BIOCONTROL OF POSTHARVEST FUNGAL DISEASES BY MICROBIAL ANTAGONISTS -minireview

Sorina Dinu

Abstract. This papersummarizes the data on use of antagonistic microorganisms as biocontrol agents against fungal phytopathogensthat affects postharvest fruits and vegetables. The useof synthetic fungicides has been the dominant control strategy for diseases caused by fungi.However, their excessive and inappropriate use in intensive agriculture has created problemsthat have led to environmental contamination, considerable residues in agricultural products, andphytopathogen resistance. Therefore, there is a need to generate alternatives that are safe, ecological,and economically viable to face this problem. Inhibition of phytopathogen in fruit/vegetableutilizing antagonistic microorganisms as biological control agents (BCA) could represent aviable and environmentally safe alternative to synthetic fungicides.

Keywords: postharvest, biocontrol,microbial antagonists, biological control agents

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THE WALNUT SHIELD BEARER COPTODISCA LUCIFLUELLA (CLEMENS, 1860) (LEPIDOPTERA: HELIOZELIDAE) – THE FIRST RECORD IN ROMANIA

Constantina Chireceanu,* Roxana-Violeta Mustățea, Andrei Teodoru.

Abstract: The invasive species Coptodisca lucifluella, also called the walnut shield bearer is recorded for the first time in Romania in this report. It is a leaf miner of North American origin, having been discovered for the first time in Europe (Italy) in 2010. Since then it has been confirmed in other three European countries, Hungary (2017), Ukraine (2019) and Bulgaria (2020), and now in Romania. In its native habitats, the species is known to be specialized on woody plants from the family Juglandaceae, genus Carya, in particular the pecan nut tree, Carya illinoinensis (Wangenh.) K. Koch. In the newly occupied territories in Europe, the moth was reported mainly on Juglans spp., especially J. regia (L.) (with very few instances on Juglans nigra (L.), Carya spp. and Pterocarya spp.). In August 2022, leaves of common walnut (J. regia) with mines of C. lucifluella were collected in Southern Romania (Bucharest, Ilfov and Giurgiu Counties) and Western Romania (Arad County). The walnuts were in cities, rural areas, alongside roads and walnuts spontaneously grown in vineyards, at altitudes from 60 to 200 m a.s.l.

Key words: Coptodisca lucifluella, leaf miner moth, mines, common walnut, invasive species

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