TL;DR: Similarities in plant and leaf responses to the auxin and/or the cytokinin suggest that both hormones may act via the same pathway, which agreed with the well-known promotional effect of auxins on the development of new lateral roots, as root apices are the main site of cytokinIn biosynthesis.
Abstract: SUMMARYWe have analysed the effects of combined auxin and cytokinin treatments on whole plant growth and leaf development in Epipremnum aureum and compared both morphological and physiological variables to those obtained with a single hormone application. Rooted cuttings of E. aureum were sprayed with 0, 5, 50, or 100 mg I−1 indole-3- acetic acid (IAA) 7 d after transplanting. One week later, they were then sprayed with 0, 5, 50, or 100 mg I−1 benzylaminopurine (BAP). Whole plant growth, leaf development, carbon fixation, and leaf anatomy were recorded for 6 months after these sequential treatments. Following a single application of IAA or BAP, we observed an increase in the accumulation of whole-plant biomass, which reached a plateau at the highest concentration of either plant hormone. The promotion of growth was associated with increased rates of net C-assimilation and net photosynthesis, as well as with increased leaf thickness and the relative proportion of intracellular spaces in the mesophyll layer...
TL;DR: An account of native and introduced Epipremnum species in West and Central Malesia is presented as a precursor to the forthcoming Flora Malesiana Araceae treatment, and Epip Remnum grandifolium is returned to Scindapsus, the genus in which it was originally described.
Abstract: An account of native and introduced Epipremnum species in West and Central Malesia is presented as a precursor to the forthcoming Flora Malesiana Araceae treatment. Seven species and one cultivar, none new, are recognized. Epipremnum grandifolium is returned to Scindapsus, the genus in which it was originally described and Scindapsus dilaceratus (synonyms Monstera dilacerata, Tornelia dilacerata) ), a long-overlooked synonym of E. pinnatum, is discussed. Related genera and identification pit-falls are highlighted. Dichotomous keys to the genera of tribes Anadendreae and Monstereae and to West and Central Malesian Epipremnum species, a multiaccess key to Epipremnum species in West and Central Malesia and a geographical species-finder list are provided. All names in the review area are accounted for. Five species are illustrated.
TL;DR: There are immense properties hidden in Epipremnum species that need to be explored using the scientific investigations to make it beneficial for the environment and human health.
Abstract: Plants belonging to the Arum family (Araceae) are commonly known as aroids as they contain crystals of calcium oxalate and toxic proteins which can cause intense irritation of the skin and mucous membranes, and poisoning if the raw plant tissue is eaten. Aroids range from tiny floating aquatic plants to forest climbers. Many are cultivated for their ornamental flowers or foliage and others for their food value. Present article critically reviews the growth conditions of Epipremnum aureum (Linden and Andre) Bunting with special emphasis on their ethnomedicinal uses and pharmacological activities, beneficial to both human and the environment. In this article, we review the origin, distribution, brief morphological characters, medicinal and pharmacological properties of Epipremnum aureum, commonly known as ornamental plant having indoor air pollution removing capacity. There are very few reports to the medicinal properties of E. aureum. In our investigation, it has been found that each part of this plant possesses antibacterial, anti-termite and antioxidant properties. However, apart from these it can also turn out to be anti-malarial, anti-cancerous, anti-tuberculosis, anti-arthritis and wound healing etc which are a severe international problem. In the present study, details about the pharmacological actions of medicinal plant E. aureum (Linden and Andre) Bunting and Epipremnum pinnatum (L.) Engl. is discussed based on modern scientific investigations. There are immense properties hidden in Epipremnum species that need to be explored using the scientific investigations to make it beneficial for the environment and human health.
TL;DR: From Hedera helix and Epipremnum aureum showing necrosis of shoot base spread upwards and on leaves Phytophthora tropicalis was isolated and colonised petioles and leaf blades of both host plants.
Abstract: From Hedera helix and Epipremnum aureum showing necrosis of shoot base spread upwards and on leaves Phytophthora tropicalis was isolated. The species was obtained from ⅞ of Hedera and ¾ of Epipremnum diseased shoot and root parts. Additionally, Botrytis cinerea, Fusarium avenaceum and Rhizoctonia solani was recovered from some of affected plants. The chosen 2 isolates colonised petioles and leaf blades of both host plants. P. tropicalis caused necrosis of leaves of 11 tested cultivars of H. helix and 13 other pot plant species and seedlings of tomato. The fastest spread of necrosis was observed on leaves of Peperomia magnoli- aefolia, Pelargonium zonale and Phalaenopsis x hybridum. The development of disease was observed at temperatures ranged from 10 to 32.5°C with optimum 30°C.
TL;DR: The results of the cluster analyis support the transfer of R. korthalsii to the genus Epipremnum and the leaf morphology does not offer conclusive evidence in establishing the intergeneric relationship between Epip Remnum and Rhaphidophora.
Abstract: Leaves of 50 specimens under the genera Rhaphidophora and Epipremnum were measured and characterized using the Manual of Leaf Architecture. The leaf characters were compared and subjected to phenetic investigation using cluster analysis with the aid of a computer software, PC-ORD (ver 2.11). Generally, the leaves may be categorized into two groups based on lobation. The results of the cluster analyis support the transfer of R. korthalsii to the genus Epipremnum. Further, the leaf morphology was able to define the interspecific relationship within Rhaphidophora. However, in establishing the intergeneric relationship between Epipremnum and Rhaphidophora, the leaf morphology does not offer conclusive evidence.