2016
DOI: 10.1104/pp.16.01655
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Structure-Activity Relation of AMOR Sugar Molecule That Activates Pollen-Tubes for Ovular Guidance

Abstract: ORCID IDs: 0000-0003-3726-3798 (J.J.); 0000-0002-0398-2113 (S.S.); 0000-0002-7346-360X (T.H.).Successful fertilization in flowering plants depends on the precise directional growth control of pollen tube through the female pistil tissue toward the female gametophyte contained in the ovule for delivery of nonmotile sperm cells. Cys-rich peptides LUREs secreted from the synergid cells on either side of the egg cell act as ovular attractants of pollen tubes. Competency control by the pistil is crucial for the res… Show more

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Cited by 28 publications
(33 citation statements)
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“…AGPs belong to a large family of glycoproteins ubiquitously found in plants (20,21). Normally, AGPs are tethered to the outer leaflet of the PM by a glycosylphosphatidylinositol (GPI) anchor and may cross-link with some components of the cell wall (GPI-anchored AGPs) in plant cells (20,21).…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…AGPs belong to a large family of glycoproteins ubiquitously found in plants (20,21). Normally, AGPs are tethered to the outer leaflet of the PM by a glycosylphosphatidylinositol (GPI) anchor and may cross-link with some components of the cell wall (GPI-anchored AGPs) in plant cells (20,21).…”
Section: Resultsmentioning
confidence: 99%
“…AGPs belong to a large family of glycoproteins ubiquitously found in plants (20,21). Normally, AGPs are tethered to the outer leaflet of the PM by a glycosylphosphatidylinositol (GPI) anchor and may cross-link with some components of the cell wall (GPI-anchored AGPs) in plant cells (20,21). AGPs play crucial roles in cell growth, embryo patterning, reproductive development, postembryonic patterning, signal transduction, and pollen tube growth in plants (20,21).…”
Section: Resultsmentioning
confidence: 99%
“…Given that transitory starch stored along the style also is mobilized at anthesis, it most probably provides the backbones for the synthesis of the carbohydrate component of the AGP proteins, although this has not been proven directly. The sugar moiety of the AGPs triggers signaling responses that guide the pollen tube toward the ovule (Dresselhaus and Franklin-Tong, 2013;Jiao et al, 2017). Internalization of AGP carbohydrates by the pollen tube followed by carbohydrate relocation in the callus that pushes the nuclei forward in the direction of pollen tube growth also has been documented (Lee et al, 2009).…”
Section: Carbohydrate Partitioning and Metabolism In Floral Organsmentioning
confidence: 97%
“…The use of chemical synthesis is a powerful approach for studying structures that are important to the bioactivity of AMOR. The terminal sugar structure including the 4-O-methyl residue and gluconic acid with a b-glycosidic bond are critical, whereas the structure of the second sugar is not (Jiao et al, 2017). This suggests that chemical labeling of the second sugar in the active disaccharide AMOR for visualization and target identification is possible.…”
Section: Directional Growth Of the Pollen Tube Toward Attractant Peptmentioning
confidence: 99%