Importance of Endophytic Strains Pantoea agglomerans in the Biological Control of Rhizoctonia solani

Author:

Nabrdalik Małgorzata1,Moliszewska Ewa1,Wierzba Sławomir1

Affiliation:

1. Chair of Biotechnology and Molecular Biology , University of Opole , ul. kard. B. Kominka 6, 45-032 Opole , Poland , phone +48 77 401 60 56

Abstract

Abstract Antagonistic activity of microorganisms against phytopathogens is mainly the results of plants’ health improvement due to the inhibition of pathogens growth and the induction of plants resistance against diseases. The aim of the research was to determine antagonistic properties of Pantoea agglomerans against Rhizoctonia solani. The properties of two strains P. agglomerans BC17 and BC45 were assessed according to the following criteria: mycelial growth of R. solani in the presence of bacterial metabolites, an impact of P. agglomerans on the growth of sugar beet in the pots containing soil with and addition of R. solani and without it, the ability to produce indole-3-acetic acid (IAA). It has been recorded that antagonistic properties of tested strains are different. In the presence of metabolites of BC17 strains, the mycelial growth of R. solani was inhibited by 78 % and for the strain BC45 the value amounted 46 %. In the pot bioassay the number of infested plants growing in the soil inoculated with P. agglomerans and the pathogen was lower when compared with the pots containing R solani. A higher reduction of infested plants, amounting 23 %, was obtained for the strain BC17. Both strains had the ability to produce IAA - a plant hormone of the auxin class, in the presence of tryptophan and its absence in the medium. The highest concentration of IAA was recorded after 7 days of culturing in the supernatant obtained from the media containing 2000 μg/cm3 of tryptophan. For the strain BC17 the concentration of IAA marked in the post - culturing liquid amounted 71.57 μg/cm3, and for the BC45 strain it amounted over 80 μg/cm3. Obtained results prove that P. agglomerans may be used in the biological protection against phytopatogenic strains of R. solani.

Publisher

Walter de Gruyter GmbH

Subject

Environmental Chemistry,Environmental Engineering

Reference41 articles.

1. [1] Gomez TH, Meisch RA. Pharmacol, Biochem Behavior. 2004;79:261-267. DOI: 10.1016/j.pbb.2004.07.005.10.1016/j.pbb.2004.07.005

2. [2] Wightwick A, Walters R, Allinson G, Reichman S, Menzies N. Environmental Risks of Fungicides Used in Horticultural Production Systems. In: Carisse O, editor. Fungicides. Rijeka: InTech; 2010. DOI: 10.5772/13032.10.5772/13032

3. [3] Broniarek-Niemiec A. Prog Plant Prot. 2016;56(1):52-61. DOI: 10.14199/ppp-2016-009.10.14199/ppp-2016-009

4. [4] Egüen B., Melgarejo P, De Cal A. Eur J Plant Pathol. 2016;145:815-827. DOI:10.1007/s10658-016-0871-4.10.1007/s10658-016-0871-4

5. [5] Brent KJ, Hollomon DW. Fungicide Resistance in Crop Pathogens: How Can It Be Managed? FRAC Monograph 1 (2nd ed.). Brussels: Fungicide Resistance Action Committee; 2007. http://www.frac.info/docs/default-source/publications/monographs/monograph-1.pdf

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3