For plant physiology, \"Basta\" \"Liberty\", and \"Finale\" are commercial names

Question

For plant physiology, "Basta" "Liberty", and "Finale" are commercial names for the herbicide glufosinate that irreversible binds and blocks the action of glutamine synthase. Glufosinate is thus a herbicide because it prevents :

Soybeans are legumes and form nodules that contain rhizobia nitrogen fixing bacteria. To increase yields, a healthy dose of fertilizer containing potassium chloride , potassium phosphate , and ammonium nitrate was used. After fertilizing , which of the following forms of nitrogen was most likely preferentially used by the soybeans?

osinate is thus a herbicide becams for thefherbicide glufosinate that freversible binds and blocks the action of glutamine Glutamate +NH4 -glutamine Glutamine+ Oxaloglutarate -glutamate ON2 +8e +BHt 16 ATP 2x NH3+ H2 NO3 + NAD(P)H+HNO2 + NAD(P)+ H20 NO2 + 6 Fdred+8H -NH4 +6 Fdox +2 H20

Explanation / Answer

1. C) NH3

The enzyme glutamine synthetase is inhibited by the glufosinate ammonium. As a result, there is accumulation of NH3 inside the cell. Since NH3 is heavily phytotoxic, it would result in death of the cell.

2. D) Nitrate (NO3-)

Nitrates assimilate to be readily used up by the plants.

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.