3 years ago

A Maize phytochrome-interacting factors Protein ZmPIF1 Enhances Drought Tolerance by Inducing Stomatal Closure and Improves Grain Yield in Oryza sativa

Xiaoyun Ren, Yong Gao, Yi Dai, Meiqin Wu, Jianmin Chen, Enxing Liang, Dongping Zhang, Mengjiao Zhang, Yan Li, Wei Jiang, Ning Xiao, Changquan Zhang
Phytochrome-interacting factors (PIFs) play major roles in regulating plant growth and development, but their roles in drought stress remain elusive. Here, we cloned and characterized a maize (Zea mays) PIF transcription factor, ZmPIF1. The expression level of ZmPIF1 was significantly induced by independent drought and abscisic acid (ABA) treatments. The ZmPIF1 transgenic rice and Arabidopsis displayed water-saving and drought-resistance, which were associated with reduced a stomatal aperture and transpiration rate. Moreover, the ZmPIF1 transgenic rice were hypersensitive to exogenous ABA, while the endogenous ABA level was not significantly changed, suggesting that ZmPIF1 was a positive regulator of the ABA signaling pathway. Digital gene expression (DGE) results further indicated that ZmPIF1 participated in ABA signaling pathway and regulated the stomatal aperture in rice. In addition, grain yield and agronomic traits analysis over four years showed that ZmPIF1 was able to increase the grain yield through an increase in tiller and panicle numbers in transgenic rice. Overall, ZmPIF1 plays an important role in the ABA-mediated regulation of stomatal closure to control water loss. ZmPIF1 can enhance water-saving and drought-resistance and improve the crop yield in rice, illustrating the capacity of ZmPIF1 for crop improvement. This article is protected by copyright. All rights reserved.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1111/pbi.12878

You might also like
Never Miss Important Research

Researcher is an app designed by academics, for academics. Create a personalised feed in two minutes.
Choose from over 15,000 academics journals covering ten research areas then let Researcher deliver you papers tailored to your interests each day.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.