Наследственные свойства микроорганизмов

По сравнению с другими, более высокоорганизованными растениями и животными, микроорганизмы наиболее тесно и непосредственно связаны с окружающей их средой. Однако именно на примере микроорганизмов зарубежные вейсманисты-морганисты в последнее время пытаются доказать, что живые организмы не изменяют своих наследственных свойств под влиянием внешних условий.

Не стремясь осветить все стороны изменчивости микроорганизмов, мы покажем, как изменяются некоторые из них под влиянием лекарственных веществ.

Еще в 1887 году русский ученый Г. Косяков опубликовал в трудах парижского института Пастера подробные исследования о приспособлении микробов к ядовитым для них веществам: сулеме, буре и борной кислоте. Его исследования показали, что первоначальные культуры сибирской язвы росли в питательных средах, содержащих сулему в количестве— 1   часть на 20000 частей среды. После нескольких пересевов на питательные среды с возрастающими количествами сулемы Косяков получил культуры, которые росли на среде, содержащей почти вдвое больше сулемы. Ученый сделал совершенно правильный вывод. Он считал, что микробы сибирской язвы под влиянием ядов изменили свои свойства и дали поколения, более устойчивые к ним.

Начало научному изучению проблемы изменчивости бактерий положил своими замечательными исследованиями крупнейший советский микробиолог, почетный академик Н. Ф. Гамалея. Им был установлен факт изменчивости мечниковского вибриона. В 1894—1896 годах он установил, что бактерии изменяются под влиянием кофеина и солей лития.

Современные исследования также подтвердили факт приобретения микробами устойчивости к лекарственным веществам. Оказалось, что если очень чувствительный к пенициллину микроб — золотистый стафилококк (вызывающий нагноения и заражение крови)—выращивать на питательной среде с возрастающим содержанием этого лекарственного вещества, то появляются микробы, которые оказываются в 80 000 раз более устойчивыми к пенициллину, чем исходные.

Повышение устойчивости микробов к пенициллину может происходить we только в лабораторных опытах, в пробирке, но и в организме больного, правда, в меньшей степени. Следует подчеркнуть, что повышение устойчивости происходит довольно медленно. Поэтому в человеческом организме оно может быть вызвано продолжительным периодом лечения.

 

 

84 Comments

  1. Hi, all is going nicely here and ofcourse every one is
    sharing data, that’s actually excellent, keep up writing.

  2. Hey! This is my 1st comment here so I just wanted to give a quick shout out
    and tell you I genuinely enjoy reading your articles.
    Can you suggest any other blogs/websites/forums that cover
    the same subjects? Thanks for your time!

  3. Unquestionably imagine that that you said. Your favorite reason seemed
    to be at the internet the simplest factor to consider of.
    I say to you, I definitely get annoyed whilst other folks consider worries that they just do not
    recognise about. You controlled to hit the nail upon the top and also
    outlined out the entire thing without having side effect , folks
    could take a signal. Will likely be back to get more. Thanks

  4. Hi my family member! I wish to say that this article is amazing, nice written and come with approximately all significant infos.
    I’d like to see extra posts like this .

  5. Hmm it looks like your site ate my first comment (it was extremely
    long) so I guess I’ll just sum it up what I wrote and say, I’m thoroughly enjoying your blog.
    I as well am an aspiring blog writer but I’m still new to the whole
    thing. Do you have any helpful hints for first-time blog writers?
    I’d really appreciate it.

  6. Thanks designed for sharing such a fastidious thinking, article is nice, thats why i have
    read it fully

  7. What i do not realize is in truth how you are no longer actually
    much more neatly-preferred than you may be now. You
    are so intelligent. You realize thus significantly in relation to this
    topic, produced me in my view consider it from so many numerous angles.
    Its like men and women aren’t involved until it is one thing to do
    with Lady gaga! Your individual stuffs excellent.

    At all times handle it up!

  8. This piece of writing will assist the internet users
    for setting up new weblog or even a blog from start to
    end.

