Phytoextraction of heavy metals and ultrastructural changes of Ricinus communis L. grown on complex organometallic sludge discharged from alcohol distillery

2021 ◽  
Vol 22 ◽  
pp. 101382
Author(s):  
Vineet Kumar ◽  
Luiz Fernando Romanholo Ferreira ◽  
Madan Sonkar ◽  
Joginder Singh
Keyword(s):  
Heavy Metals ◽  
Ricinus Communis ◽  
Ultrastructural Changes ◽  
Ricinus Communis L

scholarly journals Immunolocalization of ricin accumulation during castor bean (Ricinus communis L.) seed development

2010 ◽  
Vol 1 (2) ◽  
pp. 12 ◽  
Author(s):  
Aisy Botega Baldoni ◽  
Ana Cláudia Guerra Araújo ◽  
Mayara Holanda De Carvalho ◽  
Ana Cristina M. M. Gomes ◽  
Francisco J. L. Aragao
Keyword(s):  
Seed Development ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Cellular Level ◽  
Ultrastructural Changes ◽  
Protein Storage ◽  
Protein Storage Vacuoles ◽  
Ricinus Communis L ◽  
The Matrix ◽  
Localization Signal

Ricin is a dimeric glycoprotein that accumulates in protein storage vacuoles of endosperm cells of Ricinus communis L. (castor bean). The proricin travels through the Golgi appar­atus and co-localizes throughout its route to the storage vacuoles of developing castor bean endosperm. We report here the pattern of seed morphological and ultrastructural changes during various stages of seed development, associated with ricin accumulation. ELISA was used to compare the ricin content in mature seeds of four Brazilian commercial cultivars. ELISA and immunoelectron microscopy anal­ysis were used to study ricin accumulation during seed development from 10 to 60 days after pollination (DAP). Results have shown that no ricin could be localized in the endosperm cells in the early development stages (before 20 DAP) and only a few localization points could be observed at 30 DAP. However, a significant ricin localization signal was observed at 40 DAP in the matrix of the protein storage vacuoles. The signal increased significantly from 50 to 60 DAP, when ricin was observed in both the matrix and crystalloids of the protein storage vacuoles. Understanding ricin expression at the cellular level is fundamental for the development of strategies for gene suppression using molecular breeding approaches.

scholarly journals Heavy Metals in Mine-Tailing Soil Mixtures Cultivated with Ricinus communis L.

2018 ◽  
Vol 27 (5) ◽  
pp. 2007-2022 ◽  
Author(s):  
Elizabeth González-Terreros ◽  
Victor Ruiz-Valdiviezo ◽  
Alejandro Galván-Velázquez ◽  
Marina Franco-Hernández ◽  
Marco Luna-Guido ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Ricinus Communis ◽  
Mine Tailing ◽  
Ricinus Communis L ◽  
Soil Mixtures

scholarly journals Evaluation of Suitability of Amaranthus Caudatus L. and Ricinus Communis L. in Phytoextraction of Cadmium and Lead from Contaminated Substrates

2013 ◽  
Vol 39 (3) ◽  
pp. 47-59 ◽  
Author(s):  
Maciej Bosiacki ◽  
Tomasz Kleiber ◽  
Jakub Kaczmarek
Keyword(s):  
Heavy Metals ◽  
Lead Acetate ◽  
Ricinus Communis ◽  
Ornamental Plants ◽  
Lead Contamination ◽  
Cadmium Sulfate ◽  
Amaranthus Caudatus ◽  
Ricinus Communis L ◽  
Contamination Of Soils ◽  
Cadmium And Lead

