@article{fdi:010061783,
  title = {{N}- and {P}-mediated seminal root elongation response in rice seedlings},
  author = {{O}gawa, {S}. and {S}elvaraj, {M}. {G}. and {F}ernando, {A}. {J}. and {L}orieux, {M}athias and {I}shitani, {M}. and {M}c{C}ouch, {S}. and {A}rbelaez, {J}. {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n rice, seminal root elongation plays an important role in acquisition of nutrients such as {N} and {P}, but the extent to which different {N} forms and {P} concentrations affect root growth is poorly understood. {T}his study aimed to examine {N}- and {P}-mediated seminal root elongation response and to identify putative {QTL}s associated with seminal root elongation. {S}eminal root elongation was evaluated in 15 diverse wild and cultivated accessions of rice, along with 48 chromosome segment substitution lines ({CSSL}s) derived from a cross between the rice variety '{C}uringa' and {O}ryza rufipogon ({IRGC} 105491). {R}oot elongation in response to different forms of {N} ({NH}4 (+), {NO}3 (-) and {NH}4{NO}3) and concentrations of {P} was evaluated under hydroponic conditions, and associated putative {QTL} regions were identified. {T}he {CSSL} parents had contrasting root responses to {N} and {P}. {R}oot elongation in {O}. rufipogon was insensitive to {N} source and concentration, whereas {C}uringa was responsive. {I}n contrast to {N}, seminal root elongation and {P} concentration was positively correlated. {T}hree putative {QTL}s for seminal root elongation in response to {N} were detected on chromosome 1, and one {QTL} on chromosome 3 was associated with low {P} concentration. {G}enetic variation in seminal root elongation and plasticity of nutrient response may be appropriate targets for marker-assisted selection to improve rice nutrient acquisition efficiency.},
  keywords = {{C}hromosome segment substitution lines ; {NH}4+ response ; {N}acquisition ; {S}eminal root elongation},
  booktitle = {},
  journal = {{P}lant and {S}oil},
  volume = {375},
  numero = {1-2},
  pages = {303--315},
  ISSN = {0032-079{X}},
  year = {2014},
  DOI = {10.1007/s11104-013-1955-y},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061783},
}