{"id":9067,"date":"2024-08-15T18:14:42","date_gmt":"2024-08-15T18:14:42","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=9067"},"modified":"2024-08-15T18:14:42","modified_gmt":"2024-08-15T18:14:42","slug":"fungus-in-pu-tree","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/hu\/gomba-a-pu-fan\/","title":{"rendered":"A Fusarium oxysporum HU0174 endofita gomba gomba gombaellenes m\u00e1sodlagos metabolitjainak vizsg\u00e1lata a Pu f\u00e1ban"},"content":{"rendered":"<p>A Fusarium oxysporum HU0174 endofita gomba gomba gombaellenes m\u00e1sodlagos metabolitjainak vizsg\u00e1lata a Pu f\u00e1ban<br \/>\nA k\u00f3rokoz\u00f3 gomb\u00e1k \u00e1ltal okozott fert\u0151z\u00e9s a betakar\u00edt\u00e1s ut\u00e1ni gy\u00fcm\u00f6lcs- \u00e9s z\u00f6lds\u00e9grothad\u00e1s egyik f\u0151 oka. Nemcsak jelent\u0151s gazdas\u00e1gi vesztes\u00e9geket okoz, hanem egyes gomb\u00e1k gombatoxinokat is termelnek, amelyek potenci\u00e1lis vesz\u00e9lyt jelentenek az emberi \u00e9let biztons\u00e1g\u00e1ra. A gomba\u00f6l\u0151 szerek haszn\u00e1lata nagym\u00e9rt\u00e9kben g\u00e1tolhatja a betakar\u00edt\u00e1s ut\u00e1ni gy\u00fcm\u00f6lcs- \u00e9s z\u00f6lds\u00e9gbetegs\u00e9gek el\u0151fordul\u00e1s\u00e1t \u00e9s kialakul\u00e1s\u00e1t. A n\u00f6vekv\u0151 kutat\u00e1sok \u00e9s a gyakorlat azonban azt mutatj\u00e1k, hogy a gomba\u00f6l\u0151 szerek nagym\u00e9rt\u00e9k\u0171, hossz\u00fa t\u00e1v\u00fa haszn\u00e1lata a k\u00f3rokoz\u00f3k rezisztenci\u00e1j\u00e1nak n\u00f6veked\u00e9s\u00e9hez vezethet. Ugyanakkor az emberek eg\u00e9szs\u00e9g- \u00e9s k\u00f6rnyezetv\u00e9delmi tudatoss\u00e1g\u00e1nak n\u00f6veked\u00e9s\u00e9vel egyre nagyobb figyelmet kap a biztons\u00e1gosabb, alacsonyabb toxicit\u00e1s\u00fa \u00e9s kisebb szermaradv\u00e1nytartalm\u00fa \u00faj term\u00e9szetes gomba\u00f6l\u0151 szerek kifejleszt\u00e9se.<\/p>\n<p>A fuz\u00e1riumgomb\u00e1k a gomb\u00e1k sz\u00e9les k\u00f6rben elterjedt csoportja, amely gombatoxinokat, p\u00e9ld\u00e1ul fumonizint \u00e9s T-2 toxint, valamint k\u00fcl\u00f6nb\u00f6z\u0151 szerkezet\u0171 \u00e9s potenci\u00e1lis gy\u00f3gy\u00e1szati \u00e9rt\u00e9kkel b\u00edr\u00f3 metabolitokat, p\u00e9ld\u00e1ul alkaloidokat, peptideket, amidokat, terp\u00e9neket, kinonokat \u00e9s piran\u00f3z-ketonokat termel. Az endofita bakt\u00e9riumok antibakteri\u00e1lis aktivit\u00e1s\u00e1nak sz\u0171r\u00e9se sor\u00e1n a n\u00f6v\u00e9nyekben a korai szakaszban azt tal\u00e1lt\u00e1k, hogy az endofita Fusarium sp. HU0174 rizsferment\u00e1ci\u00f3s term\u00e9ke j\u00f3 antagonista aktivit\u00e1ssal rendelkezik a citrusf\u00e9l\u00e9k z\u00f6ldpen\u00e9sz\u00e9vel szemben. E c\u00e9lb\u00f3l term\u00e9szetes term\u00e9kk\u00e9miai m\u00f3dszereket alkalmaztak e gomba rizsferment\u00e1ci\u00f3s term\u00e9k\u00e9ben tal\u00e1lhat\u00f3 m\u00e1sodlagos metabolitok izol\u00e1l\u00e1s\u00e1ra, azonos\u00edt\u00e1s\u00e1ra \u00e9s gombaellenes aktivit\u00e1s\u00e1nak \u00e9rt\u00e9kel\u00e9s\u00e9re.<\/p>\n<p>A ciklikus peptid mikrobi\u00e1lis eredet\u0171 gomba\u00f6l\u0151 szerek jellemz\u0151je a k\u00f6nny\u0171 leboml\u00e1s \u00e9s az alacsony szermaradv\u00e1ny, amelyek k\u00f6z\u00fcl a natamicint sz\u00e9les k\u00f6rben haszn\u00e1lj\u00e1k term\u00e9szetes antibakteri\u00e1lis szerk\u00e9nt az \u00e9lelmiszeriparban t\u00f6bb orsz\u00e1gban \u00e9s r\u00e9gi\u00f3ban. A ciklikus \u00e9szter peptidvegy\u00fcletek biol\u00f3giai aktivit\u00e1ssal rendelkeznek, p\u00e9ld\u00e1ul antibakteri\u00e1lis \u00e9s daganatellenes hat\u00e1ssal, \u00e9s egyre sz\u00e9lesebb k\u00f6rben vonzz\u00e1k a figyelmet. A ciklikus \u00e9szter peptidvegy\u00fcletek antibakteri\u00e1lis aktivit\u00e1s\u00e1nak kutat\u00e1sa viszonylag \u00e9rett, \u00e9s n\u00e9h\u00e1nyat m\u00e1r a klinikai gyakorlatban is alkalmaztak, k\u00f6zt\u00fck a kolisztin \u00e9s