If something truly revolutionary is published and it's relevant to your own work, it's very common to repeat the experiment yourself. If it works, great, continue on with your own work and reference the original paper when you publish new results.
If it doesn't work, the outcome can range from: (1) mentally note and move onto an alternative if they are available to (2) spend a ton of time trying to "fix" it, including contacting the original author.
The only time you see reproducibility experiments published is if the original paper made some serious errors, including outright fraud.
An there is no way you'd be able to test the reproducibility of every paper because some papers aren't that important. The important ones get the attention and if you see multiple scientists referencing a work (and building off of it), you can have confidence it actually works.
If there is only a single paper about the result, most scientists will regard that with a certain suspicion. That doesn't mean we expect every new thing to be fake, but there are just too many ways these experiments can go wrong.
One problem is certainly that the negative reproduction of experiments are more often communicated informally, and not published. If you're active in the field you will likely hear from the scientists that tried to reproduce the results without any success. But most of these are not published.
Any experiment worth replicating, is usually also worth expanding and building on, and that is where the actual verification is taking place. Science works in this regard, but it doesn't work as cleanly and efficiently as one could hope for.
Yeah, proven by expensive studies that were funded by the company making the GMO. Who is going to pay for another study to try to disprove it?
There's a reason we sprayed DET all over our vegetables for years before it was banned: there was no scientific studies proving that it was harmful, even though it clearly was harmful in hindsight.
Science is not instant, and there's no way someone can claim that some brand-new GMO is "perfectly safe", without any long-term studies on its effects over 10, 20, 30 years of exposure. That's just not possible. And yet you try to explain it to these science zealots and they just brush you off as being "anti-science".
Anyway, beyond the 'philosophy of science' issue of whether you can prove something, there is good affirmative evidence that existing GMOs are safe for numerous reasons.
First, there's no mechanistic reason to think they would be dangerous. T-DNAs are not somehow magically toxic to humans; everything you eat is riddled with millennia of t-dnas, old viruses, transposon blooms, etc. etc.
The technologies themselves should be safe as well. BT is well understood and embraced by the organic community as an applied natural pesticide, so you would need to find evidence that the localization somehow makes it toxic. Glyphosate resistance is also unlikely to have any effect a priori because it affects a metabolic pathway completely absent in animals.
Argue all you like about how nothing can be 'perfectly safe', sure, but there's no reason to think that GMOs are dangerous, and people have looked quite hard. ______
Finally, just look at the Seralini pile-of-bullshit for evidence that there's plenty of incentive to publish anything critical of GMOs. No one is sitting on career-making evidence.
That's like saying "there's no reason to think peanuts would be dangerous" since humans eat them all the time. And yet, they are deadly to some humans. No one knows why.
But they do know that food allergies are far more prevalent in the U.S. than in other countries. And now, suddenly, people in Africa and China are starting to exhibit food allergies that the U.S. has had for a while. So what have we started shipping over to them that's causing these allergies? Who will fund that study?
Do you have some references?
In case it's not clear, I'd like to read articles about food allergies that have been common in USA for some time now becoming common in countries that are coming out of 2nd world status and into 1st world.
The very idea that there can be "something wrong with GMOs" is as anti-scientific as the narrative that there can be "something wrong with medicines". It's anti-scientific on principle, because it's not the safety of individual products you are taking issue with, it's the very existence of the entire scientific field.
Anyways, it takes about 10 years for the average Ag product to make it to market. That's on par with the time for the average drug. If you are serious about safety, start talking about real improvements that could be made to the Ag approval process. Start talking about the flaws in individual studies. Until you do something like that, your anti-science blanket dismissal of an entire field is as ridiculous as someone who is "against medicines".
Are you kidding me? Have you read Taleb on the risks of GMOs? He argues that the possibility space of danger from GMOs is different from the possibility space of danger from regular breeding.
GMO is controlled alteration of specific genes in a crop. Why on earth should we assume this is less safe than uncontrolled changes? Massive changes of crop DNA has been going on for decades. Food you eat every day has originally been produced by essentially nuking seeds and making lots of random mutations. One has then grown various "nuked" seeds looking for those with favorable characteristics. Plants get changed getting genes from bacteria, cross breeding and all sorts of things. Why on earth should be assume uncontrolled massive changes of plant DNA is somehow safer than GMO?
GMO is not really what needs to be proven. It is the other methods of changing plants which need to prove that they are safer than GMO.
The problem with GMO isn't the science of it. The problem with GMO is the politics. Here I agree with the anti-GMO crowd. Companies like Monsanto are highly immoral and a scourge of the earth. It is companies owning particular strains of seeds and requiring everybody to keep buying from them which naturally causes resentment.
Said scientist will gain immense fame and recognition if they show established ideas are wrong. (Source: academia Physicist)
Especially in psych/bio, a negative finding can almost always be blamed on the experimentalist -- even more so if they are young. It is no great feat to conduct a study so poorly that fail to detect a signal others have reported.
Sometimes you find evidence that doesn't quite match up with previous work, but if an explanatory framework isn't forthcoming, it can be difficult to say who's results are right, and what they mean. On the other hand, sometimes you come across something blatantly wrong, so you do your follow up experiments to confirm and you're all set. It's only the latter case that will quickly make it into a manuscript.
I will say, I've seen some big corrections (like this-allele-was-actually-a-completely-different-mutant bad) that just get buried in the results section of a subsequent publication, and no retraction was ever submitted for the original paper. That was definitely a failure in the field, and likely the result of the status of the authors involved.
At least in life sciences (can't comment on other fields), it's not that scientists don't repeat each other's results. After all, if you're going to invest a significant fraction of your tiny lab budget on a research project, you need to make sure that the basic premise is sound, so it's not uncommon that the first step is to confirm the previous published result before continuing. And if the replication fails, it's obviously not a wise idea to proceed with a project that relies on the prior result. But that work never makes it into a paper.
If the replication succeeds, great! Proceed with the project. But it's time-consuming and expensive to make the reproduction publication worthy, so it will probably get buried in a data supplement if it's published at all.
If the replication fails, it's even more time-consuming and expensive to convincingly demonstrate the negative result. Moreover, the work is being done by an ambitious student or postdoc who is staring down a horrible job market and needs novel results and interesting publications in order to have a future in science. Why would someone like that spend a year attacking the work of an established scientist over an uninteresting and possibly wrong negative result, and getting a crappy paper and an enemy out of it in the end, instead of planning for their own future?
If enough people fail to replicate a result, it becomes "common knowledge" in the field that the result is wrong, and it kind of fades away. But it's not really in anyone's interest to write an explicit rebuttal, so it never happens.