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[Degradation of fucoidan by the marine proteobacterium Pseudoalteromonas citrea]. [海洋蛋白细菌柠檬假单胞菌降解褐藻糖胶]。
Mikrobiologiia Pub Date : 2002-01-01
I Iu Bakunina, O I Nedashkovskaia, S A Alekseeva, E P Ivanova, L A Romanenko, N M Gorshkova, V V Isakov, T N Zviagintseva, V V Mikhaĭlov
{"title":"[Degradation of fucoidan by the marine proteobacterium Pseudoalteromonas citrea].","authors":"I Iu Bakunina, O I Nedashkovskaia, S A Alekseeva, E P Ivanova, L A Romanenko, N M Gorshkova, V V Isakov, T N Zviagintseva, V V Mikhaĭlov","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>It was found that Pseudoalteromonas citrea strains KMM 3296 and KMM 3298 isolated from the brown algae Fucus evanescens and Chorda filum, respectively, and strain 3297 isolated from the sea cucumber Apostichopus japonicus are able to degrade fucoidans. The fucoidanases of these strains efficiently degraded the fucoidan of brown algae at pH 6.5-7.0 and remained active at 40-50 degrees C. The endo-type hydrolysis of fucoidan resulted in the formation of sulfated alpha-L-fucooligosaccharides. The other nine strains of P. citrea studied (including the type strain of this species), which were isolated from other habitats, were not able to degrade fucoidan.</p>","PeriodicalId":502114,"journal":{"name":"Mikrobiologiia","volume":"71 1","pages":"49-55"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138809445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[The growth-promoting effect of Beijerinckia and Clostridium sp. cultures on some agricultural crops]. [贝氏菌和梭状芽孢杆菌培养物对某些农作物的生长促进作用]。
Mikrobiologiia Pub Date : 2002-01-01
L M Polianskaia, O T Vedina, L V Lysak, D G Zviagintsev
{"title":"[The growth-promoting effect of Beijerinckia and Clostridium sp. cultures on some agricultural crops].","authors":"L M Polianskaia, O T Vedina, L V Lysak, D G Zviagintsev","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>New strains of Beijerinckia mobilis and Clostridium sp. isolated from the pea rhizosphere were studied with respect to their promoting effect on the growth and development of some agricultural crops. Seed soaking in bacterial suspensions followed by the soil application of the suspensions or their application by means of foliar spraying was found to be the most efficient method of bacterization. The application of B. mobilis and Clostridium sp. cultures in combination with mineral fertilizers increased the crop production by 1.5-2.5 times. The study of the population dynamics of B. mobilis by the method of genetic marking showed that this bacterium quickly colonized the rhizoplane of plants and, therefore, had characteristics of an r-strategist. At the same time, Clostridium sp. was closer to K-strategists, since this bacterium slowly colonized the econiches studied. The introduction of the bacteria into soil did not affect the indigenous soil bacterial complex. The presence of Clostridium sp. slowed down the colonization of roots by the fungal mycelium. The possible mechanisms of the plant growth-promoting activity of B. mobilis and Clostridium sp. are discussed.</p>","PeriodicalId":502114,"journal":{"name":"Mikrobiologiia","volume":"71 1","pages":"123-9"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138809564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Effect of Rhizobium leguminosarum 252 agglutinins on the activity of some plant cell enzymes]. [根瘤菌 252 凝集素对某些植物细胞酶活性的影响]。
Mikrobiologiia Pub Date : 2001-05-01
L V Karpunina, E F Soboleva
{"title":"[Effect of Rhizobium leguminosarum 252 agglutinins on the activity of some plant cell enzymes].","authors":"L V Karpunina, E F Soboleva","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The incubation of pea seedling roots with the surface agglutinins R1 and R2 of Rhizobium leguminosarum 252 brought about an increase in the activity of proteases, beta-glucosidase, and, especially, succinate dehydrogenase in the roots. The data presented show that rhizobial agglutinins play an important part in the formation and functioning of legume-rhizobial associations.</p>","PeriodicalId":502114,"journal":{"name":"Mikrobiologiia","volume":"70 3","pages":"348-51"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138809429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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