Metal in soils and uptake by plants Flashcards
Why do soybeans turn yellow
lack of iron
to be uptake by a plant, a mineral must be ?
soluble
Under high pH conditions, iron is bound to ?
soil particles
what are 2 tasks that proteins in the plant roots can do
- product H+ to lower soil pH
- Change Fe3+ to Fe2+
where is cadmium accumulation happen
Alaska
where did cadmium in soil come from
wind blown dust
what was cadmium in soil in terms of levels
higher than underlying rocks
how does pH of soil affect cadmium
soil acidic so cadmium was mobile for plants
cadmium concentration in twigs and leaves from grayleaf willow
10x higher in shrubs and moss
White tailed ptarmigan
that ate grayleaf willow buds had higher chance of kidney damage
where is molybdenosis happen
sweden
what did molybdenosis lead to
type 2 diabetes mellitus in swedish moose
symtoms of moose wasting disease
diarrhea
emaciation
apathy
osteroporosis
what was found in necropsy study by frank
- high levels of molybdenum and low levels of copper in organ tissues
- high glucose concentrations, hyperglycemia
what does molybdenum do
trace element that controls copper metabolism in ruminants
what does copper defficiency do
imbalance in hypothalamus
defficiency in sex hormones and glucose hormones
Hyperaccumulator plants, what are they
plants that accumulate
cobalt
nickel
cadmium
lead
zinc
excessively
farming hyperaccumulator plants is called
agromining
you can use them to mine metals
can burn for the metals
what is an example of a hyperaccumulator?
Alpine Pennycress
1/3 cadmium
only 1 for Cadmium and zinc together
another word for agromining
phytomining and phytoremediation
what hypothesis explains the hyperaccumulator plant?
elemental defence hypothesis
against herbivores
what can oyster mushrooms clean up
oil, hydrocarbons
what can sunflowers clean up
radioactive isotopes
what can bivalves clean up
anti bacterial, weed killer
