Carvajal, M.; Albornoz, F.; Catrileo, D.; Chorbadjian, R.; Gebauer, M.; Godoy, L. Solicoccozyma aeria YCPUC79 Promotes Tomato Seedling Root Growth by Volatile Organic Compounds Emission. Preprints2024, 2024012151. https://doi.org/10.20944/preprints202401.2151.v1
APA Style
Carvajal, M., Albornoz, F., Catrileo, D., Chorbadjian, R., Gebauer, M., & Godoy, L. (2024). <em>Solicoccozyma aeria</em> YCPUC79 Promotes Tomato Seedling Root Growth by Volatile Organic Compounds Emission. Preprints. https://doi.org/10.20944/preprints202401.2151.v1
Chicago/Turabian Style
Carvajal, M., Marlene Gebauer and Liliana Godoy. 2024 "<em>Solicoccozyma aeria</em> YCPUC79 Promotes Tomato Seedling Root Growth by Volatile Organic Compounds Emission" Preprints. https://doi.org/10.20944/preprints202401.2151.v1
Abstract
Beneficial microorganisms promote plant growth through different mechanisms, such as the production of plant hormones, the synthesis of 1-aminocyclopropane-1-carboxylic acid deaminase (ACCD), or, through volatile organic compounds (VOCs) emission. There are numerous studies describing a biostimulant action mediated by VOCs released by bacteria and filamentous fungi. However, in soil yeasts, research in this regard is still incipient. In a previous study, we present the stimulatory action of Solicoccozyma aeria YCPUC79 on tomato seedling growth by inoculating the rootzone with this yeast. The positive effect of S. aeria was related to the synthesis of indole acetic acid (IAA) and the presence of ACCD activity by the yeast. In the present study, we evaluated whether S. aeria is capable of emitting VOCs with biostimulant activity. For this, an experiment was conducted to test the release of VOCs in four treatments: S. aeria (Sa), tomato seedlings (T), tomato seedlings sharing the ambient with S. aeria but with no physical contact (TSa) plus a control with no yeast nor tomato seedlings (C). Tomato seedlings exposed to S. aeria in-oculum (TSa) presented 1.2-fold shorter main roots but increased the number of lateral roots by 80% compared to T. Regarding the analysis of VOCs, 59 compounds were identified excluding those found in the control treatment. These compounds represent twelve chemical families, in-cluding alcohols, esters, furans, hydrocarbons, ketones and terpenes. The treatment TSa shows an increased abundance of ketones, alcohols, esters, sulfur-containing compounds, and pyrazines in comparison to T treatment. Three compounds (butyl hept-4-yl ester-phthalic acid, (E)1.3-pentadiene and 1-propenylthiol) were exclusively present in the TSa treatment. This study provides, for the first time, information on a soil yeast capable of promoting the production of lateral roots in tomato through VOCs.
Keywords
yeast; VOCs; biostimulants; root; tomato seedling
Subject
Biology and Life Sciences, Agricultural Science and Agronomy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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