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Secondary wall

secondary wall

(Science: plant biology) The part of the plant cell wall which is laid down on top of the primary wall after the wall has ceased to increase in surface area. Only occurs in certain cell types, for example tracheids, vessel elements and sclerenchyma. Differs from the primary wall both in composition and structure and is often diagnostic for a particular cell type.


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What is pectin, hemicellulose and lignin and....???

and what is their importance in plant cell wall???... I know the primary cell wall of plants contains more amount of cellulose, pectin and hemicellulose and secondary cell wall contains more lignin, but I can't seem to understand their significance ...

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by NarutardedNinja
Thu Sep 26, 2013 4:06 pm
 
Forum: Cell Biology
Topic: What is pectin, hemicellulose and lignin and....???
Replies: 1
Views: 1381

Transport In Plants

... non-living tissue at maturity, but phloem is living cells. Xylem: Hard wall cells transport water and mineral nutrients Phloem: Relatively soft ... (ALFIERI, F. J., and R. F. EVERT. 1968. Seasonal development of the secondary phloem in Pinus. Am. J. Bot. 55, 518-528.) It consists of sieve ...

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by kika
Tue Aug 02, 2011 10:40 am
 
Forum: Botany Discussion
Topic: Transport In Plants
Replies: 3
Views: 10231

Invasion of a host cell by a DNA virus

... fusion viral receptors attach to the surface receptors of the cell and secondary receptors may be present to initiate the puncture of the cell membrane ... the phage directs the production of an enzyme that breaks down the cell wall allowing fluid to enter and then the cell becoms filled with viruses, ...

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by littlexsparrow
Wed Sep 23, 2009 7:14 pm
 
Forum: Microbiology
Topic: Invasion of a host cell by a DNA virus
Replies: 1
Views: 13678

Antibiotic effect

... this is that these antibiotic mostly affect the synthesis of the cell wall. if the bacteria divide the daughter cells need to make new cell walls, ... cells will start multiplying after the treatment and trigger a secondary infection. Cheers, Andrei

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by MrMistery
Wed Aug 12, 2009 12:35 am
 
Forum: Cell Biology
Topic: Antibiotic effect
Replies: 5
Views: 12412

Secondary walls in tracheary elements

I hope somebody can help me out here. I understand that secondary walls are laid in xylem tissue in one of the following ways: annular thickenings, helical thickenings, ...

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by botanygirl
Mon Nov 10, 2008 7:50 pm
 
Forum: Botany Discussion
Topic: Secondary walls in tracheary elements
Replies: 0
Views: 2639
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