2005
DOI: 10.1105/tpc.105.031815
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Abstract: Mutations at five loci named PEANUT1-5 (PNT) were identified in a genetic screen for radially swollen embryo mutants. pnt1 cell walls showed decreased crystalline cellulose, increased pectins, and irregular and ectopic deposition of pectins, xyloglucans, and callose. Furthermore, pnt1 pollen is less viable than the wild type, and pnt1 embryos were delayed in morphogenesis and showed defects in shoot and root meristems. The PNT1 gene encodes the Arabidopsis thaliana homolog of mammalian PIG-M, an endoplasmic re… Show more

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Cited by 131 publications
(123 citation statements)
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“…This was additionally confirmed by the fate of SKU5 protein, involved in regulation of root growth and cell expansion, which in its native form is both N-glycosylated and GPI-anchored (Sedbrook et al, 2002). SKU5 was absent from flowers of pprd2 PPRD1-OE and pprd2 PPRD1-OE +/2 plants, most probably due to proteolytic degradation of the unmodified polypeptide ( Figure 4D) as earlier observed for pnt1 mutant devoid of GPI anchor biosynthesis (Gillmor et al, 2005). Similarly, mass spectrometry-based differential proteomics of wild-type and pprd2 PPRD1-OE +/2 flower proteins revealed the absence of numerous proteins of vital physiological functions in pprd2 PPRD1-OE +/2 plants (Supplemental Table 4).…”
Section: Lack Of Pprd2 Results In Male Sterility Due To Disturbed Prosupporting
confidence: 81%
“…This was additionally confirmed by the fate of SKU5 protein, involved in regulation of root growth and cell expansion, which in its native form is both N-glycosylated and GPI-anchored (Sedbrook et al, 2002). SKU5 was absent from flowers of pprd2 PPRD1-OE and pprd2 PPRD1-OE +/2 plants, most probably due to proteolytic degradation of the unmodified polypeptide ( Figure 4D) as earlier observed for pnt1 mutant devoid of GPI anchor biosynthesis (Gillmor et al, 2005). Similarly, mass spectrometry-based differential proteomics of wild-type and pprd2 PPRD1-OE +/2 flower proteins revealed the absence of numerous proteins of vital physiological functions in pprd2 PPRD1-OE +/2 plants (Supplemental Table 4).…”
Section: Lack Of Pprd2 Results In Male Sterility Due To Disturbed Prosupporting
confidence: 81%
“…While the specific function of MtBcp1 is unknown, the protein is predicted to be posttranslationally modified with a GPI anchor (Eisenhaber et al, 2003). GPI modifications are known to confer polar localization to proteins in animals (Brown et al, 1989;Lisanti et al, 1989) and plants (Schindelman et al, 2001;Roudier et al, 2005), and loss of plant genes involved in GPI biosynthesis results in defects in polar developmental processes (Lalanne et al, 2004;Gillmor et al, 2005). As development of the periarbuscular membrane likely involves polarized growth, we selected MtBcp1 as a potential candidate for a periarbuscular membrane resident protein.…”
Section: Mtbcp1 Is Localized In the Plasma Membrane And The Periarbusmentioning
confidence: 99%
“…We used antibodies to Arabidopsis SKU5, a protein that has been shown to be degraded in the absence of a functional GPI anchor (35), to investigate whether in pmm-12 the temperature shift might also trigger a defect in GPI anchoring. SKU5 protein levels were decreased in mutant plants, 7 days after transfer to 28°C (Fig.…”
Section: Identification Of a Ts Cell Deathmentioning
confidence: 99%