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Carré MH, Haynes D. The Estimation of Pectin as Calcium Pectate and the Application of this Method to the Determination of the Soluble Pectin in Apples. Biochem J 2006; 16:60-9. [PMID: 16743070 PMCID: PMC1259056 DOI: 10.1042/bj0160060] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- M H Carré
- Department of Plant Physiology and Pathology, Imperial College of Science and Technology
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Norris FW. The nature of the pectic substances of flax: A preliminary investigation. Biochem J 2006; 23:195-8. [PMID: 16744203 PMCID: PMC1254011 DOI: 10.1042/bj0230195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- F W Norris
- The Department of Biochemistry, University of Birmingham
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Hardy F. The Extraction of Pectin from the Fruit Rind of the Lime (Citrus medica acida). Biochem J 2006; 18:283-90. [PMID: 16743304 PMCID: PMC1259415 DOI: 10.1042/bj0180283] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- F Hardy
- Imperial College of Tropical Agriculture, Trinidad, B.W.I
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Norris FW, Schryver SB. The Pectic Substances of Plants. Part III: The Nature of Pectinogen and its Relation to Pectic Acid. Biochem J 2006; 19:676-93. [PMID: 16743560 PMCID: PMC1259241 DOI: 10.1042/bj0190676] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- F W Norris
- The Biochemical Department, Imperial College of Science and Technology, London, S.W. 7
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Clayson DH, Norris FW, Schryver SB. The Pectic Substances of Plants. Part II. A Preliminary Investigation of the Chemistry of the Cell-walls of Plants. Biochem J 2006; 15:643-53. [PMID: 16743035 PMCID: PMC1259028 DOI: 10.1042/bj0150643] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- D H Clayson
- The Biochemical Department, Imperial College of Science and Technology
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Abstract
It is a striking feature of the growth of any highly organised plant body that the construction of new protoplasm and consequent formation of new cells is usually strictly localised to certain definite regions, known generally, as the meristematic tissues. In the normal flowering plant, the main meristematic regions of the axis are found at the apices of stem and root as the apical or polar meristems and distributed in the intercalary region as two thin cylinders of cambial meristem, one between xylem and phloem, the vascular cambium, the other the cork phellogen, situated near the periphery. No tissues are more important in plant development than these meristematic regions, but so far their study has mainly been carried out by cytological methods, which have supplied much information as to the structural organisation of the protoplast, and especially of the nucleus. In the present paper, two of these meristematic regions, namely, the polar meristems of shoots and roots, are studied with reference only to the biochemical changes that proceed within the wall separating the protoplasts. Originally these walls are extremely thin, and from general considerations, as well as from cytological observations upon the phenomena at the completion of anaphase, it would appear that these walls, commencing as interfaces in a protein-containing medium, may be regarded as composed at first mainly of protein. The original wall may be homogeneous in physical structure, but will be of extremely complex chemical nature. From the observations that follow it would appear that its subsequent history represents chemically a progressive simplification; the constituent substances segregate into special lamellæ as they are released, so that the change is accompanied by an increasing complexity of organisation, of which the distinction between middle lamella and inner wall is the first visible indication.
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