Paenibacillus terrae AY-38 resistance against Botrytis cinerea in Solanum lycopersicum L. plants through defence hormones regulation

Journal of plant interactions

article

Ah-Young Kim¹  Raheem Shahzad¹  Sang-Mo Kang¹  Abdul Latif Khan²  Seok-min Lee¹  Yeon-Gyeong Park¹  Won-Hee Lee¹  In-Jung Lee¹ 

[1] School of Applied Biosciences, Kyungpook National University;University of Nizwa

关键词: PGPR;    growth promotion;    biocontrol;    jasmonic acid;    salicylic acid;   

DOI  :  10.1080/17429145.2017.1319502

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

This study aims to investigate the role of Paenibacillus terrae AY-38 to produce bioactive metabolites and to counteract pathogenic infections caused by B. cinerea . The pure culture of P. terrae (AY-38) showed the secretion of significant amount of IAA (indole-3-acetic acid) (109.57 ± 3.2 µg mL −1 ). The AY-38 strain also produced siderophore and glucanase, while in the in vitro test, it showed significant antagonism to Botrytis cinerea . In the in vivo plant experiment, the sole application of AY-38 significantly improved plant growth (plant height and leaf area), while in B. cinerea infected plants, AY-38 inoculation not only decreased the disease incidence on leaves and fruits but also reprogramed the plants for higher growth. AY-38 treatments promoted and rescued plant growth by modulating the defence responses of endogenous hormones, such as jasmonic and salicylic acids. Our findings concluded that P. terrae possesses great potential as a possible biocontrol agent against B. cinerea -induced pathogenic infections.

【 授权许可】

CC BY|CC BY-NC