Journal Article ASAP Arabidopsis Arabidopsis Proteins Chlamydomonas reinhardtii EJC Micronutrients PSAP RNA Splicing Factors RNA-Binding Proteins Research Support, Non-U.S. Gov't SR45 SR45 protein, Arabidopsis exon–exon junction complex ionome iron manganese natural variation nutrient deficiency nutrient homeostasis photosynthesis protein–RNA and protein–protein interaction serine/arginine-rich splicing factor splicing