  9. Great post. I was checking constantly this blog and I’m impressed!
    Extremely helpful information specially the last part :) I care for such information much.
    I was seeking this particular information for a long time.
    Thank you and good luck.

  10. What’s Taking place i’m new to this, I stumbled upon this I have found
    It positively useful and it has aided me out loads.
    I am hoping to contribute & assist other customers like
    its aided me. Great job.

  11. It’s the best time to make a few plans for the long run and it is time to be happy.

    I have read this publish and if I could I want to suggest you few interesting issues or tips.
    Maybe you can write next articles regarding this article.

    I want to learn even more things approximately it!

  12. WOW just what I was searching for. Came here by searching for having holiday travel

  13. I am not positive the place you’re getting your info, but great topic.
    I needs to spend a while finding out more or understanding more.
    Thanks for fantastic information I was on the lookout for this info for my mission.

  14. It’s very simple to find out any topic on web as compared to books,
    as I found this paragraph at this site.

  15. Excellent website you have here but I was curious if you knew of any message boards that cover
    the same topics discussed in this article? I’d really like to be a
    part of group where I can get responses from other knowledgeable people that share
    the same interest. If you have any suggestions,
    please let me know. Kudos!

  16. I am not certain the place you’re getting your info, but good topic.
    I needs to spend a while finding out much more or figuring out more.
    Thank you for excellent information I used to be on the lookout for this information for my mission.

  17. I got this web site from my buddy who informed me on the
    topic of this web page and at the moment this time I am visiting this website
    and reading very informative content at this time.

  18. If some one needs expert view concerning running a blog then i propose him/her to go to
    see this web site, Keep up the pleasant work.

  19. Write more, thats all I have to say. Literally,
    it seems as though you relied on the video to make your point.
    You clearly know what youre talking about, why waste your intelligence on just posting videos to your weblog
    when you could be giving us something enlightening to read?

  20. Appreciating the commitment you put into your
    site and in depth information you offer. It’s good to come
    across a blog every once in a while that isn’t the same out of date rehashed material.

    Wonderful read! I’ve saved your site and I’m adding your RSS feeds to my Google account.

  21. I’m extremely inspired with your writing talents as neatly as with the layout for
    your weblog. Is that this a paid subject matter or did you customize it your self?
    Either way keep up the nice quality writing,
    it’s rare to look a great blog like this one
    today..

  22. Why people still use to read news papers when in this technological globe everything is presented on web?

  23. I’ve been exploring for a little for any high-quality articles or blog posts on this kind of space .
    Exploring in Yahoo I finally stumbled upon this website. Studying this information So i’m satisfied
    to show that I’ve an incredibly good uncanny feeling I found out exactly what I needed.
    I most for sure will make certain to do not forget this web
    site and give it a look regularly.

  24. Hey there! Do you know if they make any plugins to protect against
    hackers? I’m kinda paranoid about losing everything I’ve worked hard on. Any recommendations?

  25. Very rapidly this site will be famous among all blog users,
    due to it’s good posts

  26. Thanks for the good writeup. It actually was a entertainment account it.
    Look advanced to more added agreeable from you! By the way, how could we keep in touch?

  27. What’s Happening i am new to this, I stumbled upon this
    I’ve found It absolutely helpful and it has aided me out loads.
    I’m hoping to contribute & aid other customers like its helped me.
    Good job.

  28. Excellent blog right here! Additionally your web site a lot
    up fast! What host are you the use of? Can I am getting your affiliate
    link on your host? I wish my site loaded up as quickly as yours lol

  29. It’s actually a nice and useful piece of info. I’m glad that you just shared this helpful info with us.

    Please keep us up to date like this. Thank you for sharing.

  30. I’m really enjoying the design and layout of your website.
    It’s a very easy on the eyes which makes it much
    more enjoyable for me to come here and visit more often. Did you hire out a developer to create your theme?
    Superb work!

