Jasmonic Acid - Page 2

xyz · 02-23-2008, 06:07 AM

Quote:

Originally Posted by vegetables

Aspen colonies have a single root system and are essentially one plant. The roots grow and they are able to send new stems up, which turn to trees.

Now if only we could get our plants to do that...

Agreed, I had heard that about aspens.
Although it does appear that plants can communicate using pheromones.

Quote:

Do Trees Talk? - Trees do communicate using pheromones
It looks like a fairy tale story copied from "Lord of the rings" or from a science fiction story, but scientists proved that trees do communicate.

One chemist made an experiment: he investigated how willows react when attacked by a caterpillar, so he assigned them to two lots: one which he invaded with caterpillars and another as a witness, leaving it "untouched".

After 14 days, he picked up leaves from the two plots to feed in the lab some other caterpillars. He found that the larvae that ate small amounts of leaves were growing very slowly. But what was more puzzling is that leaves from both plots were equally "unpleasant" for the caterpillars.

What happened?

Both willow groups filled their leaves with a chemical that proved to be repulsive for the insects.

A similar experiment was made on poplars. On similar plots, one was doused with chemicals contained by insects eating on the trees. Both groups of poplars developed repulsive compounds, but when the two plots of young trees were separated in different rooms, only the doused plot synthesized the chemicals.

In both experiments, the tress in different plots did not communicate through their roots or other organs, the only conclusion being that they communicated with each other by air, employing warning pheromones. Thus, plants are not passive, at the mercy of natural phenomena and attackers.

Other experiments also showed that plants can contra-attack in group, and this is done using vegetable pheromones. When informed about an occurring attack, till 50 % of the compounds synthesized by a tree can be defense products, like tannins, alkaloids and peptides, mostly in leaves, their most vulnerable organ.

But trees were found to communicate not only for defense, but also to time their blooming. In fact, blooming at the same time can also be a defense mechanism, as the consumers will not have enough time to eat too many flowers, as it would happen if trees bloomed one after another.

Recently, parasite plants were even found to sniff their host-plants, selecting the preferred ones! Some corn varieties defend themselves against the root worm (Diabrotica virgifera) emitting chemicals that attract minute nematode worms that kill the root worms, which are in fact the larvae of a beetle.

Do Trees Talk? - Trees do communicate using pheromones - Softpedia

I wonder what kind of communications go on with pot plants, esp with clones that are really just one large plant.

firsttimer2065 · 02-23-2008, 10:06 AM

i just ordered some jasmonic acid, along with some colchicine.

im currently 5 weeks into my breeding program (lots o seeds) and in the next month or so, ill do experiments with both and journal them.

xyz · 02-23-2008, 10:27 AM

Quote:

Originally Posted by firsttimer2065

i just ordered some jasmonic acid, along with some colchicine.

im currently 5 weeks into my breeding program (lots o seeds) and in the next month or so, ill do experiments with both and journal them.

I will be there. PM me if you want to coordinate Colchicine efforts.

knna · 02-24-2008, 05:28 AM

Very interesting topic. Ill wait your results. How are you going to experiment with the jasmonic acid?

Any new way of stressing a plant to produce more resin is welcome, in the seek for a way with the less lateral effects (less yield, hermies, etc).

Anyway, i would like to know if a sudden increase of resin necessarily leads to a increase in THC. Have fast developed tricomes the same content in cannabinoids? Lately ive been thinking that maybe it isnt the case, but we need some way of measuring cannabinoids to check it. Qualitative test about it (smoking

) lead me to think that, but i would like to know if my insight is correct, at least parcially. First, in order to know if stresing plants to produce more resin worth, and if possible, cuantify the cost/benefit of it, and if differents methods of stressing plants have different effects. The jasmonic acid seems a good way to test it

firsttimer2065 · 02-24-2008, 10:03 AM

definitely.

