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Synthesis, spectral characterization thermal stability, antimicrobial studies and biodegradation of starch–thiourea based biodegradable polymeric ligand and its coordination complexes with [Mn(II), Co(II), Ni(II), Cu(II), and Zn(II)] metals. JOURNAL OF SAUDI CHEMICAL SOCIETY 2016. [DOI: 10.1016/j.jscs.2012.07.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kahya S, Şanlı O, Ünal HI, Camurlu P. A Novel Copolymer: Starch-g-Polyvinylpyrrolidone. STARCH-STARKE 2009. [DOI: 10.1002/star.200800021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kanai M, Higuchi K, Hagihara T, Konishi T, Ishii T, Fujita N, Nakamura Y, Maeda Y, Yoshiba M, Tadano T. Common reed produces starch granules at the shoot base in response to salt stress. THE NEW PHYTOLOGIST 2007; 176:572-580. [PMID: 17953542 DOI: 10.1111/j.1469-8137.2007.02188.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Common reed (Phragmites australis) is a well known salt-tolerant plant and it is suggested that reeds recover Na(+) in the xylem sap of the shoot base (basal part of the shoot), store it temporarily in the shoot base, release it into the phloem sap, and then retranslocate it to the roots. To investigate whether Na(+) is retained in the shoot base of reeds, confocal laser scanning microscope (CLSM) observations were conducted using an intracellular Na(+)-specific fluorescent probe. The CLSM observations revealed that reeds produced a large number of the starch granules at the shoot base when salt-stressed, and that the fluorescence indicating the location of intracellular free Na(+) was observed in the same position as the starch granules. The Na content of starch granules was considerably greater than that of the shoot base, whereas the potassium (K) contents of the granules was only slightly greater than that of the shoot base. Reeds produced Na(+)-binding starch granules in the parenchyma cells of the shoot base when salt-stressed; these starch granules may decrease intracellular free Na(+). It is proposed that the site-specific production of Na(+)-binding starch granules constitutes a novel salt tolerance mechanism.
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Affiliation(s)
- Masatake Kanai
- Department of Applied Biology and Chemistry, Faculty of Applied Bio-Science, Tokyo University of Agriculture, Setagaya-ku, Tokyo 156-8502, Japan
| | - Kyoko Higuchi
- Department of Applied Biology and Chemistry, Faculty of Applied Bio-Science, Tokyo University of Agriculture, Setagaya-ku, Tokyo 156-8502, Japan
| | - Takashi Hagihara
- Department of Applied Biology and Chemistry, Faculty of Applied Bio-Science, Tokyo University of Agriculture, Setagaya-ku, Tokyo 156-8502, Japan
| | - Teruko Konishi
- Forestry and Forest Products Research Institute, PO Box 16, Tsukuba Norin Kenkyu Danchinai, Ibaraki 305-8687, Japan
| | - Tadashi Ishii
- Forestry and Forest Products Research Institute, PO Box 16, Tsukuba Norin Kenkyu Danchinai, Ibaraki 305-8687, Japan
| | - Naoko Fujita
- Department of Biological Production, Akita Prefectural University, Akita City, Akita 010-0195, Japan
| | - Yasunori Nakamura
- Department of Biological Production, Akita Prefectural University, Akita City, Akita 010-0195, Japan
| | - Yoshiyuki Maeda
- Department of Applied Biology and Chemistry, Faculty of Applied Bio-Science, Tokyo University of Agriculture, Setagaya-ku, Tokyo 156-8502, Japan
| | - Masaaki Yoshiba
- Department of Applied Biology and Chemistry, Faculty of Applied Bio-Science, Tokyo University of Agriculture, Setagaya-ku, Tokyo 156-8502, Japan
| | - Toshiaki Tadano
- Department of Applied Biology and Chemistry, Faculty of Applied Bio-Science, Tokyo University of Agriculture, Setagaya-ku, Tokyo 156-8502, Japan
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Güçlü G, Güçlü K, Keleş S. Competitive removal of nickel (II), cobalt (II), and zinc (II) ions from aqueous solutions by starch-graft-acrylic acid copolymers. J Appl Polym Sci 2007. [DOI: 10.1002/app.26866] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Mostafa KM. Preparation and Characterization of Cotton Textile Graft Copolymers as Cation Exchanger. ACTA ACUST UNITED AC 2005. [DOI: 10.3923/jas.2005.527.531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Khalil MI, Abdel-Halim MG. Preparation of Anionic Starch Containing Carboxyl Groups and its Utilization as Chelating Agent. STARCH-STARKE 2001. [DOI: 10.1002/1521-379x(200101)53:1<35::aid-star35>3.0.co;2-v] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
Various neutral starch derivatives have been prepared by reacting maize starch with mono- and dimethylol resins based on urea, thiourea, and melamine. The factors affecting these reactions were studied. These factors include curing duration, catalyst, and resin concentrations. The starch derivatives so prepared were used in heavy-metal removal from solutions. The sorption ability of those derivatives depends on resin type and metal ions. The sorption values of different starch derivatives follow the order (a) monomethylol resin-starch > dimethylol resin starch; (b) thiourea resin-starch > urea resin-starch > melamine resin-starch. The sorption efficiency (%) of starch derivatives increases with increasing nitrogen content, reaching a maximum value and then decreasing. The sorption values of Hg2+ (mmol/mol resin) of different starch monomethylol derivatives at the maximum values were 1135, 2624, and 2538 for urea, thiourea, and melamine derivatives, respectively. This indicates that urea derivatives act as bidentate ligands, while thiourea and melamine act as tridentate ligands.
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Affiliation(s)
- M I Khalil
- National Research Center, Textile Division Dokki, Cairo, Egypt
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Farag S. Synthesis and Physicochemical Studies of Starch-Sulphonated Phenol Formaldehyde Cationic Exchangers. STARCH-STARKE 1995. [DOI: 10.1002/star.19950470507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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