  31. Hi there colleagues, good paragraph and good arguments commented here, I am actually
    enjoying by these.

  32. Does your blog have a contact page? I’m having a tough time locating it
    but, I’d like to shoot you an email. I’ve got
    some creative ideas for your blog you might be interested in hearing.
    Either way, great blog and I look forward to seeing
    it expand over time.

  33. Great web site you’ve got here.. It’s difficult to find excellent writing
    like yours these days. I seriously appreciate individuals like you!
    Take care!!

  34. Incredible! This blog looks just like my old one!
    It’s on a completely different subject but it has pretty much the same page
    layout and design. Wonderful choice of colors!

  35. Whats up very nice website!! Man .. Beautiful ..
    Superb .. I will bookmark your website and take the feeds additionally?
    I am glad to seek out a lot of useful information right here in the put up,
    we need develop more techniques in this regard, thanks for sharing.
    . . . . .

  36. Hi, i think that i saw you visited my weblog so i came
    to “return the favor”.I’m attempting to find things to enhance my web
    site!I suppose its ok to use a few of your ideas!!

  37. Hi everyone, it’s my first visit at this web page, and post is in fact fruitful in favor of me, keep up
    posting these articles.

  38. I am not sure where you’re getting your information, but great topic.
    I needs to spend some time learning much more or understanding more.
    Thanks for wonderful information I was looking for this information for my mission.

  39. Hi there, I want to subscribe for this web site to obtain most recent updates, therefore where can i
    do it please assist.

  40. Article writing is also a fun, if you be acquainted with afterward you can write or
    else it is complicated to write.

  41. Yes! Finally something about solar powered cell phone charger.

  42. Hello my friend! I want to say that this post is amazing, great
    written and include almost all vital infos. I would like to look extra posts like this .

  43. Hello everyone, it’s my first go to see at this web site,
    and post is truly fruitful in support of me, keep
    up posting such content.

  44. bookmarked!!, I like your web site!

  45. Attractive section of content. I just stumbled upon your blog and
    in accession capital to assert that I get actually enjoyed account your blog posts.
    Anyway I’ll be subscribing to your augment and even I achievement you access consistently quickly.

  46. Yes! Finally something about social media techniques.

  47. Generally I do not read article on blogs, however I would like to say that
    this write-up very compelled me to check out and
    do so! Your writing style has been amazed me. Thank you, very great post.

  48. Hi, yes this piece of writing is truly good and I have learned lot of things from it on the topic of blogging.
    thanks.

  49. Unquestionably imagine that which you said. Your favorite justification seemed to be at
    the internet the simplest thing to have in mind of.
    I say to you, I certainly get annoyed at the same
    time as folks consider worries that they just don’t recognise
    about. You controlled to hit the nail upon the top and
    also defined out the entire thing without having side effect , folks can take a signal.
    Will probably be again to get more. Thanks

  50. Very nice post. I just stumbled upon your weblog and
    wished to say that I have really enjoyed surfing around your blog posts.
    After all I will be subscribing for your feed and I’m
    hoping you write again very soon!

  51. Great delivery. Great arguments. Keep up the amazing
    effort.

  52. I simply want to say I am new to weblog and certainly liked you’re web-site. Most likely I’m planning to bookmark your blog . You certainly have amazing articles and reviews. Appreciate it for sharing your web site.

  53. naturally like your web-site but you need to take a look
    at the spelling on several of your posts.
    Many of them are rife with spelling issues and I in finding it very bothersome to tell the reality on the
    other hand I will certainly come again again.

  54. Peculiar article, totally what I wanted to find.

  55. Hello There. I found your blog using msn. This is an extremely well written article.
    I’ll be sure to bookmark it and come back to read more of your useful information. Thanks for the post.
    I will definitely return.

  56. Hmm it seems like your blog ate my first comment (it was extremely
    long) so I guess I’ll just sum it up what I had written and
    say, I’m thoroughly enjoying your blog. I as well am
    an aspiring blog blogger but I’m still new to everything.
    Do you have any points for newbie blog writers?
    I’d genuinely appreciate it.

