{"id":122322,"date":"2021-07-24T09:38:08","date_gmt":"2021-07-24T16:38:08","guid":{"rendered":"https:\/\/www.pandasilk.com\/lethal-mutant-of-silkworm\/"},"modified":"2025-01-15T10:40:29","modified_gmt":"2025-01-15T18:40:29","slug":"lethal-mutant-of-silkworm","status":"publish","type":"post","link":"https:\/\/www.pandasilk.com\/cs\/lethal-mutant-of-silkworm\/","title":{"rendered":"Smrt\u00edc\u00ed mutace bource moru\u0161ov\u00e9ho"},"content":{"rendered":"

Hedv\u00e1bnictv\u00ed, tradice star\u00e1 tis\u00edce let, se neust\u00e1le vyv\u00edj\u00ed. S rostouc\u00ed popt\u00e1vkou po hedv\u00e1b\u00ed se v\u011bdci a chovatel\u00e9 sna\u017e\u00ed optimalizovat produkci a kvalitu vl\u00e1ken. Av\u0161ak tento proces s sebou nese i ur\u010dit\u00e1 rizika, a jedn\u00edm z nich je i mo\u017enost vzniku let\u00e1ln\u00edch mutac\u00ed u bource moru\u0161ov\u00e9ho (Bombyx mori). Tyto mutace, a\u010dkoliv vz\u00e1cn\u00e9, p\u0159edstavuj\u00ed pro hedv\u00e1bnick\u00fd pr\u016fmysl v\u00e1\u017enou hrozbu.<\/p>\n

Genetick\u00e9 pozad\u00ed let\u00e1ln\u00edch mutac\u00ed<\/h3>\n

Let\u00e1ln\u00ed mutace jsou zm\u011bny v genetick\u00e9m k\u00f3du organismu, kter\u00e9 vedou k jeho \u00famrt\u00ed, a to bu\u010f v embryon\u00e1ln\u00edm st\u00e1diu, nebo pozd\u011bji b\u011bhem v\u00fdvoje. U bource moru\u0161ov\u00e9ho mohou tyto mutace ovlivnit r\u016fzn\u00e9 procesy, jako je tvorba hedv\u00e1b\u00ed, metabolismus, imunitn\u00ed syst\u00e9m a v\u00fdvoj org\u00e1n\u016f.<\/p>\n

P\u0159\u00ed\u010diny vzniku let\u00e1ln\u00edch mutac\u00ed<\/h3>\n

Vznik let\u00e1ln\u00edch mutac\u00ed m\u016f\u017ee b\u00fdt zp\u016fsoben \u0159adou faktor\u016f, v\u010detn\u011b:<\/p>\n

    \n
  1. Spont\u00e1nn\u00ed mutace: N\u00e1hodn\u00e9 chyby, kter\u00e9 vznikaj\u00ed b\u011bhem replikace DNA.<\/li>\n
  2. Mutageny: Vn\u011bj\u0161\u00ed faktory, jako je z\u00e1\u0159en\u00ed nebo chemick\u00e9 l\u00e1tky, kter\u00e9 po\u0161kozuj\u00ed DNA.<\/li>\n
  3. Inbreeding: P\u0159\u00edbuzensk\u00e9 k\u0159\u00ed\u017een\u00ed, kter\u00e9 m\u016f\u017ee v\u00e9st k akumulaci \u0161kodliv\u00fdch recesivn\u00edch gen\u016f.<\/li>\n<\/ol>\n

