| Content Provider |
World Health Organization (WHO)-Global Index Medicus |
| Author |
Mai, Van Chung Drzewiecka, Kinga Jelen, Henryk Narozna, Dorota Rucinska-Sobkowiak, Renata Kesy, Jacek Floryszak-Wieczorek, Jolanta Gabrys, Beata Morkunas, Iwona |
| Description |
Author Affiliation: Mai VC ( Department of Plant Physiology, Poznan University of Life Sciences, Wolynska 35, 60-637 Poznan, Poland); Drzewiecka K ( Department of Chemistry, Poznan University of Life Sciences, Wojska Polskiego 75, 60-625 Poznan, Poland.); Jelen H ( Institute of Plant Products Technology, Poznan University of Life Sciences, Wojska Polskiego 31, 60-624 Poznan, Poland.); Narozna D ( Department of Biochemistry and Biotechnology, Poznan University of Life Sciences, Dojazd 11, 60-632 Poznan, Poland.); Rucinska-Sobkowiak R ( Department of Ecophysiology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 60-614 Poznan, Poland.); Kesy J ( Chair of Plant Physiology and Biotechnology, Nicolaus Copernicus University, Gagarina 9, 87-100 Torun, Poland.); Floryszak-Wieczorek J ( Department of Plant Physiology, Poznan University of Life Sciences, Wolynska 35, 60-637 Poznan, Poland.); Gabrys B ( Department of Botany and Ecology, University of Zielona Góra, Prof. Szafrana 1, 65-516 Zielona Góra, Poland.); Morkunas I ( Department of Plant Physiology, Poznan University of Life Sciences, Wolynska 35, 60-637 Poznan, Poland. Electronic address: morkunas@jay.up.poznan.pl.) |
| Abstract |
This study demonstrates the sequence of enhanced generation of signal molecules such as phytohormones, i.e. jasmonic acid (JA), ethylene (ET), salicylic acid (SA), and a relatively stable free radical, nitric oxide (NO), in response of Pisum sativum L. cv. Cysterski seedling leaves to the infestation of pea aphid Acyrthosiphon pisum (Harris) at a varied population size. In time from 0 to 96h after A. pisum infestation these signal molecules accumulated transiently. Moreover, the convergence of these signaling pathways occurred. JA and its methyl derivative MeJA reached the first maximum of generation at 24th hour of infestation. An increase in ET and NO generation was observed at 48th hour of infestation. The increase in SA, JA/MeJA and ET concentrations in aphid-infested leaves occurred from the 72nd to 96th hour. In parallel, an increase was demonstrated for the activities of enzymes engaged in the biosynthesis of SA, such as phenylalanine ammonia-lyase (PAL) and benzoic acid 2-hydroxylase (BA2H). Additionally, a considerable post-infestation accumulation of transcripts for PAL was observed. An increase in the activity of lipoxygenase (LOX), an important enzyme in the biosynthesis of JA was noted. This complex signaling network may contribute to the coordinated regulation of gene expression leading to specific defence responses. |
| File Format |
HTM / HTML |
| ISSN |
01689452 |
| Volume Number |
221-222 |
| e-ISSN |
18732259 |
| Journal |
Plant Science |
| Language |
English |
| Publisher |
Elsevier |
| Publisher Date |
2014-05-01 |
| Publisher Place |
Ireland |
| Access Restriction |
One Nation One Subscription (ONOS) |
| Subject Keyword |
Discipline Botany Aphids Physiology Free Radical Scavengers Gene Expression Regulation, Plant Peas Genetics Metabolism Plant Growth Regulators Signal Transduction Animals Cyclopentanes Ethylenes Female Nitric Oxide Oxylipins Enzymology Plant Leaves Reverse Transcriptase Polymerase Chain Reaction Salicylic Acid Seedling Time Factors Journal Article Research Support, Non-u.s. Gov't |
| Content Type |
Text |
| Resource Type |
Article |
| Subject |
Genetics Plant Science Medicine Agronomy and Crop Science |
