A study on effects of organic compounds on the growth and development of Paphiopedilum delenatii in vitro

Cúc, Nguyễn Thị; Ket, Nguyen Van; Nhựt, Dương Tấn; Ly, Nguyen Thi Kim

doi:10.15625/0866-7160/v36n1se.4403

Cited by 1 publication

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“…In Vietnam, a number of studies have also demonstrated the possibility of using S. platensis in the treatment of cattle wastewater after biogas, catfish pond wastewater, and domestic wastewater to minimize environmental pollution, enhance water quality, and other activities (Oanh et al, 2012;Viet et al, 2017). S. platensis biomass has also been shown to stimulate plant growth, such as arousing the formation of multiple shoots and increasing the survival rate of Paphiopedilum delenatii in vitro and providing a high rate of shoot regeneration in cells of Hoang Thao Nghe Tam orchid (Dendrobium loddigesii Rolfe) and ginseng (Curculigo orchioides Gaertn) (Cuc et al, 2014;Lai et al, 2018 a;Lai et al, 2018b). Previous studies have mainly focused on the utilization of cyanobacterial biomass as a biofertilizer, with little research on the reuse of treated wastewater to enhance plant growth.…”

Section: Introductionmentioning

confidence: 99%

The domestic wastewater treatment capacity of Spirulina platensis SP4 and the application of the treated wastewater in stimulating rice germination

Nguyen

Thủy

Oanh

et al. 2022

Vietnam J. Biotechnol.

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Many scientists are interested in microalgae and cyanobacteria because of their richness in high-value bioactive metabolites (proteins, lipids, vitamins, plant growth regulators, and others). Microalgae and cyanobacteria can be used to produce valuable commodities such as dietary supplements, biofuel, animal feed, and agricultural fertilizer, etc. To improve the economic feasibility of the cyanobacterial product recovery process, it is possible to utilize domestic wastewater as a source of nutrients for their growth. This research focuses on assessing the ability of domestic wastewater treatment and treated domestic wastewater utilization to stimulate BC15 rice-grain sprouting by cyanobacteria Spirulina platensis SP4. Research results showed that S. platensis SP4 grown best in domestic wastewater at the initial density of 0.3 and the wastewater concentration of 100%. The incubation of S. platensis was performed in the laboratory under the condition of 16.8 g/L NaHCO3; aeration during 8 h/day; light: dark cycle of 8:16; light intensity of 5000 lux. Under these conditions S. platensis SP4 could treat N-NH4+, T-N, P-PO43-, T-P and COD well with the treatment efficiency of 96.37, 49.71, 67.05, 65.88 and 95.53%, respectively. The addition of treated domestic wastewater by S. platensis SP4 to BC15 rice grains stimulated the grouting by 99.54 ± 1.25%, which was 1.54 times higher than using the tap water and gave a germination efficiency equivalent to that of the experiments with adding cyanobacteria in standard medium with or without L-tryptophan addition for 48 h. The obtained research results have elucidated the feasibility of employing cyanobacteria in residential wastewater treatment as well as the reuse of treated wastewater for plant development.

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Section: Introductionmentioning

confidence: 99%