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008			250219b |||||||| |||| 00| 0 eng d
022			_a0176-1617
040			_aMSU _bEnglish _cMSU _erda
050	0	0	_aQK711.2 JOU
100	1		_aVardien, Waafeka _eauthor
245	1	0	_aLegume nodules from nutrient-poor soils exhibit high plasticity of cellular phosphorus recycling and conservation during variable phosphorus supply _ccreated by Waafeka Vardien, Emma T. Steenkamp and Alexander J. Valentine
264	1		_aAmsterdam: _bElsevier GmbH, _c2016.
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
440			_aJournal of plant physiology _vVolume 191
520	3		_aNitrogen fixing legumes rely on phosphorus for nodule formation, nodule function and the energy costs of fixation. Phosphorus is however very limited in soils, especially in ancient sandstone-derived soils such as those in the Cape Floristic Region of South Africa. Plants growing in such areas have evolved the ability to tolerate phosphorus stress by eliciting an array of physiological and biochemical responses. In this study we investigated the effects of phosphorus limitation on N2 fixation and phosphorus recycling in the nodules of Virgilia divaricata (Adamson), a legume native to the Cape Floristic Region. In particular, we focused on nutrient acquisition efficiencies, phosphorus fractions and the exudation and accumulation of phosphatases. Our finding indicate that during low phosphorus supply, V. divaricata internally recycles phosphorus and has a lower uptake rate of phosphorus, as well as lower levels adenylates but greater levels of phosphohydrolase exudation suggesting it engages in recycling internal nodule phosphorus pools and making use of alternate bypass routes in order to conserve phosphorus.
650			_aAdenylates
650			_aNitrogen fixation
650			_aNodules
700	1		_aSteenkamp, Emma T. _eco-author
700	1		_aValentine, Alexander J. _eco-author
856			_uhttps://doi.org/10.1016/j.jplph.2015.12.002
942			_2lcc _cJA
999			_c168998 _d168998