The arbuscular mycorrhizal status has an impact on the transcriptome profile and amino acid composition of tomato fruit

BMC Plant Biology

Research Article

Inès Zouari¹  Alessandra Salvioli¹  Paola Bonfante²  Michel Chalot³ 

[1] Dipartimento di Biologia Vegetale, Università degli Studi di Torino and IPP-CNR, viale Mattioli 25, 10125, Torino, Italy;Dipartimento di Biologia Vegetale, Università degli Studi di Torino and IPP-CNR, viale Mattioli 25, 10125, Torino, Italy;IPP-CNR, viale Mattioli 25, 10125, Torino, Italy;UMR INRA/UHP 1136 Interactions Arbres/Micro-organismes, BP 239, Université Henri Poincaré - Nancy I, Faculté des Sciences et Techniques, 54506, Vandoeuvre-les, Nancy Cedex, France;

关键词: Tomato Plant;    Glutamine Synthetase;    Tomato Fruit;    Amino Acid Content;    Mycorrhizal Plant;   

DOI  :  10.1186/1471-2229-12-44

 received in 2011-11-07, accepted in 2012-03-27,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundArbuscular mycorrhizal (AM) symbiosis is the most widespread association between plant roots and fungi in natural and agricultural ecosystems. This work investigated the influence of mycorrhization on the economically relevant part of the tomato plant, by analyzing its impact on the physiology of the fruit. To this aim, a combination of phenological observations, transcriptomics (Microarrays and qRT-PCR) and biochemical analyses was used to unravel the changes that occur on fruits from Micro-Tom tomato plants colonized by the AM fungus Glomus mosseae.ResultsMycorrhization accelerated the flowering and fruit development and increased the fruit yield. Eleven transcripts were differentially regulated in the fruit upon mycorrhization, and the mycorrhiza-responsive genes resulted to be involved in nitrogen and carbohydrate metabolism as well as in regulation and signal transduction. Mycorrhization has increased the amino acid abundance in the fruit from mycorrhizal plants, with glutamine and asparagine being the most responsive amino acids.ConclusionsThe obtained results offer novel data on the systemic changes that are induced by the establishment of AM symbiosis in the plant, and confirm the work hypothesis that AM fungi may extend their influence from the root to the fruit.

【 授权许可】

Unknown   
© Salvioli et al; licensee BioMed Central Ltd. 2012. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.