Results 201 to 210 of about 10,564 (251)

Ammonia stress on the carbon metabolism of Ceratophyllum demersum

Environmental Toxicology and Chemistry, 2014
Abstract   In the present study, carefully controlled pH ranges (7 and 9) were used to distinguish between the effects of un-ionized NH3 and the NH4+ ion. The objective was to find the effect of different total ammonia nitrogen concentrations and pH values on the carbon metabolism of Ceratophyllum ...
Jingqing, Gao, Linshuai, Li, Zhiyuan, Hu, Songfeng, Zhu, Ruiqin, Zhang, Zhiting, Xiong   +5 more
openaire   +2 more sources

Toxicological effects of bisphenol F on growth, antioxidant response, ultrastructure, and microbial properties of the submerged macrophyte Ceratophyllum demersum L.

Science of the Total Environment
Alternative chemicals to bisphenol A (BPA), such as bisphenol F (BPF), have been detected in aquatic environments worldwide and can potentially exert negative effects on aquatic organisms. To evaluate the toxic effects of the exposure of BPF on submerged
Gui Yu, Jie Wang, HongKuan Cheng, Xingzhang Luo, Shoubing Wang, Zheng Zheng   +5 more
semanticscholar   +1 more source

Hormonal interactions in Ceratophyllum demersum

Aquatic Botany, 1982
Ceratophyllum demersum L. is a submerged aquatic macrophyte without roots. It occurs in winter in the dormant form and in summer in the active form. The effect of application of mixtures of indole acetic acid (IAA), abscisic acid (ABA) and gibberellic acid (GA3) on subsequent growth after treatment in the quiescent stage was studied.
openaire   +1 more source

Effect of ammonia stress on nitrogen metabolism of Ceratophyllum demersum

Environmental Toxicology and Chemistry, 2015
Abstract   The objective of the present study was to determine the effect of total ammonia N concentration and pH on N metabolism of Ceratophyllum demersum and to evaluate stress as a result of inorganic N enrichment in the water column on submerged macrophytes.
Gao, Jingqing, Li, Linshuai, Hu, Zhiyuan, Yue, H., Zhang, Ruiqin, Xiong, Zhiting   +5 more
openaire   +3 more sources

Growth Substances and Dormancy in Ceratophyllum demersum

Physiologia Plantarum, 1979
Abstract Ceratophyllum demersum L. occurs in winter in the dormant form, in summer in the vegetative form. Factors that affect growth and dormancy in Ceratophyllum were studied. After several weeks of severe winter conditions the plants changed from dormant to quiescent state.
openaire   +2 more sources

Ceratophyllum demersum (coontail).

2021
Abstract C. demersum is a cosmopolitan submerged aquatic species that has probably already invaded most of its potential exotic range. It has the advantages of being a perennial surviving well over-winter in deeper water and by growing both by asexual reproduction of broken or complete stems and by sexual reproduction of very many ...
openaire   +1 more source

Ceratophyllum demersum alleviates microplastics uptake and physiological stress responses in aquatic organisms, an overlooked ability.

Journal of Hazardous Materials
It has been demonstrated that microplastics (MPs) may be inadvertently ingested by aquatic animals, causing harm to their physiological functions and potentially entering the food chain, thereby posing risks to human food safety.
Weihong Zhao, Xirui Zheng, Jintao Liu, Yanming Sui, Yuning Wang, Pan Luo, Xi Zhu, Wenjing Wu, Wen Gu, Xingyu Liu   +9 more
semanticscholar   +1 more source

Photosynthesis in relation to growth and dormancy in Ceratophyllum demersum

Aquatic Botany, 1979
Abstract Growth and photosynthetic activity in the different development stages of Ceratophyllum demersum L. were measured with particular reference to the physiological maxima of these processes and the factors influencing the carbon fixation rates.
Best, E.P.H., Meulemans, J.T.
openaire   +2 more sources

Floral development and phyllotactic variation in Ceratophyllum demersum (Ceratophyllaceae)

American Journal of Botany, 2003
The floral development of staminate and pistillate flowers of Ceratophyllum demersum was observed, with particular focus on the phyllotactic variation in staminate flowers, using scanning electronic microscopy (SEM). We discerned patterns of development of some important new morphological features, e.g., the difference and discontinuity between the ...
Akitoshi, Iwamoto, Akiko, Shimizu, Hideaki, Ohba   +2 more
openaire   +2 more sources

Ceratophyllum demersum – phosphorus interactions in nutrient enriched aquaria

Hydrobiologia, 2003
High macrophyte density in shallow lakes is often associated with clear water, especially when the non-rooted, submerged angiosperm Ceratophyllum demersum is dominant. Lack of true roots and high surface area:volume ratio suggest that nutrient uptake from the water column by C. demersum may be high.
Paola Lombardo, G. Dennis Cooke
openaire   +1 more source