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University of Massachusetts Amherst

Theses/Dissertations

Rice

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Full-Text Articles in Life Sciences

Role Of Plasma Membrane Intrinsic Proteins (Pips) Subfamily And Sulfur Nanoparticle Interactions In Metalloids Transport And Tolerance/Sensitivity In Rice, Ahmed Gm Ali Oct 2022

Role Of Plasma Membrane Intrinsic Proteins (Pips) Subfamily And Sulfur Nanoparticle Interactions In Metalloids Transport And Tolerance/Sensitivity In Rice, Ahmed Gm Ali

Doctoral Dissertations

Plasma membrane intrinsic proteins (PIPs) are major intrinsic proteins (MIPs) with the ability to permeate water and small uncharged solutes as well as metalloids including arsenic (As), through the cell membranes. Arsenic is a highly toxic element that occurs naturally in the earth's crust or from anthropogenic activities with a severe poisonous effect on most living organisms. Rice, as the daily staple food for more than half of the world population, accumulates higher As contents than any other economic crop due to its growing conditions in flooded paddy fields. Members from the NOD26-like intrinsic proteins (NIP) subfamily of MIP were …


Studies In The Atomic Spectrometric Determination And Speciation Of Arsenic In Environmental Samples, Nan Wang Aug 2014

Studies In The Atomic Spectrometric Determination And Speciation Of Arsenic In Environmental Samples, Nan Wang

Doctoral Dissertations

The application of work described in this dissertation, the determination of total and arsenic species in water and rice samples, is of considerable societal importance as large numbers of the citizens of many countries around the world are exposed to potentially harmful concentrations of these carcinogenic compounds by daily consumption. The field of analytical chemistry is crucial to support the operation of any treatment to decrease arsenic concentrations as well as any regulations and legislation regarding arsenic in food and the environment. The current goals of research in trace arsenic measurements and speciation are to increase knowledge of the subject …