Auxins are a class of plant growth substance (often called phytohormone or plant hormone). Auxins play an essential role in coordination of many growth and behavioral processes in the plant life cycle. Overview Auxins derive their name from the Greek word auxano (to grow). They were the first of the major plant hormones to be discovered and are a major coordinating signal in plant development. Their pattern of active transport through the plant is complex. They typically act in concert with (or opposition to) other plant hormones. For example, the ratio of auxin to cytokinin in certain plant tissues determines initiation of root versus shoot buds. Thus a plant can (as a whole) react on external conditions and adjust to them, without requiring a nervous system. On a molecular level, auxins have an aromatic ring and a carboxylic acid group (Taiz and Zeiger, 1998). The most important member of the auxin family is indole-3-acetic acid (IAA). It generates the majority of auxin effects in intact plants, and is the most potent native auxin. However, molecules of IAA are chemically labile in aqueous solution, so IAA is not used commercially as a plant growth regulator. * Naturally-occurring auxins include 4-chloro-indoleacetic acid, phenylacetic acid (PAA) and indole-3-butyric acid (IBA). * Synthetic auxin analogsinclude 1-naphthaleneacetic acid (NAA), 2,4-dichlorophenoxyacetic acid (2,4-D), and others. {| |+ Gallery of native auxins |- |
indole-3-acetic acid (IAA)
Indole-3-butyric acid (IBA)
4-chloroindole-3-acetic acid (4-CI-IAA)
2-phenylacetic acid (PAA)
|+ Gallery of synthetic auxins
2,4-Dichlorophenoxyacetic acid (2,4-D)
α-Naphthalene acetic acid (α-NAA)
2-Methoxy-3,6-dichlorobenzoic acid (dicamba)
4-Amino-3,5,6-trichloropicolinic acid (tordon or picloram)
2,4,5-Trichlorophenoxyacetic acid (2,4,5-T)
α-(p-Chlorophenoxy)isobutyric acid (PCIB, an antiauxin)
Auxins are often used to promote initiation of adventitious roots and are the active ingredient of the commercial preparations used in horticulture to root stem cuttings. They can also be used to promote uniform flowering, to promote fruit set, and to prevent premature fruit drop. Used in high doses, auxin stimulates the production of ethylene. Excess ethylene can inhibit elongation growth, cause leaves to fall (leaf abscission), and even kill the plant. Some synthetic auxins such as 2,4-D and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) have been used as herbicides. Broad-leaf plants (dicots) such as dandelions are much more susceptible to auxins than narrow-leaf plants (monocots) like grass and cereal crops. These synthetic auxins were the active agents in Agent Orange, a defoliant used extensively by American forces in the Vietnam War. |}
'Where can you find a seating plan for Parc Des Princes in Paris?
http://www.eventtravel.com/cms/display_seatingplan.aspx?seatingplan_objid=142
What are the instruments used in the song born to run by Bruce Springsteen?
In this song, there aren't many instruments that Bruce has used. The instruments are the synthesizer, drums, vocals and base guitar
How many concerts has Bruce Springsteen played?
No. As of 2016, he is still alive and well. His 67th birthday was September 23, 2016.
(born September 23, 1949)
Does Bruce Springsteen receive fan mail?
Does Bruce Springsteen wear hairpiece?
I believe so judging from his pictures showing the front crest of hair is seemingly in a fixed position. Also, he was receding back in The River album photos in 1979.
Take a close look at recent photos; sure looks like plug marks in front scalp beneath the crest. Hey he looks good regardless.
When did Bruce Springsteen produce his first album?
It was in 1965 that he got his first break into the actual Music business by becoming the lead guitarist for a band called the Castilles. The Castilles recorded two songs at a public recording studio and played at a wide range of venues.
When and in what journal did Bruce springsteen publish Suus?
. Bruce Springsteen published his poem "Suus" in an experimental literary magazine Coe Review number 9 in 1978.
Is Bruce Springsteen Scottish?
Bruce is Italian on his mother's side and Irish/Dutch on his father's side.
Have the kings of leon ever covered a Bruce springsteen song?
No i don't think so
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They rarely do covers but in the Summer of 2010 they played The Pixies - Where Is My Mind.
The band a huge fans of The Pixies.
What songs has Bruce Springsteen written for other bands?
Meatloaf, Bon Jovi, John Mellencamp, U2, The Arcade Fire, The Hold Steady, The Killers, The Gaslight Anthem
Titus Andronicus, Marah, Crooked Fingers, Southside Johnny and the Asbury Jukes
How can you send an email to Bruce Springsteen?
One way that may work is to send it through his official website.
What is the value of hit 45 rpm records of the 1960s?
i can download it for free. and it takes up no space in my house. and i can carry it in my iPod. so i would say that selling it would be hard, when other options are so much more convenient. if you want to pay the shipping costs, you can send it to me, and i will store it with other 45's for a small monthly fee.
What is the 1995 Bruce Springsteen record from 1995 worth?
This depends on the serial number on the bottom left hand corner of the record cover. If between the numbers 1 and 2000, the record is part of the original press and could be worth as much as $200 depending on the condition. If the number is higher than 2000, the record is likely worth between $50 and $100.
Did Courteney Cox date Bruce springsteen?
Nope..She was just the pull her on stage girl at a few of his concerts, from what I understand. God, she was just as gorgeous back then!!
How many albums has Bruce Springsteen sold worldwide?
He has sold more than 65 million albums in the United States and 120 million worldwide.