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Humic Acid Alleviates Fe Chlorosis in Graminaceous Plants Through Coordinated Fe-Dependent and Fe-Independent Mechanisms.
Front Plant Sci
February 2022
BACh Research Group, Department of Environmental Biology, Instituto de Biodiversidad y Medioambiente (BIOMA), University of Navarra, Pamplona, Spain.
Many studies have shown the close relationship between the beneficial action of soil and sedimentary humic acids on the growth of plants cultivated in calcareous soils and their ability to improve Fe plant nutrition. These results have been ascribed to the humic acid (HA) capability to improve Fe solubility and bioavailability. However, other effects more related to a humic acid action on the specific mechanisms activated in roots of plants under Fe deficiency cannot be ruled out.
View Article and Find Full Text PDFBrowning white adipose tissue using adipose stromal cell-targeted resveratrol-loaded nanoparticles for combating obesity.
J Control Release
May 2021
Department of Nutritional Sciences, Texas Tech University, Lubbock, TX 79409, USA; College of Health Solutions, Arizona State University, Phoenix, AZ 85004, USA. Electronic address:
Enhancing thermogenic energy expenditure via promoting the browning of white adipose tissue (WAT) is a potential therapeutic strategy to manage energy imbalance and the consequent comorbidities associated with excess body weight. Adverse effects and toxicities of currently available methods to induce browning of WAT have retarded exploration of this promising therapeutic approach. Targeted delivery of browning agents to adipose stromal cells (ASCs) in subcutaneous WAT to induce differentiation into beige adipocytes may overcome these barriers.
View Article and Find Full Text PDFShoot iron status and auxin are involved in iron deficiency-induced phytosiderophores release in wheat.
BMC Plant Biol
June 2018
Department of Environmental Biology (BACh Group), School of Sciences, University of Navarra, Pamplona, Navarra, Spain.
Background: The release of phytosiderephores (PS) to the rhizosphere is the main root response to iron (Fe) deficiency in graminaceous plants. We have investigated the role of the Fe status in the shoot as well as of the signaling pathways controlled by three relevant phytoregulators - indolacetic acid (IAA), ethylene and nitric oxide (NO) - in the regulation of this root response in Fe-starved wheat plants. To this end, the PS accumulation in the nutrient solution and the root expression of the genes encoding the nicotianamine aminotransferase (TaNAAT) and ferritin (TaFER) have been evaluated in plants subjected to different treatments.
View Article and Find Full Text PDFNanospray liquid chromatography/tandem mass spectrometry analysis of steroids from gray whale blubber.
Rapid Commun Mass Spectrom
July 2017
The Institute of Environmental and Human Health, Texas Tech University, Lubbock, TX, USA.
Rationale: Analysis of steroids from precious blubber biopsies obtained from marine mammals, especially endangered species, can provide valuable information on their endocrine status. Challenges with currently used ELISA methodology include lack of absolute quantitation and incompatibility with multiple steroids analysis due to limited biopsy mass. Development of a sensitive, accurate analytical method for this purpose is critical.
View Article and Find Full Text PDFPlacentation in watersnakes I: Placental histology and development in North American Nerodia (Colubridae: Natricinae).
J Morphol
May 2017
Department of Biology, Boston University, Boston, Massachusetts, 02215.
As part of a broad survey of placental structure, function, and evolution in reptilian sauropsids paraffin-section histology was used to study microscopic anatomy of the uterus and fetal membranes of three species of North American watersnakes (Nerodia: Colubridae). The pre-ovulatory uterus is poorly vascularized with inactive shell glands. These shell glands are activated during vitellogenesis but regress during pregnancy.
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