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The plasma membrane NADPH oxidase OsRbohA plays a crucial role in developmental regulation and drought-stress response in rice


ABSTRACT: Plasma membrane NADPH oxidases (NOXs) are major producers of reactive oxygen species (ROS) in plant cells under normal growth and stress conditions. Rice NOXs have multiple homologs but their functional mechanisms are largely unknown. We used microarrays to detail the global gene expression profiles in rice wild-type (WT, Dongjin) and a mutant osnox2 which loss the functions of OsNOX2 protein under drought and identified distinct classes of genes between the two type rice plants under both normal growth and drought stressed conditions. The youngest fully expanded leaves from 2.5-month-old WT and osnox2 plants (three replicates each), grown under normal growth (soil moisture, 47.3%) and drought conditions (soil moisture, 8.5%), were used for RNA extraction and hybridization on Affymetrix microarrays. Control: normal growth condition; Drought: drought stress condition.

ORGANISM(S): Oryza sativa Japonica Group

SUBMITTER: Kunming Chen 

PROVIDER: E-GEOD-54466 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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The plasma membrane NADPH oxidase OsRbohA plays a crucial role in developmental regulation and drought-stress response in rice.

Wang Xiang X   Zhang Mao-Mao MM   Wang Ya-Jing YJ   Gao Yin-Tao YT   Li Ri R   Wang Gang-Feng GF   Li Wen-Qiang WQ   Liu Wen-Ting WT   Chen Kun-Ming KM  

Physiologia plantarum 20151031 4


Plasma membrane NADPH oxidases are major producers of reactive oxygen species (ROS) in plant cells under normal growth and stress conditions. In the present study the total activity of rice NADPH oxidases and the transcription of OsRbohA, which encodes an Oryza sativa plasma membrane NADPH oxidase, were stimulated by drought. OsRbohA was expressed in all tissues examined throughout development. Its mRNA was upregulated by a number of factors, including heat, drought, salt, oxidative stress and m  ...[more]

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