a daptomicin antibiotikumokat, amelyek a multidrog-rezisztens Gram-negat\u00edv, illetve Gram-pozit\u00edv bakt\u00e9riumok \u00e1ltal okozott betegs\u00e9gek kezel\u00e9s\u00e9re haszn\u00e1lhat\u00f3k. Viszonylag kev\u00e9s kutat\u00e1s foglalkozik a gombaellenes aktivit\u00e1ssal, bele\u00e9rtve a klavivopszin A \u00e9s B g\u00e1tl\u00f3 hat\u00e1s\u00e1t a Candida albicans, Aspergillus fumigatus \u00e9s Aspergillus niger k\u00f3rokoz\u00f3kra, 8, 4, illetve 16 \u03bc g\/ml MIC \u00e9rt\u00e9kekkel; a Verlamens A \u00e9s B er\u0151s g\u00e1tl\u00f3 hat\u00e1st mutatott a mang\u00f3 antrakn\u00f3zis k\u00f3rokoz\u00f3j\u00e1ra, 4,9, illetve 9,8 \u03bc g\/ml MIC \u00e9rt\u00e9kekkel. Vizsg\u00e1latok kimutatt\u00e1k, hogy az acutatum B \u00e9s C er\u0151s antagonista aktivit\u00e1st mutat az alma fekete gomba, az alma l\u00e1ncos lemezgomba \u00e9s a rizs spir\u00e1lis \u00fcreggomba ellen, azonos, 1,1 \u00e9s 10 \u03bc g\/ml MIC-\u00e9rt\u00e9kekkel. Ugyanakkor az acutatum B homol\u00f3g fusaripeptid A er\u0151s g\u00e1tl\u00f3 hat\u00e1st mutat a Candida albicans, Candida albicans, Candida albicans \u00e9s Aspergillus fumigatus gomba ellen, az IC50 \u00e9rt\u00e9kek 0,11 \u00e9s 0,24 \u03bc M k\u00f6z\u00f6tt mozognak, valamivel alacsonyabbak, mint az amfotericin B.<br \/>\nEbben a tanulm\u00e1nyban h\u00e9t vegy\u00fcletet, k\u00f6zt\u00fck \u00f6t ciklikus \u00e9szter peptidet \u00e9s k\u00e9t heterociklikus vegy\u00fcletet izol\u00e1ltak \u00e9s azonos\u00edtottak a Fusarium sp. HU0174, egy Pinus massoniana endofita gomba rizsferment\u00e1ci\u00f3s term\u00e9keinek etil-acet\u00e1t frakci\u00f3j\u00e1b\u00f3l. K\u00f6z\u00fcl\u00fck az 1. vegy\u00fclet \u00faj vegy\u00fclet volt, amely gazdag\u00edtja a Fusarium \u00e1ltal termelt m\u00e1sodlagos metabolitok sokf\u00e9les\u00e9g\u00e9t. A gombaellenes aktivit\u00e1si eredm\u00e9nyek azt mutatt\u00e1k, hogy a ciklikus \u00e9szter peptid vegy\u00fcletek acutatum A-D (1-4) 200 \u03bc g-on g\u00e1tl\u00f3 hat\u00e1st fejtettek ki a citrusf\u00e9l\u00e9k z\u00f6ldpen\u00e9sz\u00e9re \u00e9s a sarl\u00f3s pen\u00e9szre, de nem voltak g\u00e1tl\u00f3 hat\u00e1s\u00faak az Aspergillus niger \u00e9s az Aspergillus flavus eset\u00e9ben. Ez azt jelzi, hogy az acutatum vegy\u00fclet ciklikus \u00e9szter peptidj\u00e9nek gombaellenes aktivit\u00e1sa er\u0151s specificit\u00e1ssal rendelkezik, ami el\u0151zetesen tiszt\u00e1zza a Fusarium sp. HU0174 gombaellenes hat\u00f3anyagb\u00e1zis\u00e1t, \u00e9s bizonyos referencia\u00e9rt\u00e9kkel b\u00edr az \u00faj mikrobi\u00e1lis forr\u00e1sokb\u00f3l sz\u00e1rmaz\u00f3 gombaellenes szerek kifejleszt\u00e9s\u00e9hez.<\/p>","protected":false},"excerpt":{"rendered":"<p>Study on antifungal secondary metabolites of Fusarium oxysporum HU0174, an endophytic fungus in Pu tree Infection by pathogenic fungi is one of the main causes of post harvest fruit and vegetable rot. It not only causes significant economic losses, but some fungi also produce fungal toxins, posing a potential threat to human life safety. The [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Study on antifungal secondary metabolites of Fusarium oxysporum HU0174, an endophytic fungus in Pu tree - China Chemical Manufacturer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangextracts.com\/hu\/gomba-a-pu-fan\/\" \/>\n<meta property=\"og:locale\" content=\"hu_HU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Study on antifungal secondary metabolites of Fusarium oxysporum HU0174, an endophytic fungus in Pu tree - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"Study on antifungal secondary metabolites of Fusarium oxysporum HU0174, an endophytic fungus in Pu tree Infection by pathogenic fungi is one of the main causes of post harvest fruit and vegetable rot. 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