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Transcriptome profile for spikelets of rice plants subjected to severe reproductive stage drought stress

ABSTRACT: To understand how the qDTY12.1 interacts with other genes within the genome to give better yield under drought; the spikelets transcriptome of DTY12.1 parents (Vandana , Way Rarem) and DTY12.1 NIL (481-B) were compared under control and drought conditions.

ORGANISM(S): Oryza sativa

PROVIDER: GSE78777 | GEO | 2016/03/01

SECONDARY ACCESSION(S): PRJNA313510

REPOSITORIES: GEO

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Transcriptome profile for spikelets of rice plants subjected to severe reproductive stage drought stress

Project description:To understand how the qDTY12.1 interacts with other genes within the genome to give better yield under drought; the spikelets transcriptome of DTY12.1 parents (Vandana , Way Rarem) and DTY12.1 NIL (481-B) were compared under control and drought conditions. Drought induced gene expression was studied in the spikelets of the rice plants subjected to severe reproductive stage drought. Seeds of Vandana, Way Rarem, and 481-B were sown into rotovated soil at a rate of 2.0 g m-1 into plots of 3 rows X 3 m. The three genotypes were sown in three replications in a randomized complete block design.

2016-03-01 | E-GEOD-78777 | biostudies-arrayexpress

Transcriptome profile for leaves of rice plants subjected to severe reproductive stage drought stress

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Transcriptome profile for leaves of rice plants subjected to severe reproductive stage drought stress

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Transcriptome profile for roots of the rice plants which showed favorable morpho-physiological adaptation when subjected to severe drought stress

Project description:To understand how OsNAM12.1 over-expression influences the target genes within qDTY12.1 and across the genome to affect root growth, the root transcriptome of Vandana, 481-B, IR64-Tr-E2, and IR64-WT were compared under control and drought conditions. Drought induced gene expression was studied in the roots of the rice plants subjected to severe drought. Seeds of Vandana, 481-B, IR64 and the OsNAM12.1 overexpression line (OsNAM Event 2) were sown in 5 biological replicates in a randomized complete block design for both the well watered and drought stress treatments.

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Transcriptome profile for roots of the rice plants which showed favorable morpho-physiological adaptation when subjected to severe drought stress

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Comparative proteomics analysis of superior and inferior spikelets in hybrid rice during grain filling and response of inferior spikelets to drought stress using isobaric tags for relative and absolute quantification

Project description:The biological functions of differently expressed proteins between superior and inferior spikelet grains were investigated based on the isobaric tags for relative and absolute quantification to further clarify the mechanism of rice grain filling at the proteomic level, as well as the response of inferior spikelets to drought dress (-20 kPa or -40 kPa). Compared with superior spikelets, inferior ones had lower sink strength due to the lower sink activities (lower expressions of ADP-glucose pyrophosphorylase, granule-bound starch synthase, starch branching enzyme and pullulanase) and smaller sink sizes (lower abundances of structural proteins). The slower and later grain filling resulted from the weaker decomposition and conversion of photoassimilate and the slower cell division. Moderate drought stress (-20 kPa) promoted the grain filling of inferior spikelets through regulating the proteins associated with photoassimilate supply and conversion. These proteins may be important targets for rice breeding programs that raise the rice yield under drought condition. The findings offer new insights into rice grain-filling and provide theoretical evidences for better quality control and scientific improvement of super rice in practice.

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RNA-seq analysis of developing rice seeds under combined heat and drought stress

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Changes in rice NILs root expression profile in response to drought stress at reproductive stage

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Changes in rice NILs panicle expression profile in response to drought stress at reproductive stage

Project description:The current knowledge of drought stress transcriptomes in rice are mostly relying on comparative studies of diverse genetic background under drought. A more reliable approach is to use near-isogenic lines (NILs) with a common genetic background (Donar parent: Aday Sel, Recurrent parent: IR64), but contrasting levels of resistance to drought stress under initial exposure to water deficit. Here, we examined two pairs of NILs in IR64 background with contrasting drought tolerance. We obtained gene expression profile in panicles of rice NILs under different levels of drought stress help to identify genes and mechanisms involved in drought stress.

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Changes in rice NILs shoot expression profile in response to drought stress at reproductive stage

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