What does ectodesmata mean?

already exists.

Would you like to merge this question into it?

already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

exists and is an alternate of .

Ectodesmata, sometimes referred to as ectoteichodes (or teichodes for short) are plant cell wall traversing areas. They are in fact the counterpart of plasmodesmata which are well established "open" membrane connections between the cytoplasm of adjacent cells. To demonstrate the presence of ectodesmata, plant tissues are fixed in a Hg-saturated fixative. Distinct Hg precipitates form on outer plant cell walls and show particular patterns on cross sections of wall fragments. It was assumed that these patterns are formed by non-uniform distribution of reducing agents along the walls. It was assumed further that the particular distribution of these reducing agents is a result of locally controlled excretion and/or extrusion. However, it has never been elucidated if ectodesmata are real physical structures. Research on this plant science subject started approximately in the 1930's and more or less ended in the 1970's as no one believed anymore that these "structures" were actually existent and had any biological significance. However, in 1995 a paper was published linking the presence of ectodesmata and deposits of callose in outer cell walls, thus resurrecting the incentive to re-address the possible biological significance of ectodesmata. ref: A relationship between callose and ectodesmata in epidermal cells of Allium cepa L. A.N.M. van Amstel (1995) Plant Cell Reports 15:707-711
1 person found this useful

What does AT mean?

AT-stands for "Automatic Transmission"...or if your speaking ofSUV's it can also mean "All Terrain". In computers, AT stands for "Advanced Technology" and was the IBMPC that c

What is the meaning of ON?

It is an information to state that any action,process or function has begun. . It is the US abbreviation for the name of the Canadian Province of Ontario. . It is a preposit

What does by mean?

In maths, it tends to be short for divided by , although this may not always be the case.

What does their mean?

"Their" means "belonging to them." The homophone of there/their/they're . There refersto some place. . T heir is thepossessive pronoun of them or themselves. . They're

What does 'of' mean?

It means pertaining to, having a quality or characteristic, or in some cases from .

What does 'be in it' mean?

It means go be inside like to be inside a game ( to be in it, the it is the game for the sentence) Bye BLARGH!!

Meaning of where as?

It means (Instead). "I told her to do it this way, where as she insisted on doing it her own way and got it all wrong" "I told her to do it this way, instead she insisted on d

What does it mean had have and have had?

Well, they both mean the same thing but some people like to say 'had have' and some like to say 'have had'. It's just that they like to say it that way. Some people shorten

What means a?

An indefinite article, used when referring to someone or something for the first time. Ex: "A man walked into the room."

What does By Then mean?

"By then" means up to that time about which speaker is speaking. "By that time" refers to an action completed at the indicated time. Example : "I ran back from across th