Cargando…

Transcriptome Profiling of Leaf Elongation Zone under Drought in Contrasting Rice Cultivars

Inhibition of leaf elongation and expansion is one of the earliest responses of rice to water deficit. Despite this sensitivity, a great deal of genetic variation exists in the extant of leaf elongation rate (LER) reduction in response to declining soil moisture. We analyzed global gene expression i...

Descripción completa

Detalles Bibliográficos
Autores principales: Cal, Andrew J., Liu, Dongcheng, Mauleon, Ramil, Hsing, Yue-Ie Caroline, Serraj, Rachid
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3553057/
https://www.ncbi.nlm.nih.gov/pubmed/23372737
http://dx.doi.org/10.1371/journal.pone.0054537
Descripción
Sumario:Inhibition of leaf elongation and expansion is one of the earliest responses of rice to water deficit. Despite this sensitivity, a great deal of genetic variation exists in the extant of leaf elongation rate (LER) reduction in response to declining soil moisture. We analyzed global gene expression in the leaf elongation zone under drought in two rice cultivars with disparate LER sensitivities to water stress. We found little overlap in gene regulation between the two varieties under moderate drought; however, the transcriptional response to severe drought was more conserved. In response to moderate drought, we found several genes related to secondary cell wall deposition that were down regulated in Moroberekan, an LER tolerant variety, but up-regulated in LER sensitive variety IR64.