What is the rate-limiting (regulated)step for stimulating the secretion of aldosterone?

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The rate-limiting (regulated) step for stimulating the secretion of aldosterone is the conversion of angiotensinogen to angiotensin I in the blood, which is catalyzed by the enzyme renin. This step is regulated by factors such as blood pressure, extracellular fluid volume, and sympathetic nervous system activity. Once angiotensin I is formed, it is further converted to angiotensin II by the enzyme angiotensin-converting enzyme (ACE) in the lungs, which stimulates the secretion of aldosterone from the adrenal cortex. However, this step is not rate-limiting because angiotensin-converting enzyme is present in high levels and is not subject to significant regulation.

What Is the Rate-Limiting (Regulated)step for Stimulating the Secretion of Aldosterone