Essential oils of two Nepeta species inhibit growth and induce oxidative stress in ragweed (Ambrosia artemisiifolia L.) shoots in vitro
2015
Аутори:
Dmitrović, SlavicaPerisic, Mirjana
Stojic, Andreja
Živković, Suzana
Boljevic, Jelena
Nestorović Živković, Jasmina
Anicic, Neda
Ristic, Mihailo
Misic, Danijela
Тип документа:
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт:
In vitro shoot cultures of ragweed (Ambrosia artemisiifolia L.), an
important weed and allergen species, were established and utilized to
explore the phytotoxic effect of essential oils of Nepeta rtanjensis
Diklic and Milojevic, and N. cataria L. Ragweed shoots were exposed to
the atmosphere enriched with volatile compounds emitted from essential
oils which differ in their qualitative and quantitative nepetalactone
content. Essential oil of N. rtanjensis, an endemic and critically
endangered perennial in Serbia, was characterized by high amounts of 4a
alpha, 7 alpha, 7a beta-nepetalactone (trans, cis-nepetalactone), while
essential oil of N. cataria, possessed high amounts of 4a alpha, 7
alpha, 7a alpha-nepetalactone (cis, trans-nepetalactone). After 2 weeks
of exposure to Nepeta essential oil (2 and 4 \%, final nepetalactone
concentrations), in vitro morphogenesis of ragweed shoots was
significantly altered. Reduction in fresh weight of shoots and roots and
rooting inhibition was observed together with prominent discoloration of
shoots. Alterations in antioxidative defense system of ragweed shoots as
a response to essential oils treatments were characterized by increased
peroxidase activity and decreased catalase and superoxide dismutase
activity. Generally, essential oil of N. cataria, which possesses cis,
trans-stereoisomer of nepetalactone, had stronger inhibitory effect on
shoot growth, catalase activity, and was more efficient in stimulating
peroxidase activity. N. rtanjensis essential oil, and thus trans,
cis-nepetalactone, was more efficient in inhibiting rooting and root
growth, and in suppressing superoxide dismutase activity. Therefore,
essential oils of N. rtanjensis and N. cataria might find another
application as potential bioherbicides against highly invasive species
such as ragweed.
Кључне речи:
Ragweed; Nepetalactone; Antioxidative enzymes; Nepeta rtanjensis; Nepeta cataria; AllelopathyИзвор:
Acta Physiologiae Plantarum, 2015, 37, 3
DOI: 10.1007/s11738-015-1810-2
ISSN: 1861-1664