Role of Wetlands

Dhir, Bhupinder

doi:10.1007/978-81-322-1307-9_4

Cited by 2 publications

(2 citation statements)

References 158 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The treatment of wastewater from water receptor ecosystems by using emergent aquatic macrophytes (EAM) plant species in phytoremediation-based processes is increasing as a result of the plasticity and physiological capacity of such plants to tolerate, accumulate, or remove both organic and inorganic environmental pollutants; moreover, this approach has led investigations of the genetic transformation of these species to improve the phytoremediation processes and the ecological recovery of the affected ecosystems [1][2][3][4][5][6] Typically, the plant species used for phytoremediation must be highly capable of adapting to the local environmental conditions of the polluted site, and as a consequence, stable genetic transformants from native species of the impacted sites are preferred [2,6]. Thus, to enhance the phytoremediation capability of Typha domingensis [7][8][9][10][11][12][13][14][15], and specifically its eutrophic water receptors [8,9,16], the aim of this work was to investigate the efficiency of the agrotransformation and survival of embryos in the oblong and scutellar stage (Figure 1) induced from in vitro rhizoclones grown in hydroponic rhizotron systems of an ecotype of T. domingensis Pers. (cattail).…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, although we were unable to find reports about the genetic transformation of T. domingensis, it was chosen because it is a monocotyledonous EAM intercontinentally dispersed in the wetlands of Europe, Asia, and America continent [27,28]. In addition, it is a highly flood-and salt-tolerant species [9,16,29] that can grow in eutrophic water with anaerobic substrates [7,8] and can uptake heavy metals [9,15]. Furthermore, this species has been used in the floating treatment of wetlands for the phytoremediation of heavy metals from wastewater [10][11][12][13][14], oil-contaminated water [30], and water from wetlands containing high phosphate concentrations [7,31].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Induction of Hairy Roots on Somatic Embryos of Rhizoclones from Typha domingensis Seedlings

Hernández-Piedra

Ruiz-Carrera

Sánchez

et al. 2020

Plants

View full text Add to dashboard Cite

A protocol for the induction of hairy roots on somatic embryos of rhizoclones from Typha domingensis seedlings grown in hydroponic rhizotron systems was established for the first time. Rhizogenesis was induced through the agrotransformation of somatic embryos in oblong and scutellar states of development using the K599, LBA9402, and A4 strains of Agrobacterium rhizogenes. The transfection to the embryos was performed by cocultivation of rhizoclones on a Murashige and Skoog mineral medium at 50% strength (MS0.5), in the dark, at 28 ± 2 °C for 72 h. In contrast to nontransformed embryos that did not exhibit any root tissue, transformed embryos presented hairy roots that varied in number, length, and density depending on the bacterial strain, and K599 was the most effective strain. After analysis via optical microscopy, the transformed embryos were collected and transferred to fresh culture media supplemented with 400 mg mL−1 cefotaxime and 10 mg L−1 ascorbic acid. The efficiency of transformation and survival of the oblong and scutellar embryos were similar among the three bacterial strains. The results show that agrotransformation of somatic embryos of rhizoclones from T. domingensis is a novel and viable strategy for the generation of genetic transformants of Typha that have potential applications in bioremediation technologies.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Induction of Hairy Roots on Somatic Embryos of Rhizoclones from Typha domingensis Seedlings

Hernández-Piedra

Ruiz-Carrera

Sánchez

et al. 2020

Plants

View full text Add to dashboard Cite

show abstract

Community perceptions on the impact of the recession of Lake Victoria waters on Nyando Wetlands

Obiero¹

2012

Sci. Res. Essays

View full text Add to dashboard Cite

Lake Victoria experienced drastic water level changes from October 2005 raising concerns about impact to the livelihood of the communities around the lake. The study investigated impacts of the water level decline on land use changes, wetland resource utilization, household food production, income generation, fish catches, water supply, quality and quantity and biodiversity changes within the Nyando wetlands in Western Kenya. Data was collected between August and December 2006 through in-depth household interviews of 120 randomly selected wetland resource users; key informant interviews (KII), and focused group discussions (FGD). Qualitative description and SPSS computer package Version 11.6 was used for statistical data analysis. Results of the study indicate that receding water levels led to increased availability of land for farming through reclamation and conversion of exposed wetland areas; over-exploitation of macrophytes; increased food production and income generation; and increased conflicts in the use of wetland resources. Water recession also caused shortage of domestic water supply, decrease in fish catches and biodiversity. The study recommends establishment of buffer zones to protect papyrus, formulation of national policies on wetland conservation, creation of alternative sustainable development options, and development of site specific wetland management plan to regulate the utilization of wetland resources.

show abstract

Role of Wetlands

Cited by 2 publications

References 158 publications

Induction of Hairy Roots on Somatic Embryos of Rhizoclones from Typha domingensis Seedlings

Induction of Hairy Roots on Somatic Embryos of Rhizoclones from Typha domingensis Seedlings

Community perceptions on the impact of the recession of Lake Victoria waters on Nyando Wetlands

Contact Info

Product

Resources

About