scholarly journals A Transcriptomic Analysis of Xylan Mutants Does Not Support the Existence of A Secondary Cell Wall Integrity System in Arabidopsis

2018 ◽  
Author(s):  
Nuno Faria Blanc ◽  
Jenny C. Mortimer ◽  
Paul Dupree
Keyword(s):  
Cell Wall ◽  
Cell Walls ◽  
Secondary Cell Wall ◽  
Cell Wall Integrity ◽  
Wall Thickening ◽  
Similar System ◽  
Analogous System ◽  
A Cell ◽  
Secondary Cell Wall Thickening ◽  
Signalling Cascade

AbstractYeast have long been known to possess a cell wall integrity (CWI) system, and recently an analogous system has been described for the primary walls of plants (PCWI) that leads to changes in plant growth and cell wall composition. A similar system has been proposed to exist for secondary cell walls (SCWI). However, there is little data to support this. Here, we analysed the stem transcriptome of a set of cell wall biosynthetic mutants in order to investigate whether cell wall damage, in this case caused by aberrant xylan synthesis, activates a signalling cascade or changes in cell wall synthesis gene expression. Our data revealed remarkably few changes to the transcriptome. We hypothesise that this is because cells undergoing secondary cell wall thickening have entered a committed programme leading to cell death, and therefore a SCWI system would have limited impact. The absence of transcriptomic responses to secondary cell wall alterations may facilitate engineering of the secondary cell wall of plants.

Fine structure of tissue bordering lesions induced by wounding and virus infection

1978 ◽  
Vol 56 (23) ◽  
pp. 2990-2999 ◽  
Author(s):  
G. Faulkner ◽  
Warwick C. Kimmins
Keyword(s):  
Cell Wall ◽  
Fine Structure ◽  
Secondary Cell Wall ◽  
Wall Material ◽  
Wall Thickening ◽  
Pinto Bean ◽  
Local Lesions ◽  
Virus Localization ◽  
Similar Appearance ◽  
Secondary Cell Wall Thickening

Tissue in Phaseolus vulgaris L. cv. Pinto bean bordering local lesions induced by tobacco mosaic virus showed cell wall deposition associated with paramural body formation in a narrow ring of viable cells extending one to three cell diameters around the lesions. Deposition, which led to secondary cell wall thickening, was greatest 3–4 days after inoculation, the time when the lesion stopped expanding. Secondary cell wall thickening, of similar appearance but less pronounced, was seen in tissue bordering local lesions which continued to expand; no significant secondary cell wall thickening was observed in leaves with a nonlocalized infection. Cells bordering mechanical lesions differed markedly in fine structure from cells bordering virus and chemical lesions. It is suggested that the deposition of extra cell wall material in the wall regions of cells bordering fully expanded local lesions is associated with virus localization.

scholarly journals The Receptor-Like Kinase AtVRLK1 Regulates Secondary Cell Wall Thickening

2018 ◽  
Vol 177 (2) ◽  
pp. 671-683 ◽  
Author(s):  
Cheng Huang ◽  
Rui Zhang ◽  
Jinshan Gui ◽  
Yu Zhong ◽  
Laigeng Li
Keyword(s):  
Cell Wall ◽  
Secondary Cell Wall ◽  
Wall Thickening ◽  
Receptor Like Kinase ◽  
Secondary Cell Wall Thickening

A role of cotyledons and sucrose in the differentiation of primary phloem fibers in hypocotyls of sunflower seedlings

1984 ◽  
Vol 62 (8) ◽  
pp. 1763-1766 ◽  
Author(s):  
Ilabanta Mukherjee ◽  
Edward C. Yeung ◽  
David M. Reid
Keyword(s):  
Cell Wall ◽  
Secondary Cell Wall ◽  
Dry Weight ◽  
Wall Thickening ◽  
Fresh Weight ◽  
Phloem Fibers ◽  
Secondary Cell Wall Thickening ◽  
Stimulation Of

Sucrose treatment of the hypocotyls of derooted 7-day-old sunflower seedlings stimulated growth of hypocotyls as measured by dry weight. The fresh weight of the hypocotyls was unaffected. Stimulatory effect of sucrose was much greater in the presence of the cotyledons than in their absence. Cotyledons also influenced the differentiation of primary phloem fibers in the hypocotyls of seedlings, although when cotyledons were removed, induction of some phloem fiber differentiation was possible by sucrose treatment alone. In the presence of the cotyledons, sucrose in the concentrations of 0.025 and 0.05 M greatly enhanced primary phloem fiber differentiation and secondary cell wall thickening. Stimulation of dry weight of the hypocotyls by sucrose treatment in the presence of the cotyledons may be due to enhanced secondary cell wall thickening.

The transcription factor γMYB2 acts as a negative regulator of secondary cell wall thickening in anther and stem

Gene ◽  
2019 ◽  
Vol 702 ◽  
pp. 158-165 ◽  
Author(s):  
Ha Thi Kim Nguyen ◽  
Sujin Hyoung ◽  
Hae Jin Kim ◽  
Kwang Moon Cho ◽  
Jeong Sheop Shin
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Secondary Cell Wall ◽  
Negative Regulator ◽  
Wall Thickening ◽  
Secondary Cell Wall Thickening

scholarly journals A Cystathionine-β-Synthase Domain-Containing Protein, CBSX2, Regulates Endothecial Secondary Cell Wall Thickening in Anther Development

2012 ◽  
Vol 54 (2) ◽  
pp. 195-208 ◽  
Author(s):  
Kwang Wook Jung ◽  
Yun Young Kim ◽  
Kyoung Shin Yoo ◽  
Sung Han Ok ◽  
Mei Hua Cui ◽  
...  
Keyword(s):  
Cell Wall ◽  
Secondary Cell Wall ◽  
Anther Development ◽  
Wall Thickening ◽  
Secondary Cell Wall Thickening
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