Premium
Is N‐feedback involved in the regulation of nitrogenase activity in Medicago truncatula ?
Author(s) -
Sulieman Saad,
Schulze Joachim,
Mühling Karl H.,
Tran Lam-Son Phan
Publication year - 2020
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/jpln.201900432
Subject(s) - medicago truncatula , nitrogenase , nitrogen fixation , chemistry , botany , medicago , biology , nitrogen , symbiosis , biochemistry , bacteria , organic chemistry , gene , genetics
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, N 2 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 .
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom