What enzyme do EPSP inhibitors inhibit, which is necessary for plant growth?

What enzyme do EPSP inhibitors inhibit, which is necessary for plant growth?

• A. Chlorophyll synthase
• B. 5-Enolopyruvylshikimate-3-phosphate synthase
• C. RNA polymerase
• D. ATP synthase

Answer: (B)

EPSP inhibitors specifically target the enzyme 5-Enolopyruvylshikimate-3-phosphate synthase, which plays a critical role in the shikimic acid pathway. This pathway is essential for the biosynthesis of aromatic amino acids such as phenylalanine, tyrosine, and tryptophan in plants, fungi, and some bacteria. These amino acids are vital for protein synthesis and various metabolic functions, making the shikimic acid pathway crucial for plant growth and development. By inhibiting this enzyme, EPSP inhibitors disrupt the production of these essential compounds, ultimately leading to impaired growth and development of the plant. The importance of this enzyme in the metabolic processes of plants is a key reason why EPSP inhibitors can effectively control unwanted vegetation, as they target a pathway not present in animals, thus minimizing harm to non-target organisms. The other choices listed do not directly relate to the specific mechanism of action of EPSP inhibitors in the context of influencing plant growth.

EPSP inhibitors specifically target the enzyme 5-Enolopyruvylshikimate-3-phosphate synthase, which plays a critical role in the shikimic acid pathway. This pathway is essential for the biosynthesis of aromatic amino acids such as phenylalanine, tyrosine, and tryptophan in plants, fungi, and some bacteria. These amino acids are vital for protein synthesis and various metabolic functions, making the shikimic acid pathway crucial for plant growth and development.

By inhibiting this enzyme, EPSP inhibitors disrupt the production of these essential compounds, ultimately leading to impaired growth and development of the plant. The importance of this enzyme in the metabolic processes of plants is a key reason why EPSP inhibitors can effectively control unwanted vegetation, as they target a pathway not present in animals, thus minimizing harm to non-target organisms.

The other choices listed do not directly relate to the specific mechanism of action of EPSP inhibitors in the context of influencing plant growth.