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Figure 6 | BMC Plant Biology

Figure 6

From: Overexpression of the grapevine PGIP1 in tobacco results in compositional changes in the leaf arabinoxyloglucan network in the absence of fungal infection

Figure 6

A proposed model summarizing the influence of VvPGIP1 overexpression on tobacco leaf cell wall-associated processes and also suggesting the effect of these processes on the cell wall molecular architecture/functioning during pathogen infection. VvPGIP1 overexpression leads to CAD upregulation and lignification (A to B). VvPGIP1 overexpression leads to XTH/XET downregulation (transcript activity and enzyme activity) in tobacco leaves resulting in a more tightly-bound/strengthened cellulose-hemicellulose network (A to C). In the presence of a pathogenic fungus, such as Botrytis cinerea, this modified cellulose-hemicellulose network acts as a ‘reinforced’ physical barrier to penetration (C to D).

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BMC Plant Biology

ISSN: 1471-2229

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