mesophyll
plant leaf tissue located between the upper and the lower epidermis
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
mesophyll
(mez-oh-fil) [Gk. mesos, middle + phyllon, leaf]
The ground tissue of a leaf, sandwiched between the upper and lower epidermis and specialized for photosynthesis.
messenger RNA (mRNA) ...
mesophyll Layer of leaf tissue between the epidermis layers; literally meaning "middle of the leaf". PICTURE
mesophytic leaves The leaves of plants that grow under moderately humid conditions with abundant soil and water.
mesophyll
The ground tissue of a leaf, sandwiched between the upper and lower epidermis and specialized for photosynthesis.
Mesophyll the middle layer of a leaf
(meso = middle; phyll = leaf)
Mesopotamia the area between the Tigris and Euphrates Rivers‚ also known as Babylon‚ Persia‚ and now Iran/Iraq
(meso = middle; potam = a river) ...
[edit] Mesophyll
Most of the interior of the leaf between the upper and lower layers of epidermis is a parenchyma (ground tissue) or chlorenchyma tissue called the mesophyll (Greek for "middle leaf").
mesophyll Photosynthetic middle layer in the blade of a leaf; typically composed of palisade and spongy parenchyma.
mesophyte A plant that grows in soils that contain moderate or intermediate amounts of moisture.
The mesophyll is the mid-section of a leaf, located between the upper and lower epidermal layers. Not only is vasculature found in the mesophyll, but also the ground tissue of a leaf.
Dense layers of mesophyll cells surround the bundle-sheath cells of C4 plants. Both the bundle-sheath cells and the rings of mesophyll cells are photosynthetic.
Below: A cross-section of a C4 leaf.
The Calvin Cycle in C4 Leaves ...
The inner ring, called Bundle Sheath Cells, contain starch-rich chloroplasts lacking grana which differ from those in mesophyll cells present as the outer ring. Hence, the chloroplasts are called dimorphic.
The OAA is converted to Malic Acid and then transported from the mesophyll cell into the bundle-sheath cell, where OAA is broken down into PEP plus carbon dioxide.
carbon dioxide is initially fixed in mesophyll cells, but the Calvin cycle is active in bundle sheath cells in leaves of C4 plants.
D.
less ATP is used overall for sugar biosynthesis in C4 than in C3 plants ...
After entering through stomata, CO2 diffuses into a mesophyll cell.
Being close to the leaf surface, these cells are exposed to high levels of O2, but
have no RUBISCO so cannot start photorespiration (nor the dark reactions of the Calvin cycle).
C4 pathway A means by which four-carbon compounds, such as oxaloacetate and malate, carry carbon dioxide from mesophyll cells in contact with the air to bundle-sheath cells, which are the major sites of photosynthesis.
 See also: Plant, Cells, Trans, Leaf, Photosynthesis
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