Evaluation potential of PGPR to protect tomato against Fusarium wilt and promote plant growth

PeerJ

article

Rizwana begum Syed Nabi¹  Raheem Shahzad⁴  Rupesh Tayade⁵  Muhammad Shahid¹  Adil Hussain⁶  Muhammad Waqas Ali⁷  Byung-Wook Yun¹ 

[1] Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National University;Department of Southern Area Crop Science, National Institute of Crop Science;Development Administration;Department of Horticulture, The University of Haripur;Laboratory of Plant Breeding, School of Applied Biosciences, Kyungpook National University;Department of Agriculture,, Abdul Wali Khan University;School of Biosciences, University of Birmingham

关键词: PGPR;    Bacillus aryabhattai;    SRB02;    Fusarium oxysporum;    Tomato wilt;    Tomato;    Plant growth;   

DOI  :  10.7717/peerj.11194

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Soilborne fungal diseases are most common among vegetable crops and have major implications for crop yield and productivity. Eco-friendly sustainable agriculture practices that can overcome biotic and abiotic stresses are of prime importance. In this study, we evaluated the ability of plant growth-promoting rhizobacterium (PGPR) Bacillus aryabhattai strain SRB02 to control the effects of tomato wilt disease caused by Fusarium oxysporum f. sp. lycopersici (strain KACC40032) and promote plant growth. In vitro bioassays showed significant inhibition of fungal growth by SRB02. Inoculation of susceptible and tolerant tomato cultivars in the presence of SRB02 showed significant protection of the cultivar that was susceptible to infection and promotion of plant growth and biomass production in both of the cultivars. Further analysis of SRB02-treated plants revealed a significantly higher production of amino acids following infection by F. oxysporum. Analysis of plant defense hormones after inoculation by the pathogen revealed a significantly higher accumulation of salicylic acid (SA), with a concomitant reduction in jasmonic acid (JA). These results indicate that B. aryabhattai strain SRB02 reduces the effects of Fusarium wilt disease in tomato by modulating endogenous phytohormones and amino acid levels.

【 授权许可】

CC BY