CAM pathway photosynthesis

This lecture explains about the CAM pathway of photosynthesis reaction that helps in minimizing water loss by crassulacean plants.
A second strategy to decrease photorespiration in hot regions
has been adopted by many succulent (water-storing)
plants such as cacti, pineapples, and some members of
about two dozen other plant groups. This mode of initial
carbon fixation is called crassulacean acid metabolism
(CAM), after the plant family Crassulaceae (the
stonecrops or hens-and-chicks), in which it was first discovered.
In these plants, the stomata (singular, stoma),
specialized openings in the leaves of all plants through
which CO2 enters and water vapor is lost, open during the
night and close during the day. This pattern of stomatal
opening and closing is the reverse of that in most plants.
CAM plants open stomata at night and initially fix CO2
into organic compounds using the C4 pathway. These organic
compounds accumulate throughout the night and
are decarboxylated during the day to yield high levels of
CO2. In the day, these high levels of CO2 drive the Calvin
cycle and minimize photorespiration. Like C4 plants,
CAM plants use both C4 and C3 pathways. They differ
from C4 plants in that they use the C4 pathway at night
and the C3 pathway during the day within the same cells. In
C4 plants, the two pathways take place in different cells.
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Thank you for watching the Photosynthesis lecture on CAM pathway.

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Thank you so much sir..your explanations help me a lot tp understand the whole process of photosynthesis... really too much helpful 😊😊🥺❤️

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[@alfiyasd8212]

You did it excellent sir .... but this is so hard 🤦‍♀️to spot the difference between these three pathways .... but still It just needs the practice or revision which I can't coz of less time available for exams.... but really explaination is really amazing👍👌

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[@Iamamitkumar-1999]

Thank you Dada . Sob gulo ei bujlam C3 C4 and Cam.

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In the day time the tempreture is very very high and it's dry. 🤗🤗🤗 Well superbbbbb lecture thanku so much sir🥰🥰🥰🥰

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Your video give me tru concpt of c3,c4 nd cam ..thnku soo much ..i m v v happy

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And I also understood without any doubt.

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[@succulentgardenermumbai]

Hello Sir...i am a hobby gardener....
As u explained...CAM pathway....CO2 is taken in....
So my question is....CAM pathway plants..do not release Oxygen....when they open stomata in night time...or they only produce starch and sugar

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One question :- Is light reaction is a universal to all type plants ? because it also needs water and light... and how it is possible for the plants who live in the desert region who can't afford that much amount of water ...

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I m also confused about it

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From where the oxygen will be released Sir ??

[@jack-to6ly]

Can you also explain the production of NADP and NADPH

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Okay

[@vibhasashukla73459]

Sir,
Is light reaction found in cam plant and c4 plant.
Because without light reaction, how ATP and NADP produced (as assimilatory power) to fix the carbon dioxide by Calvin cycle.

[@binta-e-abbas3771]

Somil Biology thanku for this it is very helpful .But can u plz explain the opening and closing of stomata "guard cell" in CAM plants

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Sir plz required for CAM pathway complete diagram . you have a required a diagram of this video but day time and night time diagram are separated

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Why is oxaloacetate not transferred to vacuole and only malate? Is it because OAA cannot pass the chloroplast membrane?

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[@tanvidhatrak9396]

If succulents are kept in general atmosphere,will they carry out C3 or CAM?

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Day time m OAA nhi bna?

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[@biplabmandal9548]

Sir, is cam plant produce oxygen?
If they produce oxygen than when it released?
Because stomata is closed during day time?

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[@zaschamann8919]

Hello, fantastic video. Was just wondering about one part that you didn't cover. If CAM plants have closed stomata during the day, when do they release the 02 they produce during the light reaction? Do they store the 02 during the day and then release it when the stomata open up at night?
I am asking as i have seen claims about certain plants (like snake plant, a CAM plant) releasing oxygen at night and i want to fact check this.

[@biplabmandal9548]

Zascha Mann I also have the same query..

[@WiseUpRiseUp]

Would also like to know...

[@ehteshamshaikh2140]

Oxygen evolution is not related to stomatal opening, since oxygen is evolved in light reaction of photosynthesis where two water molecules are broken down by oxygen evolving complex to relase one molecule of oxygen and four hydrogen also 4 electrons are released which are then passed to Photosystem 2.

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Thnx

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Please make a lecture on biological rhythms also....

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Malate also means malic aacid

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