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tomato genes

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Posted by greenacres OR z7 (My Page) on
Tue, Apr 3, 07 at 21:45

There's been articles on how tangerine tomato has a more
available form of lycopene than most other tomatoes. This
seems to mean the tangerine gene, not the variety Tangerine
or Sweet Tangerine. Short of getting seeds for LA3002 from
UCDavis :-) is there a way to find out what general
varieties of tomato have the tangerine allele?

If anyone understands this, thanks!
Lisa

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RE: tomato genes

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The orange color tomatoes are better for you and taste better . However people buy by sight and prefer the red color . I hope this is a help.

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RE: tomato genes

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If you are interested in lycopene content and beta-carotene, please investigage Momordica Cochinchinensis. Nothing comes close, including tomatoes.

Here is a link that might be useful: wikipedia link

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RE: tomato genes

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"Tangerine" is produced by gene t, cultivars carrying gene t, include Golden Jubilee, Orange Early, Golden Delight, Sunray, Glecker Gold Glow, Golden Glow as well as a Burpee variety called simply, Tangerine.

However I am confused by all this business about cis lycopene isomer, I was always under the impression that gene t caused a lack of lycopene and a profusion of zeta-carotene.

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RE: tomato genes

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Apparently the gene t (tangerine mutation) causes the accumulation of prolycopene which is 7Z,9Z,7'Z,9'Z-tetra-cis-lycopene instead of the normal all-trans-lycopene.

The gene codes for an enzyme that isomerises carotenoids - carotenoid isomerase - CRTISO.

Here is a link that might be useful: Cloning of tangerine from Tomato Reveals a Carotenoid Isomerase

  
 

 

 


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