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Plant Cell Reports

, Volume 37, Issue 7, pp 993–1002 | Cite as

OsEXPA10 mediates the balance between growth and resistance to biotic stress in rice

  • Jiang Tan
  • Meiling Wang
  • Zhenying Shi
  • Xuexia Miao
Original Article

Abstract

Key message

OsEXPA10 gene coordinates the balance between rice development and biotic resistance.

Abstract

Expansins are proteins that can loosen the cell wall. Previous studies have indicated that expansin-encoding genes were involved in defense against abiotic stress, but little is known about the involvement of expansins in biotic stress. Brown planthopper (BPH) is one of the worst insect pests of rice in the Asia-Pacific planting area, and many efforts have been made to identify and clone BPH-resistance genes for use in breeding resistant cultivars. At the same time, rice blast caused by Magnaporthe grisea is one of the three major diseases that severely affect rice production worldwide. Here, we demonstrated that one rice expansin-encoding gene, OsEXPA10, functions in both rice growth and biotic resistance. Over expression of OsEXPA10 improved rice growth but also increased susceptibility to BPH infestation and blast attack, while knock-down OsEXPA10 gene expression resulted in reduced plant height and grain size, but also increased resistance to BPH and the blast pathogen. These results imply that OsEXPA10 mediates the balance between rice development and biotic resistance.

Keywords

Expansin Brown planthopper Biotic resistance Oryza sativa 

Abbreviations

BPH

Brown planthopper

OE

Over expression

RNAi

RNA interference

SA

Salicylic acid

JA

Jasmonic acid

MeJA

Methyl jasmonic acid

Notes

Acknowledgements

This work was supported by the National Key R&D Program of China (2016YFD0100603), the National Transgenic Great Subject from the Ministry of Agriculture of China (2016ZX08009-003-001) and the National Natural Science Foundation of China (31371949). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

299_2018_2284_MOESM1_ESM.docx (19 kb)
Supplementary material 1 (DOCX 18 KB)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
  2. 2.University of the Chinese Academy of SciencesBeijingChina

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