Spiral structures of cotton fiber

Abstract

In the present article, data from the microscopic investigation of the morphological structure of a cellular wall and plasmalemma of the Central Asian cotton fiber are given at different stages of their development. The objects under investigation were live hairs of five middle-fiber cotton species (Tashkent-1, 108-F, Namangan-77, Margelan-3, G. llirsutum L.) and the coarse-fiber variety of G. arboreum L., so-called Turfan Gtiza. To observe the cotton hair surface morphology, the original method of gelatinous prints was used. It is shown that, in all investigated samples of cotton cell-hairs, spiral structures are observed in the packing of cellulose microfibrils on the surface of the primary cell wall. Also, it is established that the plasmalemma of a cotton cell-hair makes a spiral movement along the direction of its growth. On the basis of the received data, a conclusion is made about the spiral mechanism for the deposition of cellulose microfibrils on a primary cell wall surface and the spiral movement of plasmalemma.

Characterization of Thermobifida fusca Cutinase-Carbohydrate-Binding Module Fusion Proteins and Their Potential Application in Bioscouring

“…It has been observed that, in addition to cutin, pectin, proteins and other components, there is also a large amount of cellulose on the surface layer of cotton fiber (23). Thus, it is tempting to hypothesize that if the enzyme can be engineered to specifically bind to cellulose through a "gain of function" modification, its concentration on the surface of cotton fiber could increase significantly.…”

Influence of noncontractile motion of plasmalemma upon cotton fiber cell wall structure

“…Namely our observing of row of associates of TC reorientation during cellulose deposition let us to establish fact about rotation of plasmamembrane. The direct proof of plasmamembrane rotation we can see from spiral structure of plasmamembrane (Krakhmalev and Paiziev 2006). Especially actively this process take place on the apical point of cotton hair (Figure 1c).…”

“…Ordinary biological optical microscopy cannot provide to see in-vivo movement the plasmamembrane too because cotton fiber is not transparent for visible light. The offered in present new method replica-reprint and reflected light microscopy let us see not plasmamembrane, but result its pressing to gelatin (Krakhmalev and Paiziev 2006;Krakhmalev and Zakirov 2000). It is not direct method to see dynamical process but we can do clear conclusions from series of instantaneous images of apical part of cotton cell and plasmamembrane at difference growth stage of cotton (from 1 DPA up to full ripening, see Figures 1 -3).…”

“…In first suggestion about rotation plasmamembrane during cellulose synthesis have been made in previous papers of authors (Krakhmalev and Zakirov 2000;Krakhmalev and Paiziev 2004;Krakhmalev and Paiziev 2006). This study is based on using of the improved gelatin print method and reflected optical microscopy (Krakhmalev and Paiziev 2006). Usually this method is using to visualize a morphology of solid surfaces.…”

Textile‐surface interfacial asymmetric polymerization

“…The fibers consist of primary cell wall, cuticle area, secondary cell wall, and lumen area Polymerization occurs at the primary cell wall, cuticle area, and secondary cell wall. Furthermore, cotton cell‐hairs and spiral structures were observed on the surface of the primary cell wall . Such morphologies may produce chiral π‐stacking or macromolecular spiral structure of the resultant PANI layer on the cotton during transcription.…”