I need to do some reading up, i believe the best way to apply it is through foliar spraying. i could be wrong though, like i said, i need to do some reading.

Ill have probably 30-40 seeds in the next 4-5 weeks from some Spice ive been breeding, so ill definitely keep you guys updated. I think xyz and I are going to coordinate our experiments.

Duner · 02-24-2008, 12:05 PM

Quote:

Originally Posted by knna

Anyway, i would like to know if a sudden increase of resin necessarily leads to a increase in THC. Have fast developed tricomes the same content in cannabinoids? Lately ive been thinking that maybe it isnt the case, but we need some way of measuring cannabinoids to check it.

Maybe some combination of Jasmonic Acid and UVB lighting would do the trick, although I think that since THC is produced as a defense measure that maybe increased trichs will also trigger increased THC production....I see this cup as half full

Where did you find Jasmonic Acid FirstTimer2065?

firsttimer2065 · 02-24-2008, 12:35 PM

my friend owns a lab and was able to order it for me.

i couldnt find it online.

Chai_Guy · 02-26-2008, 11:03 PM

Maybe some combination of Jasmonic Acid and UVB lighting would do the trick, although I think that since THC is produced as a defense measure that maybe increased trichs will also trigger increased THC production....I see this cup as half full

Where did you find Jasmonic Acid FirstTimer2065?[/quote]

--I am a PhD student in Plant Molecular Biology...You guys are very very impressively well educated. That said I will offer what I know.

Jasmonates are selectively up-regulated in response to insect attack. Insects pierce basal leaf cells or petioles very often, releasing distinct alkaloids and unique hormone derivatives recognized by the plant. Jasmonates trigger quite a few responses.

1. Jasmonates alter C and N partitioning away from apical growth into flower finishing and Yes...Trichome production. The exceptions to this rule are trichome production and root allelochemical exudation, both are forms of plant chemical defense.

2. Plants will go through a brief period (48 hrs) of excessive transpiration upon Jasmonate release. Be careful of dosing.

3. If excessive exogenous Jasmonate is applied to leaves, the leaves will essentially be aborted, akin to abscisic acid or salicyclate applications.

I think it's a very sly method of increasing trichome production. Just realize that you are tricking the plant into thinking it's being attacked by insects. This carries other ramifications other than increased trichome production. TIMING will be the most important factor for a successful use of Jasmonates. Put it on when the vast majority of your calyx development is completed. Hope I helped. This place absolutely rules. I wish I could do real MJ science in my lab.

Duner · 02-26-2008, 11:37 PM

Quote:

Originally Posted by Chai_Guy

--I am a PhD student in Plant Molecular Biology...You guys are very very impressively well educated. That said I will offer what I know.
......
I think it's a very sly method of increasing trichome production. Just realize that you are tricking the plant into thinking it's being attacked by insects. This carries other ramifications other than increased trichome production. TIMING will be the most important factor for a successful use of Jasmonates. Put it on when the vast majority of your calyx development is completed. Hope I helped. This place absolutely rules. I wish I could do real MJ science in my lab.

First off let me explain...I'm not educated, I'm just curious

That being said I am very interested in furthering my education in an ecological field...To my understanding that would entail things like plant functions, and biological evolution...which has Jasmonic Acid written all over it. I don't want to go too far off track, but I wonder how did you like that program, and what might you recommend for someone interested in this subject?

Chai_Guy · 02-27-2008, 07:22 PM

Not straying too far off topic...

I got my B.S. in 'Plant Science'. If you're interested in plant growth and plant response to environmental stimuli (in a more practical sense) I suggest pursuing (at the very least) an A.S. in Horticulture or 'Plant Science'. It will teach you the basics of all hormones (of which Jasmonates fall under), pH, nutrients and pruning / shaping techniques. A B.S. will begin to venture into physiology and genetics, both of which have REALLY cool implications for the MJ grower with a nice 'lab' setup and the $ to play.

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