Sucrose Metabolism for Cellulose Biosynthesis in Colored Cotton Fibers

Abstract

Assays were conducted to examine the contents of cellulose and callose, and the activities of enzymes related to sucrose metabolism at various stages of fiber development in colored cottons and white cotton. The results showed that the cellulose accumulation could be described with Richard curve equations, and the cellulose biosynthesis was reflected by the eigenvalues, especially the maximum biosynthesis rate (Vmax) and the time taken for cellulose rapid biosynthesis (T). The period from 20 days post anthesis (DPA) to 40 DPA is the key stage for cellulose accumulation in colored cotton. During this period reduced activity acid invertase (AI) and β-1,3-glucanase, and decreased accumulation and transformation of callose in colored cotton might limit carbon supply and cellulose accumulation by affecting Vmax and T, thus inhibiting sucrose metabolism during cellulose biosynthesis, then results in poor fiber quality.

Physiological Characteristics Associated with Fiber Development in Two Naturally Colored Cotton Cultivars

“…Thus, the cellulose content also can provide an indication of fiber quality (Dutt et al, 2004; Fan et al, 2013). This is also supported by the research of Yuan et al (2012) and Zhang et al (2017c) who reported that cellulose accumulation in colored cotton fiber increased in an S‐shaped curve, which was not asymmetric. It was assumed that during fiber development in colored cotton, the biosynthesis of pigment (which does not occur in white cotton fiber) affects the accumulation of cellulose.…”

“…The development of cotton fiber is a process of cellulose synthesis and cellulose accumulation. Research has indicated that a higher cellulose content in fiber cells provides for better cotton fiber quality (Pan et al, 2010; Zhang et al, 2017c). Our present work demonstrated that the contents of cellulose in brown and green cotton were both lower than in white cotton, and this may be the reason why fiber quality of colored cotton is inferior to white cotton (Table 1).…”

“…Some researchers have studied the physiological and biochemical differences between naturally colored and white cotton (Zhan et al, 2006; Yuan et al, 2012). However, they primarily focused on the differences in the fiber (Zhang et al, 2017c). It is commonly known that the subtending leaf produces carbohydrates, which supply the energy and molecular basis for the synthesis of cellulose in the fiber.…”

Creation of cotton mutant library based on linear electron accelerator radiation mutation

“…Colored cotton can reduce the bleaching and dyeing components of the textile process and potentially reduce environmental pollution. Therefore, since the colored cotton mutant was discovered, it has become the research focus [ 40 ]. At present, natural colors are limited to brown, green, and red [ 41 ].…”

Blue Light Regulates Cell Wall Structure and Carbohydrate Metabolism of Soybean Hypocotyl

“…The stiffness of pea cotyledons, whose cell walls are rich in galactose, is also significantly enhanced by pectin polysaccharides [ 13 ]. Nonstructural carbohydrates, such as sucrose, can promote the formation of cellulose [ 14 , 15 ], thereby increasing stem elasticity and lodging resistance [ 16 ]. Ishimaru et al [ 17 ] showed that higher starch content in the stems of rice varieties resulted in stronger stems.…”