    Projevy let\u00e1ln\u00edch mutac\u00ed u bource moru\u0161ov\u00e9ho<\/h3>\n

    Projevy let\u00e1ln\u00edch mutac\u00ed u bource moru\u0161ov\u00e9ho mohou b\u00fdt velmi rozmanit\u00e9 a z\u00e1vis\u00ed na konkr\u00e9tn\u00edm genu, kter\u00fd je mutac\u00ed posti\u017een. N\u011bkter\u00e9 mutace se projev\u00ed ji\u017e v embryon\u00e1ln\u00edm st\u00e1diu, kdy larva nen\u00ed schopna se vyvinout. Jin\u00e9 mutace se projev\u00ed a\u017e v pozd\u011bj\u0161\u00edch f\u00e1z\u00edch v\u00fdvoje, nap\u0159\u00edklad:<\/p>\n\n\n\n\n\n\n\n\n
    Projev mutace<\/th>\nPopis<\/th>\n<\/tr>\n<\/thead>\n
    Nedostate\u010dn\u00e1 produkce hedv\u00e1b\u00ed<\/td>\nLarva produkuje men\u0161\u00ed mno\u017estv\u00ed hedv\u00e1b\u00ed nebo hedv\u00e1b\u00ed ni\u017e\u0161\u00ed kvality.<\/td>\n<\/tr>\n
    Deformace kokonu<\/td>\nKokon m\u00e1 nepravideln\u00fd tvar a nen\u00ed vhodn\u00fd pro zpracov\u00e1n\u00ed.<\/td>\n<\/tr>\n
    Slab\u00e1 imunita<\/td>\nLarva je n\u00e1chyln\u011bj\u0161\u00ed k infekc\u00edm a nemocem.<\/td>\n<\/tr>\n
    Poruchy metabolismu<\/td>\nLarva nedok\u00e1\u017ee spr\u00e1vn\u011b zpracov\u00e1vat \u017eiviny a hyne.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Dopad let\u00e1ln\u00edch mutac\u00ed na hedv\u00e1bnictv\u00ed<\/h3>\n

    Let\u00e1ln\u00ed mutace u bource moru\u0161ov\u00e9ho mohou m\u00edt negativn\u00ed dopad na hedv\u00e1bnick\u00fd pr\u016fmysl. Ztr\u00e1ta larev v d\u016fsledku mutac\u00ed sni\u017euje celkovou produkci hedv\u00e1b\u00ed a m\u016f\u017ee v\u00e9st k ekonomick\u00fdm ztr\u00e1t\u00e1m pro chovatele. Proto je d\u016fle\u017eit\u00e9 monitorovat v\u00fdskyt mutac\u00ed a zav\u00e1d\u011bt opat\u0159en\u00ed k jejich minimalizaci.<\/p>\n

    Prevence let\u00e1ln\u00edch mutac\u00ed<\/h3>\n

    Pro minimalizaci rizika vzniku a \u0161\u00ed\u0159en\u00ed let\u00e1ln\u00edch mutac\u00ed je d\u016fle\u017eit\u00e9:<\/p>\n

      \n
    1. Vyh\u00fdbat se inbreedingu a db\u00e1t na genetickou diverzitu chovan\u00fdch populac\u00ed.<\/li>\n
    2. Minimalizovat vystaven\u00ed larev mutagen\u016fm.<\/li>\n
    3. Pravideln\u011b kontrolovat chov a odstra\u0148ovat jedince s projevy mutac\u00ed.<\/li>\n<\/ol>\n

      Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee a\u010dkoliv let\u00e1ln\u00ed mutace u bource moru\u0161ov\u00e9ho p\u0159edstavuj\u00ed pro hedv\u00e1bnictv\u00ed hrozbu, lze jejich v\u00fdskyt a dopad minimalizovat vhodn\u00fdmi chovatelsk\u00fdmi postupy a pe\u010dliv\u00fdm monitoringem. Dal\u0161\u00ed v\u00fdzkum v oblasti genetiky bource moru\u0161ov\u00e9ho je nezbytn\u00fd pro lep\u0161\u00ed pochopen\u00ed mechanism\u016f vzniku a projevu mutac\u00ed a pro v\u00fdvoj efektivn\u011bj\u0161\u00edch strategi\u00ed prevence.<\/p>\n","protected":false},"excerpt":{"rendered":"

      Hedv\u00e1bnictv\u00ed, tradice star\u00e1 tis\u00edce let, se neust\u00e1le vyv\u00edj\u00ed. S rostouc\u00ed popt\u00e1vkou po hedv\u00e1b\u00ed se v\u011bdci a chovatel\u00e9 sna\u017e\u00ed optimalizovat produkci a kvalitu vl\u00e1ken. Av\u0161ak tento proces s sebou nese i ur\u010dit\u00e1 rizika, a jedn\u00edm z nich je i mo\u017enost vzniku let\u00e1ln\u00edch mutac\u00ed u bource moru\u0161ov\u00e9ho (Bombyx mori). Tyto mutace, a\u010dkoliv vz\u00e1cn\u00e9, p\u0159edstavuj\u00ed pro hedv\u00e1bnick\u00fd pr\u016fmysl<\/p>\n","protected":false},"author":1,"featured_media":89464,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37831],"tags":[],"class_list":["post-122322","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sericulture-cs","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/posts\/122322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/comments?post=122322"}],"version-history":[{"count":0,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/posts\/122322\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/media\/89464"}],"wp:attachment":[{"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/media?parent=122322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/categories?post=122322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/tags?post=122322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}