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G.L. 巴伦的几个特征对石南植物的菌根形成控制很重要。

Several Characteristics of G.L. Barron Important for Heather Plants' Controlled Mycorrhization.

作者信息

Mikheev Vyacheslav S, Struchkova Irina V, Churkina Ludmila M, Brilkina Anna A, Berezina Ekaterina V

机构信息

Department of Biochemistry and Biotechnology, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, Gagarin Avenue 23, 603950 Nizhny Novgorod, Russia.

LLC "Mikofit", Internatsionalnaya 56b, 606440 Bor, Russia.

出版信息

J Fungi (Basel). 2023 Jul 5;9(7):728. doi: 10.3390/jof9070728.

Abstract

G.L. Barron is a recognized fungal species capable of forming ericoid mycorrhiza with various positive effects on host plants; therefore, newly found and previously uncharacterized strains may be valuable for heather plants' controlled mycorrhization. Characteristics of the F3860 strain were studied, i.e., mycelium growth on various nutrient media and the ability to secrete auxins and enzymes. F3860 grew rapidly on malt extract agar and potato dextrose agar. It was also able to grow on nutrient media suitable for heather plant cultivation. The presence of the flavonoids rutin and quercetin increased the mycelium growth rate compared to the control, starting from the 8th to the 13th days of cultivation. The ability to secrete auxins was confirmed with bioassay and thin-layer chromatography, and their content, as well as phytase activity, was estimated spectrophotometrically. Both in nutrient media with tryptophan and without it, F3860 secreted about 6 μg IAA/mL growth medium. F3860 possessed extracellular phytase, protease, and phenol oxidase activities. The investigation indicates F3860's promise for heather seedling inoculation as an approach to increase their fitness.

摘要

G.L. Barron是一种公认的真菌物种,能够与多种宿主植物形成石楠状菌根,并对宿主植物产生各种积极影响;因此,新发现的以及以前未被描述的菌株对于石南植物的可控菌根形成可能具有重要价值。对F3860菌株的特性进行了研究,即其在各种营养培养基上的菌丝体生长情况以及分泌生长素和酶的能力。F3860在麦芽提取物琼脂和马铃薯葡萄糖琼脂上生长迅速。它也能够在适合石南植物栽培的营养培养基上生长。与对照相比,从培养的第8天到第13天,黄酮类化合物芦丁和槲皮素的存在提高了菌丝体的生长速率。通过生物测定和薄层色谱法证实了其分泌生长素的能力,并通过分光光度法估计了生长素的含量以及植酸酶活性。无论在含有色氨酸的营养培养基中还是不含色氨酸的营养培养基中,F3860均分泌约6μg IAA/mL生长培养基。F3860具有细胞外植酸酶、蛋白酶和酚氧化酶活性。该研究表明F3860在接种石南幼苗方面具有潜力,可作为提高其适应性的一种方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dd3d/10381259/af561dbfe68d/jof-09-00728-g001.jpg

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