Volatile compounds of three Nepeta species inhibit seed germination, reduce seedling growth and induce oxidative stress in garden cress (Lepidium sativum L.)
2015
Аутори:
Nestorović Živković, JasminaPerišić, Mirjana
Stojić, Andreja
Živković, Suzana
Dmitrović, Slavica
Šiler, Branislav
Mišić, Danijela
Остала ауторства
Uzelac, BrankaТип документа:
Конференцијски прилог (Објављена верзија)
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© 2015 by the Serbian Plant Physiology Society
Метаподаци
Приказ свих података о документуАпстракт:
Phytotoxic effects of volatile organic compounds (VOCs) from Nepeta species on agricultural and weed
species have been previously demonstrated, and are usually attributed to iridoid monoterpenes nepetalactones. Here we studied the effect of VOCs of three endemic Nepeta species, differing in their qualitative nepetalactone content, on seed germination and seedling growth of garden cress (Lepidium sativum L.). Garden cress was exposed to the atmosphere enriched with VOCs released from the leaf surface of three Nepeta species. Identification of VOCs was performed by headspace GC-MS, while the concentrations of nepetalactone in the atmosphere of culture vessels were detected by PTR-MS. Volatiles released from N. rtanjensis and N. sibirica shoots reduced seed germination and inhibited seedling growth of garden cress. Phytotoxic effect of N. rtanjensis and N. sibirica originates from the dominant bioactive compound of these species – nepetalactone. Stereochemistry of nepetalactone considerably determines its phytotoxic potential, trans,cis- isomer is more active than the cis,trans nepetalactone. Phytotoxic effect of nepetalactone is reflected through its effect on biochemical processes that are the consequence of plants disturbed antioxidative system: the inhibition of activities and changed profiles of peroxidases, catalase, Fe- and Cu/Zn-superoxide dismutase isoforms were observed.
Кључне речи:
phytotoxicity; peroxidase; catalase; Fe-superoxide dismutase; CuZn-superoxide dismutaseФинансирање / пројекти:
- Физиолошка, хемијска и молекуларна анализа диверзитета одабраних ретких и угрожених биљних врста у циљу еx ситу заштите и продукције биолошки активних једињења (RS-MESTD-Basic Research (BR or ON)-173024)
У:
- Uzelac B, editor. Book of Abstracts: 2nd International Conference on Plant Biology, 21th Symposium of the Serbian Plant Physiology Society, and CОST Action FA1106 Quality Fruit Workshop; 2015 Jun 17-20; Petnica, Serbia. Belgrade: Serbian Plant Physiology Society: Institute for Biological Research “Siniša Stanković”; 2015. p. 177.