title: Global transcriptome profile of rice root in response to essential macronutrient deficiency.
abstract: Deficiency of the three essential macronutrients, nitrogen, phosphorus and potassium, leads to large reduction in crop growth and yield. To characterize the molecular genetic basis of adaptation to macronutrient deprivation, we performed microarray analysis of rice root at 6 and 24 h after nitrogen, phosphorus and potassium deficiency treatments. The transcriptome response to nitrogen depletion occurred more rapidly than corresponding responses to phosphorus and potassium deprivation. We identified several genes important for response and adaptation to each nutrient deficiency. Furthermore, we found that signaling via reactive oxygen species is a common feature in response to macronutrient deficiency and signaling via jasmonic acid is associated with potassium depletion response. These results will facilitate deeper understanding of nutrient utilization of plants.
authors.affiliation: Genome Resource Unit; National Institute of Agrobiological Sciences; Tsukuba, Ibaraki, Japan.
authors.forename: Hinako
authors.initials: H
authors.lastname: Takehisa
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Sato
authors.forename: Baltazar A
authors.initials: BA
authors.lastname: Antonio
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Nagamura
mesh_terms: D020869:Gene Expression Profiling; D009584:Nitrogen / Q000378:metabolism*; D020411:Oligonucleotide Array Sequence Analysis; D012275:Oryza / Q000378:metabolism*; D010758:Phosphorus / Q000378:metabolism*; D018517:Plant Roots / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism*; D059467:Transcriptome
chemical_list: D010758:Phosphorus; D009584:Nitrogen; D011188:Potassium
keywords: macronutrient deficiency; microarray; rice; root; transcriptome