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Trehalose phosphate synthase 5-dependent trehalose metabolism modulates basal defense responses in Arabidopsis thaliana
Wang, Xuelan1; Du, Yan; Yu, Diqiu
2019
Source PublicationJOURNAL OF INTEGRATIVE PLANT BIOLOGY
ISSN1672-9072
Volume61Issue:4Pages:509-527
Abstract

Despite the recent discovery that trehalose synthesis is important for plant development and abiotic stress tolerance, the effects of trehalose on biotic stress responses remain relatively unknown. In this study, we demonstrate that TREHALOSE PHOSPHATE SYNTHASE 5 (TPS5)-dependent trehalose metabolism regulates Arabidopsis thaliana defenses against pathogens (necrotrophic Botrytis cinerea and biotrophic Pseudomonas syringae). Pathogen infection increased trehalose levels and upregulated TPS5 expression. Application of exogenous trehalose significantly improved plant defenses against B. cinerea, but increased the susceptibility of plants to P. syringae. We demonstrate that elevated trehalose biosynthesis, in transgenic plants over-expressing TPS5, also increased the susceptibility to P. syringae, but decreased the disease symptoms caused by B. cinerea. The knockout of TPS5 prevented the accumulation of trehalose and enhanced defense responses against P. syringae. Additionally, we observed that a TPS5-interacting protein (multiprotein bridging factor 1c) was required for induced expression of TPS5 during pathogen infections. Furthermore, we show that trehalose promotes P. syringae growth and disease development, via a mechanism involving suppression of the plant defense gene, Pathogenesis-Related Protein 1. These findings provide insight into the function of TPS5-dependent trehalose metabolism in plant basal defense responses.

KeywordTranscription Factor Jasmonic Acid Nitrogen-metabolism Stress Tolerance Salicylic-acid Abiotic Stress Abscisic-acid Expression Trehalose-6-phosphate Resistance
Subject AreaBiochemistry & Molecular Biology ; Plant Sciences
DOI10.1111/jipb.12704
Indexed BySCI
Language英语
WOS IDWOS:000466373800011
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11277
Collection植物分子生物学研究组
Affiliation1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Plant Resources & Sustainable Use, Kunming 650223, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xuelan,Du, Yan,Yu, Diqiu. Trehalose phosphate synthase 5-dependent trehalose metabolism modulates basal defense responses in Arabidopsis thaliana[J]. JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2019,61(4):509-527.
APA Wang, Xuelan,Du, Yan,&Yu, Diqiu.(2019).Trehalose phosphate synthase 5-dependent trehalose metabolism modulates basal defense responses in Arabidopsis thaliana.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,61(4),509-527.
MLA Wang, Xuelan,et al."Trehalose phosphate synthase 5-dependent trehalose metabolism modulates basal defense responses in Arabidopsis thaliana".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 61.4(2019):509-527.
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