Journal Title
Title of Journal: Acta Physiol Plant
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Abbravation: Acta Physiologiae Plantarum
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Publisher
Springer-Verlag
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Authors: Anderson Ricardo Soares Rita de Cássia SiqueiraSoares Victor Hugo Salvador Maria de Lourdes Lucio Ferrarese Osvaldo FerrareseFilho
Publish Date: 2012/03/21
Volume: 34, Issue: 5, Pages: 1811-1817
Abstract
In the present study we investigated the effects of lDOPA l34dihydroxyphenylalanine an allelochemical exuded from the velvetbean Mucuna pruriens L DC var utilis on the growth and cell viability of soybean Glycine max L Merrill roots We analyzed the effects of lDOPA on phenylalanine ammonia lyase PAL cinnamylalcohol dehydrogenase CAD and cell wallbound peroxidase POD activities as well as its effects on phenylalanine tyrosine and lignin contents in the roots 3dayold seedlings were cultivated in halfstrength Hoagland nutrient solution pH 60 with or without 05 mM lDOPA in a growth chamber at 25 °C for 6 12 18 or 24 h with a day/night regime of 11 and a photon flux density of 280 μmol m−2 s−1 In general the length fresh weight and dry weight of the roots decreased followed by a significant loss of cell viability Phenylalanine tyrosine and lignin contents as well as PAL CAD and cell wallbound POD activities increased after lDOPA treatment These results reinforce the susceptibility of soybean to lDOPA which increases the enzyme activity in the phenylpropanoid pathway and therefore provides precursors for the polymerization of lignin In brief these findings suggest that the inhibition of soybean root growth induced by exogenously applied lDOPA may be due to excessive production of lignin in the cell wall
Keywords:
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- Picrorhiza kurrooa : current status and tissue culture mediated biotechnological interventions
- Effect of UV-B radiation on the growth and antioxidant enzymes of Antarctic sea ice microalgae Chlamydomonas sp. ICE-L
- Molecular characterization of a cysteine proteinase inhibitor, PgCPI , from Panax ginseng C. A. Meyer
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- Iridoid and phenylethanoid glycoside production in multiple shoots and regenerated Rehmannia elata N.E. Brown ex Prain plants following micropropagation
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- Differential responses of oat cultivars to phosphate deprivation: plant growth and acid phosphatase activities
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