Dicots

Several CHX samples were isolated from the leaves and barks of tropical dicots such as the Litsea species [3]. The mucilage-forming seeds of Plantago sp. contain very complex heteroxylans [53,54]. For the CHX from Plantago major seeds [53], a (1 3, 1 -> 4)-mixed-linkage xylan backbone has... 

These extensive alterations in cell structure and the biochemical machinery are indicative of entry into an ametabolic condition. In this condition damage from free radicals is potentially decreased, certainly the loss of chlorophyll and chloroplast structure removes a major source of free radical generation. About 50% of the extremely desiccation tolerant monocots exhibit extensive loss of chlorophyll and ultrastructural organisation when desiccated. Dicots, ferns and bryophytes retain most of their chlorophyll and exhibit small changes in structure when dry (see Gaff,... 

The vascular flora of the Juan Fernandez Islands consists of 361 species and includes 53 ferns, 65 monocots, and 243 dicots. There are 126 endemic species, 12 endemic genera, and one endemic family, Lactoridaceae (Stuessy et ak, 1992). A considerable amount of work has gone into attempts to establish evolutionary... 

YU o, JUNG w, SHI J, CROES R A, FADER G M, MCGONIGLE B and ODELL J T (2000) Production of the isoflavones genistein and daidzein in non-legume dicot and monocot tissues. Plant Physiol. 124 (2) 781-94. 

Miihlecker, W. and Krautler, B., Breakdown of chlorophyll constitution of nonfluo-rescing chlorophyll-catabolites from senescent cotyledons of the dicot rape. Plant Physiol. Biochem., 34, 61, 1996. 

The primary walls of growing plant cells are composed of 90% carbohydrate and 10% protein (51). Carbohydrate in the primary wall is present predominantly as cellulose, hemicellulose, and pectin. The pectic polysaccharides, are defined as a group of cell wall polymers containing a-l,4-linked D-galactosyluronic acid residues (62,76). Pectic polysaccharides are a major component of the primary cell waU of dicots (22-35%), arc abundant in gymnosperms and non-graminaceous monocots, and are present in reduced amounts (-10%) in the primary walls of the graminaceae (27,62). 

E. Bar-Ness, Y. Chen, Y. Hadar, H. Marschner, and V. Romheld, Siderophores of Pseudomonas puiida as an iron source for dicot and monocot plants. Iron Nutrition and Interactions in Plants (Y. Chen and Y. Hadar, eds.), Kluwer Academic Publishers, Boston, 1992, pp. 271-281. 

K. H. Wolfe, M. Gouy, Y-W Yang, P. M. Sharp, and W. H. Li, Date of the monocot-dicot divergence estimated from chloroplast DNA sequence data. Proc. Nall. Acad. Sci. U.S.A. 86 6201-6205 (1989). 

Amaranthus palmeri S. Wats. 25 Dicot Palmer Amaranth... 

Figure 4.1 (a) Mechanism of iron absorption of Strategy I in the roots of dicots and non-graminaceous monocots, (b) Mechanism of iron absorption of Strategy II in the roots of graminaceous plants. Reprinted from Mori, 1998, by courtesy of Marcel Dekker, Inc. 

A compilation of structure-function relationships for plant cells is depicted in Table 2 while Table 3 categorizes their locations within plant tissues. A color atlas of plant structure has been published by Bowles (102). The reader is referred to Esau (103), Fahn (105), Fosket (108), Maseuth (106), Moore and Clark (109), Steeves and Sussex (104), and Raven et al. (107) for in-depth discussions of both the morphology and physiology of stems, roots, leaves, and flowers, i. e., plant organs. Certain of these volumes consider the structural differences between monocot and dicot roots and stems. 

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