Sentences with phrase «closing stomata»

[closing the stomata to prevent the plant drying out, thereby halting CO2 uptake and growth until water was available]

Plants can minimize water loss by closing stomata, but this must be balanced by the need to take in atmospheric CO2 for sugar production.

These plants react to the warning by closing their stomata — tiny openings on their leaves — to slow down moisture loss.

When conditions become hot and dry, trees conserve moisture, and they do so by closing their stomata.

For example, when plants close their stomata, they use less soil water, changing the amount of soil water available to other plants.

ABA then moves throughout the plant to signal the stressful conditions and close the stomata.

As a result, the stressed trees close their stomata, or the tiny pores that take in carbon dioxide during photosynthesis and release oxygen as a byproduct.

All of this is compounded by the fact that trees close their stomata (surface pores that control gas exchange) when facing drought to prevent water loss from transpiration, but this can collapse the hydraulic transport system.

Some plants may close their stomata at night.

is lost through the stomata where carbon dioxide enters If its hot the plants will close the stomata to keep from loosing water but photosynthesis will slow down due to the lack of carbon dioxide Some plants that live in dry areas have special ways to save water and carry out photosynthesis C4 Plants Have a special chemical pathway that gets carbon dioxide into the Calvin /

Plants in Australia can close stomata to reduce water loss.

Not exact matches

When the plants are deprived of water, the researchers found that stomata take an average of 25 minutes to open, while the amount of time for the stomata to close falls to 45 minutes.

Plant biologists know that stomata open when exposed to light and close in darkness, but the dynamics of this opening and closing have been little studied because there hasn't been a good way to directly measure them in real time.

Because CO2 can aid the growth of plants — and close down stomata as well to protect against O3 invasion — it was unclear how vegetation worldwide would respond to such an increase in emissions of both CO2 and O3.

In previous research, Bais had shown how soil bacteria living among the roots can signal leaf pores, called stomata, to close up to keep invasive pathogens out.

«As a result, modelers have been forced to assume that the stomata of all species open and close in response to environmental conditions in the same way,» he said.

«They are closing down their stomata to try to wait out a drought.»

In response to drought, the pinyons close the tiny openings on their needles known as stomata to conserve water but, by doing so, also block their supply of carbon dioxide, thus shutting down photosynthesis, Adams says.

The stomata open and close depending on the amount of carbon dioxide available in the air and how much they need of it.

Because the stomata (pores on the leaves) of many plants will close at night, water will attempt to squeeze out at the edges and tips of leaves.

Because stomata of the plant usually close at night, water can squeeze out at the edges and tips of leaves, gathering in droplets.

Stomata data show a much larger variation of CO2 in the last millenium (besides higher values in general), in part caused by the smoothing effect of relative slow closing air bubbles in ice cores...

There is contamination of the air in the bubble by water; different results are obtained if the ice is crushed or melted to obtain the air sample; it takes decades for the air bubble to form; the raw data was smoothed out by a 70 year moving average that removed the great annual variability found in the 19th century and Stomata Index (SI) records; closer examination revealed a major flaw in the hypothesis because temperature rises before CO2.

This is normally accomplished on the fly by irising the stoma open and closed as required.

The trees were able to endure such low water potentials and maintain basal levels of metabolism because ecological forcings kept the tree density and leaf area index of the woodland low, physiological factors forced the stomata to close progressively and the trees were able to tap deeper water sources (below 0.6 m) than the grasses.

However, under warming conditions the closing of the stoma may induce overheating (by preventing transpiration) and / or if sustained could decrease carbon fixation [50,51].