Re: glands on Terminalia arjuna

[Satish Phadke]

Excellent recordings Surajit ji.
Looking forward to many more.

On Tue, Apr 24, 2012 at 11:37 PM, surajit koley <surajitno...@gmail.com> wrote:

Sir,

 

Recorded these images today. Each mature (but not old) leaf, except one, bears a single petiolar gland. Examined 7 leaves from a twig.

 

Regards,

 

surajit

--
Dr Satish Phadke

[surajit koley]

Thank you very much, Satish Sir, attaching those images here... :)

 

(all images recorded on 24-04-12, 9.50 a.m., Hooghly, WB)

 

Regards,

 

surajit

[Tanay Bose]

Hi Surajit Ji.

I stole one of you picture and tried to point the leaf glads in Terminalia (attached).

Tanay

--

Tanay Bose

Research & Teaching Assistant. 

Department of Botany.
University of British Columbia .
6270 University Blvd.
Vancouver, B.C. V6T 1Z4 (Canada)
Phone: 778-323-4036 (Mobile)

              604-822-2019 (Lab)

              604-822-6089  (Fax)

tanay...@botany.ubc.ca

Webpages: 

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EfloraofIndia

[surajit koley]

Good evening Tanay Sir. You are welcome for stealing as much as you can, this enriches me :)

Regards,

surajit

On Thu, Apr 26, 2012 at 5:44 AM, Tanay Bose <tanay...@gmail.com> wrote:

Hi Surajit Ji.

I stole one of you picture and tried to point the leaf glads in Terminalia (attached).

Tanay

[ushadi Micromini]

Tanay... good
now tell me about the other picture that Surajit has marked some spot in thebody of the leaf.. could you please?
thanks
Usha di

--
Usha di
===========

[surajit koley]

Actually i was thinking if those bulges on the leafblade are also initiation of glands or not!

Regards,

surajit

[Tanay Bose]

Hi Usha Di.

I should confess that I have no idea about the origin of the bulges on the leaf they can be caused by leaf anomaly

or may be due to insect infestation. I have seen  insects at there larval stage(?) take shelter inside leaves. I came 

to know about this by accident. Once I saw bunch of "mole" like structures on the mango leaf initially I thought them 

to be fungal infection later on making section I found insects within them!

Regards

Tanay

[Vijayasankar]

Extrafloral nectories (other than the glands that we have been discussing about so far) are common in members of Combretaceae. But they usually occur in the axils of nerves on the lower surface of the leaf. You may examine the undersurface of badam (Terminalia catappa) leaf for e.g., to see the hairy structures (called 'domatia'). However, the spots pointed by Surajit ji do not seem to be the extrafloral nectories. They may be (bacterial?) infections?

Thanks Surajit ji, for the clear pictures of glands. They seem to vary in number and position in this species too.

 

Regards 

 

Vijayasankar Raman
National Center for Natural Products Research
University of Mississippi

[Mahadeswara]

Excellent......excellent.......Great contribution.  

[Neil Soares]

Hi,  For my photographs of this please check my mail dated 10th May 2010. [For some reason am not able to Copy & Paste the link here possibly because I am using a Yahoo account. Will appreciate any help in this matter].                       With regards,                         Neil Soares. --- On Thu, 4/26/12, Vijayasankar <vijay.b...@gmail.com> wrote:

[surajit koley]

Tanay Sir, "mole" like structures on mango leaves are common here. Now i learn that these are caused by some insect.

 

Regards,

 

surajit

[surajit koley]

Oh! Vijayasankar Ji, this botany terminology is very hard to crack! Who knew that plants too have nerves!

 

However, i recorded more glands from another ARJUN tree, today. Examined yet another. Majority of those leaves do have a single gland on their base, some have a pair, one on each side of midrib, and as you said, all on the lower surface.

 

It is intersting to note, as you can see in one of the attached pics, that often a leaf lacks any gland when the opposite facing leaf has a pair of them! But this not a strict rule because i have seen exceptions too.

 

Attaching two more images that i recorded today.

 

Regards,

 

surajit

[surajit koley]

Thank you very much Mahadeswara Sir, all credit goes to all eflora members...:)

 

Regards,

 

surajit

[surajit koley]

Neil Sir, there is no difference between the glands of your Arjuna and my Arjuna! Found your post at - https://groups.google.com/forum/?fromgroups#!searchin/indiantreepix/terminalia$20neil/indiantreepix/wSE17uB8tmM/-hR6vPXjoFcJ

 

and an image showing the gkands at - https://indiantreepix.googlegroups.com/attach/82179ecb2885a1a7/Leaf+glands.jpg?view=1&part=6

 

Regards,

 

surajit

[Neil Soares]

Thank you Surajit for providing the link.                 With regards,                   Neil Soares. --- On Thu, 4/26/12, surajit koley <surajitno...@gmail.com> wrote:

[surajit koley]

Neil Sir, if i hadn't searched it i would have certainly missed your, er, Arjuna's glands :)

 

Thank you & Regards,

 

surajit

[nitesh joshi]

could  be an gall like thing as this family is rich in tannins....just guessing though

[surajit koley]

Thank you Nitesh Sir for the suggestion.... i was thinking which microbes could feed on tannin! A google search gave many interesting links

1) http://www.sciencedirect.com/science/article/pii/S0377840109003150

2) http://www.ansci.cornell.edu/plants/toxicagents/tannin.html,

.... etc.

 

Regards,

 

surajit