Adaptive strategy of plants for survival under N, P, K limitation

Relationships between Growth, Growth Response to Nutrient Supply, and Ion Content Using a Recombinant Inbred Line Population in Arabidopsis1[W][OA]

“…Potassium deficiency leads to reduced plant growth, a loss of turgor, increased susceptibility to cold stress and pathogens, and the development of chlorosis and necrosis (Marschner, 1995;Véry and Sentenac, 2003;Ashley et al, 2006;Amtmann et al, 2008). To cope with changes in nutrient availability, plants have evolved different mechanisms of adaptation, such as changes in ion transporter expression and activity (Ashley et al, 2006;Jung et al, 2009), morphological changes, such as an increase in root growth to explore more soil volume (Marschner, 1995;Shirvani et al, 2001;Jiang et al, 2007;Jordan-Meille and Pellerin, 2008), or acidification of the surrounding soil in order to mobilize more mineral nutrients (for review, see Ryan et al, 2001). Although these adaptations are well known, the mechanisms involved in sensing and signaling low mineral nutrient status are less well understood, despite significant progress in this area being made (Doerner, 2008;Jung et al, 2009;Luan et al, 2009;Wang and Wu, 2010).…”