Discussionmentioning

confidence: 92%

Role of phytohormones in organogenic ability of elm multiplicated shoots

Malá¹,

Gaudinová

Dobrev

et al. 2006

Biol. plant.

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The study presents the comparative analyses of endogenous contents of auxin (IAA), cytokinins (CKs), polyamines (PAs), and phenolic acids (PhAs) in apical and basal parts of elm multiplicated shoots with regard to the organogenic potential. The shoot-forming capacity was higher in the apical part than in the basal part. However, the timing of root formation was in the apical type of explant significantly delayed (compared with the organogenic potential of basal part). Significantly higher contents of free bases, ribosides and ribotides of isopentenyl adenine, zeatin and dihydrozeatin that were found in the apical segments, might be considered as the most important factor affecting in vitro shoot formation. The content of endogenous free IAA was approximately three times higher in the basal shoot parts than in the apical parts. The amounts of putrescine and spermidine were higher in the apical part which generally contains less differentiated tissues than the basal part of shoot. The predominant PhA in both types of explants was caffeic acid, and concentrations of other PhAs decreased in the following order: p-coumaric, ferulic, sinapic, vanillic, chlorogenic, p-hydroxybenzoic and gallic acids. The contents of all determined PhAs in their free forms and higher contents of glycoside-bound p-coumaric, ferulic and sinapic acids, precursors for lignin biosynthesis, were found in the basal parts.

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Section: Discussionmentioning

confidence: 92%

Role of phytohormones in organogenic ability of elm multiplicated shoots

Malá¹,

Gaudinová

Dobrev

et al. 2006

Biol. plant.

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“…4) participates in phenylpropanoid biosynthesis and its derivatives are involved in cell wall strengthening and cell division (Mader and Hanke, 1997). Furthermore, low HMG-CoA synthase levels may lead to misregulation of growth, development and respiration (Posé et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Physiological Response and Comparative Proteomic Analysis of Tobacco Seedling Roots to NH4+

Tan¹

2017

IJAB

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Plants absorb nitrogen, an essential element for their growth and development, mainly in the form of nitrate or ammonium. These nitrogen species have different effects on crops, little is known about their precise influence at both physiological and proteomic levels. This study investigated these mechanisms, hydroponically grown tobacco seedlings treated with three different ratios of NO3 -to NH4 + (10:0, 5:5 or 0:10) for 15 days. The results showed that exposure to high NH4 + concentration affected root morphology and inhibited root development. Moreover, malondialdehyde content and the activity of glutamine synthetase, superoxide dismutase, peroxidase and glutathione S-transferase increased with the concentration of NH4 + in solution. Two-dimensional protein gel analysis showed that 40 protein were differentially expressed between the three treatments. 36 of these proteins were identified using liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS). Gene ontology analysis indicated that these proteins were involved in metabolism, energy production, cell defense or signal transduction or structural constituents related pathways. Our results suggest that tobacco seedling roots are subjected to NH4 + toxicity that triggers oxidative stress. Our results help understanding the responses to different nitrogen species and to NH4 + toxicity in roots.

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“…On the other hand, AOPP controls the production of secondary metabolites from the phenylpropanoid pathway without inhibition of the primary metabolism (Edahiro and Seki, 2006). AOPP regulates PAL activity in phenylpropanoid metabolism in many plants such as apple (Ju et al, 1995), lettuce (Peiser et al, 1998), wheat (Leubner-Metzger andAmrhein, 1994), soybean (Brincat et al, 2002;Mader and Hanke, 1997), and strawberry (Edahiro and Seki, 2006). Fu et al (1993) reported that AOPP accelerated adventitious bud formation by restraining suberization in Japanese white birch.…”

Section: Discussionmentioning

confidence: 99%

“…Amrhein et al (1977Amrhein et al ( , 1979 reported that L-2-aminooxy-3-phenylpropionic acid (AOPP) is in vitro and in vivo a potent inhibitor of PAL in many plants. The role of AOPP has also been indicated as a competitive inhibitor in many plants (Brincat et al, 2002;Edahiro and Seki, 2006;Leubner-Metzger and Amrhein, 1994;Mader and Hanke, 1997). In Betula platyphylla Sukaczev var.…”

Section: Introductionmentioning

confidence: 99%

L-2-aminooxy-3-phenylpropionic acid (AOPP) Controls Browning and Promotes Adventitious Bud Formation in Neofinetia falcata in vitro

Mitsukuri

Johkan

Yamasaki

et al. 2010

J. Japan. Soc. Hort. Sci.

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The effect of L-2-aminooxy-3-phenylpropionic acid (AOPP) on bud formation was investigated by determination of total phenolics in explants and medium browning in the micropropagation of the epiphytic orchid Neofinetia falcata (Thunb.) H.H. Hu. Explants, upper portion of plantlets, were cultured on a medium containing 0, 0.01, 0.1 or 1.0 mM AOPP. Browning was decreased from 70% to 3% by increasing AOPP concentration up to 1.0 mM. All surviving explants developed buds at 0, 0.01 and 0.1 mM AOPP. The highest mean number of buds (7.2) was produced on medium containing 0.01 mM AOPP. Multiple buds were formed on the explants 8 weeks after planting and multiple shoots had developed after 12 weeks. Total phenolics continuously increased in control explants up to 2.03 mg·gFW −1 after 4 weeks. In contrast, in explants treated with 0.01 mM AOPP, total phenolics ceased to increase for 4 weeks of culture and remained at 1.46 mg·gFW −1 , but thereafter increased to 2.24 mg·gFW −1 , the same level as the control, after 8 weeks. Medium browning continuously increased in the control, whereas medium containing 0.01 mM AOPP showed little browning after 4 weeks of culture and thereafter increased to the same degree as the control. The present results suggest that 0.01 mM AOPP is the most suitable concentration to control browning and bud formation in N. falcata.

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Polyamine Sparing May Be Involved in the Prolongation of Cell Division Due to Inhibition of Phenylpropanoid Synthesis in Cytokinin-Starved Soybean Cells

Cited by 24 publications

References 39 publications

Role of phytohormones in organogenic ability of elm multiplicated shoots

Role of phytohormones in organogenic ability of elm multiplicated shoots

Physiological Response and Comparative Proteomic Analysis of Tobacco Seedling Roots to NH4+

L-2-aminooxy-3-phenylpropionic acid (AOPP) Controls Browning and Promotes Adventitious Bud Formation in Neofinetia falcata in vitro

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