BcOPR3 Mediates Defense Responses to Biotrophic and Necrotrophic Pathogens in Arabidopsis and Non-heading Chinese Cabbage

被引：1

作者：

Wang, Yuan ^{[1
]}

Yuan, Shuilin ^{[1
]}

Shao, Cen ^{[1
]}

Zhu, Weitong ^{[1
]}

Xiao, Dong ^{[1
]}

Zhang, Changwei ^{[1
]}

Hou, Xilin ^{[1
]}

Li, Ying ^{[1
]}

机构：

[1] Nanjing Agr Univ, Coll Hort, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China

来源：

PHYTOPATHOLOGY | 2022年 / 112卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Arabidopsis; BcOPR3; biotrophic and necrotrophic pathogens; non-heading Chinese cabbage; plant defense; ACID-DEPENDENT DEFENSES; SALICYLIC-ACID; JASMONIC ACID; TRANSCRIPTION FACTOR; DISEASE RESISTANCE; PLANT DEFENSE; PHYTOTOXIN CORONATINE; METHYL JASMONATE; GENE-EXPRESSION; FLOWERING TIME;

D O I：

10.1094/PHYTO-02-22-0049-R

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

In plants, the salicylic acid (SA) and jasmonic acid (JA) signaling pathways usually mediate the defense response to biotrophic and necrotrophic pathogens, respectively. Our previous work showed that after non-heading Chinese cabbage (NHCC) was infected with the biotrophic pathogen Hyaloperonospora parasitica, expression of the JA biosynthetic gene BcOPR3 is induced; however, its molecular mechanism remains unclear. Here, we overexpressed BcOPR3 in Arabidopsis and silenced BcOPR3 in NHCC001 plants to study the defensive role of BcOPR3 in plants against pathogen invasion. The results showed that overexpression of BcOPR3 increased the susceptibility of Arabidopsis to Pseudomonas syringae pv. tomato DC3000 (Pst DC3000) but enhanced its resistance to Botrytis cinerea. BcOPR3-silenced NHCC001 plants with a 50% reduction in BcOPR3 expression increased their resistance to downy mildew by reducing the hyphal density and spores of H. parasitica. In addition, BcOPR3-partly silenced NHCC001 plants were also resistant to B. cinerea, which could be the result of a synergistic effect of JA and SA. These findings indicate a complicated role of BcOPR3 in the mediating defense responses to biotrophic and necrotrophic pathogens.

引用

页码：2523 / 2537

页数：15

共 92 条

[21] Plant pathogens and integrated defence responses to infection [J].