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Open AccessArticle

Cladosporium sp. Isolate as Fungal Plant Growth Promoting Agent

Biotechnology Department, National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, Spl. Independentei 202, 060021 Bucharest, Romania
Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Mărăşti Boulevard, 011464 Bucharest, Romania
Authors to whom correspondence should be addressed.
Academic Editor: Yoshiharu Fujii
Agronomy 2021, 11(2), 392;
Received: 21 January 2021 / Revised: 17 February 2021 / Accepted: 18 February 2021 / Published: 23 February 2021
(This article belongs to the Special Issue Effects of Biostimulants and Bioeffectors on Plant Growth)
Cladosporium species are active in protecting plants against different biotic and abiotic stresses. Since these species produced a wide range of secondary metabolites responsible for the adaptation to new habitats, plant health and performance, they are of great interest, especially for biostimulants in agriculture. Cladosporium sp. produces protein hydrolysates (PHs), a class of biostimulants, by cultivation on medium with keratin wastes (feathers) as carbon and energy sources. The aim of this study was to select a Cladosporium isolate with potential to be used as plant growth promoting agent. The characteristics of Cladosporium isolates as plants biostimulants were evaluated through several tests, such as: antagonism versus plants pathogens, effect on plant growth of secreted volatiles produced by isolates, secretion of hydrolytic enzymes, production of 3-indole acetic acid, zinc and phosphorous solubilization, capacity to promote tomato seedlings growth (pot experiments). Cladosporium isolate T2 presented positive results to all tests. Encouraging results were obtained treating tomato seedlings with PHs from isolate Cladosporium T2 cultured on medium supplemented with 1% (w/w) chicken feathers, for which growth parameters, such as stem weight, stem height, and root weight were significantly higher by 65%, 32%, and 55%, respectively, compared to those treated with water. View Full-Text
Keywords: biostimulants; Cladosporium; feathers; protein hydrolysates; plant growth promoting agent biostimulants; Cladosporium; feathers; protein hydrolysates; plant growth promoting agent
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MDPI and ACS Style

Răut, I.; Călin, M.; Capră, L.; Gurban, A.-M.; Doni, M.; Radu, N.; Jecu, L. Cladosporium sp. Isolate as Fungal Plant Growth Promoting Agent. Agronomy 2021, 11, 392.

AMA Style

Răut I, Călin M, Capră L, Gurban A-M, Doni M, Radu N, Jecu L. Cladosporium sp. Isolate as Fungal Plant Growth Promoting Agent. Agronomy. 2021; 11(2):392.

Chicago/Turabian Style

Răut, Iuliana; Călin, Mariana; Capră, Luiza; Gurban, Ana-Maria; Doni, Mihaela; Radu, Nicoleta; Jecu, Luiza. 2021. "Cladosporium sp. Isolate as Fungal Plant Growth Promoting Agent" Agronomy 11, no. 2: 392.

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