RRC ID 30999
Author Striker GG, Casas C, Manzur ME, Ploschuk RA, Casal JJ.
Title Phenomic networks reveal largely independent root and shoot adjustment in waterlogged plants of Lotus japonicus.
Journal Plant Cell Environ.
Abstract Waterlogging imposes severe stress to the plant, and the interplay between root and aerial organs in the adjustment to this stress is poorly understood. A set of recombinant inbred lines (RILs) of Lotus japonicus (Gifu B-129 × Miyakojima MG-20) was subjected to control and waterlogging conditions for 21 d, and 12 traits related to leaf physiological functioning, root aerenchyma formation, shoot and root morphology, and dry mass accumulation were assessed to generate phenomic networks. The phenomic network became more complex under waterlogging as a result of the incorporation of root aerenchyma and dark-adapted Fv/Fm. Significant waterlogging-induced variation was found for stomatal conductance, dark-adapted Fv/Fm and aerenchyma. The RILs with stronger induction of aerenchyma in response to waterlogging tended to show reduced negative impact of this stress on root growth but suffered average impact on shoot growth. The RILs that retained higher stomatal conductance under waterlogging tended to retain higher dark-adapted Fv/Fm and shoot growth under waterlogging conditions but showed average impact on root traits. We propose a model where, although the stress experienced by the roots during waterlogging is transmitted to the shoot, shoots and roots deal with waterlogging in a less interdependent manner than often assumed.
Volume 37(10)
Pages 2278-93
Published 2014-10
DOI 10.1111/pce.12268
PMID 24393069
MeSH Adaptation, Physiological* Biomass Chlorophyll / metabolism Genetic Linkage Inbreeding Loteae / genetics Loteae / growth & development Loteae / physiology* Oxygen / metabolism* Phenotype Plant Roots / genetics Plant Roots / growth & development Plant Roots / physiology Plant Shoots / genetics Plant Shoots / growth & development Plant Shoots / physiology Plant Stomata Quantitative Trait Loci / genetics* Soil Stress, Physiological* Water / physiology*
IF 5.415
Times Cited 8
Lotus / Glycine Gifu B-129×Miyakojima MG-20 RILs