Plastics are very versatile materials that have contributed to the development of society since the 19th century; however, their mismanagement has led to an accumulation of plastic waste in almost every ecosystem, affecting the fauna of the planet. However, recently, some studies have shown that some insects might be able to adapt, consuming a wide range of hydrocarbon base polymers. In this work, the adaptive capacity of larvae when feeding on different synthetic polymers derived from petroleum was studied.
View Article and Find Full Text PDFPhytocystatins are proteinaceous competitive inhibitors of cysteine peptidases involved in physiological and defensive roles in plants. Their application as potential therapeutics for human disorders has been suggested, and the hunt for novel cystatin variants in different plants, such as maqui (), is pertinent. Being an understudied species, the biotechnological potential of maqui proteins is little understood.
View Article and Find Full Text PDFSalinity abiotic stress is increasing day by day due to continuous global warming and climate change. This is also becoming one of the major causes behind the reduction in crop production. Plant-bacteria interaction plays an essential role in improving crop yield without using any chemical fertilizers.
View Article and Find Full Text PDFFor the first time we report the validation of reference genes in plants from a population of blueberry () clones cultured in vitro on a colchicine-supplemented medium. Nodal segment explants of the cultivar Duke were regenerated by organogenesis under different periods of colchicine 1 mg/L exposure (1, 2, 3, 5, 30 days). The clones selected for the study showed variability for phenotypic traits after 2 years of adaptation to field conditions, compared to plants of the donor genotype that were regenerated on a medium without colchicine.
View Article and Find Full Text PDFWe report the case of a 42-year-old woman who was diagnosed with breast cancer that recurred 3 years later, with supraclavicular lymphadenopathy and dermal involvement. The main drug used in the therapy was trastuzumab; however, the association of this drug with docetaxel was not able to decrease or cease the effect of the inflammatory BCA component with erythema and thickening of the skin as well as the supraclavicular lymphadenopathy previously diagnosed. Thus, a combined therapy was required.
View Article and Find Full Text PDFPrognostic markers for cancer can assist in the evaluation of survival probability of patients and help clinicians to assess the available treatment modalities. Gallbladder cancer (GBC) is a rare tumor that causes 165 087 deaths in the world annually. It is the most common cancer of the biliary tract and has a particularly high incidence in Chile, Japan, and northern India.
View Article and Find Full Text PDFColorectal cancer (CRC) is a prevalent tumour throughout the world. CRC symptoms appear only in advanced stages causing decrease in survival of patients. Therefore, it is necessary to establish new strategies to detect CRC through subclinical screening.
View Article and Find Full Text PDFThe relation between the oxidative burst and phenylpropanoid pathways has been studied using the sugarcane cultivar C86-56, which does not release phenolics in agar-base micropropagation systems. In stationary liquid culture, a significant production of phenolic compounds and plant survival were determined in sugarcane plants treated with 5mM H(2)O(2). The spectrophotometer determinations and the gene expression analysis corroborated that releasing of phenolics and soluble θ-quinones was induced during the first 24h of treatment.
View Article and Find Full Text PDFA differential expression study on the Saccharum spp.-Sporisorium scitamineum pathogenic interaction was carried out in the susceptible Ja60-5 and the resistant M31/45 genotypes. Using cDNA-AFLP analysis, a total of 64 transcript-derived fragments (TDFs) was found to be differentially expressed, with the majority (67.
View Article and Find Full Text PDFWe describe the procedures for recovering transgenic sugarcane from co-cultivation of both calli and in vitro plants with Agrobacterium tumefaciens. The correct tissue culture strategies and the use of super-binary vector or super-virulent strain are crucial for the successful sugarcane transformation. Both plant regeneration via calli culture and micropropagation strategies can be optimized to a wide spectrum of sugarcane genotypes, thus the procedures presented here could be applied to genetic engineering of Saccharum spp.
View Article and Find Full Text PDFA procedure for pineapple [Ananas comosus (L.) Merr.] genetic transformation is described, which involves temporary immersion bioreactors (TIB) for selection of transgenic plants.
View Article and Find Full Text PDFA new role for the plant growth-promoting nitrogen-fixing endophytic bacteria Gluconacetobacter diazotrophicus has been identified and characterized while it is involved in the sugarcane-Xanthomonas albilineans pathogenic interactions. Living G.diazotrophicus possess and/or produce elicitor molecules which activate the sugarcane defense response resulting in the plant resistance to X.
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