Abstract The phytoextraction is a process that uses living plants for cleaning up the heavy metals from contaminated soil. The cadmium and lead contamination of soils results from the application of sludge or urban composts, fertilizers, pesticides, motorization, metallurgy, and different technological processes. In industrial terrain the content of cadmium and lead in soils has increased in the recent years. This study was undertaken to evaluate the potential of Amaranthus caudatus L. ‘Atropurpureus’ and Ricinus communis L. ‘Sanguineus Apache’ for phytoextraction of cadmium and lead. Two species of ornament plants, i.e. Amaranthus caudatus L. ‘Atropurpureus’ and Ricinus communis L. ‘Sanguineus Apache’, were planted in drainless containers in a substrate artificially polluted with cadmium and lead in order to evaluate their suitability for phytoremediation of soils or substrates contaminated with these metals. Cadmium was applied at increasing rates of 0, 1, 5 and 10 mg Cd∙dm-3 in the form of cadmium sulfate 3CdSO4∙8H2O, while lead was used at 0, 100, 500 and 1000 mg Pb∙dm-3 in the form of lead acetate (CH3COO)2Pb∙3H2O. The applied doses of cadmium and lead in the experiment reflected different degrees of soil pollution. After five months of growth it was found that Amaranthus caudatus L. accumulated the biggest concentrations of cadmium and lead in leaves and the lowest concentrations in inflorescences. Ricinus communis L. accumulated the highest concentrations of cadmium in stems, while the lowest concentrations in inflorescences, whereas the biggest concentration of lead was accumulated in inflorescences and the least lead was accumulated in leaves. The biggest reduction of cadmium and lead concentrations after the completion of the experiment was found in substrates, in which Amaranthus caudatus L. was grown. The tested species of ornamental plants may be used in the phytoextraction of cadmium and lead from soils contaminated.

The reactive surface of Castor leaf [Ricinus communis L.] powder as a green adsorbent for the removal of heavy metals from natural river water

2013 ◽  
Vol 276 ◽  
pp. 24-30 ◽  
Author(s):  
Amanda E. Martins ◽  
Milene S. Pereira ◽  
Alexandre O. Jorgetto ◽  
Marco A.U. Martines ◽  
Rafael I.V. Silva ◽  
...  
Keyword(s):  
Heavy Metals ◽  
River Water ◽  
Ricinus Communis ◽  
Reactive Surface ◽  
Ricinus Communis L ◽  
Green Adsorbent ◽  
Removal Of Heavy Metals ◽  
Natural River Water

scholarly journals Probing the floral developmental stages, bisexuality and sex reversions in castor (Ricinus communis L.)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sujatha Thankeswaran Parvathy ◽  
Amala Joseph Prabakaran ◽  
Thadakamalla Jayakrishna
Keyword(s):  
Developmental Stages ◽  
Ricinus Communis ◽  
Sex Expression ◽  
Pistil Abortion ◽  
Ricinus Communis L ◽  
Sex Reversion ◽  
Stage 4 ◽  
Meristem Development ◽  
Male Specific ◽  
First Time

AbstractCastor (Ricinus communis L) is an ideal model species for sex mechanism studies in monoecious angiosperms, due to wide variations in sex expression. Sex reversion to monoecy in pistillate lines, along with labile sex expression, negatively influences hybrid seed purity. The study focuses on understanding the mechanisms of unisexual flower development, sex reversions and sex variations in castor, using various genotypes with distinct sex expression pattern. Male and female flowers had 8 and 12 developmental stages respectively, were morphologically similar till stage 4, with an intermediate bisexual state and were intermediate between type 1 and type 2 flowers. Pistil abortion was earlier than stamen inhibition. Sex alterations occurred at floral and inflorescence level. While sex-reversion was unidirectional towards maleness via bisexual stage, at high day temperatures (Tmax > 38 °C), femaleness was restored with subsequent drop in temperatures. Temperature existing for 2–3 weeks during floral meristem development, influences sexuality of the flower. We report for first time that unisexuality is preceded by bisexuality in castor flowers which alters with genotype and temperature, and sex reversions as well as high sexual polymorphisms in castor are due to alterations in floral developmental pathways. Differentially expressed (male-abundant or male-specific) genes Short chain dehydrogenase reductase 2a (SDR) and WUSCHEL are possibly involved in sex determination of castor.

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