hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
 Navigation
Articles
Gallery of Plants
Blog
Tech Blog
Plant Profiles
Patents
Mailing Lists
    FAQ
    Netiquette
    Search ALL lists
    Search help
    Subscription info
Top Stories
Links
sHORTurl service
Tom Clothier's Archive
 Top Stories
Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

Unauthorized use of a plant doesn't invalidate it's patent

RSS story archive

Re: Chirality

  • Subject: Re: Chirality
  • From: brian lee <lbmkjm@yahoo.com>
  • Date: Tue, 25 Oct 2011 18:53:53 -0700 (PDT)

Dear Ted,

Aloha.

I agree with Kathy.  It is very interesting indeed.  My favorite spiraling in Araceae are the coiled spadixes of Anthurium wendlingeri.  However, I was not observant enough to notice the chirality, sinistral(left) or dextral (right).  Can they have both on the same plant?  List?  I have no idea about  molecular geometry and its influence on the chirality of Anthurium wendlingeri, nor evolutionary advantage to direction of coil.  We should have Christopher comment on this...

Aloha,

Leland

From: Kathy <ku5@yahoo.com>
To: Discussion of aroids <aroid-l@www.gizmoworks.com>
Sent: Tuesday, October 25, 2011 4:58 PM
Subject: Re: [Aroid-l] Chirality

About "handedness" with aroids, Ted: when the spathe of Amorph titanum unwraps and opens it's easy to observe this, and all the ones that have flowered for me have been left handed, and all the ones at University of Wisconsin have been right handed. I don't know the reason for this, but it's interesting.

Sent from my iPhone

On Oct 24, 2011, at 12:46 PM, Theodore Held <oppenhauser2001@gmail.com> wrote:

> Dear List,
>
> Attached here (with luck) is a picture I made of a pair of blooms from
> a Cryptocoryne griffithi (identity confirmed by Peter Boyce at the
> recent IAS show). Whatâs interesting to me is that the outer spathe
> tip (called the flag for Crypts) of the plants twists to the left for
> one and to the right for the other. These plants are vegetative kin.
>
> I have also seen the pairing of left-handed and right-handed
> inflorescences on Cryptocoryne pontederifolia.
>
> Has anyone ever noticed mirror-image flower forms like this with any
> other aroids? In chemistry differences involving only mirror images
> are referred to as chiral isomers and originate with subtle
> molecular-level geometry. In normal life this is called âhandedness.â
> In a plant bloom, the differences may display as macroscopic
> phenomena, but likely originate with early development, also perhaps
> on a molecular level.
>
> Please enlighten me if anyone knows about this oddity.
>
> Ted Held.
> <IMG_2017.jpg>
> _______________________________________________
> Aroid-L mailing list
> Aroid-L@www.gizmoworks.com
> http://www.gizmoworks.com/mailman/listinfo/aroid-l
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l


_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l


Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index



 © 1995-2015 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement