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

Andrew J. Cal | Zendy; Dongcheng Liu | Zendy; Ramil Mauleon | Zendy; YueIe Hsing | Zendy; Rachid Serraj | Zendy

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

Author(s) -

Andrew J. Cal,

Dongcheng Liu,

Ramil Mauleon,

YueIe Hsing,

Rachid Serraj

Publication year - 2013

Publication title -

plos one

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.99

H-Index - 332

ISSN - 1932-6203

DOI - 10.1371/journal.pone.0054537

Subject(s) - cultivar , biology , elongation , gene , transcriptome , drought stress , botany , extant taxon , gene expression , agronomy , horticulture , genetics , evolutionary biology , materials science , metallurgy , ultimate tensile strength

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.

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