Friday, October 7, 2011

Compare Nutrient Acquisition by Fungi and Plants

If you order your research paper from our custom writing service you will receive a perfectly written assignment on Compare Nutrient Acquisition by Fungi and Plants. What we need from you is to provide us with your detailed paper instructions for our experienced writers to follow all of your specific writing requirements. Specify your order details, state the exact number of pages required and our custom writing professionals will deliver the best quality Compare Nutrient Acquisition by Fungi and Plants paper right on time.

Out staff of freelance writers includes over 120 experts proficient in Compare Nutrient Acquisition by Fungi and Plants, therefore you can rest assured that your assignment will be handled by only top rated specialists. Order your Compare Nutrient Acquisition by Fungi and Plants paper at affordable prices with!

Upon considering nutrition the primary factor to take into consideration is the metabolic strategy of the organism in question. Fungi are heterotrophic, obtaining both carbon and energy from organic compounds; they are chemo-organotrophs. Plants are autotrophic, they obtain their carbon from atmospheric CO and their energy from light; they are photolithotrophs. The nutritional requirement of the organism is thus dictated by its nutritional strategies, this essay will concern itself with the comparison of molecules absorbed, mechanisms, regulation and organs of absorption.

Plants can synthesize their organic molecular compounds out of inorganic nutrients, the processes of energy transduction and carbon fixation occur in the chloroplasts in the reaction of photosynthesis. Plant leaves have many physiological adaptations to ensure maximal rates of photosynthesis, however there are many other nutrients required by plants and it is the acquisition of mineral nutrients via root absorption that will be focused upon.

Fungi entail an organic carbon source, but they also have a requirement for inorganic ions. The essential elements required by plants and fungi are very similar, both plants and fungi need macronutrients, N, P, K, Mg, Ca, S, but plants also require Fe as a macronutrient, whereas fungi require it as a micronutrient. The micronutrients commonly required are Cu, Zn, Mn, Mo, and plants also require B and Ni.

Plants must obtain all of their minerals from the soil, and they are taken up as inorganic ions as they re found in the soil, the plant cannot chemically breakdown molecules. Fungi utilise both organic and inorganic sources to obtain mineral ions. Fungi absorb nutrients through the plasma lemma as low molecular weight compounds, and as bioorganic chemicals usually exist as insoluble macromolecular complexes, the fungi secrete exocellular enzymes to break them down into their soluble monomeric units.

Write my Essay on Compare Nutrient Acquisition by Fungi and Plants

essay writing service

In plants ion uptake occurs in regions of the root younger than the suberization of the exodermis, usually at the root tip. Similarly both enzyme secretion and nutrient uptake in fungi occur at the nascent tip where the wall is thin and deformable. The mechanisms for uptake utilize various transporters in the plasma membrane, in plants cations are driven through uniports by the electrochemical gradient, and anions are taken up by secondary active transport through H+ cotransporters. In fungi both facilitated and passive diffusion and active transport mechanisms are used to take up nutrients, they also have the mechanisms of insoluble sinks, immobile binding sites and metabolic sinks for accumulation of nutrients in hyphae without active transport and siderophores for the uptake of iron.

In plants and fungi when the region local to the organ of uptake is depleted of nutrients, the roots and hyphae respectively extend into a fresh area; this overcomes the limitations of diffusion rates (and bulk flow in soil) to a stationary cell.

Fungi, unlike plants, can regulate their metabolism, via catabolite repression, whereby fungi utilise the nutrient source that is in the greatest abundance and switch off unnecessary metabolism.

Fungi also breakdown older regions and the products are absorbed by the new regions, plants can have senescing regions but it is not a continual process.

The nutrient acquisition of both types of organisms is improved when they are in a symbiotic association and form mycorrhizae, the plants supplying the organic nutrients and the fungi improving the absorption of mineral ions and water.

There are aspects of fungal and plant nutrition that are very similar, when considering mineral ions, however it is the lack of photosynthetic ability in fungi that mean the two organisms are also very different.

Molecular Biology of the Cell

Alberts et al.

rd Edition

Animal Physiology Randall, Burggren, French

4th Edition

Plant Physiology Salisbury and Ross

rd Edition

Plant Physiology Taiz, Zeiger

nd Edition

Please note that this sample paper on Compare Nutrient Acquisition by Fungi and Plants is for your review only. In order to eliminate any of the plagiarism issues, it is highly recommended that you do not use it for you own writing purposes. In case you experience difficulties with writing a well structured and accurately composed paper on Compare Nutrient Acquisition by Fungi and Plants, we are here to assist you. Your persuasive essay on Compare Nutrient Acquisition by Fungi and Plants will be written from scratch, so you do not have to worry about its originality.

Order your authentic assignment from and you will be amazed at how easy it is to complete a quality custom paper within the shortest time possible!

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.