ArticleAnnals of botany2016
Arabinogalactan proteins and pectin distribution during female gametogenesis in Quercus suber L.
Article in Annals of botany, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 37 citations in OpenAlex.
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- Concluding Embryogenesis After Diaspora: Seed Germination in Illicium Parviflorum.Integrative and comparative biology · 2023Article
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- Arabinogalactan glycoprotein dynamics during the progamic phase in the tomato pistil.Plant reproduction · 2021Article
- Spatio-Temporal Distribution of Cell Wall Components in the Placentas, Ovules and Female Gametophytes ofInternational journal of molecular sciences · 2021Article
- In silico and expression analyses of fasciclin-like arabinogalactan proteins reveal functional conservation during embryo and seed development.Plant reproduction · 2019Article
- Arabinogalactan proteins mediate intercellular crosstalk in the ovule of apple flowers.Plant reproduction · 2019Article
- Pectin De-methylesterification and AGP Increase Promote Cell Wall Remodeling and Are Required During Somatic Embryogenesis ofFrontiers in plant science · 2018Article
- Style morphology and pollen tube pathway.Plant reproduction · 2017Review
- Pollen tube access to the ovule is mediated by glycoprotein secretion on the obturator of apple (Malus × domestica, Borkh).Annals of botany · 2017Article
- Arabinogalactan Proteins as Interactors along the Crosstalk between the Pollen Tube and the Female Tissues.Frontiers in plant science · 2016Review
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6 authors at 2 institutions in 1 country.
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Abstract
BACKGROUND AND
aimsQuercus suber L. (cork oak) is one of the most important monoecious tree species in semi-arid regions of Southern Europe, with a high ecological value and economic potential. However, as a result of its long reproductive cycle, complex reproductive biology and recalcitrant seeds, conventional breeding is demanding. In its complex reproductive biology, little is known about the most important changes that occur during female gametogenesis. Arabinogalactan proteins (AGPs) and pectins are the main components of plant cell walls and have been reported to perform common functions in cell differentiation and organogenesis of reproductive plant structures. AGPs have been shown to serve as important molecules in several steps of the reproductive process in plants, working as signalling molecules, associated with the sporophyte-gametophyte transition, and pectins have been implicated in pollen-pistil interactions before double fertilization. In this study, the distribution of AGP and pectin epitopes was assessed during female gametogenesis.
methodsImmunofluorescence labelling of female flower cells was performed with a set of monoclonal antibodies (mAbs) directed to the carbohydrate moiety of AGPs (JIM8 and JIM13) and pectic homogalacturonans (HGs) (mAbs JIM5 and JIM7). KEY
resultsThe selective labelling obtained with AGP and pectin mAbs JIM8, JIM13, JIM5 and JIM7 during Q. suber female gametogenesis shows that AGPs and pectic HG can work as markers for mapping gametophytic cell differentiation in this species. Pectic HG showed different distribution patterns, depending on their levels of methyl esterification. Methyl-esterified HGs showed a uniform distribution in the overall female flower cells before fertilization and a more specific pattern after fertilization. A low methyl-ester pectin distribution pattern during the different developmental stages appears to be related to the pathway that pollen tubes follow to reach the embryo sac. AGPs showed a more sparse distribution in early stages of development, but specific labelling is shown in the synergids and their filiform apparatus.
conclusionsThe labelling obtained with anti-AGP and anti-pectin mAbs in Q. suber female flower cells showed a dynamic distribution of AGPs and pectic HGs, which may render these molecules useful molecular markers during female gametogenesis. Changes occurring during development will be determined in order to help describe cork oak ovule structural properties before and after fertilization, providing new insight to better understand Q. suber female gametogenesis.
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