  57. This is my first time go to see at here and i am really pleassant to read everthing
    at alone place.

  58. Hi there, just became aware of your blog through Google, and found that it is really informative.
    I’m going to watch out for brussels. I’ll be grateful if you continue this in future.

    A lot of people will be benefited from your writing.
    Cheers!

  59. I’m not sure exactly why but this web site is loading
    extremely slow for me. Is anyone else having this issue or is it
    a problem on my end? I’ll check back later and see if the problem still
    exists.

  60. Howdy would you mind letting me know which webhost you’re working with?
    I’ve loaded your blog in 3 different internet browsers and I must say this blog
    loads a lot quicker then most. Can you recommend a good internet hosting provider at a reasonable price?
    Many thanks, I appreciate it!

  61. I’m not sure exactly why but this blog is loading extremely
    slow for me. Is anyone else having this problem or is it a problem on my end?

    I’ll check back later and see if the problem still exists.

  62. Wow, superb blog layout! How long have you been blogging for?
    you made blogging look easy. The overall look of your site is wonderful, let alone
    the content!

  63. This is a very good tip especially to those new to the blogosphere.
    Short but very precise information… Thank you for sharing this one.
    A must read post!

  64. There is certainly a lot to know about this topic. I love all of the
    points you’ve made.

  65. Oh my goodness! Amazing article dude! Thank you so much,
    However I am going through problems with your RSS. I don’t
    know why I can’t subscribe to it. Is there anybody else
    having identical RSS issues? Anyone who knows the answer can you kindly
    respond? Thanx!!

  66. I have read so many posts about the blogger lovers except
    this paragraph is actually a nice article, keep it up.

  67. Hi I am so excited I found your weblog, I really found you by mistake,
    while I was looking on Google for something else, Anyways I am here
    now and would just like to say thank you for a fantastic post
    and a all round exciting blog (I also love the theme/design), I don’t have time to look over it all at the minute but I have book-marked it and also added your RSS feeds, so
    when I have time I will be back to read a lot more,
    Please do keep up the excellent b.

  68. Good ?I should definitely pronounce, impressed with your website. I had no trouble navigating through all tabs and related information ended up being truly simple to do to access. I recently found what I hoped for before you know it at all. Reasonably unusual. Is likely to appreciate it for those who add forums or something, site theme . a tones way for your customer to communicate. Nice task.

  69. I always spent my half an hour to read this weblog’s
    articles or reviews every day along with a cup of coffee.

  70. Howdy, i read your blog from time to time and i own a
    similar one and i was just curious if you get
    a lot of spam comments? If so how do you protect against it, any plugin or anything you can suggest?
    I get so much lately it’s driving me mad so any assistance is very much appreciated.

  71. Great items from most people, man. I have be aware your stuff previous to and you’re simply highly great. I actually like whatever you have acquired here, really like what you happen to be stating and exactly how wherein you are expressing it. You are making it entertaining also, you continue to care for to continue it smart. I can not wait to read simple things far more from you actually. BLOGURL is really an awesome site. NAME

  72. Hello to every , for the reason that I am in fact eager of reading this webpage’s post to be updated regularly.
    It contains fastidious data.

  73. Your way of explaining everything in this article is actually good, every one be capable
    of simply be aware of it, Thanks a lot.

  74. I would like to thnkx for the efforts you’ve put in writing this website. I’m hoping the same high-grade website post from you in the upcoming as well. Actually your creative writing skills has inspired me to get my own website now. Actually the blogging is spreading its wings fast. Your write up is a great example of it.

  75. I like what you guys are up too. Such intelligent work and reporting! Carry on the superb works guys I have incorporated you guys to my blogroll. I think it will improve the value of my website :)

  76. I just like the valuable information you provide in your articles.
    I will bookmark your blog and test again right here regularly.
    I’m rather sure I will learn plenty of new
    stuff proper here! Best of luck for the next!

