Tuesday, August 9, 2022

Photosynthesis in cacti is very interesting, what’s different?

Photosynthesis in cacti is very interesting. other plant names cactaceae It is actually known to have many benefits.

Cactus is known to be a plant that can survive for a long time without water. The identity of the cactus is only in the thorns around the leaves.

Apparently, cacti also undergo the process of photosynthesis. How could this happen?

Read also: Photosynthetic Reactions in Plants: Darkness and Light, Here’s the Explanation

This is the process of photosynthesis in cacti

Many plants that perform the process of photosynthesis as the process of manufacturing their foods.

Every plant that contains chlorophyll will certainly carry out this photosynthesis process. The cactus, a plant known as an ornamental plant and similar to dry and barren habitats, is morphologically distinct from other plants.

These differences make cacti a unique mechanism for making food or in this case photosynthesis.

Photosynthesis is a process of making carbohydrates in the form of starch in food.

In general, all plants that contain chlorophyll and chloroplast organelles in their cells are capable of photosynthesis.

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Cactus plants are found not only in desert regions, but also in tropical and sub-tropical climates. The environment will greatly affect the adaptation of the cactus to morphology and physiology.

In photosynthesis, cacti will fix CO2 or carbon. how did this happen?

Read also: What is the carbon cycle, photosynthesis and respiration in plants?

CO2 Fixation Process Event

Basically, the mode of photosynthesis in cacti is still the same as in other plants, that is, during the day. They carry out light absorption as well as photophosphorylation.

However, the cactus will absorb CO2 at night. This is because the stomata in the cactus will remain closed during the day.

As an adaptation the cactus stomata will open at night. As a result, the metabolism of the cactus will be affected.

The metabolism in this cactus is known as crassulacian acid metabolism either Metabolism Assam Crassulesian (CAM).

At night when the air is moist with low temperatures, the stomata absorb CO2 and mix with phosphoenolpyruvate (PEP).

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will become two oxaloacetate With the help of the enzyme PEP-carboxylase. oxaloacetate Then it will bear fruit.

The malate formed as malic acid will later accumulate in the vacuole. This organic acid would be useful in the Calvin cycle when light reactions take place during the day.

The malic acid will undergo decarboxylation to release carbon dioxide and return to PEP. The CO2 would later be useful in the cactus photosynthesis process for the production of food.

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happens in the trunk

Because cactus plants rarely have leaves, all the photosynthesis process takes place in the stem.

This may be because cactus stems contain stomata cells that are useful for capturing light in the process of photosynthesis.

That is why the process of photosynthesis in cacti is different from that of other plants.

However, the purpose of photosynthesis remains the same, that is, to produce its own food source. (R10/HR-Online)

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