Specific distribution of cell wall components in phloem and xylem in roots of plants belonging to various evolutionary lineages (fern, gymnosperm and angiosperm: monocotyledonous and dicotyledonous, both herbaceous and woody).
| Component . | Ceratopteris richardii . | Picea sitchensis . | Zea mays . | Arabidopsis thaliana . | Populus trichocarpa . |
|---|---|---|---|---|---|
| PHLOEM | |||||
| Arabinogalactan protein (LM2) | +++ | +++ | ++ | +++ | +++ |
| β-1,4-Galactan (LM5) | +++ | + | ++ | +++ | +++ |
| Xyloglucan (LM15) | +++ | − | − | ++ | + |
| Arabinan (LM16) | − | +/− | ++ | − | +/− |
| Homogalacturonan (LM18) | − | ++ | + | ++ | +++ |
| XYLEM | |||||
| Arabinogalactan protein (LM2) | +++d | ++d | ++c | − | +d |
| β-1,4-Galactan (LM5) | − | +/− | ++c | + | − |
| Xyloglucan (LM15) | +++b | +/− | ++ | ++b | +++b |
| Arabinan (LM16) | − | +/− | ++ | +/− | ++a |
| Homogalacturonan (LM18) | − | − | − | − | − |
| Component . | Ceratopteris richardii . | Picea sitchensis . | Zea mays . | Arabidopsis thaliana . | Populus trichocarpa . |
|---|---|---|---|---|---|
| PHLOEM | |||||
| Arabinogalactan protein (LM2) | +++ | +++ | ++ | +++ | +++ |
| β-1,4-Galactan (LM5) | +++ | + | ++ | +++ | +++ |
| Xyloglucan (LM15) | +++ | − | − | ++ | + |
| Arabinan (LM16) | − | +/− | ++ | − | +/− |
| Homogalacturonan (LM18) | − | ++ | + | ++ | +++ |
| XYLEM | |||||
| Arabinogalactan protein (LM2) | +++d | ++d | ++c | − | +d |
| β-1,4-Galactan (LM5) | − | +/− | ++c | + | − |
| Xyloglucan (LM15) | +++b | +/− | ++ | ++b | +++b |
| Arabinan (LM16) | − | +/− | ++ | +/− | ++a |
| Homogalacturonan (LM18) | − | − | − | − | − |
Symbols: +++ or ++, binding; +, weak binding; +/−, negligible binding; −, lack of binding.
aSignal was localized only in the immature xylem cells.
bSignal was localized especially in the secondary cell wall thickening.
cSignal was localized especially in the parenchyma cells surrounding the metaxylem.
dSignal was localized especially in the protoxylem.
Specific distribution of cell wall components in phloem and xylem in roots of plants belonging to various evolutionary lineages (fern, gymnosperm and angiosperm: monocotyledonous and dicotyledonous, both herbaceous and woody).
| Component . | Ceratopteris richardii . | Picea sitchensis . | Zea mays . | Arabidopsis thaliana . | Populus trichocarpa . |
|---|---|---|---|---|---|
| PHLOEM | |||||
| Arabinogalactan protein (LM2) | +++ | +++ | ++ | +++ | +++ |
| β-1,4-Galactan (LM5) | +++ | + | ++ | +++ | +++ |
| Xyloglucan (LM15) | +++ | − | − | ++ | + |
| Arabinan (LM16) | − | +/− | ++ | − | +/− |
| Homogalacturonan (LM18) | − | ++ | + | ++ | +++ |
| XYLEM | |||||
| Arabinogalactan protein (LM2) | +++d | ++d | ++c | − | +d |
| β-1,4-Galactan (LM5) | − | +/− | ++c | + | − |
| Xyloglucan (LM15) | +++b | +/− | ++ | ++b | +++b |
| Arabinan (LM16) | − | +/− | ++ | +/− | ++a |
| Homogalacturonan (LM18) | − | − | − | − | − |
| Component . | Ceratopteris richardii . | Picea sitchensis . | Zea mays . | Arabidopsis thaliana . | Populus trichocarpa . |
|---|---|---|---|---|---|
| PHLOEM | |||||
| Arabinogalactan protein (LM2) | +++ | +++ | ++ | +++ | +++ |
| β-1,4-Galactan (LM5) | +++ | + | ++ | +++ | +++ |
| Xyloglucan (LM15) | +++ | − | − | ++ | + |
| Arabinan (LM16) | − | +/− | ++ | − | +/− |
| Homogalacturonan (LM18) | − | ++ | + | ++ | +++ |
| XYLEM | |||||
| Arabinogalactan protein (LM2) | +++d | ++d | ++c | − | +d |
| β-1,4-Galactan (LM5) | − | +/− | ++c | + | − |
| Xyloglucan (LM15) | +++b | +/− | ++ | ++b | +++b |
| Arabinan (LM16) | − | +/− | ++ | +/− | ++a |
| Homogalacturonan (LM18) | − | − | − | − | − |
Symbols: +++ or ++, binding; +, weak binding; +/−, negligible binding; −, lack of binding.
aSignal was localized only in the immature xylem cells.
bSignal was localized especially in the secondary cell wall thickening.
cSignal was localized especially in the parenchyma cells surrounding the metaxylem.
dSignal was localized especially in the protoxylem.
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