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Is N‐feedback involved in the regulation of nitrogenase activity in Medicago truncatula?
Journal of Plant Nutrition and Soil Science ( IF 2.6 ) Pub Date : 2019-12-19 , DOI: 10.1002/jpln.201900432
Saad Sulieman 1, 2 , Joachim Schulze 3 , Karl H. Mühling 1 , Lam-Son Phan Tran 4, 5
Affiliation  

To determine whether senescing leaves provoke an active nitrogen (N) remobilization that results in the reduction of nitrogenase activity, 60% of Medicago truncatula lower leaves were either darkened or individually excised for two weeks. Although a considerable amount of N was remobilized, N2 fixation activity was found to be increased to maintain the N source/sink balance, indicating an absence of the negative N‐feedback regulation of nitrogenase activity in the senescing M. truncatula.

中文翻译:

氮反馈是否参与了Medi藜苜蓿中固氮酶活性的调节?

为了确定衰老的叶片是否引起活性氮(N)迁移,从而导致固氮酶活性降低,将60%的苜蓿ca藜下部叶片变黑或单独切除两周。尽管N的相当大的量的再活化,N 2,发现固定活性增加以维持N个源/汇的平衡,表明不存在在衰老固氮酶活性的负的N-反馈调节的蒺藜苜蓿
更新日期:2019-12-19
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