Cotton flavonoid structural genes related to the pigmentation in brown fibers

Xiao, Yazhong; Zhang, Zhengsheng; Yin, Meng; Luo, Ming; Li, Xianbi; Hou, Lei; Pei, Yan

doi:10.1016/j.bbrc.2007.04.084

Cited by 76 publications

(70 citation statements)

References 18 publications

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“…The coloration of the cotton used to prepare the nanofibers is natural, and obtained using genetic breeding techniques, hence avoiding the need for synthetic dyes that could have adverse effects in humans and the environment. The color results from the presence of natural pigments, including flavonoid compounds such as flavonone, flavonol, and anthocyanidin, 29,30 with the final color determined by genetic factors and unknown environmental factors.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the genotoxicity of cellulose nanofibers

Lima¹,

Mattoso²,

Feitosa³

et al. 2012

IJN

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Background: Agricultural products and by products provide the primary materials for a variety of technological applications in diverse industrial sectors. Agro-industrial wastes, such as cotton and curaua fibers, are used to prepare nanofibers for use in thermoplastic films, where they are combined with polymeric matrices, and in biomedical applications such as tissue engineering, amongst other applications. The development of products containing nanofibers offers a promising alternative for the use of agricultural products, adding value to the chains of production. However, the emergence of new nanotechnological products demands that their risks to human health and the environment be evaluated. This has resulted in the creation of the new area of nanotoxicology, which addresses the toxicological aspects of these materials. Purpose and methods: Contributing to these developments, the present work involved a genotoxicological study of different nanofibers, employing chromosomal aberration and comet assays, as well as cytogenetic and molecular analyses, to obtain preliminary information concerning nanofiber safety. The methodology consisted of exposure of Allium cepa roots, and animal cell cultures (lymphocytes and fibroblasts), to different types of nanofibers. Negative controls, without nanofibers present in the medium, were used for comparison. Results:The nanofibers induced different responses according to the cell type used. In plant cells, the most genotoxic nanofibers were those derived from green, white, and brown cotton, and curaua, while genotoxicity in animal cells was observed using nanofibers from brown cotton and curaua. An important finding was that ruby cotton nanofibers did not cause any significant DNA breaks in the cell types employed. Conclusion: This work demonstrates the feasibility of determining the genotoxic potential of nanofibers derived from plant cellulose to obtain information vital both for the future usage of these materials in agribusiness and for an understanding of their environmental impacts.

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Section: Resultsmentioning

confidence: 99%

Evaluation of the genotoxicity of cellulose nanofibers

Lima¹,

Mattoso²,

Feitosa³

et al. 2012

IJN

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“…In China, researchers have selected brown-fiber cultivars (Xiao et al 2007). However, the fiber characteristics of colored cotton are always inferior to those of white lint.…”

Section: Breeding Of Colored Cottonmentioning

confidence: 99%

Plant breeding in the semiarid region of Brazil: examples of success

Queiróz

Barros

Carvalho

et al. 2012

Crop Breed. Appl. Biotechnol.

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“…CHI is mostly encoded by a single gene except for Petunia that contains a second gene homologous to CHI (Van Tunen et al 1988). Previous studies primarily focused on cloning the gene and/or cDNAs and then studying the regulation mechanism at the transcriptional level (Sparvoli et al 1994, Druka et al 2003, Kim et al 2004, Li et al 2006, Xiao et al 2007). However, little is known about the regulation of this enzyme at protein level and about its biological significance.…”

Section: Introductionmentioning

confidence: 99%

Chalcone isomerase in grape vine: gene expression and localization in the developing fruit

Wang¹,

Wang²,

Wan³

et al. 2012

Biol. plant.

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Chalcone isomerase (CHI, EC 5.5.1.6) is an entrance enzyme in the flavonoid biosynthesis, which catalyzes the conversion of chalcones to flavanones. In this study, the full-length CHI cDNA from grape vine (Vitis vinifera L.) was cloned, the recombinant protein was purified and the polyclonal antibody was prepared. Using these tools, the expression and tissue localization of CHI in developing grape berry was analyzed by RT-PCR, gel blot hybridization and immunohistochemical techniques. The expression of CHI was dependent on developmental stage, and CHI protein was mainly distributed in vascular bundles throughout all the stages of berry development, which suggested that flavonoids in the berry might have been partially synthesized in situ.

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Cotton flavonoid structural genes related to the pigmentation in brown fibers

Cited by 76 publications

References 18 publications

Evaluation of the genotoxicity of cellulose nanofibers

Evaluation of the genotoxicity of cellulose nanofibers

Plant breeding in the semiarid region of Brazil: examples of success

Chalcone isomerase in grape vine: gene expression and localization in the developing fruit

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