Production of fungal and bacterial growth modulating secondary metabolites is widespread among mycorrhiza-associated streptomycetes.
Production of fungal and bacterial growth modulating secondary metabolites is widespread among mycorrhiza-associated streptomycetes.
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DOI：
10.1186/1471-2180-12-164
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发表时间：
2012-08-02
期刊：
影响因子：
4.2
通讯作者：
Tarkka MT
中科院分区：
文献类型：
--
作者：
Schrey SD;Erkenbrack E;Früh E;Fengler S;Hommel K;Horlacher N;Schulz D;Ecke M;Kulik A;Fiedler HP;Hampp R;Tarkka MT
对菌根相关细菌的研究表明，细菌与真菌的相互作用在菌根形成过程中起着重要作用，并影响植物的健康。我们调查了来自挪威云杉菌根的链霉菌，放线菌是已知的抗生素生产者和真菌拮抗剂，主要是毛皮菌属真菌。15株链霉菌对供试的菌根真菌和植物病原真菌(鹅膏菌、尖孢镰刀菌、柱状孢子菌、异巴斯氏菌、异巴斯氏菌、双色漆树、大红花毛霉)的抑制作用有很大差异。部分链霉菌对菌根形成真菌二色漆树的生长有促进作用，对大黄毛霉菌的生长影响较小。细菌对链霉菌的反应与真菌不同。以链霉菌属为例。AcM11对大多数受试真菌的抑制作用比其他受试链霉菌对细菌的抑制作用小。确定的链霉菌-微生物相互作用的模式与次生代谢物产生的不同模式有关。值得注意的是，潜在的新代谢物是由对真菌拮抗较少的菌株产生的。大多数已确定的代谢物是抗生素(如放线菌酮、阿替酚)和铁载体(如阿魏酸、去铁胺)。只有一株链霉菌能激活植物的抗病性。与菌根相关的链霉菌似乎在抑制真菌和细菌的生长方面具有重要作用。此外，我们的研究表明，链霉菌菌株不是真菌的一般拮抗剂，可能会产生仍未描述的代谢物。
Studies on mycorrhiza associated bacteria suggest that bacterial-fungal interactions play important roles during mycorrhiza formation and affect plant health. We surveyed Streptomyces Actinobacteria, known as antibiotic producers and antagonists of fungi, from Norway spruce mycorrhizas with predominantly Piloderma species as the fungal partner. Fifteen Streptomyces isolates exhibited substantial variation in inhibition of tested mycorrhizal and plant pathogenic fungi (Amanita muscaria, Fusarium oxysporum, Hebeloma cylindrosporum, Heterobasidion abietinum, Heterobasidion annosum, Laccaria bicolor, Piloderma croceum). The growth of the mycorrhiza-forming fungus Laccaria bicolor was stimulated by some of the streptomycetes, and Piloderma croceum was only moderately affected. Bacteria responded to the streptomycetes differently than the fungi. For instance the strain Streptomyces sp. AcM11, which inhibited most tested fungi, was less inhibitory to bacteria than other tested streptomycetes. The determined patterns of Streptomyces-microbe interactions were associated with distinct patterns of secondary metabolite production. Notably, potentially novel metabolites were produced by strains that were less antagonistic to fungi. Most of the identified metabolites were antibiotics (e.g. cycloheximide, actiphenol) and siderophores (e.g. ferulic acid, desferroxiamines). Plant disease resistance was activated by a single streptomycete strain only. Mycorrhiza associated streptomycetes appear to have an important role in inhibiting the growth of fungi and bacteria. Additionally, our study indicates that the Streptomyces strains, which are not general antagonists of fungi, may produce still un-described metabolites.
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影响因子：
9.4
作者：
Frey-Klett, P;Chavatte, M;Garbaye, J
通讯作者：
Garbaye, J
影响因子：
5
作者：
Lehr, Nina A.;Adomas, Aleksandra;Tarkka, Mika T.
通讯作者：
Tarkka, Mika T.
DOI：
10.1073/pnas.1934677100
发表时间：
2003-11-25
影响因子：
11.1
作者：
Challis, GL;Hopwood, DA
通讯作者：
Hopwood, DA
影响因子：
4.2
作者：
Elo, S;Maunuksela, L;Haahtela, K
通讯作者：
Haahtela, K
影响因子：
4.4
作者：
HIRSCH, CF;CHRISTENSEN, DL
通讯作者：
CHRISTENSEN, DL