  77. bookmarked!!, I really like your web site!

  78. You are my intake , I possess few web logs and very sporadically run out from to post .

  79. Heya i am for the first time here. I came across this board and I find It really useful & it helped me out much. I hope to give something back and help others like you helped me.

  80. Thank you a lot for providing individuals with such a special chance to check tips from this blog. It can be very lovely plus full of a lot of fun for me personally and my office fellow workers to visit the blog at the least thrice a week to see the new guidance you have got. And lastly, I’m usually fascinated concerning the attractive information you serve. Some two facts on this page are really the most efficient we’ve ever had.

  81. I love your blog.. very nice colors & theme. Did you make this website yourself or did you hire someone to do
    it for you? Plz respond as I’m looking to
    create my own blog and would like to find out where u got
    this from. cheers

  82. You have mentioned very interesting points ! ps nice web site . «The appearance of right oft leads us wrong.» by Horace.

  83. I wish to express my passion for your generosity giving support to those people that really want assistance with that situation. Your special commitment to passing the solution across ended up being really interesting and have frequently encouraged individuals just like me to achieve their endeavors. Your own informative advice means so much to me and additionally to my colleagues. Thank you; from everyone of us.

  84. The first thing to do is to decide where well-developed body is stronger to place your tracking system; most people would prefer it of view so in the unlikely event it was stolen the thief will not are aware of it is there. Under the dashboard is the best place while is close to all the wiring you need to get connected to. Remember that the system can penetrate most materials but not metal so under the hood will not work. The GPS part of the system like to be kept away from any electronics such as the radio to prevent feedback.It will make it a lot harder, if not impossible, for international (as from Nigeria or Russia) or local scam artists to pull a first one an individual by using fake profiles and stolen photographs.Apple’s MacBook Intel Core Duo Notebook features a glossy display, a built-in iSight camera, iLife ’06 and Tiger woods. Tech specs: the Macbook has 1.83GHz Intel Core Duo, a 512MB memory in addition 60GB hard drive. Now, that’s a associated with Apple computer for the amount of money.In a live video chat posted to his official website Thurs (7/14/11), the Canadian crooner provided song details regarding the Yuletide project which the duet with fellow Canuck superstar Shania twain.There will also news eats the most visited page for local news, local sports, and both Minnesota and North Dakota news stories, as Fargo meets your needs on the Minnesota line.Stop communications with anyone that pressures you for personal information, attempts to trick information out of you, or who mocks or makes fun of individuals for being so smart. They are only attempting to manipulate you into disclosing the info they really would like. Reputable contacts will understand and thank you for caution – especially in the event you female dealing with a male.There is a few good news for fans of the TNT verify. The Atlanta based cable network has ordered the series back a lot more season courtroom shenanigans. TNT announced late last month that the legal drama would return for 2nd season. Tonight fans may have a for you to chat along with portrayers of this spontaneous legal duos. After season finale on TNT, Mark-Paul Gosselaar and Breckin Meyer will participate within a live free sex at tnt.tv/chat. Fans interested in participating can submit their questions using the «Franklin & Bash» Facebook pageor Twitter using the hash tags #FandB.Affiliate marketing is not easy and it’s not a get-rich-quick scheme. Treat it just when would a consistent job. You will need to put in time, as well as perhaps lots than it before you will earn a nickel. To most of you, your first sale may not come quick. It didn’t for me.This video chat-a-thon could be the latest promotion technique Moore has deployed in trying to raise money for your «The Recover.» On May 29, he promised to follow anyone an individual who pledged $10 to «The Bounce Back» on Tweets.In gazing ratings of the UK’s popular online dating sites, this can be hard to tell which on the list of top three, Match, eHarmony and DirectDating comes in as the top dating websites. While Match and eHarmony are sometimes mentioned first, DirectDating comes with the most members only. So, it looks like can join some online online dating services mentioned above and be at liberty. It depends on individual preferences.

Оставить коментарий