Sieve Elements Comparative Structure, Induction and Development [Paperback]

1 Algae.- 1.1 Requirement for Medium-Distance and Long-Distance Transport in Algae.- 1.2 Medium-Distance Transport.- 1.3 Long-Distance Transport.- 1.4 Conducting Cells of Red Algae.- 1.5 Conducting Cells in Brown Algae.- 1.5.1 General Remarks.- 1.5.2 Conducting Cells in Dictyotales, Scytosiphonales, Desmarestiales and Fucales.- 1.5.3 Sieve Elements in Laminariales.- 2 Mosses.- 2.1 Introduction.- 2.1.1 Overview.- 2.1.2 Terminology.- 2.2 General Organization of Conducting Tissues in Mosses.- 2.2.1 The Gametophyte.- 2.2.2 The Sporophyte.- 2.3 Structure of Sieve Elements.- 2.3.1 General Features of Moss Sieve Elements.- 2.3.2 Differentiating and Mature Sieve Elements.- 2.4 Associated Parenchyma.- 3 Seedless Vascular Plants.- 3.1 Introduction.- 3.2 The Sieve-Element Protoplast.- 3.2.1 Nucleus.- 3.2.2 Endoplastic Reticulum.- 3.2.3 Plastids and Mitochondria.- 3.2.4 Dictyosomes.- 3.2.5 Mierotubules and Microfilaments.- 3.2.6 Plasmalemma and Tonoplast.- 3.2.7 Refractive Spherules.- 3.3 The Wall.- 3.4 The Sieve Areas.- 3.5 Parenchymatous Cells Associated with the Sieve Elements.- 3.6 Longevity of the Sieve Elements.- 3.7 Comments on Terminology.- 4 Conifers.- 4.1 Introduction.- 4.2 General Description.- 4.2.1 Primary and Secondary Phloem.- 4.2.2 Shape and Size of Sieve Cells.- 4.3 Development of the Sieve Cell.- 4.3.1 The Nucleus.- 4.3.2 Plastids.- 4.3.3 Mitochondria.- 4.3.4 Dictyosomes.- 4.3.5 Endoplasmic Reticulum (ER) and Ribosomes.- 4.3.6 Vacuole and Ground Plasm.- 4.3.7 Structural Proteins.- 4.3.8 The Wall.- 4.3.9 Intercellular Communication.- 4.4 Strasburger Cells.- 5 Cycads and Gnetophytes.- 5.1 Introduction.- 5.2 Cycads.- 5.2.1 Organization and Composition of the Phloem.- 5.2.2 Ultrastructure of the Sieve Elements.- 5.2.3 Parenchymatous Cells Associated with the Sieve Elements.- 5.3 Gnetophytes.- 5.3.1 Organization and Composition of the Phloem.- 5.3.2 Ontogeny and Structure of the Mature Sieve element.- 5.3.3 Parenchymatous Cells Associated with the Sieve Elements.- lS8