Ammonium (NH4+) toxicity is an issue of global ecological and economic importance. In this review, we discuss the major themes of NH4+ toxicity, including the occurrence of NH4+ in the biosphere, response differences to NH4+ nutrition among wild and domesticated species, symptoms and proposed me...
NH4+ toxicity in higher plants: a critical review Ammonium (NH4+) toxicity is an issue of global ecological and economic importance. In this review, we discuss the major themes of NH4+ toxicity, including the occurrence of NH4+ in the biosphere, response differences to NH4+ nutrition am......
NH4+ toxicity in higher plants: a critical review. J Plant Physiol 159, 567–584. Britto DT, Kronzucker HJ (2005). Nitrogen acquisition, PEP carboxylase, and cellular pH homeostasis: new views on old paradigms. Plant Cell Environ 28, 1396–1409. Damerval C, De Vienne D, Zivy M, Thi...
NH4+ toxicity in higher plants: a critical review. J Plant Physiol. 2002;159:567–84. https://doi.org/10.1078/0176-1617-0774 Article CAS Google Scholar Ashraf M. Interactive effect of salt (NaCl) and nitrogen form on growth, water relations and photosynthetic capacity of sunflower (...
Oligotrophic source plants in low nutrients had the highest chlorophyllalevels at ≤10mg/L, which dropped markedly afterwards. Soluble carbohydrates and starch decreased at ≥50mg/L and ≥5mg/L, respectively. Individuals growing in eutrophic conditions could be prone to higher damage in the field ...
Plants can suffer ammonium (NH4 +) toxicity, particularly when NH4 + is supplied as the sole nitrogen source. However, our knowledge about the underlying mechanisms of NH4 + toxicity is still largely unknown. Lemna minor, a model duckweed species, can gr
The higher pH also leads to a higher ionised ammonia, thereby increasing toxicity [10]. The relative concentration of each depends on the pH and temperature, with higher pH values and temperatures favouring the formation of a molecular ammonia that is toxic. The higher pH also leads to a ...
NH4+ cycling: a cellular hypothesis to explain ammonium toxicity in plants. P. Natl. Acad. 33. Loqué, D. & von Wirén, N. Regulatory levels for the transport of ammonium in plant roots. J. Exp. Bot. 55, 1293–1305 (2004). 34. Rana, N. K. et al. A CsGS is regulated at ...
Root growth in higher plants is sensitive to excess ammonium (NH4+). Our study shows that contact of NH4+ with the primary root tip is both necessary and sufficient to the development of arrested root growth under NH4+ nutrition in Arabidopsis. We show that cell elongation and not cell divis...
betweenUNO3andUNH4(P < 0.01) indicated a synergistic effect between NH4+and NO3−uptake. The longer NH4+residence time could explain the higher NH4+and total N uptake rates in acidic soil than alkaline soil. With maize planted, the rate of autotrophic nitrification (ONH4) reduced ...