Root Growth and Enzymes Related to the Lignification of Maize Seedlings Exposed to the Allelochemical L-DOPA
Joint Authors
Ferrarese-Filho, O.
Siqueira-Soares, Rita de Cássia
Soares, Anderson Ricardo
Parizotto, Angela Valderrama
Ferrarese, Maria de Lourdes Lucio
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-14
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
L-3,4-Dihydroxyphenylalanine (L-DOPA) is a known allelochemical exuded from the roots of velvet bean (Mucuna pruriens L.
Fabaceae).
In the current work, we analyzed the effects of L-DOPA on the growth, the activities of phenylalanine ammonia-lyase (PAL), tyrosine ammonia-lyase (TAL), and peroxidase (POD), and the contents of phenylalanine, tyrosine, and lignin in maize (Zea mays) roots.
Three-day-old seedlings were cultivated in nutrient solution with or without 0.1 to 2.0 mM L-DOPA in a growth chamber (25°C, light/dark photoperiod of 12/12, and photon flux density of 280 μmol m−2 s−1) for 24 h.
The results revealed that the growth (length and weight) of the roots, the PAL, TAL, and soluble and cell wall-bound POD activities decreased, while phenylalanine, tyrosine, and lignin contents increased after L-DOPA exposure.
Together, these findings showed the susceptibility of maize to L-DOPA.
In brief, these results suggest that the inhibition of PAL and TAL can accumulate phenylalanine and tyrosine, which contribute to enhanced lignin deposition in the cell wall followed by a reduction of maize root growth.
American Psychological Association (APA)
Siqueira-Soares, Rita de Cássia& Soares, Anderson Ricardo& Parizotto, Angela Valderrama& Ferrarese, Maria de Lourdes Lucio& Ferrarese-Filho, O.. 2013. Root Growth and Enzymes Related to the Lignification of Maize Seedlings Exposed to the Allelochemical L-DOPA. The Scientific World Journal،Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-1011518
Modern Language Association (MLA)
Siqueira-Soares, Rita de Cássia…[et al.]. Root Growth and Enzymes Related to the Lignification of Maize Seedlings Exposed to the Allelochemical L-DOPA. The Scientific World Journal No. 2013 (2013), pp.1-6.
https://search.emarefa.net/detail/BIM-1011518
American Medical Association (AMA)
Siqueira-Soares, Rita de Cássia& Soares, Anderson Ricardo& Parizotto, Angela Valderrama& Ferrarese, Maria de Lourdes Lucio& Ferrarese-Filho, O.. Root Growth and Enzymes Related to the Lignification of Maize Seedlings Exposed to the Allelochemical L-DOPA. The Scientific World Journal. 2013. Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-1011518
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1011518