Cadmium stress causes differential effects on growth and the secretion of carbon-degrading enzymes in four mycorrhizal basidiomycetes.

IF 1.5 4区 生物学 Q4 MYCOLOGY
Gilka Rocha Vasconcelos da Silva, Vinicius Henrique De Oliveira, Mark Tibbett
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引用次数: 0

Abstract

We hypothesised that cadmium exposure would hinder growth and secretion of carbon-degrading enzymes by mycorrhizal fungi, and that this would vary according to their tolerance to cadmium stress. The enzymes measured were β-Glucosidase, β-Xylosidase, β-D-cellubiosidase, N-acetyl-β-Glucosaminidase in three strains of ectomycorrhizal fungi Hebeloma subsaponaceum, Scleroderma sp., Hebeloma sp. and a feremycorrhizal fungus Austroboletus occidentalis. Fungi were subjected to cadmium stress for 28 d (in modified Melin-Norkrans liquid medium). The results showed unanticipated differential response of enzyme activities among the fungal species, including potential hormesis effects. Austroboletus occidentalis showed an increase in enzyme activity under cadmium stress.

Abstract Image

Abstract Image

镉胁迫对4种菌根担子菌的生长和碳降解酶的分泌有不同的影响。
我们假设镉暴露会阻碍菌根真菌的生长和碳降解酶的分泌,并且这将根据它们对镉胁迫的耐受性而变化。测定了三种外生菌根真菌(皂下Hebeloma subsaponaceum、硬皮病Hebeloma sp.、Hebeloma sp.)和一种铁菌根真菌(Austroboletus occidentalis)中的β-葡萄糖苷酶、β-木糖苷酶、β- d -纤维素苷酶、n -乙酰-β-葡萄糖苷酶。真菌受镉胁迫28 d(改良Melin-Norkrans液体培养基)。结果表明,不同真菌种类之间的酶活性存在着意想不到的差异,包括潜在的激效效应。镉胁迫下,西Austroboletus occidentalis酶活性明显升高。
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来源期刊
Mycoscience
Mycoscience MYCOLOGY-
CiteScore
3.00
自引率
7.10%
发文量
32
审稿时长
3 months
期刊介绍: Mycoscience is the official English-language journal of the Mycological Society of Japan and is issued bimonthly. Mycoscience publishes original research articles and reviews on various topics related to fungi including yeasts and other organisms that have traditionally been studied by mycologists. The research areas covered by Mycoscience extend from such purely scientific fields as systematics, evolution, phylogeny, morphology, ecology, physiology, biochemistry, genetics, and molecular biology, to agricultural, medical, and industrial applications. New and improved applications of well-established mycological techniques and methods are also covered.
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