Effect of inhibition of phenylpropanoid biosynthesison peroxidase and IAA-oxidase activities and auxin contentin alfalfa suspension cultures

Hrubcová, Marie; Cvikrová, Milena; Eder, J.; Zoń, Jerzy; Macháčková, Ivana

doi:10.1016/s0981-9428(00)01208-0

Cited by 23 publications

(9 citation statements)

References 30 publications

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“…3C). These results are in agreement with the observations of other investigators who found that treatment with AIP reduced anthocyanins in buckwheat and red cabbage (Zoń and Amrhein 1992, Gitz et al 1998), reduced HCAs esters, flavonoids and anthocyanins in rye and soybean roots (Reuber et al 1993, Janas et al 2000, 2002), and reduced the wall‐bound HCAs in maize and alfalfa cell suspension cultures (Grabber et al 1995, Cvikrová et al 1999, Hrubcová et al 2000) and in radish seedlings (Chen et al 1998).…”

Section: Discussionsupporting

confidence: 93%

Phenylpropanoid deficiency affects the course of plant acclimation to cold

Solecka

Kacperska

2003

Physiologia Plantarum

136

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The effects of phenylpropanoid deficiency on plant growth, photosynthetic efficiency of the photosystem II and freezing tolerance of leaves were studied during acclimation of winter oilseed rape plants (Brassica napus L. var. oleifera L. cv Jantar) at low temperature. Application of 2-amino-2-indanophosphonic acid inhibited phenylalanine ammonialyase (E.C. 4.3.1.5) activity by about 90%. This was followed by a marked reduction of soluble phenolics (in particular hydroxycinnamic acids) and anthocyanins in leaves. Inhibition of the cold-promoted incorporation of ferulic acid into cell walls was also observed. The reduction of phenylpropanoid contents was associated with: (1) partial abrogation of the cold-induced growth effects, such as inhibition of leaf fresh weight increments and accumulation of dry matter, proteins and cell walls; (2) decreased photochemical efficiency of photosystem II in low temperature-affected leaves; and (3) decreased ability of leaves to develop tolerance to the extracellular formation of ice. These findings are discussed in terms of phenylpropanoids' role in plant responses to cold (> 0 C) and freezing temperatures.

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Section: Discussionsupporting

confidence: 93%

Phenylpropanoid deficiency affects the course of plant acclimation to cold

Solecka

Kacperska

2003

Physiologia Plantarum

136

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“…In previous studies, we noted that cinnamic acid derivatives (i.e., ferulic, p -coumaric and caffeic acids) also increased the lignin content, inducing significant changes in the lignin monomer content [15–17]. Complementarily, Hrubcová et al [41] also observed a decline in the IAA level in alfalfa suspension cultures subjected to 2-aminoindan-2-phosphonic acid (AIP), a known inhibitor of the phenylalanine ammonia-lyase (PAL), which is the first enzyme of the phenylpropanoid pathway that is the main route to the lignin production (Figure 7).…”

Section: Discussionmentioning

confidence: 97%

Cinnamic Acid Increases Lignin Production and Inhibits Soybean Root Growth

et al. 2013

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Cinnamic acid is a known allelochemical that affects seed germination and plant root growth and therefore influences several metabolic processes. In the present work, we evaluated its effects on growth, indole-3-acetic acid (IAA) oxidase and cinnamate 4-hydroxylase (C4H) activities and lignin monomer composition in soybean (Glycine max) roots. The results revealed that exogenously applied cinnamic acid inhibited root growth and increased IAA oxidase and C4H activities. The allelochemical increased the total lignin content, thus altering the sum and ratios of the p-hydroxyphenyl (H), guaiacyl (G), and syringyl (S) lignin monomers. When applied alone or with cinnamic acid, piperonylic acid (PIP, a quasi-irreversible inhibitor of C4H) reduced C4H activity, lignin and the H, G, S monomer content compared to the cinnamic acid treatment. Taken together, these results indicate that exogenously applied cinnamic acid can be channeled into the phenylpropanoid pathway via the C4H reaction, resulting in an increase in H lignin. In conjunction with enhanced IAA oxidase activity, these metabolic responses lead to the stiffening of the cell wall and are followed by a reduction in soybean root growth.

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“…They are abundant in the leaves of olive trees (Ryan et al 2002) and in olive oil (Owen et al 2000), being found in cytoplasm, vacuoles and cell walls. Phenolic compounds are also involved in auxin protection or catabolism (Hrubcová et al 2000) and in the modulation of the cell wall plasticity (Fry 1986). Furthermore, abscisic acid-induced stomatal closure is reversed by some phenolics (Purohit et al 1991), suggesting an important role of these compounds in gas exchange dynamics.…”

Section: Discussionmentioning

confidence: 99%

Antioxidant defences in olive trees during drought stress: changes in activity of some antioxidant enzymes

Sofo

Dichio

Xiloyannis

et al. 2005

Functional Plant Biol.

148

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The effects of drought on the activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (POD), indoleacetate oxidase (IAAox) and polyphenol oxidase (PPO) were studied in 2-year old Olea europaea L. (cv. ‘Coratina’) plants grown under high temperatures and irradiance levels and gradually subjected to a controlled water deficit. After 20 d without irrigation, mean predawn leaf water potential fell from –0.37 to –5.37 MPa, and decreases in net photosynthesis and transpiration occurred. The activities of SOD, APX, CAT and POD increased in relation to the severity of drought stress in both leaves and roots. In particular, a marked increase in APX activity was found in leaves of plants at severe drought stress. CAT activity increased during severe water deficit conditions in leaves and fine roots. The patterns of POD and IAA oxidase activity ran in parallel and showed increases in relation to the degree of drought. In contrast, PPO activity decreased during the progression of stress in all the tissues studied. The results show that the ability of olive trees to up-regulate the enzymatic antioxidant system might be an important attribute linked to drought tolerance. This could limit cellular damage caused by active oxygen species during water deficit.

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Effect of inhibition of phenylpropanoid biosynthesison peroxidase and IAA-oxidase activities and auxin contentin alfalfa suspension cultures

Cited by 23 publications

References 30 publications

Phenylpropanoid deficiency affects the course of plant acclimation to cold

Phenylpropanoid deficiency affects the course of plant acclimation to cold

Cinnamic Acid Increases Lignin Production and Inhibits Soybean Root Growth

Antioxidant defences in olive trees during drought stress: changes in activity of some antioxidant enzymes

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