SUCROSE METABOLISM FOR CELLULOSE BIOSYNTHESIS IN COLORED COTTON FIBERS

2017 ◽  
Vol 54 (01) ◽  
pp. 51-56
Author(s):  
Meiling Zhang
2020 ◽  
Vol 164 ◽  
pp. 06015
Author(s):  
Kseniia Illarionova ◽  
Sergey Grigoryev

The aim of research was to characterize epiphyte micromycetes observed on variable cotton fibers accessions, to estimate the range of fiber destruction and select cotton, which were the most resistant to fungus damage. The accessions of differently colored Upland Cotton varieties (Gossypium hirsutum L.) evaluated: eleven cotton of natural green, twelve – of brown and eleven of conventional white color. Cotton plants have been grown in Sothern Federal District, RF. The fiber samples for the study were placed into a thermostat in sterile Petri dishes on moistened filter paper in order to stimulate the development of mycelium or sporulation of fungi naturally occurred on fibers. Incubation carried out in a thermostat at a +24-28 °C, humidity of 90-100% and exposed for 28 days. The samples examined with a microscope or binocular magnifier. Aspergillus ustus (Bainier), A. fumigatus Fresen., A. niger v. Tiegh., A. flavus Link, Penicillium aurantiogriseum Dierckx, P. notatum Westling, Rhizopus nigricans Ehrenb. and Alternaria alternata (Fuier) Keissler were detected. Compared with exposed white, accession of green and brown colors were significantly resistant to fungus. The mean of destruction (K) of white cotton varied up to 0.95, but colored accessions not exceeded 0.3 (initial destruction of the surface, not affecting internal fiber’s structure).


Crop Science ◽  
2007 ◽  
Vol 47 (4) ◽  
pp. 1540-1546 ◽  
Author(s):  
Shuijin Hua ◽  
Xuede Wang ◽  
Shuna Yuan ◽  
Mingyan Shao ◽  
Xiangqian Zhao ◽  
...  

1997 ◽  
Vol 67 (7) ◽  
pp. 529-536 ◽  
Author(s):  
Y.-L. Hsieh ◽  
X.-P. Hu ◽  
A. Nguyen

Single fiber strengths and crystalline structures of greenhouse-grown Maxxa Acala cotton fibers at varying stages of development and at maturity are reported and compared with those of SJ-2 cotton fibers. Single fiber breaking forces of the Maxxa variety increase most significantly during the fourth week of fiber development; these increases correlate to the 60 to 90 mg seed fiber weight range. The forces required to break single fibers are similar for the SJ-2 and Maxxa varieties through the end of the fourth week of development. Beyond 30 dpa, both single fiber breaking forces and tenacities of the Maxxa cotton fibers are higher than those of the SJ-2 cotton fibers. Four waxd peaks located near 2θ angles of 14.7, 16.6, 22.7, and 34.4° are characteristic of the 101, 101, 002, and 040 reflections of cellulose I, respectively. The 002 peak intensity increases greatly during cellulose biosynthesis, indicating improved alignment of the glucosidic rings and improved order of atoms located within the glucosidic rings as the secondary cell wall thickens. The overall crystallinity and apparent crystallite sizes normal to the 101, 101, and 002 planes increase with fiber development for both varieties. Within each variety, the single fiber breaking forces are positively related to both the overall crystallinity and crystallite sizes. Between these two varieties, increasing breaking forces and tenacities appear to be related more to crystallite size than to crystallinity.


2009 ◽  
Vol 97 (2) ◽  
pp. 415-419 ◽  
Author(s):  
E. Corradini ◽  
E. M. Teixeira ◽  
P. D. Paladin ◽  
J. A. Agnelli ◽  
O. R. R. F. Silva ◽  
...  

2015 ◽  
Vol 86 (3) ◽  
pp. 256-263 ◽  
Author(s):  
Mingbo Ma ◽  
Shaohong Luo ◽  
Zhihua Hu ◽  
Zhirong Tang ◽  
Wenlong Zhou

2018 ◽  
Vol 197 ◽  
pp. 246-252 ◽  
Author(s):  
R.H. Blas-Sevillano ◽  
T. Veramendi ◽  
B. La Torre ◽  
C.E. Velezmoro-Sánchez ◽  
A.I. Oliva ◽  
...  

2015 ◽  
Vol 7 (14) ◽  
pp. 5869-5875 ◽  
Author(s):  
Maria Ivanda S. Gonçalves ◽  
Welma T. S. Vilar ◽  
Everaldo Paulo Medeiros ◽  
Márcio José Coelho Pontes

This study proposes the use of digital images and multivariate analysis as an alternative methodology for the classification of naturally colored cotton fiber, according to cultivar type.


2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Zhonghua LI ◽  
Qian SU ◽  
Mingqi XU ◽  
Jiaqi YOU ◽  
Anam Qadir KHAN ◽  
...  

Abstract Background Naturally-colored cotton has become increasingly popular because of their natural properties of coloration, UV protection, flame retardant, antibacterial activity and mildew resistance. But poor fiber quality and limited color choices are two key issues that have restricted the cultivation of naturally-colored cotton. To identify the possible pathways participating in fiber pigmentation in naturally-colored cottons, five colored cotton accessions in three different color types (with green, brown and white fiber) were chosen for a comprehensive analysis of phenylpropanoid metabolism during fiber development. Results The expression levels of flavonoid biosynthesis pathway genes in brown cotton fibers were significantly higher than those in white and green cotton fibers. Total flavonoids and proanthocyanidin were higher in brown cotton fibers relative to those in white and green cotton fibers, which suggested that the flavonoid biosynthesis pathway might not participate in the pigmentation of green cotton fibers. Further expression analysis indicated that the genes encoding enzymes for the synthesis of caffeic acid derivatives, lignin and lignan were activated in the developing fibers of the green cotton at 10 and 15 days post-anthesis. Conclusions Our results strengthen the understanding of phenylpropanoid metabolism and pigmentation in green and brown cotton fibers, and may improve the breeding of naturally-colored cottons.


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