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Overexpression of a maize plasma membrane intrinsic protein ZmPIP1;1 confers drought and salt tolerance in Arabidopsis

by Lian Zhou, Jing Zhou, Yuhan Xiong, Chaoxian Liu, Jiuguang Wang, Guoqiang Wang, Yilin Cai

Drought and salt stress are major abiotic stress that inhibit plants growth and development, here we report a plasma membrane intrinsic protein ZmPIP1;1 from maize and identified its function in drought and salt tolerance in Arabidopsis. ZmPIP1;1 was localized to the plasma membrane and endoplasmic reticulum in maize protoplasts. Treatment with PEG or NaCl resulted in induced expression of ZmPIP1;1 in root and leaves. Constitutive overexpression of ZmPIP1;1 in transgenic Arabidopsis plants resulted in enhanced drought and salt stress tolerance compared to wild type. A number of stress responsive genes involved in cellular osmoprotection in ZmPIP1;1 overexpression plants were up-regulated under drought or salt condition. ZmPIP1;1 overexpression plants showed higher activities of reactive oxygen species (ROS) scavenging enzymes such as catalase and superoxide dismutase, lower contents of stress-induced ROS such as superoxide, hydrogen peroxide and malondialdehyde, and higher levels of proline under drought and salt stress than did wild type. ZmPIP1;1 may play a role in drought and salt stress tolerance by inducing of stress responsive genes and increasing of ROS scavenging enzymes activities, and could provide a valuable gene for further plant breeding.

Authors:   Lian Zhou; Jing Zhou; Yuhan Xiong; Chaoxian Liu; Jiuguang Wang; Guoqiang Wang; Yilin Cai
Journal:   PLoS ONE
Volume:   13
edition:   6
Year:   2018
Pages:   e0198639
DOI:   10.1371/journal.pone.0198639
Publication date:   01-Jun-2018
Facts, background information, dossiers
  • Expression
  • endoplasmic reticulum
  • CAI
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