【摘 要】
：
Our previous studies demonstrated that the invasive Bidens pilosa had negative effects on gametophyte development of Pteris multifida.To further determine the mechanisms of the root exudates of B.pilo
【机 构】
：
College of Biology and the Environment, Nanjing Forestry Univerisy, Nanjing, China, 210037;Smithsoni
论文部分内容阅读
Our previous studies demonstrated that the invasive Bidens pilosa had negative effects on gametophyte development of Pteris multifida.To further determine the mechanisms of the root exudates of B.pilosa to P.multifida, the changes in antioxidant activity, ultra structure and PCD in gametophytes of P.multifida are analyzed.With the enhanced dose of root exudates of B.pilosa (0%, 12.5%, 25%, 50% and 100%), antioxidant enzymes, such as superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR) and glutathione-S-transferase (GST) increased.With time went by, the activities levelled off, which means the system had the defense to the stress of root exudates.
其他文献
Flavonoids are natural polyphenolic compounds produced by many aquatic plants and released in their environments.In this study, the effects of several aquatic flavonoids on cyanobacterial Microcystis
By using distilled water and methanol extracts, 69 Chinese traditional medicinal herbs from the Qinghai-Tibet region were screened, which aimed to finding stable compounds for inducing germination of
The new variety Chuannan bermudagrass was as the donor plant and its two over-seeding turf-grass namely perennial ryegrass and Kentucky bluegrass were as the acceptor plant so as to study the allelopa
Herbivore-induced plant volatiles have been reported to play a role in the host-searching behavior of herbivores.However, next to nothing is known about the effect of volatiles emitted from tea plants
Despite increasing knowledge of positive species interactions involved in environmental stress, relatively little is known about the direct evidences and mechanisms underlying the facilitative interac
We investigated the allelopathic effects of aqueous extracts of seeds and different pans of P notoginseng on seed germination and seedling growth of soybean (Glycine max) and corn (Zea mays).The resul
Root foraging behavior, architecture and morphology of roots to be high degree of plasticity in response to soil heterogeneity, is known to play an important role in how plants acquire soil resources.
The inhibitory effect of barley straw (Hordeum vulgare) on cyanobacteria has been observed in many field and laboratory studies for over 30 years, although the compounds responsible for this anti-cyan
Plants can respond to herbivorous attack with induced defense mechanisms.Plant elicitors play vital roles in inducing the plant defense response against herbivores.In this study, we investigated the e
The microbial community structure and enzyme activity of soil in rhizosphere of Rhynchelytrum repens with different degree of invasion were studied by phospholipids fatty acid (PLFA) and colorimetric