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Stomata in Medical News

Withering related to impotence

... cell," said Dr Neill. Guard cells are the cells surrounding the stomata pores, which close and open in response to various signals."This offers a ... significantly on crop productivity," he said. "The opening and closing of stomata control evaporation and impact on humidity and ultimately on climate," he ...
Stomata in Biological News

Plant protein 'doorkeepers' block invading microbes, study finds

... stomata, found on the underside of the leaf. The stomata allow gases and water to pass in and out of the ... microbes to gain entrance to the plant. The stomata are each flanked by two guard cells, which ... to the leaf. When the guard cells swell, the stomata close. Conversely, when the water content of the ...

Plant protein 'doorkeepers' block invading microbes, study finds

... stomata, found on the underside of the leaf. The stomata allow gases and water to pass in and out of the ... microbes to gain entrance to the plant. The stomata are each flanked by two guard cells, which ... to the leaf. When the guard cells swell, the stomata close. Conversely, when the water content of the ...

Key link in how plants adapt to climate discovered by Stanford researchers

... that the formation of microscopic pores called stomata (derived from the Greek word stoma, meaning ... blocks activity of a single protein required for stomata development. The findings are described in a paper published Nov. 14 in Science . stomata are found on almost every terrestrial plant on ...

Breakthrough in plant research

... Online Publication (AOP) on 27 February 2008. stomata are tiny pores on the plant leaf surface, through ... ozone in the air or drought. The regulation of stomata is an intensively-studied topic and several ion ... cress. The mutant does not react by closing its stomata as a response to high ozone or carbon dioxide ...

Protein that triggers plant cell division revealed by researchers

... genetic studies. The epidermis of Arabidopsis contains small pores called stomata that allow the plant to breathe and these stomata are generated by asymmetric cell divisions. The three researchers have ...

Novel electric signals in plants

... applying a novel method: Filamentary electrodes were inserted through open stomata directly into the inner leaf tissue and then placed onto the cell walls (see picture). stomata are microscopically small openings in the leaf surface which plants ...

MIT: Human-generated ozone will damage crops

... where crops are grown. In addition, crops are particularly sensitive to ozone, in part because they are fertilized. When crops are fertilized, their stomata open up, and they suck in more air. And the more air they suck in, the more ozone damage occurs, said Reilly. It's a little like going out and ...

Plants give up answers in the war on bacteria

... lines of defense against disease. Pores called stomata are like tiny mouths that open and close during photosynthesis, exchanging gases. In sunshine, the stomata open. In darkness, they close to conserve water. ... and Underwood, however, have discovered that stomata are an intricate part of the plant's immune ...

UCSD study reveals how plants respond to elevated carbon dioxide

... expected to occur this century can cause leaf stomata to close by 20 to 40 percent in diverse plant ... discovered that in the cells surrounding the leaf stomata calcium ion "spikes"--or rapid increases and then ... dioxide, a quick drumbeat was induced, but the stomata opened, rather than closed. Therefore, high ...
Stomata in Biological Definition

Crassulacean acid metabolism

... to protect themselves from the environment. The stomata may be sunken into pits. Some xerophytes shed ... the day for sugars. These plants can close their stomata during the day. These plants close their stomata (tiny pores used for gas exchange) during the ...

Crassulacean acid metabolism

... to protect themselves from the environment. The stomata may be sunken into pits. Some xerophytes shed ... the day for sugars. These plants can close their stomata during the day. These plants close their stomata (tiny pores used for gas exchange) during the ...

Leaf

... The epidermis is covered with pores called stomata (sing., stoma ), part of a stoma complex ... air and the interior of the leaf. Typically, the stomata are more numerous over the abaxial (lower) ... less chloroplasts ... The pores or stomata of the epidermis open into substomatal chambers ...

Stoma

... In botany , a stoma (also stomate ; plural stomata ) is a tiny opening or pore , found mostly on ... pumps. Dicotyledons usually have more stomata on the lower epidermis than the upper epidermis. ... is directly illuminated. Less number of stomata on the upper epidermis can then prevent water ...

Osmoregulation

... modifications to reduce water loss, such as needle-shaped leaves, sunken stomata and thick, waxy cuticles as in the pine. The sand-dune marran grass has rolled leaves with stomata on the inner surface. Osmoregulation in protoctists and animals ...

Photorespiration

... rubisco favors carbon , it can also use oxygen , producing glycolate . This usually occurs when oxygen levels are high; for example, when the stomata (tiny pores on the underside of the leaf ) are closed to prevent water loss. The reaction is: RuBP + rubisco + O 2 → phosphoglycolate ...

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Stomata in Biological Dictionary

Stomata

... stomata are present in the sporophyte generation of ... except ... Dicotyledons usually have more stomata on the lower epidermis than the ... stomata are tiny plant structures found on the outer ...

Spongy mesophyll

... ball-shaped with large intercellular spaces, ... stomata communicate with the air chambers in the spongy ... . Spongy mesophyll . Mesophyll cells. stomata ... spongy mesophyll - layer of plant ... cells and the relative distribution of stomata ... lily comes from these large air spaces The ...

Lower epidermis

... and upper sides of the leaf. ... There are more stomata on the lower epidermis of the leaf than ... lower epidermis of Pereskia leaves. ... are stomata at a density almost as high as that found in ... guard cells in the lower epidermis . Most stomata open into an air space within the ... The ...

Upper epidermis

... layer is next to the upper epidermis . ... Epidermis . The epidermis covers the lower and upper sides of the leaf. ... There are more stomata on the lower epidermis of the leaf than the upper epidermis . ... ... it is worth while coating upper and lower epidermis as often ...

Subsidiary cells

... largest producers of silicon thin film solar in the world, with 169 MWp of production capacity. Six types of stomata: anomocytic, paracytic, stomata with a single subsidiary cell , diacytic, anisocytic, and transitional between diacytic and paracytic, have been ... ...

Stoma

... natural or surgically created (artificial), which connects a portion of the body cavity to the outside environment. Surgical procedures in which stomata are created are ended in the suffix '-ostomy' and begin with a prefix denoting the organ or area being operated on. stoma n. , pl. ...

Photorespiration

... ... Photorespiration occurs when the CO2 levels inside a leaf become low. This happens on hot dry days when a plant is forced to close its stomata to ... Under the hot, dry, sunny conditions that favor photorespiration . ... CAM plants use time to solve the photorespiration problem. ... ...

Guard cell

... guard cell in the Columbia Encyclopedia, Computer Desktop Encyclopedia, computing dictionary. Guard - cell volume can increase up to 50% as stomata open (Raschke and Dickerson, ... Guard - cell protoplasts have been shown to adjust plasma-membrane surface area ... ...

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