In vitro evaluation of drying supports and adhesive polymers as adjuvants for biocontrol of Diplodia seriata by Trichoderma harzianum and Clonostachys rosea

IF 1.9 3区农林科学 Q2 AGRONOMY Phytopathologia Mediterranea Pub Date : 2023-09-15 DOI:10.36253/phyto-14096

Katherina AGUIRRE, Luz M. PEREZ, Jaime R. MONTEALEGRE

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Abstract

Grapevine trunk diseases (GTDs) can cause large losses in vineyards. Diplodia seriata is an important GTD pathogen in Chile. Development and use of bioprotectors is a complementary alternative to the use of agrochemicals for disease management. To produce bioformulations for management of D. seriata, additives could be used to maintain viability and survival of biocontrol agents, such as Trichoderma harzianum and Clonostachys rosea. Effects of drying supports (inulin, maltodextrin, lactose, or talc) and adhesive polymers (carboxymethylcellulose, Aloe vera gel, or chitosan) were assessed on D. seriata conidium viability and mycelium development of T. harzianum and C. rosea, and for their biocontrol capacity against D. seriata. T. harzianum and C. rosea cultured in Potato Dextrose Agar containing inulin (at 10% w/v) maltodextrin (10% w/v), lactose (6% w/v), or talc (4% w/v), or the adhesive polymers carboxymethylcellulose (0.5% w/v), Aloe vera gel (0.5% w/v), or chitosan (1.5% w/v), maintained their biocontrol activity against D. seriata. These additives did not enhance D. seriata development. Therefore, these preparations, at the respective indicated concentrations, can be included in bioformulations for management of disease caused by this pathogen.

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哈兹木霉和蔷薇木霉体外防蝇效果的干燥载体和黏附聚合物的体外评价

葡萄树干病害(gtd)会给葡萄园造成巨大的损失。智利双plodia seriata是一种重要的GTD病原菌。开发和使用生物保护剂是使用农用化学品进行疾病管理的补充替代品。为了生产防治系列性木霉的生物制剂，可以使用添加剂来维持哈兹木霉和玫瑰红枝霉等生物防治剂的活力和存活率。研究了干燥载体(菊粉、麦芽糖糊精、乳糖或滑石粉)和黏附聚合物(羧甲基纤维素、芦荟凝胶或壳聚糖)对哈兹兰和玫瑰红梭菌孢子活力和菌丝体发育的影响，以及它们对系列梭菌的生物防治能力。在含有菊粉(10% w/v)、麦芽糖糊精(10% w/v)、乳糖(6% w/v)、滑石粉(4% w/v)或黏附聚合物羧甲基纤维素(0.5% w/v)、芦荟凝胶(0.5% w/v)、壳聚糖(1.5% w/v)的马铃薯葡萄糖琼脂培养基中培养的哈氏菌和玫瑰红孢菌对seriata的生物防治效果良好。这些添加剂并没有促进龙葵的发育。因此，这些制剂，在各自指示的浓度下，可以包括在生物制剂中，用于管理由该病原体引起的疾病。

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来源期刊

Phytopathologia Mediterranea 生物-植物科学

CiteScore

4.40

自引率

8.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Phytopathologia Mediterranea is an international journal edited by the Mediterranean Phytopathological Union. The journal’s mission is the promotion of plant health for Mediterranean crops, climate and regions, safe food production, and the transfer of new knowledge on plant diseases and their sustainable management. The journal deals with all areas of plant pathology, including etiology, epidemiology, disease control, biochemical and physiological aspects, and utilization of molecular technologies. All types of plant pathogens are covered, including fungi, oomycetes, nematodes, protozoa, bacteria, phytoplasmas, viruses, and viroids. The journal also gives a special attention to research on mycotoxins, biological and integrated management of plant diseases, and the use of natural substances in disease and weed control. The journal focuses on pathology of Mediterranean crops grown throughout the world. The Editorial Board of Phytopathologia Mediterranea has recently been reorganised, under two Editors-in-Chief and with an increased number of editors.